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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:32/0  |  提交时间:2020/06/22
anticyclone  cyclone  reanalysis  trend  drought  Australia  
Asynchronous carbon sink saturation in African and Amazonian tropical forests 期刊论文
NATURE, 2020, 579 (7797) : 80-+
作者:  Wannes Hubau;  Simon L. Lewis;  Oliver L. Phillips;  Kofi Affum-Baffoe;  Hans Beeckman;  Aida Cuní;  -Sanchez;  Armandu K. Daniels;  Corneille E. N. Ewango;  Sophie Fauset;  Jacques M. Mukinzi;  Douglas Sheil;  Bonaventure Sonké;  Martin J. P. Sullivan;  Terry C. H. Sunderland;  Hermann Taedoumg;  Sean C. Thomas;  Lee J. T. White;  Katharine A. Abernethy;  Stephen Adu-Bredu;  Christian A. Amani;  Timothy R. Baker;  Lindsay F. Banin;  Fidè;  le Baya;  Serge K. Begne;  Amy C. Bennett;  Fabrice Benedet;  Robert Bitariho;  Yannick E. Bocko;  Pascal Boeckx;  Patrick Boundja;  Roel J. W. Brienen;  Terry Brncic;  Eric Chezeaux;  George B. Chuyong;  Connie J. Clark;  Murray Collins;  James A. Comiskey;  David A. Coomes;  Greta C. Dargie;  Thales de Haulleville;  Marie Noel Djuikouo Kamdem;  Jean-Louis Doucet;  Adriane Esquivel-Muelbert;  Ted R. Feldpausch;  Alusine Fofanah;  Ernest G. Foli;  Martin Gilpin;  Emanuel Gloor;  Christelle Gonmadje;  Sylvie Gourlet-Fleury;  Jefferson S. Hall;  Alan C. Hamilton;  David J. Harris;  Terese B. Hart;  Mireille B. N. Hockemba;  Annette Hladik;  Suspense A. Ifo;  Kathryn J. Jeffery;  Tommaso Jucker;  Emmanuel Kasongo Yakusu;  Elizabeth Kearsley;  David Kenfack;  Alexander Koch;  Miguel E. Leal;  Aurora Levesley;  Jeremy A. Lindsell;  Janvier Lisingo;  Gabriela Lopez-Gonzalez;  Jon C. Lovett;  Jean-Remy Makana;  Yadvinder Malhi;  Andrew R. Marshall;  Jim Martin;  Emanuel H. Martin;  Faustin M. Mbayu;  Vincent P. Medjibe;  Vianet Mihindou;  Edward T. A. Mitchard;  Sam Moore;  Pantaleo K. T. Munishi;  Natacha Nssi Bengone;  Lucas Ojo;  Fidè;  le Evouna Ondo;  Kelvin S.-H. Peh;  Georgia C. Pickavance;  Axel Dalberg Poulsen;  John R. Poulsen;  Lan Qie;  Jan Reitsma;  Francesco Rovero;  Michael D. Swaine;  Joey Talbot;  James Taplin;  David M. Taylor;  Duncan W. Thomas;  Benjamin Toirambe;  John Tshibamba Mukendi;  Darlington Tuagben;  Peter M. Umunay;  Geertje M. F. van der Heijden;  Hans Verbeeck;  Jason Vleminckx;  Simon Willcock;  Hannsjö;  rg Wö;  ll;  John T. Woods;  Lise Zemagho
收藏  |  浏览/下载:72/0  |  提交时间:2020/05/13

Structurally intact tropical forests sequestered about half of the global terrestrial carbon uptake over the 1990s and early 2000s, removing about 15 per cent of anthropogenic carbon dioxide emissions(1-3). Climate-driven vegetation models typically predict that this tropical forest '  carbon sink'  will continue for decades(4,5). Here we assess trends in the carbon sink using 244 structurally intact African tropical forests spanning 11 countries, compare them with 321 published plots from Amazonia and investigate the underlying drivers of the trends. The carbon sink in live aboveground biomass in intact African tropical forests has been stable for the three decades to 2015, at 0.66 tonnes of carbon per hectare per year (95 per cent confidence interval 0.53-0.79), in contrast to the long-term decline in Amazonian forests(6). Therefore the carbon sink responses of Earth'  s two largest expanses of tropical forest have diverged. The difference is largely driven by carbon losses from tree mortality, with no detectable multi-decadal trend in Africa and a long-term increase in Amazonia. Both continents show increasing tree growth, consistent with the expected net effect of rising atmospheric carbon dioxide and air temperature(7-9). Despite the past stability of the African carbon sink, our most intensively monitored plots suggest a post-2010 increase in carbon losses, delayed compared to Amazonia, indicating asynchronous carbon sink saturation on the two continents. A statistical model including carbon dioxide, temperature, drought and forest dynamics accounts for the observed trends and indicates a long-term future decline in the African sink, whereas the Amazonian sink continues to weaken rapidly. Overall, the uptake of carbon into Earth'  s intact tropical forests peaked in the 1990s. Given that the global terrestrial carbon sink is increasing in size, independent observations indicating greater recent carbon uptake into the Northern Hemisphere landmass(10) reinforce our conclusion that the intact tropical forest carbon sink has already peaked. This saturation and ongoing decline of the tropical forest carbon sink has consequences for policies intended to stabilize Earth'  s climate.


  
Recent changes in the drought of China from 1960 to 2014 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019
作者:  Wu, Zhitao;  Yu, Lu;  Du, Ziqiang;  Zhang, Hong;  Fan, Xiaohui;  Lei, Tianjie
收藏  |  浏览/下载:14/0  |  提交时间:2020/02/17
China  drought-affected area  drought frequency  drought trend  SPEI_PM  
Spatial assessment of meteorological drought features over different climate regions in Iran 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019
作者:  Sharafati, Ahmad;  Nabaei, Sina;  Shahid, Shamsuddin
收藏  |  浏览/下载:15/0  |  提交时间:2019/11/27
drought  Iran  Mann-Kendall trend test  Standardized Precipitation Index  
Spatial and temporal patterns of drought in Oklahoma (1901-2014) 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019, 39 (7) : 3365-3378
作者:  Tian, Liyan;  Quiring, Steven M.
收藏  |  浏览/下载:13/0  |  提交时间:2019/11/26
drought  hydroclimate  precipitation  spatiotemporal  SPEI  trend  variability  
Spatial and temporal patterns, trends and teleconnection of cumulative rainfall deficits across Central America 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2019, 39 (4) : 1940-1953
作者:  Munoz-Jimenez, Rudy;  Diego Giraldo-Osorio, Juan;  Brenes-Torres, Alonso;  Avendano-Flores, Isabel;  Nauditt, Alexandra;  Hidalgo-Leon, Hugo G.;  Birkel, Christian
收藏  |  浏览/下载:14/0  |  提交时间:2019/11/26
Central America  ENSO  Mann-Kendall trend test  meteorological drought  rainfall deficit  SPI  Tropics  
Historical analysis (1981-2017) of drought severity and magnitude over a predominantly arid region of Pakistan 期刊论文
CLIMATE RESEARCH, 2019, 78 (3) : 189-204
作者:  Hina, Saadia;  Saleem, Farhan
收藏  |  浏览/下载:18/0  |  提交时间:2019/11/26
Drought indices  Severity  Trend analysis  Climate change  Pakistan  
Increasing concurrent drought and heat during the summer maize season in Huang-Huai-Hai Plain, China 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2018, 38 (7) : 3177-3190
作者:  Wang, Lijun;  Liao, Shuhua;  Huang, Shoubing;  Ming, Bo;  Meng, Qingfeng;  Wang, Pu
收藏  |  浏览/下载:11/0  |  提交时间:2019/04/09
climate change trend  concurrent events  drought  heat  Huang-Huai-Hai Plain  
Innovative trend analysis of annual and seasonal rainfall and extreme values in Shaanxi, China, since the 1950s 期刊论文
INTERNATIONAL JOURNAL OF CLIMATOLOGY, 2017, 37 (5)
作者:  Wu, Hao;  Qian, Hui
收藏  |  浏览/下载:7/0  |  提交时间:2019/04/09
trend analysis  rainfall  innovative trend analysis  ITA  Mann-Kendall  drought  Shaanxi