The methods used in surface air temperature change estimation in Chinese Mainland during recent 20 years are summarized in this paper, and data materials, temporal scale and results in different researcher's study are contrastively analyzed. Based on the meteorological observation air temperature data from 1970 to 2007 and several popular warming estimation methods internationally used, we estimated the warming trend in recent 40 years. The results of direct average method, calculation by station method, regional area weighted method, first difference method and spatial interpolation method show the same warming trend in recent years and every season in Chinese Mainland, but vary in quantities clearly. The uncertainties in warming estimation with different methods are analyzed and it is concluded that the warming trend in recent 40 years ranges from 0.30-0.43℃/10a, the warming amplitude is between 1.16 and 1.56℃, warming is most apparent in winter and slightest in summer, warming in the northern part is more than in the southern part.
SUN Chaoyang, SHAO Quanqin, LIU Jiyuan
. Application Analysis of Surface Air Temperature Change Estimation Methods in Chinese Mainland[J]. Journal of Geo-information Science, 2012
, 14(1)
: 14
-21
.
DOI: 10.3724/SP.J.1047.2012.00014
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