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The effect of particulate matter on solar photovoltaic power generation over the Republic of Korea 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2020, 15 (8)
作者:  Son, Junghoon;  Jeong, Sujong;  Park, Hayoung;  Park, Chang-Eui
收藏  |  浏览/下载:16/0  |  提交时间:2020/08/18
air quality  solar photovoltaic  particulate matter  solar power generation  
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:21/0  |  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.


  
Climate From the McMurdo Dry Valleys, Antarctica, 1986-2017: Surface Air Temperature Trends and Redefined Summer Season 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (13)
作者:  Obryk, M. K.;  Doran, P. T.;  Fountain, A. G.;  Myers, M.;  McKay, C. P.
收藏  |  浏览/下载:6/0  |  提交时间:2020/08/18
McMurdo Dry Valleys  weather observations  summer season  
Reply to: Multiple drivers of Miocene C(4)ecosystem expansions 期刊论文
NATURE GEOSCIENCE, 2020, 13 (7) : 465-+
作者:  Polissar, Pratigya J.;  Rose, Cassaundra;  Uno, Kevin T.;  Phelps, Samuel R.;  deMenocal, Peter
收藏  |  浏览/下载:6/0  |  提交时间:2020/07/06
The increasing likelihood of temperatures above 30 to 40 degrees C in the United Kingdom 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Christidis, Nikolaos;  McCarthy, Mark;  Stott, Peter A.
收藏  |  浏览/下载:14/0  |  提交时间:2020/07/06
Extreme climate after massive eruption of Alaska's Okmok volcano in 43 BCE and effects on the late Roman Republic and Ptolemaic Kingdom 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (27) : 15443-15449
作者:  McConnell, Joseph R.;  Sigl, Michael;  Plunkett, Gill;  Burke, Andrea;  Kim, Woon Mi;  Raible, Christoph C.;  Wilson, Andrew, I;  Manning, Joseph G.;  Ludlow, Francis;  Chellman, Nathan J.;  Innes, Helen M.;  Yang, Zhen;  Larsen, Jessica F.;  Schaefer, Janet R.;  Kipfstuhl, Sepp;  Mojtabavi, Seyedhamidreza;  Wilhelms, Frank;  Opel, Thomas;  Meyer, Hanno;  Steffensen, Jorgen Peder
收藏  |  浏览/下载:17/0  |  提交时间:2020/06/29
ice core  volcano  Okmok  Rome  climate forcing  
Southern Ocean carbon sink enhanced by sea-ice feedbacks at the Antarctic Cold Reversal 期刊论文
NATURE GEOSCIENCE, 2020, 13 (7) : 489-+
作者:  Fogwill, C. J.;  Turney, C. S. M.;  Menviel, L.;  Baker, A.;  Weber, M. E.;  Ellis, B.;  Thomas, Z. A.;  Golledge, N. R.;  Etheridge, D.;  Rubino, M.;  Thornton, D. P.;  van Ommen, T. D.;  Moy, A. D.;  Curran, M. A. J.;  Davies, S.;  Bird, M., I;  Munksgaard, N. C.;  Rootes, C. M.;  Millman, H.;  Vohra, J.;  Rivera, A.;  Mackintosh, A.;  Pike, J.;  Hall, I. R.;  Bagshaw, E. A.;  Rainsley, E.;  Bronk-Ramsey, C.;  Montenari, M.;  Cage, A. G.;  Harris, M. R. P.;  Jones, R.;  Power, A.;  Love, J.;  Young, J.;  Weyrich, L. S.;  Cooper, A.
收藏  |  浏览/下载:14/0  |  提交时间:2020/06/29
Twentieth Century Black Carbon and Dust Deposition on South Cascade Glacier, Washington State, USA, as Reconstructed From a 158-m-Long Ice Core 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (11)
作者:  Kaspari, S. D.;  Pittenger, D.;  Jenk, T. M.;  Morgenstern, U.;  Schwikowski, M.;  Buenning, N.;  Stott, L.
收藏  |  浏览/下载:16/0  |  提交时间:2020/08/18
light absorbing particles  black carbon  dust  ice core  cascades  melt  
Record Lack of Cyclones in Southern Australia During 2019 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Pepler, Acacia
收藏  |  浏览/下载:12/0  |  提交时间:2020/06/22
anticyclone  cyclone  reanalysis  trend  drought  Australia  
Enriched East Asian oxygen isotope of precipitation indicates reduced summer seasonality in regional climate and westerlies 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (26) : 14745-14750
作者:  Chiang, John C. H.;  Herman, Michael J.;  Yoshimura, Kei;  Fung, Inez Y.
收藏  |  浏览/下载:7/0  |  提交时间:2020/06/16
paleoclimate  monsoon  westerlies  East Asia