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Evaluation of land-atmosphere processes of the Polar WRF in the summertime Arctic tundra 期刊论文
ATMOSPHERIC RESEARCH, 2020, 240
作者:  Kim, Jeongwon;  Lee, Junhong;  Hong, Je-Woo;  Hong, Jinkyu;  Koo, Ja-Ho;  Kim, Joo-Hong;  Yun, Juyeol;  Nam, Sungjin;  Jung, Ji Young;  Choi, Taejin;  Lee, Bang Yong
收藏  |  浏览/下载:14/0  |  提交时间:2020/08/18
Polar WRF  Arctic tundra  Land-atmosphere interaction  Surface energy balance  Soil moisture  Planetary boundary layer  
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:19/0  |  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.


  
Adding value to extended-range forecasts in northern Europe by statistical post-processing using stratospheric observations 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (14) : 8441-8451
作者:  Korhonen, Natalia;  Hyvarinen, Otto;  Kamarainen, Matti;  Richardson, David S.;  Jarvinen, Heikki;  Gregow, Hilppa
收藏  |  浏览/下载:16/0  |  提交时间:2020/08/09
Fasting season length sets temporal limits for global polar bear persistence 期刊论文
NATURE CLIMATE CHANGE, 2020
作者:  Molnar, Peter K.;  Bitz, Cecilia M.;  Holland, Marika M.;  Kay, Jennifer E.;  Penk, Stephanie R.;  Amstrup, Steven C.
收藏  |  浏览/下载:19/0  |  提交时间:2020/08/09
Fast responses on pre-industrial climate from present-day aerosols in a CMIP6 multi-model study 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (14) : 8381-8404
作者:  Zanis, Prodromos;  Akritidis, Dimitris;  Georgoulias, Aristeidis K.;  Allen, Robert J.;  Bauer, Susanne E.;  Boucher, Olivier;  Cole, Jason;  Ben Johnson;  Deushi, Makoto;  Michou, Martine;  Mulcahy, Jane;  Nabat, Pierre;  Olivie, Dirk;  Oshima, Naga;  Sima, Adriana;  Schulz, Michael;  Takemura, Toshihiko;  Tsigaridis, Konstantinos
收藏  |  浏览/下载:16/0  |  提交时间:2020/08/18
Polar semivolatile organic compounds in biomass-burning emissions and their chemical transformations during aging in an oxidation flow reactor 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (13) : 8227-8250
作者:  Sengupta, Deep;  Samburova, Vera;  Bhattarai, Chiranjivi;  Watts, Adam C.;  Moosmueller, Hans;  Khlystov, Andrey Y.
收藏  |  浏览/下载:7/0  |  提交时间:2020/07/21
Microphysical Properties of Generating Cells Over the Southern Ocean: Results From SOCRATES 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (13)
作者:  Wang, Yang;  McFarquhar, Greg M.;  Rauber, Robert M.;  Zhao, Chuanfeng;  Wu, Wei;  Finlon, Joseph A.;  Stechman, Daniel M.;  Stith, Jeffery;  Jensen, Jorgen B.;  Schnaiter, Martin;  Jarvinen, Emma;  Waitz, Fritz;  Vivekanandan, Jothiram;  Dixon, Michael;  Rainwater, Bryan;  Toohey, Darin W.
收藏  |  浏览/下载:28/0  |  提交时间:2020/08/18
generating cells  microphysical properties  Southern Ocean  
Temperature Inversion and Clouds Over the Arctic Ocean Observed by the 5th Chinese National Arctic Research Expedition 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (13)
作者:  Wang, Ding;  Guo, Jianping;  Chen, Aijun;  Bian, Lingen;  Ding, Minghu;  Liu, Lin;  Lv, Yanmin;  Li, Jian;  Guo, Xiaoran;  Han, Yi
收藏  |  浏览/下载:14/0  |  提交时间:2020/08/18
cloud  temperature inversion  radiosonde  Arctic  
Marine productivity and synoptic meteorology drive summer-time variability in Southern Ocean aerosols 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (13) : 8047-8062
作者:  Alroe, Joel;  Cravigan, Luke T.;  Miljevic, Branka;  Johnson, Graham R.;  Selleck, Paul;  Humphries, Ruhi S.;  Keywood, Melita D.;  Chambers, Scott D.;  Williams, Alastair G.;  Ristovski, Zoran D.
收藏  |  浏览/下载:8/0  |  提交时间:2020/07/14
The effect of considering polar vortex dynamics in the validation of satellite total ozone observations 期刊论文
ATMOSPHERIC RESEARCH, 2020, 238
作者:  Paschou, Peristera;  Koukouli, Maria-Elissavet;  Balis, Dimitrios;  Lerot, Christophe;  Van Roozendael, Michel
收藏  |  浏览/下载:7/0  |  提交时间:2020/08/18
Total ozone column  GOME2  OMI  Validation  Potential vorticity