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Land Boundary Conditions for the Goddard Earth Observing System Model Version 5 (GEOS-5) Climate Modeling System: Recent Updates and Data File DescriptionsThe Earths land surface boundary conditions in the Goddard Earth Observing System version 5 (GEOS-5) modeling system were updated using recent high spatial and temporal resolution global data products. The updates include: (i) construction of a global 10-arcsec land-ocean lakes-ice mask; (ii) incorporation of a 10-arcsec Globcover 2009 land cover dataset; (iii) implementation of Level 12 Pfafstetter hydrologic catchments; (iv) use of hybridized SRTM global topography data; (v) construction of the HWSDv1.21-STATSGO2 merged global 30 arc second soil mineral and carbon data in conjunction with a highly-refined soil classification system; (vi) production of diffuse visible and near-infrared 8-day MODIS albedo climatologies at 30-arcsec from the period 2001-2011; and (vii) production of the GEOLAND2 and MODIS merged 8-day LAI climatology at 30-arcsec for GEOS-5. The global data sets were preprocessed and used to construct global raster data files for the software (mkCatchParam) that computes parameters on catchment-tiles for various atmospheric grids. The updates also include a few bug fixes in mkCatchParam, as well as changes (improvements in algorithms, etc.) to mkCatchParam that allow it to produce tile-space parameters efficiently for high resolution AGCM grids. The update process also includes the construction of data files describing the vegetation type fractions, soil background albedo, nitrogen deposition and mean annual 2m air temperature to be used with the future Catchment CN model and the global stream channel network to be used with the future global runoff routing model. This report provides detailed descriptions of the data production process and data file format of each updated data set.
Document ID
20160002967
Document Type
Technical Memorandum (TM)
Authors
Mahanama, Sarith P. (Science Systems and Applications, Inc. Lanham, MD, United States)
Koster, Randal D. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Walker, Gregory K. (Science Systems and Applications, Inc. Lanham, MD, United States)
Takacs, Lawrence L. (Science Systems and Applications, Inc. Lanham, MD, United States)
Reichle, Rolf H. (NASA Goddard Space Flight Center Greenbelt, MD United States)
De Lannoy, Gabrielle (Universities Space Research Association Columbia, MD, United States)
Liu, Qing (Science Systems and Applications, Inc. Lanham, MD, United States)
Zhao, Bin (Science Systems and Applications, Inc. Lanham, MD, United States)
Suarez, Max J. (Universities Space Research Association Greenbelt, MD, United States)
Date Acquired
March 3, 2016
Publication Date
September 1, 2015
Subject Category
Earth Resources and Remote Sensing
Report/Patent Number
GSFC-E-DAA-TN29656
NASA/TM-2015-104606 / Vol. 39
Funding Number(s)
CONTRACT_GRANT: NNG11HP16A
CONTRACT_GRANT: NNG12HP06C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
GEOS-5
GEOLAND2
MODIS

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