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CR 90:31-43 (2023)  -  DOI:

Observed changes in temperature and precipitation over Asia, 1901-2020

Guoyu Ren1,2,*, Yunjian Zhan3, Yuyu Ren2, Kangmin Wen4, Yingxian Zhang2, Xiubao Sun5, Panfeng Zhang1,6, Xiang Zheng2, Yun Qin1,2, Siqi Zhang1,2, Jiajun He1

1Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences (CUG), Wuhan 430074, PR China
2National Climate Center, China Meteorological Administration (CMA), Beijing 100081, PR China
3National Meteorological Information Center, China Meteorological Administration, Beijing 100081, PR China
4Fuzhou Meteorological Bureau, Fuzhou 350028, PR China
5State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, PR China
6School of Tourism and Geographical Sciences, Jilin Normal University, Siping 136000, PR China
*Corresponding author:

ABSTRACT: Asia is the largest continent in the world and home to 4.7 billion people. Climate change on this continent, therefore, attracts a significant amount of attention from scientists and policy-makers. However, observational studies of long-term climate change over the continent as a whole are lacking. Using updated, homogenized observational data from stations in Asia since 1901 and systematic-bias-adjusted data from stations in China after 1950, we analyzed the long-term trends of surface air temperature (SAT) and precipitation in Asia and China from 1901-2020. The results showed that (1) in the 120 yr between 1901 and 2020, the annual mean SAT rose significantly at rates of 0.13 ± 0.01 and 0.14 ± 0.03°C decade-1 in Asia and China, respectively. The year 2020 in Asia may have been the warmest year since the beginning of the 20th century. (2) Since 1901, in both Asia and China, the annual mean minimum temperature increased more than twice as fast as the maximum temperature, and the diurnal temperature range (DTR) dropped significantly. (3) From 1901-2019, the annual precipitation anomaly percentage in Asia showed a significant increasing trend at an average rate of 0.52 ± 0.10% decade-1, and the increase was more obvious in high latitudes than in low to mid-latitudes. (4) Since 1901, there has been no significant change in annual precipitation in China, but there was a weak and non-significant decrease in the first half of the 20th century and a significant increase after the mid 20th century. The results presented in this paper can help us understand the spatio-temporal patterns and causes of climate change in the Asian continent and Chinese mainland.

KEY WORDS: Asia · China · Surface air temperature · Precipitation · Change trend · Climate warming · Observational data

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Cite this article as: Ren G, Zhan Y, Ren Y, Wen K and others (2023) Observed changes in temperature and precipitation over Asia, 1901-2020. Clim Res 90:31-43.

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