A gridded global data set of soil, intact regolith, and sedimentary deposit thicknesses for regional and global land surface modeling: GRIDDED GLOBAL DATA SET OF SOIL THICKNESS
Abstract
Abstract 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 regionalmore »
- Authors:
-
- Department of Geosciences, University of Arizona, Tucson Arizona USA
- Department of Atmospheric Sciences, University of Arizona, Tucson Arizona USA
- Department of Hydrology and Water Resources, University of Arizona, Tucson Arizona USA
- National Center for Atmospheric Research, Boulder Colorado USA
- Publication Date:
- Research Org.:
- Univ. of Arizona, Tucson, AZ (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1235593
- Alternate Identifier(s):
- OSTI ID: 1235594; OSTI ID: 1258612
- Grant/Contract Number:
- SC0006773
- Resource Type:
- Published Article
- Journal Name:
- Journal of Advances in Modeling Earth Systems
- Additional Journal Information:
- Journal Name: Journal of Advances in Modeling Earth Systems; Journal ID: ISSN 1942-2466
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES
Citation Formats
Pelletier, Jon D., Broxton, Patrick D., Hazenberg, Pieter, Zeng, Xubin, Troch, Peter A., Niu, Guo-Yue, Williams, Zachary, Brunke, Michael A., and Gochis, David. A gridded global data set of soil, intact regolith, and sedimentary deposit thicknesses for regional and global land surface modeling: GRIDDED GLOBAL DATA SET OF SOIL THICKNESS. United States: N. p., 2016.
Web. doi:10.1002/2015MS000526.
Pelletier, Jon D., Broxton, Patrick D., Hazenberg, Pieter, Zeng, Xubin, Troch, Peter A., Niu, Guo-Yue, Williams, Zachary, Brunke, Michael A., & Gochis, David. A gridded global data set of soil, intact regolith, and sedimentary deposit thicknesses for regional and global land surface modeling: GRIDDED GLOBAL DATA SET OF SOIL THICKNESS. United States. https://doi.org/10.1002/2015MS000526
Pelletier, Jon D., Broxton, Patrick D., Hazenberg, Pieter, Zeng, Xubin, Troch, Peter A., Niu, Guo-Yue, Williams, Zachary, Brunke, Michael A., and Gochis, David. Fri .
"A gridded global data set of soil, intact regolith, and sedimentary deposit thicknesses for regional and global land surface modeling: GRIDDED GLOBAL DATA SET OF SOIL THICKNESS". United States. https://doi.org/10.1002/2015MS000526.
@article{osti_1235593,
title = {A gridded global data set of soil, intact regolith, and sedimentary deposit thicknesses for regional and global land surface modeling: GRIDDED GLOBAL DATA SET OF SOIL THICKNESS},
author = {Pelletier, Jon D. and Broxton, Patrick D. and Hazenberg, Pieter and Zeng, Xubin and Troch, Peter A. and Niu, Guo-Yue and Williams, Zachary and Brunke, Michael A. and Gochis, David},
abstractNote = {Abstract 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.},
doi = {10.1002/2015MS000526},
journal = {Journal of Advances in Modeling Earth Systems},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 22 00:00:00 EST 2016},
month = {Fri Jan 22 00:00:00 EST 2016}
}
https://doi.org/10.1002/2015MS000526
Web of Science
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