Regional Ensembles Into 2020: A Possible Vision Geoff DiMego December 3, 2013 301-683-3764 “Where America’s Climate, Weather, Ocean.

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Presentation transcript:

Regional Ensembles Into 2020: A Possible Vision Geoff DiMego December 3, “Where America’s Climate, Weather, Ocean and Space Weather Services Begin”

CFSv3 Convective Allowing Data Assimilation – ARW Convective Allowing Data Assimilation – NMMB 3D URMA / RUA / AoR ARW HRRRE members CONUS and Alaska NMMB HRRRE members CONUS, Alaska, Hawaii, Puerto Rico NMMB Storm Scale Ensemble members within CONUS and/or Alaska GDAS GFS GEFS Hurricane NAMext S R E F S R E F S R E F S R E F RTOFS

CurrentEnd of Phase 1 / 2015End of Phase 2 / 2018 WRF-ARW, WRF-NMM, NMMB WRF-ARW & NMMB 7 each= 21 members 16 km10 each= 20 members ~12 km10 each=20 members ~9 km (parent) 35 levels 6 hourly to 84 hr40 levels 6 hourly to 84 hr50/60 levels 6 hourly to 84 hr Product streams will be added, consolidated & repurposed (i.e. renamed). May have later delivery. Irregular suite of convective- allowing scale guidance 3-6 km every 6 hours run to 48/60 hr for CONUS, Alaska, HI, PR Single hourly 3 km [HRRR] Run to 15 hr for CONUS Upgrade irregular convective suite to 3 km still 6 hourly to 48/60 hr CONUS, Alaska, HI, PR Multiple hourly 3 km [HRRRE] Run to 24 hr for CONUS, Alaska, Hi, PR 6 hourly extended to 60 hr Single placeable Storm Scale sub-nest 1.33 km or 1.5 km Run 6 hourly to 36 hr Single placeable/movable Storm Scale sub-nest ~1.5km Run 6 hourly to 36 hr Multiple placeable/movable Storm Scale sub-nests: ~1 km run hourly to 18 hr and Run 6 hourly to 36 hr Mesoscale Ensembles Replace Regional Deterministic Guidance 3

Current End of Phase End of 2 petaflop Machine WRF-ARW, WRF-NMM, NMMB WRF-ARW & NMMB 7 each= 21 members 16 km10 each= 20 members ~12 km10 each=20 members ~9 km (parent) 35 levels 6 hourly to 84 hr40 levels 6 hourly to 84 hr50/60 levels 6 hourly to 84 hr Product streams will be added, consolidated & repurposed (i.e. renamed). May have later delivery. Irregular suite of convective- allowing scale guidance 3-6 km every 6 hours run to 48/60 hr for CONUS, Alaska, HI, PR Single hourly 3 km [HRRR] Run to 15 hr for CONUS Upgrade irregular convective suite to 3 km still 6 hourly to 48/60 hr CONUS, Alaska, HI, PR Multiple hourly 3 km [HRRRE] Run to 24 hr for CONUS, Alaska, Hi, PR 6 hourly extended to 60 hr Single placeable Storm Scale sub-nest 1.33 km or 1.5 km Run 6 hourly to 36 hr Single placeable/movable Storm Scale sub-nest ~1.5km Run 6 hourly to 36 hr Multiple placeable/movable Storm Scale sub-nests: ~1 km run hourly to 18 hr and Run 6 hourly to 36 hr Mesoscale Ensembles Replace Regional Deterministic Guidance 4 WILL BE A MAJOR CHALLENGE

3 km CONUS Run to 24 hr 5 12 km parent Run to 24 hr 3 km PR-Hisp Run to 24 hr 3 km Hawaii Run to 24 hr 1 km FireWx Run to 24 hr 3 km Alaska Run to 24 hr 1 km FireWx Run to 24 hr Every NMMB-based member of the hourly HRRRE will have this makeup Every ARW-based member of the hourly HRRRE will have this makeup

Every NMMB-based member of SREF (extensions of HRRRE members) will have this makeup Every ARW-based member of SREF (extensions of HRRRE members) will have this makeup 3 km CONUS Run from 24 to 60 hr 6 12 km parent Run from 24 to 84 hr 3 km Hawaii Run from 24 to 60 hr 3 km PR-Hisp Run from 24 to 60 hr 3 km Alaska Run from 24 to 60 hr 1 km FireWx Run from 24 to 36 hr 1 km FireWx Run from 24 to 36 hr