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New consideration of lateral boundary treatment for meso- and micro-scale nested PBL simulations over complex terrain 期刊论文
Atmospheric Research, 2021
作者:  Zihan Zhao, Yiqing Xiao, Chao Li, Jinghan Wang, Gang Hu
收藏  |  浏览/下载:9/0  |  提交时间:2021/02/17
A study of the gas–water characteristics and their implications for the coalbed methane accumulation modes in the Southern Junggar Basin, China 期刊论文
AAPG Bulletin, 2021
作者:  Haijiao Fu;  Detian Yan;  Shuguang Yang;  Xiaoming Wang;  Gang Wang;  Xinguo Zhuang;  Luyuan Zhang;  Guoqing Li;  Xing Chen;  Zhejun Pan
收藏  |  浏览/下载:6/0  |  提交时间:2021/01/22
Evaluating co-emissions into indoor and outdoor air of EC, OC, and BC from in-home biomass burning 期刊论文
Atmospheric Research, 2020
作者:  Zhihan Luo, Lu Zhang, Gang Li, Wei Du, ... Guofeng Shen
收藏  |  浏览/下载:11/0  |  提交时间:2020/09/14
Evaluating co-emissions into indoor and outdoor air of EC, OC, and BC from the in-home biomass burning 期刊论文
Atmospheric Research, 2020
作者:  Zhihan Luo, Lu Zhang, Gang Li, Wei Du, ... Guofeng Shen
收藏  |  浏览/下载:9/0  |  提交时间:2020/09/08
Global variability in seawater Mg:Ca and Sr:Ca ratios in the modern ocean 期刊论文
Proceedings of the National Academy of Science, 2020
作者:  Mario Lebrato;  Dieter Garbe-Schönberg;  Marius N. Müller;  Sonia Blanco-Ameijeiras;  Richard A. Feely;  Laura Lorenzoni;  Juan-Carlos Molinero;  Karen Bremer;  Daniel O. B. Jones;  Debora Iglesias-Rodriguez;  Dana Greeley;  Miles D. Lamare;  Aurelien Paulmier;  Michelle Graco;  Joan Cartes;  Joana Barcelos e Ramos;  Ana de Lara;  Ricardo Sanchez-Leal;  Paz Jimenez;  Flavio E. Paparazzo;  Susan E. Hartman;  Ulrike Westernströer;  Marie Küter;  Roberto Benavides;  Armindo F. da Silva;  Steven Bell;  Chris Payne;  Solveig Olafsdottir;  Kelly Robinson;  Liisa M. Jantunen;  Alexander Korablev;  Richard J. Webster;  Elizabeth M. Jones;  Olivier Gilg;  Pascal Bailly du Bois;  Jacek Beldowski;  Carin Ashjian;  Nejib D. Yahia;  Benjamin Twining;  Xue-Gang Chen;  Li-Chun Tseng;  Jiang-Shiou Hwang;  Hans-Uwe Dahms;  Andreas Oschlies
收藏  |  浏览/下载:14/0  |  提交时间:2020/09/08
Multiple transpolar auroral arcs reveal insight about coupling processes in the Earth's magnetotail 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (28) : 16193-16198
作者:  Zhang, Qing-He;  Zhang, Yong-Liang;  Wang, Chi;  Lockwood, Michael;  Yang, Hui-Gen;  Tang, Bin-Bin;  Xing, Zan-Yang;  Oksavik, Kjellmar;  Lyons, Larry R.;  Ma, Yu-Zhang;  Zong, Qiu-Gang;  Moen, Joran Idar;  Xia, Li-Dong
收藏  |  浏览/下载:14/0  |  提交时间:2020/07/06
aurora  solar-terrestrial interaction  magnetosphere  polar ionosphere  transpolar auroral arcs  
Economics in the Age of COVID-19 期刊论文
NATURE, 2020, 581 (7809) : 375-377
作者:  Yin, Juan;  Li, Yu-Huai;  Liao, Sheng-Kai;  Yang, Meng;  Cao, Yuan;  Zhang, Liang;  Ren, Ji-Gang;  Cai, Wen-Qi;  Liu, Wei-Yue;  Li, Shuang-Lin;  Shu, Rong;  Huang, Yong-Mei;  Deng, Lei;  Li, Li;  Zhang, Qiang;  Liu, Nai-Le
收藏  |  浏览/下载:25/0  |  提交时间:2020/07/03

Breakneck triage nails many diagnoses, but deeper treatment is needed.


Breakneck triage nails many diagnoses, but deeper treatment is needed.


  
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.


  
Monumental architecture at Aguada Fenix and the rise of Maya civilization 期刊论文
NATURE, 2020
作者:  Bedding, Timothy R.;  Murphy, Simon J.;  Hey, Daniel R.;  Huber, Daniel;  Li, Tanda;  Smalley, Barry;  Stello, Dennis;  White, Timothy R.;  Ball, Warrick H.;  Chaplin, William J.;  Colman, Isabel L.;  Fuller, Jim;  Gaidos, Eric;  Harbeck, Daniel R.;  Hermes, J. J.;  Holdsworth, Daniel L.;  Li, Gang;  Li, Yaguang;  Mann, Andrew W.;  Reese, Daniel R.;  Sekaran, Sanjay;  Yu, Jie;  Antoci, Victoria;  Bergmann, Christoph;  Brown, Timothy M.;  Howard, Andrew W.;  Ireland, Michael J.;  Isaacson, Howard;  Jenkins, Jon M.;  Kjeldsen, Hans;  McCully, Curtis;  Rabus, Markus;  Rains, Adam D.;  Ricker, George R.;  Tinney, Christopher G.;  Vanderspek, Roland K.
收藏  |  浏览/下载:30/0  |  提交时间:2020/07/03

Archaeologists have traditionally thought that the development of Maya civilization was gradual, assuming that small villages began to emerge during the Middle Preclassic period (1000-350 bc  dates are calibrated throughout) along with the use of ceramics and the adoption of sedentism(1). Recent finds of early ceremonial complexes are beginning to challenge this model. Here we describe an airborne lidar survey and excavations of the previously unknown site of Aguada Fenix (Tabasco, Mexico) with an artificial plateau, which measures 1,400 m in length and 10 to 15 m in height and has 9 causeways radiating out from it. We dated this construction to between 1000 and 800 bc using a Bayesian analysis of radiocarbon dates. To our knowledge, this is the oldest monumental construction ever found in the Maya area and the largest in the entire pre-Hispanic history of the region. Although the site exhibits some similarities to the earlier Olmec centre of San Lorenzo, the community of Aguada Fenix probably did not have marked social inequality comparable to that of San Lorenzo. Aguada Fenix and other ceremonial complexes of the same period suggest the importance of communal work in the initial development of Maya civilization.


Lidar survey of the Maya lowlands uncovers the monumental site of Aguada Fenix, which dates to around 1000-800 bc and points to the role of communal construction in the development of Maya civilization.


  
Engineering covalently bonded 2D layered materials by self-intercalation 期刊论文
NATURE, 2020, 581 (7807) : 171-+
作者:  Shang, Jian;  Ye, Gang;  Shi, Ke;  Wan, Yushun;  Luo, Chuming;  Aihara, Hideki;  Geng, Qibin;  Auerbach, Ashley;  Li, Fang
收藏  |  浏览/下载:11/0  |  提交时间:2020/07/03

Two-dimensional (2D) materials(1-5) offer a unique platform from which to explore the physics of topology and many-body phenomena. New properties can be generated by filling the van der Waals gap of 2D materials with intercalants(6,7)  however, post-growth intercalation has usually been limited to alkali metals(8-10). Here we show that the self-intercalation of native atoms(11,12) into bilayer transition metal dichalcogenides during growth generates a class of ultrathin, covalently bonded materials, which we name ic-2D. The stoichiometry of these materials is defined by periodic occupancy patterns of the octahedral vacancy sites in the van der Waals gap, and their properties can be tuned by varying the coverage and the spatial arrangement of the filled sites(7,13). By performing growth under high metal chemical potential(14,15) we can access a range of tantalum-intercalated TaS(Se)(y), including 25% Ta-intercalated Ta9S16, 33.3% Ta-intercalated Ta7S12, 50% Ta-intercalated Ta10S16, 66.7% Ta-intercalated Ta8Se12 (which forms a Kagome lattice) and 100% Ta-intercalated Ta9Se12. Ferromagnetic order was detected in some of these intercalated phases. We also demonstrate that self-intercalated V11S16, In11Se16 and FexTey can be grown under metal-rich conditions. Our work establishes self-intercalation as an approach through which to grow a new class of 2D materials with stoichiometry- or composition-dependent properties.