气候变化领域集成服务门户(CCPortal): Lake Heatwaves and Cold-Spells Across Qinghai-Tibet Plateau Under Climate Change

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DOI	10.1029/2023JD039243
	Lake Heatwaves and Cold-Spells Across Qinghai-Tibet Plateau Under Climate Change
	Zhang, Kexin; Yao, Yulong
发表日期	2023
ISSN	2169-897X
EISSN	2169-8996
卷号	128 期号:16
英文摘要	Lake heatwaves (LHWs) and cold-spells (LCSs), similar to marine heatwaves and cold-spells, can have long-term impacts on lake ecosystems and are vulnerable to climate change. Here we first comparatively assess LHW and LCS changes across the Qinghai-Tibet Plateau (QTP) using satellite surface water temperature observations in 160 lakes over 1978-2017. Our findings reveal notable differences in the mean and trends of LHW and LCS metrics. Specifically, total days and frequency of LHW have been increasing at a rate of 8.82 +/- 1.25 days per decade and 0.78 +/- 0.10 counts per decade, respectively. Conversely, total days and frequency of LCS have decreased at -6.52 +/- 1.46 days per decade and -0.51 +/- 0.01 counts per decade, respectively. However, average duration and mean intensity show no significant difference. Additionally, the average duration of ice cover across the QTP has been decreasing (-2.60 +/- 0.38 days per decade) due to the delayed freezing date (1.13 +/- 0.18 days per decade) and earlier thawing date (-1.28 +/- 0.27 days per decade) during 1978-2017. Furthermore, the annual mean lake surface water temperatures across the QTP exhibit a warming trend (0.00 similar to 0.47 degrees C per decade) from 1978 to 2017, with faster warming occurring in winter (0.00 similar to 0.98 degrees C per decade) compared to summer (-0.17 similar to 0.47 degrees C per decade). Accelerated lake warming will increase the frequency and mean intensity of LHWs while decreasing the number of LCSs. These results help to understand how QTP lakes respond to extreme temperatures under climate change.
关键词	lake heatwave lake cold-spell Qinghai-Tibet Plateau climate change
英文关键词	NORTHERN-HEMISPHERE; ICE; RESPONSES
WOS研究方向	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001054796200001
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282718
作者单位	Guizhou University of Finance & Economics; Chinese Academy of Sciences; South China Sea Institute of Oceanology, CAS; Chinese Academy of Sciences; South China Sea Institute of Oceanology, CAS
推荐引用方式 GB/T 7714	Zhang, Kexin,Yao, Yulong. Lake Heatwaves and Cold-Spells Across Qinghai-Tibet Plateau Under Climate Change[J],2023,128(16).
APA	Zhang, Kexin,&Yao, Yulong.(2023).Lake Heatwaves and Cold-Spells Across Qinghai-Tibet Plateau Under Climate Change.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,128(16).
MLA	Zhang, Kexin,et al."Lake Heatwaves and Cold-Spells Across Qinghai-Tibet Plateau Under Climate Change".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 128.16(2023).