CFS Reanalysis

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CFS Reanalysis EMC monitoring
Cathy Thiaw
Acknowledgements Xiu-Juan Su, Bob Kistler, Russ
Treadon
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Reasons of the monitoring

• To diagnose problems
• To look at the performance of the assimilation
  system

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EMC will monitor

• The radiance from the satellites
• The conventional data

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Radiance Monitoring
Reanalysis Run

• Every 6h
• radstat file
• biascr file
• satang file

STATS
Input
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STATS

• Bias correction terms
• gt mean correction
• gt nb of observations
• gt total bias correction
• gt fixed angle scan angle correction
• gt observed-simulated (with or without bias
  corr.) radiance statistics
• gt penalty
• gt lapse and lapse2
• Horizontal Plots

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STATS FEATURES

• Function of the time
• gtgtPlots will be made at defined time steps
• -end of each month
• -end of each year
• gtgtStatistic will be looked up from an angle
  perspective (angle dependant plots) or
• as a function of the time (time series)

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• Spatial Distribution of Stats
• 7 regions
• Global 90S-90N, 0-360 E
• NH 20-80N, 0-360 E
• SH 20-80S, 0-360E
• Tropics 20S-20N, 0-360E
• N. America 25-55N, 125-65 W
• Europe 35-70N, 10W-25E
• Asia 5-45N, 65E-145E

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Example 199701

• Instruments HIRS2-NOAA14 and MSU-NOAA14
• http//cfs.ncep.noaa.gov/cfsreanl/CFSRR/1997/19970
  1/inputm/EMC/radiance/prd19.html
• Our goal setup a monitoring system similar to
  Operational GDAS monitoring system
• http//www.emc.ncep.noaa.gov/gmb/gdas/radiance/su/
  opr/index.html