DOI: 10.1002/2015MS000526
Scopus记录号: 2-s2.0-84964561170
论文题名: A gridded global data set of soil, intact regolith, and sedimentary deposit thicknesses for regional and global land surface modeling
作者: Pelletier J ; D ; , Broxton P ; D ; , Hazenberg P ; , Zeng X ; , Troch P ; A ; , Niu G ; -Y ; , Williams Z ; , Brunke M ; A ; , Gochis D
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2016
卷: 8, 期: 1 起始页码: 41
结束页码: 65
语种: 英语
英文关键词: Deposits
; Earth (planet)
; Geology
; Groundwater
; Landforms
; Sedimentology
; Soils
; Surface measurement
; Biogeochemical response
; Digital data sets
; Earth system model
; Global land surface
; Groundwater wells
; Lowland landscapes
; Sedimentary deposits
; Subsurface environment
; Climate models
; bedrock
; data set
; global perspective
; groundwater
; hillslope
; land surface
; numerical model
; regional geography
; regolith
; sediment thickness
; soil analysis
; Europe
; United States
英文摘要: Earth's terrestrial near-subsurface environment can be divided into relatively porous layers of soil, intact regolith, and sedimentary deposits above unweathered bedrock. Variations in the thicknesses of these layers control the hydrologic and biogeochemical responses of landscapes. Currently, Earth System Models approximate the thickness of these relatively permeable layers above bedrock as uniform globally, despite the fact that their thicknesses vary systematically with topography, climate, and geology. To meet the need for more realistic input data for models, we developed a high-resolution gridded global data set of the average thicknesses of soil, intact regolith, and sedimentary deposits within each 30 arcsec (∼1 km) pixel using the best available data for topography, climate, and geology as input. Our data set partitions the global land surface into upland hillslope, upland valley bottom, and lowland landscape components and uses models optimized for each landform type to estimate the thicknesses of each subsurface layer. On hillslopes, the data set is calibrated and validated using independent data sets of measured soil thicknesses from the U.S. and Europe and on lowlands using depth to bedrock observations from groundwater wells in the U.S. We anticipate that the data set will prove useful as an input to regional and global hydrological and ecosystems models. © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75926
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Geosciences, University of Arizona, Tucson, AZ, United States; Department of Atmospheric Sciences, University of Arizona, Tucson, AZ, United States; Department of Hydrology and Water Resources, University of Arizona, Tucson, AZ, United States; National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Pelletier J,D,, Broxton P,et al. A gridded global data set of soil, intact regolith, and sedimentary deposit thicknesses for regional and global land surface modeling[J]. Journal of Advances in Modeling Earth Systems,2016-01-01,8(1)