| Fcst | Sfc/500 hPa | Surface | Surface | PBL | Surface | 850 hPa | 700 hPa | 500 hPa | 300 hPa | Image | Image |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 12-hr Loop | pcp/mslp/Dz | spd/dir | rainrate | PBL RH | total PW | T/wind | VV/wind | vort/wind | spd/dir | 11um | 6.7um |
The purpose of the CRAS is to test the use of satellite observations
in a numerical prediction model. The quality of a numerical forecast
depends on having accurate observations of the environment to define the
forecast model's initial state. Here is a list of the observations that are
currently used in the CRAS 12-hour spinnup forecast:
Total precipitable water (mm) from the EOS Aqua and Terra satellites (MODIS)
Cloud-top pressure (hPa) and effective cloud amount (%) from the EOS Aqua and Terra
satellites (MODIS)
Surface temperature (C), dew points (C) and winds (m/s)
Sea surface temperature (C) and sea ice coverage (%) from NCEP rtg analysis
Publications referring to CRAS
Return to CRAS Realtime Forecast Page
