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TWO BIAS CORRECTION SCHEMES FOR ATOVS RADIANCE DATA 总被引:1,自引:0,他引:1
To better assimilate Advanced TIROS Operational Vertical Sounder (ATOVS) radiance data
and provide more accurate initial fields for a numerical model, two bias correction schemes are employed
to correct the ATOVS radiance data. The difference in the two schemes lies in the predictors use in
air-mass bias correction. The predictors used in SCHEME 1 are all obtained from model first-guess, while
those in SCHEME 2 are from model first-guess and radiance observations. The results from the two
schemes show that after bias correction, the observation residual became smaller and closer to a Gaussian
distribution. For both land and ocean data sets, the results obtained from SCHEME 1 are similar to those
from SCHEME 2, which indicates that the predictors could be used in bias correction of ATOVS data. 相似文献
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