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Role of Atmospheric Variability in Driving the "Warm-Arctic, Cold-Continent" Pattern Over the North America Sector and Sea Ice Variability Over the Chukchi-Bering Sea 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Guan, Weina;  Jiang, Xianan;  Ren, Xuejuan;  Chen, Gang;  Ding, Qinghua
收藏  |  浏览/下载：15/0  |  提交时间：2020/06/09
Arctic warming  surface air temperature  sea ice loss  atmospheric variability  large-scale circulation  
The past and future of global river ice 期刊论文
NATURE, 2020, 577 (7788) : 69-+
作者:  Yang, Xiao;  Pavelsky, Tamlin M.;  Allen, George H.
收藏  |  浏览/下载：6/0  |  提交时间：2020/05/13

More than one-third of Earth'  s landmass is drained by rivers that seasonally freeze over. Ice transforms the hydrologic(1,2), ecologic(3,4), climatic(5) and socio-economic(6-8) functions of river corridors. Although river ice extent has been shown to be declining in many regions of the world(1), the seasonality, historical change and predicted future changes in river ice extent and duration have not yet been quantified globally. Previous studies of river ice, which suggested that declines in extent and duration could be attributed to warming temperatures(9,10), were based on data from sparse locations. Furthermore, existing projections of future ice extent are based solely on the location of the 0-degrees C isotherm11. Here, using satellite observations, we show that the global extent of river ice is declining, and we project a mean decrease in seasonal ice duration of 6.10 +/- 0.08 days per 1-degrees C increase in global mean surface air temperature. We tracked the extent of river ice using over 400,000 clear-sky Landsat images spanning 1984-2018 and observed a mean decline of 2.5 percentage points globally in the past three decades. To project future changes in river ice extent, we developed an observationally calibrated and validated model, based on temperature and season, which reduced the mean bias by 87 per cent compared with the 0-degree-Celsius isotherm approach. We applied this model to future climate projections for 2080-2100: compared with 2009-2029, the average river ice duration declines by 16.7 days under Representative Concentration Pathway (RCP) 8.5, whereas under RCP 4.5 it declines on average by 7.3 days. Our results show that, globally, river ice is measurably declining and will continue to decline linearly with projected increases in surface air temperature towards the end of this century.


  
Season-dependent warming characteristics observed at 12 stations in South Korea over the recent 100 years 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2018, 38 (11) : 4092-4101
作者:  Choi, Woosuk;  Ho, Chang-Hoi;  Kim, Maeng-Ki;  Kim, Jinwon;  Yoo, Hee-Dong;  Jhun, Jong-Ghap;  Jeong, Jee-Hoon
收藏  |  浏览/下载：9/0  |  提交时间：2019/04/09
abrupt jump  change-point analysis  frequency distribution  surface air temperature  warming trend  
Land Surface Air Temperature Data Are Considerably Different Among BEST-LAND, CRU-TEM4v, NASA-GISS, and NOAA-NCEI 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2018, 123 (11) : 5881-5900
作者:  Rao, Yuhan;  Liang, Shunlin;  Yu, Yunyue
收藏  |  浏览/下载：5/0  |  提交时间：2019/04/09
land surface air temperature  intercomparison  surface warming  warming hiatus  
Land surface air temperature variations over Eurasia and possible causes in the past century 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2018, 38 (4) : 1925-1937
作者:  Zuo, Zhiyan;  Yang, Song;  Xu, Kang;  Zhang, Renhe;  He, Qiong;  Zhao, Tianbao;  Cong, Jing
收藏  |  浏览/下载：7/0  |  提交时间：2019/04/09
land surface air temperature  warming  Eurasia  inter-annual to decadal variations  multi-decadal variation  
Low-frequency snow changes over the Tibetan Plateau 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2018, 38 (2) : 949-963
作者:  Wang, Zhibiao;  Wu, Renguang;  Huang, Gang
收藏  |  浏览/下载：7/0  |  提交时间：2019/04/09
Tibetan Plateau snow  low-frequency change  surface air warming  regional feature  seasonal dependence  
Climatic warming in China during 1901-2015 based on an extended dataset of instrumental temperature records 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2017, 12 (6)
作者:  Cao, Lijuan;  Yan, Zhongwei;  Zhao, Ping;  Zhu, Yani;  Yu, Yu;  Tang, Guoli;  Jones, Phil
收藏  |  浏览/下载：5/0  |  提交时间：2019/04/09
surface air temperature (SAT)  long-term meteorological observations  homogenization  China  global warming