NBM v3.2 GRIB All Sections - MDL
IS0: Indicator Section
Standard
octet(s) | content | value | meaning |
---|---|---|---|
1-4 | "grib" definition | 1196575042 | |
5-6 | reserved | ||
7 | discipline | 0 | meteorological |
8 | grib edition number | 2 | |
9 | total length of grib message in octets | varies |
IS1: Identification Section
Standard
octet(s) | content | value | meaning |
---|---|---|---|
1-4 | length of section in octets | 21 | |
5 | section number | 1 | |
6 | ID of originating center | 7 | National Weather Service - NCEP |
8 | ID of origin sub-center | 14 | MDL |
10 | GRIB master tables version number | 1 | |
11 | GRIB local tables' version number | 0 | |
12 | significance of reference time | 1 | start of forecast |
13-14 | Year | varies | |
15 | Month | varies | |
16 | Day | varies | |
17 | Hour | 0 | |
18 | Minute | 0 | |
19 | Second | 0 | |
20 | Production Status of Processed data in the GRIB message | 0 | operational product |
21 | Type of processed data in this GRIB message | 1 | forecast products |
tstm03
octet(s) | content | value | meaning |
---|---|---|---|
1-4 | length of section in octets | 21 | |
5 | section number | 1 | |
6 | ID of originating center | 7 | National Weather Service - NCEP |
8 | ID of origin sub-center | 14 | MDL |
10 | GRIB master tables version number | 2 | |
11 | GRIB local tables' version number | 1 | |
12 | significance of reference time | 1 | start of forecast |
13-14 | Year | varies | |
15 | Month | varies | |
16 | Day | varies | |
17 | Hour | 0 | |
18 | Minute | 0 | |
19 | Second | 0 | |
20 | Production Status of Processed data in the GRIB message | 1 | operational test product |
21 | Type of processed data in this GRIB message | 1 | forecast products |
IS2: Local Use Section
IS3: Grid Definition Section
CONUS
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | Length of the section | 81 | ||
5 | section number | 3 | ||
6 | Source of grid definition | 0 | Specified in Code - oct 3.13 | |
7-10 | Number of data points | 3744965 | ||
11 | Number of octets for optional list of numbers defining number of points | 0 | grid is regular; no appended data | |
12 | Interpretation of list of numbers defining number of points | 0 | There is no appended list | |
13-14 | Grid definition template number | 30 | Lambert Conformal | Can be Secant, Tangent, Conical, or Bipolar; |
15 | Shape of the Earth | 1 | Earth assumed spherical with radius specified (in m) by data producer | |
16 | Scale factor of radius of spherical Earth | 0 | ||
17-20 | Scale value of radius of spherical Earth | 6371200 | ||
21 | Scale factor of major axis of oblate spheroid Earth | 255 | ||
22-25 | Scaled value of major axis of oblate spheroid Earth | 255 | ||
26 | Scale factor of minor axis of oblate spheroid Earth | 255 | ||
27-30 | Scaled value of minor axis of oblate spheroid Earth | 255 | ||
31-34 | Nx ― number of points along the x-axis | 2345 | ||
35-38 | Ny — number of points along the y-axis | 1597 | ||
39-42 | La1― latitude of first grid point | 19229000 | ||
43-46 | Lo1― longitude of first grid point | 233723400 | ||
47 | Resolution and component flags | 48 | i direction increments given; j direction increments given; Resolved u and v components of vector quantities relative to easterly and northerly directions | convert value to binary to read in table 3.3 (48 = 00110000) |
48-51 | LaD ― latitude where Dx and Dy are specified | 25000000 | ||
52-55 | LoV ― longitude of meridian parallel to y-axis along which latitude increases as the y-coordinate increases | 265000000 | ||
56-59 | Dx ― x-direction grid length | 2539703 | Grid length is in units of 10-3 m at the latitude specified by LaD | |
60-63 | Dy ― y-direction grid length | 2539703 | Grid length is in units of 10-3 m at the latitude specified by LaD | |
64 | Projection centre flag | 0 | North Pole is on the projection plane; Only one projection center is used | convert value to binary to read in table 3.5 (0 = 00000000) |
65 | Scanning mode | 64 | Points in the first row or column scan in the +i (+x) direction; Points in the first row or column scan in the +j (+y) direction; Adjacent points in the i (x) direction are consecutive; All rows scan in the same direction; Points within odd rows are not offset in i(x) direction; Points within even rows are not offset in i(x) direction; Points are not offset in j(y) direction; Rows have Ni grid points and columns have Nj grid points | convert value to binary to read in table 3.4 (64 = 01000000) |
66 | Latin 1 ― first latitude from the pole at which the secant cone cuts the sphere | 25000000 | ||
70 | Latin 2 ― second latitude from the pole at which the secant cone cuts the sphere | 25000000 | ||
74-77 | Latitude of the southern pole of projection | -90 | For tstm03 this =0; for all others output read=4204967296 (for non-tstorm) Doesn't seem to be a valid entry; output degrib text=0-90; perhaps it is a bug in code for read-out for -90 value (after corrections)?; | |
78-81 | Longitude of the southern pole of projection | 0 |
CONUS (tstm03/tstm06)
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | Length of the section | 81 | ||
5 | section number | 3 | ||
6 | Source of grid definition | 0 | ||
7-10 | Number of data points | 3744965 | ||
11 | Number of octets for optional list of numbers defining number of points | 0 | grid is regular; no appended data | |
12 | Interpetation of list of numbers defining number of points | 0 | There is no appended list | |
13-14 | Grid definition template number | 30 | Lambert Conformal | |
15 | Shape of the Earth | 6 | Earth assumed spherical with radius = 6,371,229.0 | |
16 | Scale factor of radius of spherical Earth | 0 | ||
17-20 | Scale value of radius of spherical Earth | 0 | ||
21 | Scale factor of major axis of oblate spheroid Earth | 0 | ||
22-25 | Scaled value of major axis of oblate spheroid Earth | 0 | ||
26 | Scale factor of minor axis of oblate spheroid Earth | 0 | ||
27-30 | Scaled value of minor axis of oblate spheroid Earth | 0 | ||
31-34 | Nx ― number of points along the x-axis | 2345 | ||
35-38 | Ny — number of points along the y-axis | 1597 | ||
39-42 | La1― latitude of first grid point | 19229000 | ||
43-46 | Lo1― longitude of first grid point | 233723400 | ||
47 | Resolution and component flags | 56 | i direction increments given; j direction increments given; Resolved u and v components of vector quantities relative to the defined grid in the direction of increasing x and y (or i and j) coordinates, respectively | convert value to binary to read meaning in table 3.3 (56 =00111000) |
48-51 | LaD ― latitude where Dx and Dy are specified | 25000000 | ||
52-55 | LoV ― longitude of meridian parallel to y-axis along which latitude increases as the y-coordinate increases | 265000000 | ||
56-59 | Dx ― x-direction grid length | 2539703 | ||
60-63 | Dy ― y-direction grid length | 2539703 | ||
64 | Projection centre flag | 0 | North Pole is on the projection plane; Only one projection center is used | |
65 | Scanning mode | 64 | Points in the first row or column scan in the +i (+x) direction; Points in the first row or column scan in the +j (+y) direction; Adjacent points in the i (x) direction are consecutive; All rows scan in the same direction; Points within odd rows are not offset in i(x) direction; Points within even rows are not offset in i(x) direction; Points are not offset in j(y) direction; Rows have Ni grid points and columns have Nj grid points | convert value to binary to read in table 3.4 (64 = 01000000) |
66 | Latin 1 ― first latitude from the pole at which the secant cone cuts the sphere | 25000000 | ||
70 | Latin 2 ― second latitude from the pole at which the secant cone cuts the sphere | 25000000 | ||
74-77 | Latitude of the southern pole of projection | 0 | ||
78-81 | Longitude of the southern pole of projection | 0 |
Alaska
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | Length of the section | 65 | ||
5 | section number | 3 | ||
6 | Source of grid definition | 0 | Specified in Code - oct 3.13 | |
7-10 | Number of data points | 1822145 | ||
11 | Number of octets for optional list of numbers defining number of points | 0 | grid is regular; no appended data | |
12 | Interpretation of list of numbers defining number of points | 0 | There is no appended list | |
13-14 | Grid definition template number | 20 | Polar Stereographic | |
15 | Shape of the Earth | 1 | Earth assumed spherical with radius specified (in m) by data producer | |
16 | Scale factor of radius of spherical Earth | 0 | ||
17-20 | Scale value of radius of spherical Earth | 6371200 | ||
21 | Scale factor of major axis of oblate spheroid Earth | 255 | ||
22-25 | Scaled value of major axis of oblate spheroid Earth | 255 | ||
26 | Scale factor of minor axis of oblate spheroid Earth | 255 | ||
27-30 | Scaled value of minor axis of oblate spheroid Earth | 255 | ||
31-24 | Nx ― number of points along the x-axis | 1649 | ||
35-38 | Ny ― number of points along the y-axis | 1105 | ||
39-42 | La1 ― latitude of first grid point | 40530000 | ||
43-46 | Lo1 ― longitude of first grid point | 181429000 | ||
47 | Resolution and component flags | 48 | i direction increments given; j direction increments given; Resolved u and v components of vector quantities relative to easterly and northerly directions | convert value to binary to read in table 3.3 (48 = 00110000) |
48-51 | LaD ― latitude where Dx and Dy are specified | 60000000 | ||
52-55 | LoV ― orientation of the grid | 210000000 | "LoV is the longitude value of the meridian which is parallel to the y-axis (or columns of the grid) along which latitude increases as the y-coordinate increases (the orientation longitude may or may not appear on a particular grid)." | |
56-59 | Dx ― x-direction grid length | 2976560 | Grid length is in units of 10-3 m at the latitude specified by LaD | |
60-63 | Dy ― y-direction grid length | 2976560 | Grid length is in units of 10-3 m at the latitude specified by LaD | |
64 | Projection centre flag | 0 | North Pole is on the projection plane; Only one projection center is used | convert value to binary to read in table 3.5 (0 = 00000000) |
65 | Scanning mode | 64 | Points in the first row or column scan in the +i (+x) direction; Points in the first row or column scan in the +j (+y) direction; Adjacent points in the i (x) direction are consecutive; All rows scan in the same direction; Points within odd rows are not offset in i(x) direction; Points within even rows are not offset in i(x) direction; Points are not offset in j(y) direction; Rows have Ni grid points and columns have Nj grid points | convert value to binary to read in table 3.4 (64 = 01000000) |
Hawaii
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | Length of the section | 72 | ||
5 | section number | 3 | ||
6 | Source of grid definition | 0 | Specified in Code - oct 3.13 | |
7-10 | Number of data points | 350625 | ||
11 | Number of octets for optional list of numbers defining number of points | 0 | grid is regular; no appended data | |
12 | Interpretation of list of numbers defining number of points | 0 | There is no appended list | |
13-14 | Grid definition template number | 10 | Mercator | |
15 | Shape of the Earth | 1 | Earth assumed spherical with radius specified (in m) by data producer | |
16 | Scale factor of radius of spherical Earth | 0 | ||
17-20 | Scale value of radius of spherical Earth | 6371200 | ||
21 | Scale factor of major axis of oblate spheroid Earth | 255 | ||
22-25 | Scaled value of major axis of oblate spheroid Earth | 255 | ||
26 | Scale factor of minor axis of oblate spheroid Earth | 255 | ||
27-30 | Scaled value of minor axis of oblate spheroid Earth | 255 | ||
31-34 | Nj—number of points along a parallel | 625 | ||
35-38 | Nj—number of points along a meridian | 561 | ||
39-42 | La1 ― latitude of first grid point | 14351500 | ||
43-46 | Lo1 ― longitude of first grid point | 195030500 | ||
47 | Resolution and component flags | 0 | i direction increments not given, j direction increments not given, Resolved u and v components of vector quantities relative to easterly and northerly directions | convert value to binary to read meaning in table 3.3 |
48-51 | LaD — latitude(s) at which the Mercator projection intersects the Earth (Latitude(s) where Di and Dj are specified) | 20000000 | ||
52-55 | La2 ― latitude of last grid point | 26860500 | ||
56-59 | Lo2 — longitude of last grid point | 209959800 | ||
60 | Scanning mode | 64 | Points in the first row or column scan in the +i (+x) direction; Points in the first row or column scan in the +j (+y) direction; Adjacent points in the i (x) direction are consecutive; All rows scan in the same direction; Points within odd rows are not offset in i(x) direction; Points within even rows are not offset in i(x) direction; Points are not offset in j(y) direction; Rows have Ni grid points and columns have Nj grid points | convert value to binary to read in table 3.4 (64 = 01000000) |
61-64 | Orientation of the grid, angle between i direction on the map and the Equator | 200000000 | Limited to the range of 0 to 90 degrees; if the angle of orientation of the grid is neither 0 nor 90 degrees, Di and Dj must be equal to each other | |
65-68 | Dj — longitudinal direction grid length | 2500000 | Grid lengths are in units of 10-3 m, at the latitude specified by LaD | |
69-72 | Dj ― latitudinal direction grid length | 2500000 | Grid lengths are in units of 10-3 m, at the latitude specified by LaD |
Puerto Rico
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | Length of the section | 72 | ||
5 | section number | 3 | ||
6 | Source of grid definition | 0 | Specified in Code - oct 3.13 | |
7-10 | Number of data points | 76275 | ||
11 | Number of octets for optional list of numbers defining number of points | 0 | grid is regular; no appended data | |
12 | Interpretation of list of numbers defining number of points | 0 | There is no appended list | |
13-14 | Grid definition template number | 10 | Mercator | |
15 | Shape of the Earth | 1 | Earth assumed spherical with radius specified (in m) by data producer | |
16 | Scale factor of radius of spherical Earth | 0 | ||
17-20 | Scale value of radius of spherical Earth | 6371200 | ||
21 | Scale factor of major axis of oblate spheroid Earth | 255 | ||
22-25 | Scaled value of major axis of oblate spheroid Earth | 255 | ||
26 | Scale factor of minor axis of oblate spheroid Earth | 255 | ||
27-30 | Scaled value of minor axis of oblate spheroid Earth | 255 | ||
31-34 | Nj—number of points along a parallel | 339 | ||
35-38 | Nj—number of points along a meridian | 225 | ||
39-42 | La1 ― latitude of first grid point | 16977500 | ||
43-46 | Lo1 ― longitude of first grid point | 291972200 | ||
47 | Resolution and component flags | 0 | i direction increments not given, j direction increments not given, Resolved u and v components of vector quantities relative to easterly and northerly directions | convert value to binary to read meaning in table 3.3 |
48-51 | LaD — latitude(s) at which the Mercator projection intersects the Earth (Latitude(s) where Di and Dj are specified) | 20000000 | ||
52-55 | La2 ― latitude of last grid point | 19522100 | ||
56-59 | Lo2 — longitude of last grid point | 296015600 | ||
60 | Scanning mode | 64 | Points in the first row or column scan in the +i (+x) direction; Points in the first row or column scan in the +j (+y) direction; Adjacent points in the i (x) direction are consecutive; All rows scan in the same direction; Points within odd rows are not offset in i(x) direction; Points within even rows are not offset in i(x) direction; Points are not offset in j(y) direction; Rows have Ni grid points and columns have Nj grid points | convert value to binary to read in table 3.4 (64 = 01000000) |
61-64 | Orientation of the grid, angle between i direction on the map and the Equator | 295000000 | Limited to the range of 0 to 90 degrees; if the angle of orientation of the grid is neither 0 nor 90 degrees, Di and Dj must be equal to each other | |
65-68 | Dj — longitudinal direction grid length | 1250000 | Grid lengths are in units of 10-3 m, at the latitude specified by LaD | |
69-72 | Dj ― latitudinal direction grid length | 1250000 | Grid lengths are in units of 10-3 m, at the latitude specified by LaD |
Oceanic
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | Length of the section | 72 | ||
5 | section number | 3 | ||
6 | Source of grid definition | 0 | Specified in Code - oct 3.13 | |
7-10 | Number of data points | 4573389 | ||
11 | Number of octets for optional list of numbers defining number of points | 0 | grid is regular; no appended data | |
12 | Interpretation of list of numbers defining number of points | 0 | There is no appended list | |
13-14 | Grid definition template number | 10 | Mercator | |
15 | Shape of the Earth | 1 | Earth assumed spherical with radius specified (in m) by data producer | |
16 | Scale factor of radius of spherical Earth | 0 | ||
17-20 | Scale value of radius of spherical Earth | 6371200 | ||
21 | Scale factor of major axis of oblate spheroid Earth | 255 | ||
22-25 | Scaled value of major axis of oblate spheroid Earth | 255 | ||
26 | Scale factor of minor axis of oblate spheroid Earth | 255 | ||
27-30 | Scaled value of minor axis of oblate spheroid Earth | 255 | ||
31-34 | Nj—number of points along a parallel | 2517 | ||
35-38 | Nj—number of points along a meridian | 1817 | ||
39-42 | La1 ― latitude of first grid point | 4264548096 | ||
43-46 | Lo1 ― longitude of first grid point | 129905800 | ||
47 | Resolution and component flags | 48 | i direction increments given, j direction increments given, Resolved u and v components of vector quantities relative to easterly and northerly directions | convert value to binary to read meaning in table 3.3 |
48-51 | LaD — latitude(s) at which the Mercator projection intersects the Earth (Latitude(s) where Di and Dj are specified) | 20000000 | ||
52-55 | La2 ― latitude of last grid point | 80383000 | ||
56-59 | Lo2 — longitude of last grid point | 10689200 | ||
60 | Scanning mode | 64 | Points in the first row or column scan in the +i (+x) direction; Points in the first row or column scan in the +j (+y) direction; Adjacent points in the i (x) direction are consecutive; All rows scan in the same direction; Points within odd rows are not offset in i(x) direction; Points within even rows are not offset in i(x) direction; Points are not offset in j(y) direction; Rows have Ni grid points and columns have Nj grid points | convert value to binary to read in table 3.4 (64 = 01000000) |
61-64 | Orientation of the grid, angle between i direction on the map and the Equator | 0 | Limited to the range of 0 to 90 degrees; if the angle of orientation of the grid is neither 0 nor 90 degrees, Di and Dj must be equal to each other | |
65-68 | Dj — longitudinal direction grid length | 10000000 | Grid lengths are in units of 10-3 m, at the latitude specified by LaD | |
69-72 | Dj ― latitudinal direction grid length | 10000000 | Grid lengths are in units of 10-3 m, at the latitude specified by LaD |
IS4: Product Definition Section
tstm03
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 68 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 9 | probability forecast at a horizontal level/layer over a continuous time period or time interval | |
10 | parameter category | 19 | Physical atmospheric properties | |
11 | Parameter number | 2 | Thunderstorm probability | % |
12 | Type of generating process | 5 | probability forecast | |
13 | Background generating process identifier | 0 | ||
14 | Forecast generating process identified | 113 | NCEP SREF | see: ON388 - TABLE A |
15-16 | Hours after reference time data cutoff | 0 | ||
17 | Minutes after reference time data cutoff | 0 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 1 | ground/water surface | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 | ||
35 | forecast probability number | 0 | ||
36 | total number of forecast probabilities | 21 | ||
37 | probability type | 1 | Probability of event above upper limit | |
38 | scale factor lower limit | 0 | ||
39-42 | scaled value of lower limit | 0 | ||
43 | scale factor for upper limit | 0 | ||
44-47 | scaled value of upper limit | 0 | ||
48-49 | year (Time of end of overall time interval) | varies | ||
50 | month (Time of end of overall time interval) | varies | ||
51 | day (Time of end of overall time interval) | varies | ||
52 | hour (Time of end of overall time interval) | varies | ||
53 | minute (Time of end of overall time interval) | varies | ||
54 | second (Time of end of overall time interval) | varies | ||
55 | number of time range specifications used to describe the time intervals used to calculate data field | varies | ||
56-59 | number of missing values | varies | ||
60 | Statistical process used to calculate the processed field from the field at each time increment during the time range | 1 | accumulation | |
61 | Type of time increment between successive fields used in the statistical processing | 2 | Successive times processed have same start time of forecast, forecast time is incremented | |
62 | Indicator of unit of time for time range over which statistical processing is done | 1 | hour | |
63-66 | Length of the time range over which statistical processing is done (units defined by 4.62) | 3 | ||
67 | Indicator of unit of time for the increment between the successive fields used | 1 | hour | |
68 | Indicator of unit of time for the increment between the successive fields used | 255 | missing |
tstm06
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 58 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | ||
8-9 | product template | 8 | Average, accumulation, extreme values or other statistically processed values at a horizontal level or in a horizontal layer in a continuous or non-continuous time interval | |
10 | parameter category | 19 | Physical atmospheric properties | |
11 | Parameter number | 2 | Thunderstorm Probability | |
12 | Type of generating process | 5 | Probability Forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 96 | "Global Forecast System Model T1534 - Forecast hours 00-384 T574 - Forecast hours 00-192 T190 - Forecast hours 204-384" |
|
15-16 | Hours after reference time data cutoff | 66535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 1 | Ground or Water Surface | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 | ||
35-36 | Year ― Time of end of overall time interval | varies | ||
37 | Month - Time of end of overall time interval | varies | ||
38 | Day - Time of end of overall time interval | varies | ||
39 | Hour - Time of end of overall time interval | varies | ||
40 | Minute - Time of end of overall time interval | varies | ||
41 | Second - Time of end of overall time interval | varies | ||
42 | n ― number of time ranges specifications describing the time intervals used to calculate the statistically-processed field | 1 | ||
43-46 | Total number of data values missing in statistical process | 0 | ||
47 | Statistical process used to calculate the processed field from the field at each time increment during the time range | 255 | missing | |
48 | Type of time increment between successive fields used in the statistical processing | 1 | Successive times processed have same forecast time, start time of forecast is incremented. | |
49 | Indicator of unit of time for time range over which statistical processing is done | 1 | hour | |
50-53 | Length of the time range over which statistical processing is done, in units defined by the previous octet | 6 | ||
54 | Indicator of unit of time for the increment between the successive fields used | 255 | missing | |
55-58 | Time increment between successive fields, in units defined by the previous octet | 255 | missing |
pop12
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 68 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 9 | probability forecast at a horizontal level/layer over a continuous time period or time interval | |
10 | parameter category | 1 | Moisture | |
11 | Parameter number | 8 | Total Precipitation | kg m-2; Statistical process 1 (Accumulation) does not change units. It is recommended to use another parameter with "rate" in its name and accumulation in PDT. |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 1 | ground/water surface | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 | ||
35 | forecast probability number | 255 | pop12 | |
36 | total number of forecast probabilities | 255 | pop12 | |
37 | probability type | 1 | Probability of event above upper limit | |
38 | scale factor lower limit | 4294967169 | ||
39-42 | scaled value of lower limit | 255 | ||
43 | scale factor for upper limit | 3 | ||
44-47 | scaled value of upper limit | 254 | ||
48-49 | year (Time of end of overall time interval) | varies | ||
50 | month (Time of end of overall time interval) | varies | ||
51 | day (Time of end of overall time interval) | varies | ||
52 | hour (Time of end of overall time interval) | varies | ||
53 | minute (Time of end of overall time interval) | varies | ||
54 | second (Time of end of overall time interval) | varies | ||
55 | number of time range specifications used to describe the time intervals used to calculate data field | varies | ||
56-59 | number of missing values | varies | ||
60 | Statistical process used to calculate the processed field from the field at each time increment during the time range | 1 | accumulation | |
61 | Type of time increment between successive fields used in the statistical processing | 2 | Successive times processed have same start time of forecast, forecast time is incremented | |
62 | Indicator of unit of time for time range over which statistical processing is done | 1 | hour | |
63-66 | Length of the time range over which statistical processing is done (units defined by 4.62) | 12 | ||
67 | Indicator of unit of time for the increment between the successive fields used | 1 | hour | |
68 | Indicator of unit of time for the increment between the successive fields used | 255 | missing |
qpf01/qpf06/ppi
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 58 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 8 | average accumulation or extreme value | |
10 | parameter category | 1 | moisture | |
11 | Parameter number | 8 (qpf) /243 (ppi) | total precipitation / unknown - resereved for local use | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 1 | ground/water surface | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 | ||
35-36 | year (Time of end of overall time interval) | varies | ||
37 | month (Time of end of overall time interval) | varies | ||
38 | day (Time of end of overall time interval) | varies | ||
39 | hour (Time of end of overall time interval) | varies | ||
40 | minute (Time of end of overall time interval) | 0 | ||
41 | second (Time of end of overall time interval) | 0 | ||
42 | number of time range specifications used to describe the time intervals used to calculate data field | 1 | ||
43-46 | number missing | 0 | ||
47 | Statistical process used to calculate the processed field from the field at each time increment during the time range | 1 | accumulation | |
48 | time increment between fields | 2 | same start time, forecast time is incremented | |
49 | Indicator of unit of time for time range over which statistical processing is done | 1 | hour | |
50-53 | length of time range (units defined in 4.49) | 1 (qpf01/ppi*) / 6 (qpf06/ppi*) | * ppi changes time range from 1 hr to 6 hr after 36 hours | |
54 | time unit for increment between successive fields | 1 | hour | |
55-58 | Time increment between successive fields (units defined in 4.54) | 0 |
prrain/prfzrn/prsleet/prsnow
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 47 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 5 | probability forecast | |
10 | parameter category | 1 | Moisture | |
11 | Parameter number | 19 | Precipitation Type | |
12 | Type of generating process | 2 | ||
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | ||
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 1 | ground/water surface | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 | ||
35 | forecast probability number | 1 | ||
36 | total number of forecast probabilities | 1 | ||
37 | probability type | 2 | probability event between limits (includes lower but not upper limit) | |
39-42 | scaled value of lower limit | varies | ||
43 | scale factor for upper limit | 0 | ||
44-47 | scaled value of upper limit | varies |
probiceprsnt
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 47 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 5 | probability forecast | |
10 | parameter category | 1 | Moisture | |
11 | Parameter number | 19 | Precipitation Type | |
12 | Type of generating process | 2 | ||
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | ||
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 10 | entire atmosphere | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 | ||
35 | forecast probability number | 1 | ||
36 | total number of forecast probabilities | 1 | ||
37 | probability type | 2 | probability event between limits (includes lower but not upper limit) | |
39-42 | scaled value of lower limit | varies | ||
43 | scale factor for upper limit | 0 | ||
44-47 | scaled value of upper limit | varies |
probrefzslt
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 47 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 5 | probability forecast | |
10 | parameter category | 1 | Moisture | |
11 | Parameter number | 242 | Relative Humidity with Respect to Precipitable Water | |
12 | Type of generating process | 2 | ||
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | ||
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 10 | entire atmosphere | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 | ||
35 | forecast probability number | 1 | ||
36 | total number of forecast probabilities | 1 | ||
37 | probability type | 3 | probability event above upper limit | |
38 | scale factor lower limit | 4294967281 | ||
39-42 | scaled value of lower limit | varies | ||
43 | scale factor for upper limit | 4294967281 | ||
44-47 | scaled value of upper limit | varies |
mxwbalft
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 34 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 0 | analysis/forecast at a horizontal level/layer at a point in time | |
10 | parameter category | 0 | temperature | |
11 | Parameter number | 27 | Wet Bulb Temperature | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 10 | entire atmosphere | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 |
posengy/negengy
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 34 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 0 | analysis/forecast at a horizontal level/layer at a point in time | |
10 | parameter category | 7 | Thermodynamic Stability indicies | |
11 | Parameter number | 6 (pos) / 7 (neg) | Convective Available Potential Energy / Convective Inhibition | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 10 | entire atmosphere | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 |
temp/dewp/appt
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 34 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 0 | analysis/forecast at a horizontal level/layer at a point in time | |
10 | parameter category | 0 | Temperature | |
11 | Parameter number | 0 / 6 / 21 | Temperature / Dew Point Temperature / Apparent Temperature | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 103 | Specified Height Level Above Ground | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 2 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 |
rh
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 34 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 0 | analysis/forecast at a horizontal level/layer at a point in time | |
10 | parameter category | 1 | Moisture | |
11 | Parameter number | 1 | Relative Humidity | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 103 | Specified Height Level Above Ground | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 2 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 |
cig/cldbse
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 34 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 0 | analysis/forecast at a horizontal level/layer at a point in time | |
10 | parameter category | 6 | Cloud | |
11 | Parameter number | 13 | Ceiling | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 215 / 2 | Cloud ceiling / Cloud Base Level | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 |
sky
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 34 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 0 | analysis/forecast at a horizontal level/layer at a point in time | |
10 | parameter category | 6 | Cloud | |
11 | Parameter number | 1 | Total Cloud Cover | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 1 | Ground or Water Surface | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 |
vis
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 34 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 0 | analysis/forecast at a horizontal level/layer at a point in time | |
10 | parameter category | 19 | Physical atmospheric properties | |
11 | Parameter number | 0 | Visibility | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 1 | Ground or Water Surface | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 |
slrblend
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 34 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 0 | analysis/forecast at a horizontal level/layer at a point in time | |
10 | parameter category | 1 | Moisture | |
11 | Parameter number | 220 | Minimum specific humidity at 2m | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 1 | Ground or Water Surface | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 |
snowlvl
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 34 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | no vertical discretization has occured for this data | |
8-9 | product template | 0 | analysis/forecast at a horizontal level/layer at a point in time | |
10 | parameter category | 19 | Physical atmospheric properties | |
11 | Parameter number | 235 | Joint Fire Weather Probability | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 102 | Specific Altitude Above Mean Sea Level | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 0 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 |
wspd/wdir/wgust
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 34 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | ||
8-9 | product template | 0 | ||
10 | parameter category | 2 | momentum | |
11 | Parameter number | 1 / 0 / 22 | Wind Speed / Wind Direction (from which blowing) / Wind Speed (Gust) | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | NBM Grib | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 103 | Specified Height Level Above Ground | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 10 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 |
maxt / mint
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 58 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | ||
8-9 | product template | 8 | ||
10 | parameter category | 0 | temperature | |
11 | Parameter number | 4 / 5 | maximum / minimum temperature (K) | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | National Blend GRIB | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 103 | Specified Height Level Above Ground | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 2 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 | ||
35-36 | Year ― Time of end of overall time interval | varies | ||
37 | Month - Time of end of overall time interval | varies | ||
38 | Day - Time of end of overall time interval | varies | ||
39 | Hour - Time of end of overall time interval | varies | ||
40 | Minute - Time of end of overall time interval | varies | ||
41 | Second - Time of end of overall time interval | varies | ||
42 | n ― number of time ranges specifications describing the time intervals used to calculate the statistically-processed field | 1 | ||
43-46 | Total number of data values missing in statistical process | 0 | ||
47 | Statistical process used to calculate the processed field from the field at each time increment during the time range | 2 / 3 | maximum / minimum | |
48 | Type of time increment between successive fields used in the statistical processing | 2 | Successive times processed have same start time of forecast, forecast time is incremented. | |
49 | Indicator of unit of time for time range over which statistical processing is done | 1 | hour | |
50-53 | Length of the time range over which statistical processing is done, in units defined by the previous octet | 12 | ||
54 | Indicator of unit of time for the increment between the successive fields used | 1 | hour | |
55-58 | Time increment between successive fields, in units defined by the previous octet | 0 |
maxrh / minrh
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 58 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | ||
8-9 | product template | 8 | ||
10 | parameter category | 1 | moisture | |
11 | Parameter number | 27 / 198 | Maximum Relative Humidity (%) / Minimum Relative Humidity (%) | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | National Blend GRIB | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hour | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 103 | Specified Height Level Above Ground | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 2 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 | ||
35-36 | Year ― Time of end of overall time interval | varies | ||
37 | Month - Time of end of overall time interval | varies | ||
38 | Day - Time of end of overall time interval | varies | ||
39 | Hour - Time of end of overall time interval | varies | ||
40 | Minute - Time of end of overall time interval | varies | ||
41 | Second - Time of end of overall time interval | varies | ||
42 | n ― number of time ranges specifications describing the time intervals used to calculate the statistically-processed field | 1 | ||
43-46 | Total number of data values missing in statistical process | 0 | ||
47 | Statistical process used to calculate the processed field from the field at each time increment during the time range | 2 / 3 | maximum / minimum | |
48 | Type of time increment between successive fields used in the statistical processing | 2 | Successive times processed have same start time of forecast, forecast time is incremented. | |
49 | Indicator of unit of time for time range over which statistical processing is done | 1 | hour | |
50-53 | Length of the time range over which statistical processing is done, in units defined by the previous octet | 12 | ||
54 | Indicator of unit of time for the increment between the successive fields used | 1 | hour | |
55-58 | Time increment between successive fields, in units defined by the previous octet | 0 |
Oceanic Wind Speed (CDF)
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 59 | ||
5 | section number | 4 | ||
6-7 | Number of coordinate values after template | 0 | ||
8-9 | product template | 10 | ||
10 | parameter category | 2 | Momentum | |
11 | Parameter number | 1 | Wind Speed | |
12 | Type of generating process | 2 | forecast | |
13 | Background generating process identifier | 255 | ||
14 | Forecast generating process identified | 104 | National Blend GRIB | |
15-16 | Hours after reference time data cutoff | 65535 | ||
17 | Minutes after reference time data cutoff | 255 | ||
18 | Indicator of unit of time range | 1 | hours | |
19-22 | Forecast time (units defined by 4.18) | varies | ||
23 | Type of first fixed surface | 103 | Specified Height Level Above Ground | |
24 | Scale factor of first fixed surface | 0 | ||
25-28 | Scaled value of first fixed surface | 10 | ||
29 | Type of second fixed surfaced | 255 | missing | |
30 | Scale factor of second fixed surface | 0 | ||
31-34 | Scaled value of second fixed surfaces | 0 | ||
35 | Percentile value (from 100% to 0%) | varies | cdf-p[this] in file name | |
36-37 | Year of end of overall time interval | varies | ||
38 | Month of end of overall time interval | varies | ||
39 | Day of end of overall time interval | varies | ||
40 | Hours of end of overall time interval | varies | ||
41 | Minute of end of overall time interval | varies | ||
42 | Second of end of overall time interval | varies | ||
43 | n ― number of time range specifications describing the time intervals used to calculate the statistically-processed field | 1 | ||
44-47 | Total number of data values missing in the statistical process | 0 | ||
48 | Statistical process used to calculate the processed field from the field at each time increment during the time range | 241 | unknown - reserved value for local use | |
49 | Type of time increment between successive fields used in the statistical processing | 241 | unknown - reserved value for local use | |
50 | Indicator of unit of time range over which statistical processing is done | 1 | hour | |
51-54 | Length of the time range over which statistical processing is done, in units defined by the previous octet | 1 | ||
55 | Indicator of unit of time for the increment between the successive fields used | 1 | hour | |
56-59 | Time increment between successive fields, in units defined by the previous octet | 3 |
IS5: Data Representation Section
Standard (all except tstm03 / tstm06)
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 49 | ||
5 | section number | 5 | ||
6-9 | "Number of data points where one or more values are specified in Section 7 when a bit map is present; total number of data points when a bit map is absent" | varies by grid (see IS3) | 3744965 (co); 1822145(ak); 76275(pr); 350625(hi); 4573389(oc) | |
10-11 | template number | 3 | Grid Point Data - Complex Packing and Spatial Differencing | |
12-15 | Reference value (R) (IEEE 32-bit floating-point value) | varies | ||
16-17 | Binary scale factor (E) | varies | usually stable by element: vis=7; cig/cldbse/snowlevel=3; appt/dewp/mxwbalft/temp/wgust/wspd=2; negengy/pop12/posengy/ppi/prfzrn/probiceprsnt/probrefzslt/ prrain/prsleet/prsnow/qpf01/qpf06/rh/sky/slrblend/wdir=0 |
|
18-19 | Decimal scale factor (D) | varies | usually stable by element; usually 0 or 1; qpf01/qpf06=3; wdir=4294967295 | |
20 | Number of bits used for each packed value for simple packing, or for each group reference value for complex packing or spatial differencing | varies | ||
21 | Type of original field values | 0 | Floating Point | |
22 | Group splitting method used | 1 | General Group Splitting | |
23 | Missing value management used | 1 | Primary missing values included within the data values | |
24-27 | Primary missing value substitute | 9999 | ||
28-31 | Secondary missing value substitute | 0 | ||
32-35 | NG ― number of groups of data values into which field is split | varies | ||
36 | Reference for group widths | varies | usually 0 - 1 | |
37 | Number of bits used for the group widths (value after - oct 5.36) | varies | ||
38-41 | Reference for group lengths | 1 | may vary; probrefzslt has value 2147483647 | |
42 | Length increment for the group lengths | 1 | may vary | |
43-46 | True length of last group | varies | ||
47 | Number of bits used for the scaled group lengths (after - oct5.38 and % by oct5.42) | varies | ||
48 | Order of spatial difference | 2 | Second-Order Spatial Differencing | |
49 | Number of octets required in the data section to specify extra descriptors needed for spatial differencing (octets 6-ww in data template 7.3) | varies | usually 1-2 |
tstm03 / tstm06
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 21 | ||
5 | section number | 5 | ||
6-9 | "Number of data points where one or more values are specified in Section 7 when a bit map is present; total number of data points when a bit map is absent" | 1943462 (tstm03); 3744965 (tstm06) | tstm03 dooes not match other conus products; tstm06 matches other conus products | |
10-11 | template number | 0 | Grid Point Data - Complex Packing and Spatial Differencing | |
12-15 | Reference value (R) (IEEE 32-bit floating-point value) | varies | ||
16-17 | Binary scale factor (E) | 0 | may vary | |
18-19 | Decimal scale factor (D) | 0 | may vary | |
20 | Number of bits used for each packed value for simple packing, or for each group reference value for complex packing or spatial differencing | varies | ||
21 | Type of original field values | 0 | Floating Point |
IS6: Bit Map Section
Standard (all except tstm03 / tstm06)
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 6 | ||
5 | section number | 6 | ||
6 | bitmap indicator | 255 | A bit map does not apply to this product |
tstm03 / tstm06
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | 6 | ||
5 | section number | 6 | ||
6 | bitmap indicator | 0 | A bit map applies to this product and is specified in this section | |
7+ | 0 | All values = 0 |
IS7: Data Section
Standard (all except tstm03 / tstm06)
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | varies | ||
5 | section number | 7 | ||
6+ | data | 0 | in a format described by data Template 7.X, where X is the data representation template number in octet 5.10 |
tstm03 / tstm06
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | length of section in octets | varies | ||
5 | section number | 7 | ||
6+ | data | 0 | in a format described by data Template 7.X, where X is the data representation template number in octet 5.10 |
IS8: End Section
All
octet(s) | content | value | meaning | notes |
---|---|---|---|---|
1-4 | 7777 | [END] | Coded according to the International Alphabet Number 5. |