GSTDTAP

浏览/检索结果: 共7条,第1-7条 帮助

已选(0)清除 条数/页:   排序方式:
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:36/0  |  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.


  
Using Hydrological-Biogeochemical Linkages to Elucidate Carbon Dynamics in Coastal Marshes Subject to Relative Sea Level Rise 期刊论文
WATER RESOURCES RESEARCH, 2020, 56 (2)
作者:  Guimond, Julia A.;  Yu, Xuan;  Seyfferth, Angelia L.;  Michael, Holly A.
收藏  |  浏览/下载:21/0  |  提交时间:2020/07/02
coastal wetlands  sea level rise  carbon budgets  groundwater-surface water interaction  groundwater modeling  estuaries  
Observed Atmospheric and Surface Variability on Heterogeneous Terrain at the Hectometer Scale and Related Advective Transports 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2019, 124 (16) : 9407-9422
作者:  Simo, Gemma;  Cuxart, Joan;  Jimenez, Maria A.;  Martinez-Villagrasa, Daniel;  Picos, Rodrigo;  Lopez-Grifol, Alvaro;  Marti, Belen
收藏  |  浏览/下载:23/0  |  提交时间:2019/11/27
atmospheric and upper-soil variability  surface energy and water budgets  local thermal advection  station representativeness  humidity advection and evapotranspiration  hectometer scale  
Theoretical Understanding of the Linear Relationship between Convective Updrafts and Cloud-Base Height for Shallow Cumulus Clouds. Part I: Maritime Conditions 期刊论文
JOURNAL OF THE ATMOSPHERIC SCIENCES, 2019, 76 (8) : 2539-2558
作者:  Zheng, Youtong
收藏  |  浏览/下载:14/0  |  提交时间:2019/11/27
Buoyancy  Conservation equations  Cumulus clouds  Radiation budgets  Radiative transfer  Water vapor  
Unraveling past impacts of climate change and land management on historic peatland development using proxy-based reconstruction, monitoring data and process modeling 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (9) : 4131-4142
作者:  Heinemeyer, Andreas;  Swindles, Graeme T.
收藏  |  浏览/下载:21/0  |  提交时间:2019/04/09
carbon budgets  carbon emissions  MILLENNIA model  peat accumulation  peatland management  peatlands  testate amoebae  water-table  
Regional water budgets and hydroclimatic trend variations in Xinjiang from 1951 to 2000 期刊论文
CLIMATIC CHANGE, 2017, 144 (3)
作者:  Zheng, Ziyan;  Ma, Zhuguo;  Li, Mingxing;  Xia, Jiangjiang
收藏  |  浏览/下载:15/0  |  提交时间:2019/04/09
Climate change  North and South Xinjiang  Water budgets  Hydroclimatic trends  
Urban outdoor water use and response to drought assessed through mobile energy balance and vegetation greenness measurements 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2017, 12 (8)
作者:  Liang, L. L.;  Anderson, R. G.;  Shiflett, S. A.;  Jenerette, G. D.
收藏  |  浏览/下载:9/0  |  提交时间:2019/04/09
evapotranspiration  eddy covariance  regional water budgets  satellite remote sensing  urban  normalized differential vegetation index