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Long-term (1980-2018) spatial and temporal variability of the atmospheric dust load and deposition fluxes along the North-African coast of the Mediterranean Sea 期刊论文
ATMOSPHERIC RESEARCH, 2020, 234
作者:  Bibi, Mariem;  Saad, Mohamed;  Masmoudi, Mohamed;  Laurent, Benoit;  Alfaro, Stephane C.
收藏  |  浏览/下载：16/0  |  提交时间：2020/07/02
Mediterranean  Mineral dust  Optical depth  Surface concentration  Deposition  MERRA-2  
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：41/0  |  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.


  
Summer albedo variations in the Arctic Sea ice region from 1982 to 2015 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019
作者:  Peng, Hai-Tao;  Ke, Chang-Qing;  Shen, Xiaoyi;  Li, Mengmeng;  Shao, Zhu-De
收藏  |  浏览/下载：32/0  |  提交时间：2020/02/17
albedo  Arctic Sea ice region  Central Arctic Index  near-surface air temperature  sea ice concentration  trend  
Comparison of North Atlantic Oscillation-related changes in the North Atlantic sea ice and associated surface quantities on different time scales 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019
作者:  Wu, Renguang;  Wang, Yuqi
收藏  |  浏览/下载：34/0  |  提交时间：2020/02/17
different time scales  meridional advection  NAO  sea ice concentration  surface air temperature  
The characteristics of hourly wind field and its impacts on air quality in the Pearl River Delta region during 2013-2017 期刊论文
ATMOSPHERIC RESEARCH, 2019, 227: 112-124
作者:  Xie, Jielan;  Liao, Zhiheng;  Fang, Xingqin;  Xu, Xinqi;  Wang, Yu;  Zhang, Yu;  Liu, Jian;  Fan, Shaojia;  Wang, Baomin
收藏  |  浏览/下载：25/0  |  提交时间：2019/11/27
Objective surface wind classification  Cluster analysis  Synoptic interpretation  Spatial distribution of air pollutant concentration  Air quality  Pearl River Delta region  
Effects of mesophyll conductance on vegetation responses to elevated CO2 concentrations in a land surface model 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (5) : 1820-1838
作者:  Knauer, Juergen;  Zaehle, Soenke;  De Kauwe, Martin G.;  Bahar, Nur H. A.;  Evans, John R.;  Medlyn, Belinda E.;  Reichstein, Markus;  Werner, Christiane
收藏  |  浏览/下载：20/0  |  提交时间：2019/11/26
elevated CO2 concentrations  land surface modeling  mesophyll conductance  photosynthetic CO2 sensitivity  representative concentration pathways  
Seasonal soil moisture and drought occurrence in Europe in CMIP5 projections for the 21st century 期刊论文
CLIMATE DYNAMICS, 2018, 50: 1177-1192
作者:  Ruosteenoja, Kimmo;  Markkanen, Tiina;  Venalainen, Ari;  Raisanen, Petri;  Peltola, Heli
收藏  |  浏览/下载：8/0  |  提交时间：2019/04/09
Near-surface soil moisture  CMIP5 GCMs  Representative concentration pathways (RCPs)  Climate change  Model validation  
Climatic anomalous patterns associated with the Arctic and Polar cell strength variations 期刊论文
CLIMATE DYNAMICS, 2017, 48
作者:  Qian, Weihong;  Wu, Kaijun;  Leung, Jeremy Cheuk-Hin
收藏  |  浏览/下载：23/0  |  提交时间：2019/04/09
Arctic cell  Polar cell  Interannual variability  Surface air temperature  Precipitation  Sea-ice concentration