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Great Lakes levels are likely to see continued rise in next three decades 新闻
来源平台:American Geophysical Union. 发布日期:2022
作者:  admin
收藏  |  浏览/下载:10/0  |  提交时间:2022/06/24
Today’s extreme droughts could become average in the future 新闻
来源平台:National Center of Atmospheric Research. 发布日期:2022
作者:  admin
收藏  |  浏览/下载:7/0  |  提交时间:2022/06/24
Drought and heat wave experts available to explain research and potential impacts 新闻
来源平台:National Center of Atmospheric Research. 发布日期:2021
作者:  admin
收藏  |  浏览/下载:39/0  |  提交时间:2021/07/26
Millennial-scale hydroclimate control of tropical soil carbon storage 期刊论文
NATURE, 2020, 581 (7806) : 63-+
作者:  Lam, Tommy Tsan-Yuk;  Jia, Na;  Zhang, Ya-Wei;  Shum, Marcus Ho-Hin;  Jiang, Jia-Fu;  Zhu, Hua-Chen;  Tong, Yi-Gang;  Shi, Yong-Xia;  Ni, Xue-Bing;  Liao, Yun-Shi;  Li, Wen-Juan;  Jiang, Bao-Gui;  Wei, Wei;  Yuan, Ting-Ting;  Zheng, Kui;  Cui, Xiao-Ming;  Li, Jie;  Pei, Guang-Qian
收藏  |  浏览/下载:25/0  |  提交时间:2020/05/13

Over the past 18,000 years, the residence time and amount of soil carbon stored in the Ganges-Brahmaputra basin have been controlled by the intensity of Indian Summer Monsoon rainfall, with greater carbon destabilization during wetter, warmer conditions.


The storage of organic carbon in the terrestrial biosphere directly affects atmospheric concentrations of carbon dioxide over a wide range of timescales. Within the terrestrial biosphere, the magnitude of carbon storage can vary in response to environmental perturbations such as changing temperature or hydroclimate(1), potentially generating feedback on the atmospheric inventory of carbon dioxide. Although temperature controls the storage of soil organic carbon at mid and high latitudes(2,3), hydroclimate may be the dominant driver of soil carbon persistence in the tropics(4,5)  however, the sensitivity of tropical soil carbon turnover to large-scale hydroclimate variability remains poorly understood. Here we show that changes in Indian Summer Monsoon rainfall have controlled the residence time of soil carbon in the Ganges-Brahmaputra basin over the past 18,000 years. Comparison of radiocarbon ages of bulk organic carbon and terrestrial higher-plant biomarkers with co-located palaeohydrological records(6) reveals a negative relationship between monsoon rainfall and soil organic carbon stocks on a millennial timescale. Across the deglaciation period, a depletion of basin-wide soil carbon stocks was triggered by increasing rainfall and associated enhanced soil respiration rates. Our results suggest that future hydroclimate changes in tropical regions are likely to accelerate soil carbon destabilization, further increasing atmospheric carbon dioxide concentrations.


  
NASA study: Human influence on global droughts goes back 100 years 新闻
来源平台:EurekAlert! - Earth Science. 发布日期:2019
作者:  admin
收藏  |  浏览/下载:7/0  |  提交时间:2019/05/16
Understanding tropical rainfall, both past and present 新闻
来源平台:Science X network. 发布日期:2019
作者:  admin
收藏  |  浏览/下载:5/0  |  提交时间:2019/04/16
Trends of daily precipitation concentration in Central-Southern Chile 期刊论文
ATMOSPHERIC RESEARCH, 2019, 215: 85-98
作者:  Sarricolea, Pablo;  Meseguer-Ruiz, Oliver;  Serrano-Notivoli, Roberto;  Victoria Soto, Marla;  Martin-Vide, Javier
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/09
Concentration Index  Chile  Daily precipitation  Moving windows  Pacific Decadal Oscillation  Precipitation trends  
Climatic and volcanic forcing of tropical belt northern boundary over the past 800 years 期刊论文
NATURE GEOSCIENCE, 2018, 11 (12) : 933-+
作者:  Alfaro-Sanchez, R.;  Nguyen, H.;  Klesse, S.;  Hudson, A.;  Belmecheri, S.;  Kose, N.;  Diaz, H. F.;  Monson, R. K.;  Villalba, R.;  Trouet, V.
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/09
East Asian hydroclimate modulated by the position of the westerlies during Termination I 期刊论文
SCIENCE, 2018, 362 (6414) : 580-+
作者:  Zhang, Hongbin;  Griffiths, Michael L.;  Chiang, John C. H.;  Kong, Wenwen;  Wu, Shitou;  Atwood, Alyssa;  Huang, Junhua;  Cheng, Hai;  Ning, Youfeng;  Xie, Shucheng
收藏  |  浏览/下载:13/0  |  提交时间:2019/11/27
Using tree ring records to decode Earth's climate history 新闻
来源平台:Science X network. 发布日期:2018
作者:  admin
收藏  |  浏览/下载:1/0  |  提交时间:2019/04/17