Assimilation
of ATOVS level1C radiance and MODIS polar winds at JMA
Masahiro
Kazumori
JMA/NCEP
Abstract:
The
Japan Meteorological Agency (JMA) operates a model for global
forecasts. In order to improve
the forecast score of the global model, JMA has accelerated their
development of satellite
data assimilation in the operational global model by establishing a
sub-group in the numerical
prediction division of JMA in 2001. In this presentation, some of the
recent progress in satellite
data assimilation for the JMA global model will be presented.
Especially, the results of assimilation
experiments with ATOVS level 1C radiance and MODIS polar winds will be
shown. Because
the impacts of these data were positive for forecast scores, these data
have been assimilated
operationally.
The recent change in operational forecast scores and their comparison
with other NWP centers will
also be presented.