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DOI	10.1007/s00382-018-4329-6
	Global diurnal temperature range (DTR) changes since 1901
	Sun X.; Ren G.; You Q.; Ren Y.; Xu W.; Xue X.; Zhan Y.; Zhang S.; Zhang P.
发表日期	2019
ISSN	0930-7575
起始页码	3343
结束页码	3356
卷号	52 期号:2020-05-06
英文摘要	Previous observational analyses show that the land-surface diurnal temperature range (DTR) has decreased in the past 6 decades worldwide. Based on a newly developed China Meteorological Administration–Land Surface Air Temperature (CMA-LSAT) dataset, we analyzed the DTR changes between 1901 and 2014. Results indicate that the global land surface DTR significantly decreased at a rate of − 0.036 °C decade − 1 over the 1901–2014 period, mainly due to the large decrease in DTR from 1951 to 2014. For the first half of the twentieth century, most grid boxes (spatial resolution 5° × 5°) show a positive DTR trend, with the positive trends of 32.4% grid boxes being statistically significant, leading to a large and significant increase of 0.048 °C decade − 1 in DTR. However, a dramatic reversal in DTR change occurred in early 1950s, with most parts of global lands exhibiting a shift from increasing to decreasing trends. The global land average DTR decrease during 1951–2014 was − 0.054 °C decade − 1 , with 45.0% grid boxes showing significant negative trends. The reverse phenomenon is more obvious in the Northern Hemisphere than that in the Southern Hemisphere. For the periods 1979–2014 and 1998–2014, the decreasing trends in DTR mainly occur in the Northern Hemisphere. The DTR in the Southern Hemisphere experienced much larger increases during the two recent periods than during the period 1951–2014. Asia, Eastern North America, and Australia exhibited widespread decreases in DTR, although the trend pattern for global DTR is generally mixed during 1979–2014 and 1998–2014. There is a good negative correlation between DTR and precipitation in the Northern Hemisphere from 1901 to 2014, with a correlation coefficient of − 0.61. The change in precipitation and number of volcanic eruptions, and the “early brightening” of Europe (Stockholm) all benefit the increase of DTR at global and regional scales in the first half of the twentieth century. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	DTR; Global lands; Maximum temperature; Minimum temperature; Trends
语种	英语
scopus关键词	air temperature; climate change; diurnal variation; Northern Hemisphere; Southern Hemisphere; temperature anomaly; trend analysis; China
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146467
作者单位	College of Atmospheric Science, Nanjing University of Information Science and Technology (NUIST), Nanjing, 210044, China; Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences (CUG), Wuhan, 430074, China; Laboratory for Climate Studies, National Climate Center, China Meteorological Administration (CMA), Beijing, 100081, China; National Meteorological Information Center, China Meteorological Administration (CMA), Beijing, 100081, China
推荐引用方式 GB/T 7714	Sun X.,Ren G.,You Q.,et al. Global diurnal temperature range (DTR) changes since 1901[J],2019,52(2020-05-06).
APA	Sun X..,Ren G..,You Q..,Ren Y..,Xu W..,...&Zhang P..(2019).Global diurnal temperature range (DTR) changes since 1901.Climate Dynamics,52(2020-05-06).
MLA	Sun X.,et al."Global diurnal temperature range (DTR) changes since 1901".Climate Dynamics 52.2020-05-06(2019).