Transcript CFS Reanalysis EMC monitoring Cathy Thiaw Acknowledgements:

CFS Reanalysis
EMC monitoring
Cathy Thiaw
Acknowledgements:
Xiu-Juan Su, Bob Kistler, Russ Treadon
Reasons of the monitoring
• To diagnose problems
• To look at the performance of the
assimilation system
EMC will monitor:
• The radiance from the satellites
• The conventional data
Radiance Monitoring
Reanalysis Run
Every 6h
-radstat file
-biascr file
-satang file
Input
STATS
STATS
• Bias correction terms:
> mean correction
> nb of observations
> total bias correction
> fixed angle & scan angle correction
> observed-simulated (with or without bias corr.)
radiance statistics
> penalty
> lapse and lapse2
• Horizontal Plots
STATS FEATURES
• Function of the time
>>Plots will be made at defined time steps:
-end of each month
-end of each year
>>Statistic will be looked up from an angle
perspective (angle dependant plots) or
as a function of the time (time series)
• Spatial Distribution of Stats:
7 regions:
1. Global: 90S-90N, 0-360 E
2. NH: 20-80N, 0-360 E
3. SH: 20-80S, 0-360E
4. Tropics: 20S-20N, 0-360E
5. N. America : 25-55N, 125-65 W
6. Europe: 35-70N, 10W-25E
7. Asia: 5-45N, 65E-145E
Example: 199701
• Instruments: HIRS2-NOAA14 and MSUNOAA14
http://cfs.ncep.noaa.gov/cfsreanl/CFSRR/1997/199
701/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