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DOI	10.1029/2018MS001574
	PEAT-CLSM: A Specific Treatment of Peatland Hydrology in the NASA Catchment Land Surface Model
	Bechtold M.; De Lannoy G.J.M.; Koster R.D.; Reichle R.H.; Mahanama S.P.; Bleuten W.; Bourgault M.A.; Brümmer C.; Burdun I.; Desai A.R.; Devito K.; Grünwald T.; Grygoruk M.; Humphreys E.R.; Klatt J.; Kurbatova J.; Lohila A.; Munir T.M.; Nilsson M.B.; Price J.S.; Röhl M.; Schneider A.; Tiemeyer B.
发表日期	2019
ISSN	19422466
起始页码	2130
结束页码	2162
卷号	11 期号:7
英文摘要	Peatlands are poorly represented in global Earth system modeling frameworks. Here we add a peatland-specific land surface hydrology module (PEAT-CLSM) to the Catchment Land Surface Model (CLSM) of the NASA Goddard Earth Observing System (GEOS) framework. The amended TOPMODEL approach of the original CLSM that uses topography characteristics to model catchment processes is discarded, and a peatland-specific model concept is realized in its place. To facilitate its utilization in operational GEOS efforts, PEAT-CLSM uses the basic structure of CLSM and the same global input data. Parameters used in PEAT-CLSM are based on literature data. A suite of CLSM and PEAT-CLSM simulations for peatland areas between 40°N and 75°N is presented and evaluated against a newly compiled data set of groundwater table depth and eddy covariance observations of latent and sensible heat fluxes in natural and seminatural peatlands. CLSM's simulated groundwater tables are too deep and variable, whereas PEAT-CLSM simulates a mean groundwater table depth of −0.20 m (snow-free unfrozen period) with moderate temporal fluctuations (standard deviation of 0.10 m), in significantly better agreement with in situ observations. Relative to an operational CLSM version that simply includes peat as a soil class, the temporal correlation coefficient is increased on average by 0.16 and reaches 0.64 for bogs and 0.66 for fens when driven with global atmospheric forcing data. In PEAT-CLSM, runoff is increased on average by 38% and evapotranspiration is reduced by 19%. The evapotranspiration reduction constitutes a significant improvement relative to eddy covariance measurements. ©2019. The Authors.
英文关键词	carbon cycle; hydrology; land surface model; microtopography; peatland; wetland
语种	英语
scopus关键词	Catchments; Evapotranspiration; Groundwater; Hydrology; NASA; Peat; Runoff; Surface measurement; Topography; Carbon cycles; Earth system modeling framework; Eddy covariance measurements; Goddard earth observing systems; Groundwater table depth; Land surface modeling; Micro topography; Peatland; Wetlands; atmospheric forcing; carbon cycle; eddy covariance; EOS; evapotranspiration; groundwater resource; hydrological regime; land surface; microtopography; peatland; topography; water table
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156966
作者单位	Department of Earth and Environmental Sciences, KU Leuven, Heverlee, Belgium; Department of Computer Science, KU Leuven, Heverlee, Belgium; Global Modeling and Assimilation Office, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Science Systems and Applications, Inc., Lanham, MD, United States; Department of Physical Geography, Utrecht University, Utrecht, Netherlands; Département des sciences de la Terre et de l'atmosphère-GEOTOP Research Center, Université du Québec à Montréal, Montréal, QC, Canada; Thünen Institute of Climate-Smart Agriculture, Braunschweig, Germany; Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia; Department of Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, Madison, WI, United States; Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada; Institute of Hydrology and Meteorology, Technische Universität Dresden, Tharandt, Germany; Faculty of Civil and Environmental Engineeri...
推荐引用方式 GB/T 7714	Bechtold M.,De Lannoy G.J.M.,Koster R.D.,et al. PEAT-CLSM: A Specific Treatment of Peatland Hydrology in the NASA Catchment Land Surface Model[J],2019,11(7).
APA	Bechtold M..,De Lannoy G.J.M..,Koster R.D..,Reichle R.H..,Mahanama S.P..,...&Tiemeyer B..(2019).PEAT-CLSM: A Specific Treatment of Peatland Hydrology in the NASA Catchment Land Surface Model.Journal of Advances in Modeling Earth Systems,11(7).
MLA	Bechtold M.,et al."PEAT-CLSM: A Specific Treatment of Peatland Hydrology in the NASA Catchment Land Surface Model".Journal of Advances in Modeling Earth Systems 11.7(2019).