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LBA-ECO LC-14 Modeled Soil and Plant Water Balance, Amazon Basin, 1995-2001

Data Set Overview

Data setLBA-ECO LC-14 Modeled Soil and Plant Water Balance, Amazon Basin, 1995-2001
Release date2013-03-01
ProjectLarge Scale Biosphere-Atmosphere
Time Period1995-01-01 to 2001-12-31


A simple GIS soil-water balance model for the Amazon Basin, called RisQue (Risco de Queimadasa -- Fire Risk), was used to conduct an analysis of spatial and temporal patterns of drought in moist tropical forests and the complex relationships between patterns of drought and forest fire regimes from 1995 through 2001. The provided data products are the model output estimates of maximum plant-available soil water (PAWmax) at 10 m depth at 8 km resolution and model data inputs of monthly precipitation and evapotranspiration. RisQue estimates PAWmax at 10 m depth starting with a map of PAWmax (1-2 m depth) developed using 1,565 RADAMBRASIL soil texture profiles and empirical relationships between soil texture and critical soil water parameters and then interpolated to 8 km resolution. In RisQue, plant-available soil water (PAW) is depleted by monthly evapotranspiration estimated using the Penman Monteith equation and satellite-derived radiation and recharged by monthly precipitation. There are three data files with this data set, two *.zip, and one GeoTIFF image (.tif). The *.zip files expand to 83 *.asc files of evapotranspiration and 89 *.asc files for precipitation data. The image (.tif) is a map of maximum percent available water at 10 m depth. All the files in this data set are in standard arc/info asciigrid format at 8 km resolution.


Data set reference document


Nepstad, D.C., P.A. Lefebvre, U.L. Silva, J. Tomasella, P. Schlesinger, L. Solorzano, P.R. Moutinho, and D.G. Ray. 2013. LBA-ECO LC-14 Modeled Soil and Plant Water Balance, Amazon Basin, 1995-2001. ORNL DAAC, Oak Ridge, Tennessee, USA.
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Large Scale Biosphere-Atmosphere : The Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) is an intensive scientific investigation of the tropical rainforest of Brazil and portions of adjacent countries. Like FIFE and BOREAS, this project uses intensive remote-sensing techniques and ground-based experiments to investigate the atmosphere-biosphere-hydrosphere dynamics of this large tropical region. The LBA Project encompasses several scientific disciplines, or components. The LBA-ECO component focuses on the question: "How do tropical forest conversion, regrowth, and selective logging influence carbon storage, nutrient dynamics, trace gas fluxes, and the prospect for sustainable land use in Amazonia?"

Project data set list for Large Scale Biosphere-Atmosphere .

Companion Files

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  • LC14_RISQUE.pdf

Data Files

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Data File (Granule)File SizeDates 1.3 MB 1995-01-01 - 2001-12-31 666.1 KB 1996-01-01 - 2001-12-31
pawmax10m.tif 1.5 MB 2001-01-01 - 2001-12-31

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Files related to this data set have been downloaded on 28 occasions since 2013-03-21, totaling 326 files.