Overview
| DOI | https://doi.org/10.3334/ORNLDAAC/1978 |
|---|---|
| Version | 1 |
| Project | |
| Published | 2022-03-21 |
| Usage | 305 downloads |
| Citations | 1 publication cited this dataset |
Description
This dataset provides estimates of forest aboveground biomass (AGB; in Mg ha-1) at a resolution of 250 m for the southwestern United States over the time period 2000-2021. The AGB estimates were derived from the Jet Propulsion Laboratory Multiangle Imaging Spectro-Radiometer (MISR) Level 1B2 Terrain radiance data and a multi-angle approach that exploits the relationship between forest AGB and a suite of red band reflectance values modeled at viewing angles with respect to the direction of illumination. The year 2000 National Biomass and Carbon Dataset (NBCD 2000) AGB estimates were used to fit a model coefficient for the MISR-derived AGB estimates for the year 2000, with AGB estimates for all subsequent years dependent on both this coefficient and MISR red band bidirectional reflectance factors (BRFs). Quality assurance (QA) files are also provided that allow users to impose criteria of varying stringency. The bidirectional reflectance distribution function (BRDF) model-fitting root mean square error (RMSE) value was used as one of the criteria to determine if the AGB estimates were reasonable. This dataset is the first example of forest AGB estimation based on a multi-angle index applied using MISR data.
Science Keywords
- BIOSPHERE
- VEGETATION
- BIOMASS
- CRYOSPHERE
- SNOW/ICE
- REFLECTANCE
- BIDIRECTIONAL REFLECTANCE FACTOR
- LAND SURFACE
- SURFACE RADIATIVE PROPERTIES
- REFLECTANCE
- BIOSPHERE
- ECOSYSTEMS
- TERRESTRIAL ECOSYSTEMS
- FORESTS
Data Use and Citation
This dataset is openly shared, without restriction, in accordance with the NASA Earthdata Data Use Guidance.
Data Files
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Companion Files
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Dataset Companion Files
Dataset has 1 companion files.
- MISR_Forest_AGB_SW_US.pdf