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Warming trends increasingly dominate global ocean 期刊论文
NATURE CLIMATE CHANGE, 2020
作者:  Johnson, Gregory C.;  Lyman, John M.
收藏  |  浏览/下载:7/0  |  提交时间:2020/07/21
Light limitation regulates the response of autumn terrestrial carbon uptake to warming 期刊论文
NATURE CLIMATE CHANGE, 2020
作者:  Zhang, Yao;  Commane, Roisin;  Zhou, Sha;  Williams, A. Park;  Gentine, Pierre
收藏  |  浏览/下载:14/0  |  提交时间:2020/07/09
Abrupt increase in harvested forest area over Europe after 2015 期刊论文
NATURE, 2020, 583 (7814) : 72-+
作者:  Guido Ceccherini;  Gregory Duveiller;  Giacomo Grassi;  Guido Lemoine;  Valerio Avitabile;  Roberto Pilli;  Alessandro Cescatti
收藏  |  浏览/下载:19/0  |  提交时间:2020/07/06

Fine-scale satellite data are used to quantify forest harvest rates in 26 European countries, finding an increase in harvested forest area of 49% and an increase in biomass loss of 69% between 2011-2015 and 2016-2018.


Forests provide a series of ecosystem services that are crucial to our society. In the European Union (EU), forests account for approximately 38% of the total land surface(1). These forests are important carbon sinks, and their conservation efforts are vital for the EU'  s vision of achieving climate neutrality by 2050(2). However, the increasing demand for forest services and products, driven by the bioeconomy, poses challenges for sustainable forest management. Here we use fine-scale satellite data to observe an increase in the harvested forest area (49 per cent) and an increase in biomass loss (69 per cent) over Europe for the period of 2016-2018 relative to 2011-2015, with large losses occurring on the Iberian Peninsula and in the Nordic and Baltic countries. Satellite imagery further reveals that the average patch size of harvested area increased by 34 per cent across Europe, with potential effects on biodiversity, soil erosion and water regulation. The increase in the rate of forest harvest is the result of the recent expansion of wood markets, as suggested by econometric indicators on forestry, wood-based bioenergy and international trade. If such a high rate of forest harvest continues, the post-2020 EU vision of forest-based climate mitigation may be hampered, and the additional carbon losses from forests would require extra emission reductions in other sectors in order to reach climate neutrality by 2050(3).


  
Expanding wetland hydroperiod data via satellite imagery for ecological applications 期刊论文
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 2020
作者:  Kissel, Amanda M.;  Halabisky, Meghan;  Scherer, Rick D.;  Ryan, Maureen E.;  Hansen, Eric C.
收藏  |  浏览/下载:9/0  |  提交时间:2020/08/18
Global reduction of solar power generation efficiency due to aerosols and panel soiling 期刊论文
NATURE SUSTAINABILITY, 2020
作者:  Li, Xiaoyuan;  Mauzerall, Denise L.;  Bergin, Mike H.
收藏  |  浏览/下载:7/0  |  提交时间:2020/06/29
Quantifying the drivers and predictability of seasonal changes in African fire 期刊论文
NATURE COMMUNICATIONS, 2020, 11 (1)
作者:  Yu, Yan;  Mao, Jiafu;  Thornton, Peter E.;  Notaro, Michael;  Wullschleger, Stan D.;  Shi, Xiaoying;  Hoffman, Forrest M.;  Wang, Yaoping
收藏  |  浏览/下载:9/0  |  提交时间:2020/06/16
Patterns and trends of Northern Hemisphere snow mass from 1980 to 2018 期刊论文
NATURE, 2020, 581 (7808) : 294-+
作者:  Ibrahim, Nizar;  Maganuco, Simone;  Dal Sasso, Cristiano;  Fabbri, Matteo;  Auditore, Marco;  Bindellini, Gabriele;  Martill, David M.;  Zouhri, Samir;  Mattarelli, Diego A.;  Unwin, David M.;  Wiemann, Jasmina;  Bonadonna, Davide;  Amane, Ayoub;  Jakubczak, Juliana;  Joger, Ulrich;  Lauder, George V.;  Pierce, Stephanie E.
收藏  |  浏览/下载:16/0  |  提交时间:2020/05/25

Warming surface temperatures have driven a substantial reduction in the extent and duration of Northern Hemisphere snow cover(1-3). These changes in snow cover affect Earth'  s climate system via the surface energy budget, and influence freshwater resources across a large proportion of the Northern Hemisphere(4-6). In contrast to snow extent, reliable quantitative knowledge on seasonal snow mass and its trend is lacking(7-9). Here we use the new GlobSnow 3.0 dataset to show that the 1980-2018 annual maximum snow mass in the Northern Hemisphere was, on average, 3,062 +/- 35 billion tonnes (gigatonnes). Our quantification is for March (the month that most closely corresponds to peak snow mass), covers non-alpine regions above 40 degrees N and, crucially, includes a bias correction based on in-field snow observations. We compare our GlobSnow 3.0 estimates with three independent estimates of snow mass, each with and without the bias correction. Across the four datasets, the bias correction decreased the range from 2,433-3,380 gigatonnes (mean 2,867) to 2,846-3,062 gigatonnes (mean 2,938)-a reduction in uncertainty from 33% to 7.4%. On the basis of our bias-corrected GlobSnow 3.0 estimates, we find different continental trends over the 39-year satellite record. For example, snow mass decreased by 46 gigatonnes per decade across North America but had a negligible trend across Eurasia  both continents exhibit high regional variability. Our results enable a better estimation of the role of seasonal snow mass in Earth'  s energy, water and carbon budgets.


Applying a bias correction to a state-of-the-art dataset covering non-alpine regions of the Northern Hemisphere and to three other datasets yields a more constrained quantification of snow mass in March from 1980 to 2018.


  
Remote sensing northern lake methane ebullition 期刊论文
NATURE CLIMATE CHANGE, 2020, 10 (6) : 511-+
作者:  Engram, M.;  Anthony, K. M. Walter;  Sachs, T.;  Kohnert, K.;  Serafimovich, A.;  Grosse, G.;  Meyer, F. J.
收藏  |  浏览/下载:7/0  |  提交时间:2020/05/13
Coldest Canadian Arctic communities face greatest reductions in shorefast sea ice 期刊论文
NATURE CLIMATE CHANGE, 2020, 10 (6) : 533-+
作者:  Cooley, Sarah W.;  Ryan, Jonathan C.;  Smith, Laurence C.;  Horvat, Chris;  Pearson, Brodie;  Dale, Brigt;  Lynch, Amanda H.
收藏  |  浏览/下载:6/0  |  提交时间:2020/05/13
High Resolution Modeling of River-Floodplain-Reservoir Inundation Dynamics in the Mekong River Basin 期刊论文
WATER RESOURCES RESEARCH, 2020, 56 (5)
作者:  Shin, Sanghoon;  Pokhrel, Yadu;  Yamazaki, Dai;  Huang, Xiaodong;  Torbick, Nathan;  Qi, Jiaguo;  Pattanakiat, Sura;  Thanh Ngo-Duc;  Nguyen Duc Tuan
收藏  |  浏览/下载:13/0  |  提交时间:2020/07/02