Studies on the Impacts of 3D-VAR Assimilation of Satellite Observations on the Simulation of Monsoon Depressions over India - Data Assimilation for Atmospheric, Oceanic and Hydrologic Applications - page 656

a b

c d

e f

Fig. 26.10 Improvement parameter for 24-h accumulated precipitation for MODIS ( a , b ), ATOVS
( c , d ) and SSM/I ( e , f ) for 19-22 September 2006 depression

RMSE of Temperature Profiles

The model predicted temperature and humidity profiles are verified with India
Meteorological Department (IMD) radiosonde observations for the 19-22 Septem-
ber 2006 depression. The RMSE values for the temperature and the dew-point
temperature are calculated for 10 vertical levels at three different times of forecast.
As mentioned before, the model values corresponding to each observation are taken
from the nearest model grid corresponding to the observation location. The domain
averaged RMSE for temperature profiles are presented in Table 26.2 .Aspartof
the verification, the RMSE of the temperature of the assimilation experiments are
compared with the RMSE of the temperature of the CTRL run. At 950 hPa level on
20 September 2006 12 UTC, the RMSE of temperature is found to be higher for the