Crisis Implementation of Patchy Snow Change + Upgrade to HiResWindow
Crisis Change Planned To Fix Nighttime Cold Bias Over Snow
Meso Eta and AVN 84hr Forecasts for 1/4/2002
Complaints About Nighttime Cold Bias Over Snow
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Time Series of Meso Eta Forecast Energy Fluxes etc valid 1/4/2002
Several Possible Causes Examined For the South Carolina Case
Problem Narrowed Down
2m Temperature Forecasts Before and After Change
Description of the Changes
July 2001 Bundle began to address this nighttime cold bias Cold Season Feb 2001 retrospective runs
Fits to Surface obs from recent 32-km parallel ETAV=control, ETAL=new soil heat flux (Western US – region with most persistent snow cover)
Changes Tested in Eta-32 Parallel
Changes to Daily Fixed Domain HiResWindow Runs
New Resolution HiResWindow Fixed-Domain Nested Runs
Nonhydrostatic Mesoscale Model
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Homeland Security
26 Selectable 4km domains for homeland security response
Author: Geoff DiMego
E-mail: geoff.dimego@noaa.gov
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