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Mass balance of the Greenland Ice Sheet from 1992 to 2018 期刊论文
NATURE, 2020, 579 (7798) : 233-+
作者:  Scudellari, Megan
收藏  |  浏览/下载：11/0  |  提交时间：2020/04/16

The Greenland Ice Sheet has been a major contributor to global sea-level rise in recent decades(1,2), and it is expected to continue to be so(3). Although increases in glacier flow(4-6) and surface melting(7-9) have been driven by oceanic(10-12) and atmospheric(13,14) warming, the magnitude and trajectory of the ice sheet'  s mass imbalance remain uncertain. Here we compare and combine 26 individual satellite measurements of changes in the ice sheet'  s volume, flow and gravitational potential to produce a reconciled estimate of its mass balance. The ice sheet was close to a state of balance in the 1990s, but annual losses have risen since then, peaking at 345 +/- 66 billion tonnes per year in 2011. In all, Greenland lost 3,902 +/- 342 billion tonnes of ice between 1992 and 2018, causing the mean sea level to rise by 10.8 +/- 0.9 millimetres. Using three regional climate models, we show that the reduced surface mass balance has driven 1,964 +/- 565 billion tonnes (50.3 per cent) of the ice loss owing to increased meltwater runoff. The remaining 1,938 +/- 541 billion tonnes (49.7 per cent) of ice loss was due to increased glacier dynamical imbalance, which rose from 46 +/- 37 billion tonnes per year in the 1990s to 87 +/- 25 billion tonnes per year since then. The total rate of ice loss slowed to 222 +/- 30 billion tonnes per year between 2013 and 2017, on average, as atmospheric circulation favoured cooler conditions(15) and ocean temperatures fell at the terminus of Jakobshavn Isbr AE(16). Cumulative ice losses from Greenland as a whole have been close to the rates predicted by the Intergovernmental Panel on Climate Change for their high-end climate warming scenario(17), which forecast an additional 70 to 130 millimetres of global sea-level rise by 2100 compared with their central estimate.


  
Human origins in a southern African palaeo-wetland and first migrations 期刊论文
Nature, 2019, 575: 185-189
作者:  Eva K. F. Chan;  Axel Timmermann;  Benedetta F. Baldi;  Andy E. Moore;  Ruth J. Lyons;  Sun-Seon Lee;  Anton M. F. Kalsbeek;  Desiree C. Petersen;  Hannes Rautenbach;  Hagen E. A. F枚rtsch;  M. S. Riana Bornman;  Vanessa M. Hayes
收藏  |  浏览/下载：8/0  |  提交时间：2019/11/27
Microbial ecosystem dynamics drive fluctuating nitrogen loss in marine anoxic zones 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (15) : 7220-7225
作者:  Penn, Justin L.;  Weber, Thomas;  Chang, Bonnie X.;  Deutsch, Curtis
收藏  |  浏览/下载：15/0  |  提交时间：2019/11/27
microbial ecology  oxygen minimum zones  nitrogen cycle  species oscillations  
Severe haze in northern China: A synergy of anthropogenic emissions and atmospheric processes 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (18) : 8657-8666
作者:  An, Zhisheng;  Huang, Ru-Jin;  Zhang, Renyi;  Tie, Xuexi;  Li, Guohui;  Cao, Junji;  Zhou, Weijian;  Shi, Zhengguo;  Han, Yongming;  Gu, Zhaolin;  Ji, Yuemeng
收藏  |  浏览/下载：11/0  |  提交时间：2019/11/27
severe haze  synergetic effects  anthropogenic emission  atmospheric chemistry  climate change  
Climate models can correctly simulate the continuum of global-average temperature variability 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (18) : 8728-8733
作者:  Zhu, Feng;  Emile-Geay, Julien;  McKay, Nicholas P.;  Hakim, Gregory J.;  Khider, Deborah;  Ault, Toby R.;  Steig, Eric J.;  Dee, Sylvia;  Kirchner, James W.
收藏  |  浏览/下载：22/0  |  提交时间：2019/11/27
climate variability  spectral analysis  scaling laws  model evaluation  
Impacts of climate change on future air quality and human health in China 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (35) : 17193-17200
作者:  Hong, Chaopeng;  Zhang, Qiang;  Zhang, Yang;  Davis, Steven J.;  Tong, Dan;  Zheng, Yixuan;  Liu, Zhu;  Guan, Dabo;  He, Kebin;  Schellnhuber, Hans Joachim
收藏  |  浏览/下载：11/0  |  提交时间：2019/11/27
climate change  air quality  health  extreme event  China  
Jet stream dynamics, hydroclimate, and fire in California from 1600 CE to present 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (12) : 5393-5398
作者:  Eugene R. Wahl;  Eduardo Zorita;  Valerie Trouet;  and Alan H. Taylor
收藏  |  浏览/下载：11/0  |  提交时间：2019/11/27
jet stream  precipitation  fire  California  paleoclimatology  
Widespread global peatland establishment and persistence over the last 130,000 y 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (11) : 4822-4827
作者:  Treat, Claire C.;  Kleinen, Thomas;  Broothaerts, Nils;  Dalton, April S.;  Dommain, Rene;  Douglas, Thomas A.;  Drexler, Judith Z.;  Finkelstein, Sarah A.;  Grosse, Guido;  Hope, Geoffrey;  Hutchings, Jack;  Jones, Miriam C.;  Kuhry, Peter;  Lacourse, Terri;  Lahteenoja, Outi;  Loisel, Julie;  Notebaert, Bastiaan;  Payne, Richard J.;  Peteet, Dorothy M.;  Sannel, A. Britta K.;  Stelling, Jonathan M.;  Strauss, Jens;  Swindles, Graeme T.;  Talbot, Julie;  Tarnocai, Charles;  Verstraeten, Gert;  Williams, Christopher J.;  Xia, Zhengyu;  Yu, Zicheng;  Valiranta, Minna;  Hattestrand, Martina;  Alexanderson, Helena;  Brovkin, Victor
收藏  |  浏览/下载：17/0  |  提交时间：2019/11/27
peatlands  carbon  methane  carbon burial  Quaternary  
Jet stream dynamics, hydroclimate, and fire in California from 1600 CE to present 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (12) : 5393-5398
作者:  Wahl, Eugene R.;  Zorita, Eduardo;  Trouet, Valerie;  Taylor, Alan H.
收藏  |  浏览/下载：13/0  |  提交时间：2019/11/27
jet stream  precipitation  fire  California  paleoclimatology  
Proglacial freshwaters are significant and previously unrecognized sinks of atmospheric CO2 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (36) : 17690-17695
作者:  St Pierre, Kyra A.;  St Louis, Vincent L.;  Schiff, Sherry L.;  Lehnherr, Igor;  Dainard, Paul G.;  Gardner, Alex S.;  Aukes, Pieter J. K.;  Sharp, Martin J.
收藏  |  浏览/下载：7/0  |  提交时间：2019/11/27
glacial meltwaters  carbon  biogeochemistry  freshwater