Dr. Jordan G. Powers Mesoscale and Microscale Meteorology Division NCAR Earth System Laboratory National Center for Atmospheric Research Boulder, CO WMO THORPEX Polar Prediction Workshop Oslo, Norway October 6, 2010 Antarctic Weather Antarctic Weather Prediction Prediction Activities— USA Activities— USA
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Dr. Jordan G. Powers Mesoscale and Microscale Meteorology Division NCAR Earth System Laboratory National Center for Atmospheric Research Boulder, CO WMO.
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Dr. Jordan G. Powers
Mesoscale and Microscale Meteorology Division
NCAR Earth System LaboratoryNational Center for Atmospheric
Research Boulder, CO
WMO THORPEX Polar Prediction WorkshopOslo, Norway
October 6, 2010
Antarctic Weather Prediction Antarctic Weather Prediction Activities— USAActivities— USA
Polar Numerical Weather Prediction— United States
• Arctic and Antarctic Regions
• NWP Operations
– NCEP (National Centers for Environmental Prediction)
▪ GFS: Global Forecasting SystemT574 (27 km)8-d forecasts
▪ Arctic latitudes
NAM: North American Mesoscale model
12-km grid4-day forecasts
Alaska Hi-Res Window (HRW): 5-km WRF-ARW
Polar Numerical Prediction— US
• NWP Operations (cont’d)
– High–latitude NAM and Hi-Res Windows (HRW)
Alaska HRWNAM
Polar Numerical Prediction— US
• NWP Operations (cont’d)– U.S. Air Force Weather Agency
▪ Arctic and Antarctic mesoscale forecasting: WRF▪ Forecast distribution restricted
– U.S. Navy ▪ NOGAPS: Navy Operational Global Atmospheric Prediction System
▪ Limited public products available (unclassified)
New York Air National Guard LC-130 Ice Runway, McMurdo
AMPS provides numerical guidance for SPAWAR forecasting forthe USAF, NYANG, Royal New Zealand AF, and other on-Ice air ops (e.g., helicopters, Twin Otters).
AMPS— Antarctic Air Support
AMPS: International Support
Italy Australia UK Germany South Africa Chile China New Zealand DROMLAN Group— Dronning Maud Land Air Network
Germany, Russia, India,
Japan, Norway, Sweden, Finland, Belgium, UK, South Africa
SA Agulhas (South Africa)(background)
RV Polarstern (Germany)(foreground)
Site: www.mmm.ucar.edu/rt/amps
Forecast Grid Product ChooserModel RunFcst hr
AMPS Display Page
Run Status
SLP3-h Precip
17 Sept 20101200 UTC init
Fcst period: 12 UTC 17 Sept–12 UTC 22 Sept
AMPS Forecast Products
Meteogram–South Pole
17 Sept 20101200 UTC init
Fcst period: 12 UTC 17 Sept–00 UTC 19 Sept
AMPS Forecast Products
NZSP South Pole (lat, lon) = (-90.00, 0.00)Forecast initialized at 2010091712AMPS 5-km SP domain FCST UTC T Tcorr Td Altim Spd Dir Grid VVV RH1RH2RH3 T1T2T3 ACCUMHR HR (C) (C) (C) (in.) (kts) (°) (°) (% wrt water) (C) 00 12 -63.9 -63.7 -51.5 28.42 11 41 41 -007 469078069 M53M42M39 000 01 13 -61.2 -62.1 -65.9 28.41 12 104 104 -008 054065068 M50M43M39 002 02 14 -57.3 -58.6 -61.8 28.38 15 91 91 -010 056066069 M48M41M38 002 03 15 -54.7 -56.0 -59.2 28.41 15 82 82 -010 057066069 M46M40M37 002 04 16 -52.9 -54.0 -57.4 28.39 12 72 72 -006 058066069 M45M40M37 002 05 17 -47.8 -49.0 -52.1 28.34 13 39 39 -003 061066069 M44M40M37 003 06 18 -45.6 -47.1 -49.8 28.35 16 23 23 -004 063067069 M43M39M37 003 07 19 -44.8 -46.0 -48.9 28.32 17 21 21 -005 063068069 M41M37M36 003 08 20 -44.3 -45.6 -48.5 28.34 17 22 22 -006 063068069 M41M37M36 002 09 21 -43.9 -45.1 -47.9 28.36 17 22 22 -006 064068069 M40M37M36 002 10 22 -43.2 -44.3 -47.2 28.33 18 19 19 -006 064068068 M40M37M36 002 11 23 -42.9 -44.1 -46.9 28.36 17 18 18 -006 064068068 M40M38M37 002 12 00 -42.8 -44.1 -46.9 28.38 17 15 15 -005 064068068 M40M38M37 002 * NOTES on units: VVV (vertical velocity) in tenths of a microbar per second at 700 hPa (positive– upward motion) ACCUM (accumulated precipitation, past 1h) is given as hundreths of a millimeter; RH1, RH2, and RH3 are the % RH at the surface, 1000', and 3000', respectively; T1, T2, and T3 are the temperatures at 500', 1000', and 1500', respectively.
Table– South Pole
AMPS Forecast Products
AMPS Archive• AMPS Forecasts Stored
– NCAR Mass Storage System
– MM5 and WRF forecast output Native model format GRIB subsets of output (Oct. 2008)
▪ Select fields (e.g., u, v, T, GHT) ▪ Mandatory and some selected levels