发表时间:2019-01-31作者:院办公室浏览次数:打印文本大小:

Satellite observations have a major positive impact on the accuracy of Numerical Weather Prediction. They are used in advanced Data Assimilation systems, including variational, ensemble and hybrid methods. In order to assimilate satellite observations directly, which is proven to be most effective, a fast and accurate radiative transfer model is essential. Many countries have invested in developments of fast radiative transfer models through their space and NWP programs. As the capability of these models has improved, the range of satellite data that can be successfully assimilated has increased. For example the use of observations in areas of cloud and precipitation, that were initially excluded from assimilation, has become very successful. In 2019, the Chinese Meteorological Administration (CMA) and the European Center for Medium-Range Weather Forecast (ECMWF) will jointly hold an international workshop in Beijing, China on radiative transfer models in support of satellite data assimilation. The specific goals of this workshop will be (1) reviewing the current capabilities of fast radiative transfer models, (2) understanding new requirements on radiative transfer models for satellite data assimilation, and (3) prioritizing new developments of superfast computation in atmospheric and surface radiative transfer processes. New aspects can in particular cover developments for observations sensitive not only to the atmosphere, which is often well represented by existing models, but other Earth System components (e.g. ocean, sea ice, snow, land, atmospheric composition). It will also address, where appropriate, shortcomings in the models that fast models are trained on, such as line-by-line transmittance models.

The workshop venue: Beijing, China

Time: April 29- May 3, 2019

POC: Ms. Liye Li (hiwico@cma.gov.cn, +86 10 58994280)