DOI: 10.1002/2014MS000330
Scopus记录号: 2-s2.0-85027934308
论文题名: An updated treatment of soil texture and associated hydraulic properties in a global land modeling system
作者: De Lannoy G ; J ; M ; , Koster R ; D ; , Reichle R ; H ; , Mahanama S ; P ; P ; , Liu Q
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 6, 期: 4 起始页码: 957
结束页码: 979
语种: 英语
英文关键词: Catchments
; Moisture
; NASA
; Organic carbon
; Runoff
; Soil moisture
; Surface measurement
; Textures
; Global land surface
; Goddard earth observing systems
; Hydrological simulations
; Land surface modeling
; Pedo-transfer functions
; Soil hydraulic parameters
; Soil moisture active passive (SMAP)
; Soil textures
; Soils
; data set
; database
; EOS
; global climate
; hydraulic property
; hydrological modeling
; land surface
; numerical model
; organic carbon
; soil texture
英文摘要: The advent of new data sets describing soil texture and associated soil properties offers the promise of improved hydrological simulation. Here we describe the composition of a new soil texture data set and its implementation into a specific land surface modeling system, namely, the Catchment land surface model (LSM) of the NASA Goddard Earth Observing System version 5 (GEOS-5) modeling and assimilation framework. First, global soil texture composites are generated using data from the Harmonized World Soil Database version 1.21 (HWSD1.21) and the State Soil Geographic (STATSGO2) project, with explicit consideration of different levels of organic material. Then, the LSM's soil parameters are upgraded using the new texture data, with hydraulic parameters derived for the more extensive set of texture classes using pedotransfer functions. Other changes to the LSM parameters are included to further support simulations at increasingly fine resolutions. A suite of simulations with the original and new parameter versions shows modest yet significant improvements in the Catchment LSM's simulation of soil moisture and surface hydrological fluxes. The revised LSM parameters will be used for the forthcoming Soil Moisture Active Passive (SMAP) soil moisture assimilation product. © 2014. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/76071
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: NASA Goddard Space Flight Center, Greenbelt, MD, United States; Universities Space Research Association, Columbia, MD, United States; Science Systems and Applications, Lanham, MD, United States
Recommended Citation:
De Lannoy G,J,M,et al. An updated treatment of soil texture and associated hydraulic properties in a global land modeling system[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,6(4)