Abstracts for the 6th International GAME Conf.
3-5 December 2004
Kyoto Japan
A COMPARISON OF REANALYSIS DATA BETWEEN GAME AND NCEP/NCAR DURING THE PERIOD OF HUBEX
Weijing Li (1), Rongqing Han (1), Guoquan Hu (1), Jinhai He (4)
(1) National Climate Center, CMA, China
(4) Nanjing Institute of Meteorology, China
A comparison of the GAME with the NCEP/NCAR reanalysis data is discussed, where the GAME reanalysis data includes the data observed by HUBEX. On the basis of the weather processes over the Huaihe Basin from June to August in 1998, the difference and reliability of the two reanalysis data from the fields of basic element, derivative, precipitation, and surface flux were studied by the diagnostic and statistical methods. The results show that the GAME reanalysis data is more reliable than NCEP/NCAR reanalysis data at the bottom and mid-high levels of troposphere, and the precipitation and surface flux fields of GAME reanalysis data is also better than NCEP data. In addition, it revealed that the GAME reanalysis data can show the evolution of the southwest vortex but the NCEP/NCAR reanalysis data can not do so. Meanwhile, the main cause that the GAME reanalysis data is better than the NCEP reanalysis data may be the GAME reanalysis data including the sonde intensive observation of the GAME but not to be the different assimilation modes of the two reanalysis data. Therefore it also indicates that the HUBEX as the Eastern Asian part of the GAME is necessary to continue, and increasing the temporal and spatial resolution of meteorological elements observed is important to improve our forecasting accuracy of the weather and climate.
Submittal Information
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National Climate Center, CMA, P.R. China | |
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National Climate Center, CMA, Beijing 100081, P.R. China | |
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