By using GPS observation data, the NCEP/NCAR reanalysis data, the NCEP/DOE reanalysis data and the JRA-25 reanalysis data, the features of precipitation in the eastern Yunnan in 2009 is investigated. The results show that the annual mean precipitation in 2009 is decreasing from south side to north side in Yunnan, and the annual characteristics of the monthly mean precipitation in 2009 present the unimodal distribution. The difference among the values of precipitation estimated by these four data is clear in every month, and the values of precipitation estimated by three reanalysis data are all less than that by GPS observation in every month. Analyzing the daily mean precipitation by the four kinds of data, the trend of the precipitation increases from south side to north side in the eastern Yunnan. But it is difficult to present the procedure of precipitation boosting from south side to north side in Yunnan at the beginning of the rainy season period by three reanalysis data. From the case study, the precipitation variation by the JRA-25 reanalysis data is same as that by GPS observation in the short time scale, so the precipitation of JRA-25 reanalysis data is more reliable than the other reanalysis data.
REN Juzhang
,
SUN Jihua
,
LI Jian
,
XU Kai
. Comparison of Precipitation in Yunnan from GPS Observation Data and Three Reanalysis Data[J]. Plateau Meteorology, 2014
, 33(6)
: 1480
-1489
.
DOI: 10.7522/j.issn.1000-0534.2013.00114
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