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气候变化加剧的高温促使2022年北半球干旱发生 快报文章
气候变化快报,2022年第20期
作者:  秦冰雪
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:748/0  |  提交时间:2022/10/20
High Temperature  Climate Change  Northern Hemisphere Drought  
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:73/0  |  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.


  
Prediction of Northern Hemisphere Regional Surface Temperatures Using Stratospheric Ozone Information 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2019, 124 (12) : 5922-5933
作者:  Stone, Kane A.;  Solomon, Susan;  Kinnison, Douglas E.;  Baggett, Cory F.;  Barnes, Elizabeth A.
收藏  |  浏览/下载:16/0  |  提交时间:2019/11/26
ozone  subseasonal-to-seasonal prediction  regional surface temperature  stratosphere  Northern Hemisphere  
Dynamical evidence for causality between Northern Hemisphere annular mode and winter surface air temperature over Northeast Asia 期刊论文
CLIMATE DYNAMICS, 2019, 52: 3175-3182
作者:  Zhang, Nannan;  Wang, Geli;  Tsonis, Anastasios A.
收藏  |  浏览/下载:23/0  |  提交时间:2019/11/26
Northern Hemisphere annular mode  Convergent cross mapping  Surface air temperature over Northeast Asia  Causality  
Underestimated AMOC Variability and Implications for AMV and Predictability in CMIP Models 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2018, 45 (9) : 4319-4328
作者:  Yan, Xiaoqin;  Zhang, Rong;  Knutson, Thomas R.
收藏  |  浏览/下载:12/0  |  提交时间:2019/04/09
Atlantic Meridional Overturning Circulation  Atlantic Multidecadal Variation  Low-frequency  Northern hemisphere temperature  Decadal predictability  
Higher temperature variability reduces temperature sensitivity of vegetation growth in Northern Hemisphere 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2017, 44 (12)
作者:  Wu, Xiuchen;  Liu, Hongyan;  Li, Xiaoyan;  Piao, Shilong;  Ciais, Philippe;  Guo, Weichao;  Yin, Yi;  Poulter, Ben;  Peng, Changhui;  Viovy, Nicolas;  Vuichard, Nicolas;  Wang, Pei;  Huang, Yongmei
收藏  |  浏览/下载:37/0  |  提交时间:2019/04/09
temperature variability  interannual sensitivity  vegetation growth  drought  Northern Hemisphere  
NAO and its relationship with the Northern Hemisphere mean surface temperature in CMIP5 simulations 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2017, 122 (8)
作者:  Wang, Xiaofan;  Li, Jianping;  Sun, Cheng;  Liu, Ting
收藏  |  浏览/下载:8/0  |  提交时间:2019/04/09
CMIP5  North Atlantic Oscillation  Northern Hemisphere surface temperature  multidecadal variability