downscaled gfs with extended eta (dgex)
Post on 19-Jan-2016
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Downscaled GFS with Extended Eta (DGEX)
• 12 km, 60 level (downscaled locally to 5km using SmartInit scripts)
• CONUS at 06 and 18Z, AK at 00 and 12Z• 84-192 h, 6-h frequency• New DGEX grids will be developed and added to
production with content to be defined by the ISST.
• CONUS DGEX on AWIPS Grid 218. Alaska DGEX on AWIPS Grid 242.
• SBN’s TG2 channel to carry DGEX data
Expanded HPC Medium-Range Support
• HPC is working to implement the NWS Corporate Board Decision• HPC forecasts at 390 MOS points are available in text format• Also available are HPC forecasts on a 5-km grid using information from ~6000
MOS points and PRISM to add detail to temperatures• Products available now on HPC ftp site:
– max/min temperatures – 12-hour PoP
• Estimated dates for additional fields– dewpoint - Jun 2004– sky cover - Aug 2004– wind direction & speed - Sep 2004
• Problematic fields: weather type, intensity, & character• WFOs can develop smart tools to incorporate local effects• WFOs modify HPC grids at their discretion• WFOs populate the NDFD
HPC day 5 minimum temperature forecast
valid May 4, 2004
Winter Weather Experiment 3 (2003-2004)Overview of Participants & Activities
•Two WFO sectors
• Intermountain (IM) - GREEN
• Non IM - RED
• Total of 77 WFOs
•HPC produced WWE graphics
•Available via HPC website
•WFO-HPC Collaboration
•Scheduled ~15-minute call twice daily
•Also via 12 Planet
Winter Weather Experiment 3 (2003-2004) WFO feedback implications for next winter
• HPC internal products for WFOs should include– Visualization of model preferences, trends, and winter-
weather-related diagnostics NOT already available at WFOs
– Accumulation graphics of S/IP & ZR like previous WWEs but in 24h increments out to 72h
– Notification of product availability via 12 Planet• WFO-HPC collaboration should occur primarily in 12 Planet
– WFOs prefer to collaborate initially WFO to WFO using HPC products as a reference
– HPC-WFO calls should be reserved for when collaboration via 12 Planet is not efficient
• Initiated by WFO– HPC testing 5-minute recorded “streaming”
video map discussion for internal NWS use• HPC public product issuance deadlines
should be changed – To allow more time to prepare internal
NWS products and collaborate with WFOs
Probability of 4-7"
Probability of 8-11" Probability of 12+"
Expected Amounts
24
Streaming Video Test
A Proposed 4-panel Public Product
1998
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