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Re: [aor-rtma] Hourly Stage IV/precip URMA parallel run

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YL
Ying Lin, modified 8 Years ago.

Re: [aor-rtma] Hourly Stage IV/precip URMA parallel run

Youngling Posts: 48 Join Date: 3/27/17 Recent Posts
Hi Jeff,

    NWRFC and CNRFC don't use radar so their QPEs stop at the coast.  Attached are snapshots of 6h QPEs from these two RFCs - grid values offshore are perpetually zero (the RFCs don't use a data mask).  We're imposing a mask for the Stage IV/URMA so that grid points off the west coast are set to missing.

Ying

On 04/04/2017 10:38 AM, Jeffrey Craven - NOAA Federal wrote:
Thank you for producing this Ying.  Is it possible to have the unmasked output from the Western Region RFCs so it extends over the Pacific Ocean?

JPC

Jeff Craven
Chief, Statistical Modeling Branch
National Weather Service
Meteorological Development Laboratory (MDL)
Room 10410, SSMC2
Silver Spring, MD 20910
(301) 427-9475 office
(816) 506-9783 cell/text
@jpcstorm

On Mon, Apr 3, 2017 at 1:24 PM, Ying Lin <ying.lin@noaa.gov> wrote:

Hello.  A parallel run started a week ago for hourly Stage IV/precip URMA for ConUS and Puerto Rico: see http://www.emc.ncep.noaa.gov/mmb/ylin/pcpanl/#NextBundle. 

The Puerto Rico URMA is simply 1h PR QPE (produced by SERFC) mapped to the 2.5km Puerto Rico NDFD grid.

The hourly ConUS URMA is from the 6h QPE from NWRFC and CNRFC dis-aggregated into hourly amounts using hourly gauge-corrected MRMS as weights, combined with hourly QPEs from the other 10 ConUS RFCs.  Since 1) the field already receives hourly MRMS 2) 10 of 12 ConUS RFCs produce hourly QPEs and 3) out west the PRISM/MountainMapper-based RFC QPEs might have an edge over the radar-based MRMS, this set up seems to provide the best "value" as 1h ConUS precip URMA.  

Please take a look at parallel output: ftp://ftp.emc.ncep.noaa.gov/mmb/precip/pcpanl.v3.0.0/.  It's currently run once a day at 20:24Z for the preceding 12Z-12Z 24h period (and some times I make re-runs when there are missing MRMS/QPE files on the dev machine).  Later a full parallel run will have more frequent updates in the first 24h hours or so, and 1/3/5/7-day re-mosaics as the current operational Stage IV/precip URAM set up.

Ying

-- 
Ying Lin
NCEP/EMC/Mesoscale Modeling Branch
NCWCP Cubicle No. 2015
Ying.Lin@noaa.gov

 


 



-- 
Ying Lin
NCEP/EMC/Mesoscale Modeling Branch
NCWCP Cubicle No. 2015
Ying.Lin@noaa.gov

 

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