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Variability of the aridity index and related drought parameters in Greece using climatological data over the last century (1900-1997) 期刊论文
ATMOSPHERIC RESEARCH, 2020, 240
作者:  Tsiros, Ioannis X.;  Nastos, Panagiotis;  Proutsos, Nikolaos D.;  Tsaousidis, Alexandros
收藏  |  浏览/下载:16/0  |  提交时间:2020/08/18
Drought  Aridity index  Mediterranean basin  Climate variability  Thornthwaite water balance model  
Ice retreat in Wilkes Basin of East Antarctica during a warm interglacial 期刊论文
NATURE, 2020, 583 (7817) : 554-+
作者:  T. Blackburn;  G. H. Edwards;  S. Tulaczyk;  M. Scudder;  G. Piccione;  B. Hallet;  N. McLean;  J. C. Zachos;  B. Cheney;  J. T. Babbe
收藏  |  浏览/下载:18/0  |  提交时间:2020/08/09

Uranium isotopes in subglacial precipitates from the Wilkes Basin of the East Antarctic Ice Sheet reveal ice retreat during a warm Pleistocene interglacial period about 400,000 years ago.


Efforts to improve sea level forecasting on a warming planet have focused on determining the temperature, sea level and extent of polar ice sheets during Earth'  s past interglacial warm periods(1-3). About 400,000 years ago, during the interglacial period known as Marine Isotopic Stage 11 (MIS11), the global temperature was 1 to 2 degrees Celsius greater(2)and sea level was 6 to 13 metres higher(1,3). Sea level estimates in excess of about 10 metres, however, have been discounted because these require a contribution from the East Antarctic Ice Sheet(3), which has been argued to have remained stable for millions of years before and includes MIS11(4,5). Here we show how the evolution of(234)U enrichment within the subglacial waters of East Antarctica recorded the ice sheet'  s response to MIS11 warming. Within the Wilkes Basin, subglacial chemical precipitates of opal and calcite record accumulation of(234)U (the product of rock-water contact within an isolated subglacial reservoir) up to 20 times higher than that found in marine waters. The timescales of(234)U enrichment place the inception of this reservoir at MIS11. Informed by the(234)U cycling observed in the Laurentide Ice Sheet, where(234)U accumulated during periods of ice stability(6)and was flushed to global oceans in response to deglaciation(7), we interpret our East Antarctic dataset to represent ice loss within the Wilkes Basin at MIS11. The(234)U accumulation within the Wilkes Basin is also observed in the McMurdo Dry Valleys brines(8-10), indicating(11)that the brine originated beneath the adjacent East Antarctic Ice Sheet. The marine origin of brine salts(10)and bacteria(12)implies that MIS11 ice loss was coupled with marine flooding. Collectively, these data indicate that during one of the warmest Pleistocene interglacials, the ice sheet margin at the Wilkes Basin retreated to near the precipitate location, about 700 kilometres inland from the current position of the ice margin, which-assuming current ice volumes-would have contributed about 3 to 4 metres(13)to global sea levels.


  
Understanding the Interfacial Behavior of Typical Perfluorocarboxylic Acids at Surfactant-Coated Aqueous Interfaces 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (13)
作者:  Cheng, Shumin;  Du, Lin;  George, Christian
收藏  |  浏览/下载:14/0  |  提交时间:2020/08/18
Langmuir film  Lipid  Mixed monolayer  Air-water interface  sea spray aerosol  Perfluorocarboxylic acids  
Exchange Dynamics of Typical Emerging and Legacy Persistent Organic Pollutants at the Air-Water Interface Over a Strongly Human-Influenced Large River Estuary 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (13)
作者:  Guo, Tianfeng;  Li, Yuanyuan;  Lin, Tian;  Wu, Zilan;  Jiang, Yuqing;  Guo, Zhigang
收藏  |  浏览/下载:7/0  |  提交时间:2020/08/18
BDE-209  PCB  air-water gas exchange  transport pathway  source-sink fate  
Spatial distribution of levoglucosan and alternative biomass burning tracers in atmospheric aerosols, in an urban and industrial hot-spot of Central Italy 期刊论文
ATMOSPHERIC RESEARCH, 2020, 239
作者:  Massimi, Lorenzo;  Simonetti, Giulia;  Buiarelli, Francesca;  Di Filippo, Patrizia;  Pomata, Donatella;  Riccardi, Carmela;  Ristorini, Martina;  Astolfi, Maria Luisa;  Canepari, Silvia
收藏  |  浏览/下载:9/0  |  提交时间:2020/08/18
Wood burning  Levoglucosan  Water-soluble element  Spatial variability  PCA  Size distribution  
Characterization and source analysis of water-soluble ions in PM2.5 at a background site in Central China 期刊论文
ATMOSPHERIC RESEARCH, 2020, 239
作者:  Xie, Yajun;  Lu, Haibo;  Yi, Aijun;  Zhang, Zhongyi;  Zheng, Nengjian;  Fang, Xiaozhen;  Xiao, Huayun
收藏  |  浏览/下载:11/0  |  提交时间:2020/08/18
PM2.5  SNA  Water-soluble ions characteristics  Formation mechanism  Source identification  Central China  
Evaluation of hot temperature extremes and heat waves in the Mississippi River Basin 期刊论文
ATMOSPHERIC RESEARCH, 2020, 239
作者:  Tavakol, Ameneh;  Rahmani, Vahid;  Harrington, John, Jr.
收藏  |  浏览/下载:10/0  |  提交时间:2020/08/18
Climatic nonstationarity  Hot extremes  Heat waves  Spatiotemporal trend analysis  Water  Change-point  Agriculture  Economy  Human and animal health  
Children drinking private well water have higher blood lead than those with city water 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (29) : 16898-16907
作者:  Gibson, Jacqueline MacDonald;  Fisher, Michael;  Clonch, Allison;  MacDonald, John M.;  Cook, Philip J.
收藏  |  浏览/下载:26/0  |  提交时间:2020/07/09
drinking water  private well  children'  s health  lead exposure  blood lead  
Acquiring environmental flows: ecological economics of policy development in western US 期刊论文
ECOLOGICAL ECONOMICS, 2020, 173
作者:  Colby, Bonnie
收藏  |  浏览/下载:10/0  |  提交时间:2020/08/18
Environmental flows  Markets  Water trading  Institutions  Conflict resolution  Patrimony  Social Ecological Economics of Water  Punctuated Equilibrium Theory  
Rooted water collectives: Towards an analytical framework 期刊论文
ECOLOGICAL ECONOMICS, 2020, 173
作者:  Vos, Jeroen;  Boelens, Rutgerd;  Venot, Jean-Philippe;  Kuper, Marcel
收藏  |  浏览/下载:5/0  |  提交时间:2020/08/18
Rooted water collectives  Common-pool resources management  Social movements  Federations  Water governance