Overview
| DOI | https://doi.org/10.3334/ORNLDAAC/1182 |
|---|---|
| Version | 1 |
| Project | |
| Published | 2013-08-22 |
| Usage | 1827 downloads |
| Citations | 1 publication cited this dataset |
Description
This data set provides physical roughness maps of vegetation canopies in the Amazon Basin. The images are estimates of aerodynamic roughness length (Z0) and zero plane displacement height (D0) at 1-km spatial resolution. The aerodynamic roughness length (Z0) is an important parameter to determine the vertical gradients of mean wind speed and the conditions for momentum transfer over a vegetated or bare rough surface. The maps were produced from a multivariate regression model algorithm developed from field-measured vegetation structure and remote-sensing data. The data input sources included Shuttle Radar Topography Mission (SRTM) (Saatchi, 2013), JERS-1, MODIS, and field data from vegetation biomass plots over the Amazon basin, as well as tower-based wind profile measurements, and roughness parameters from LBA tower sites. There are two GeoTIFF (.tif) files with this data set.
Science Keywords
- ATMOSPHERE
- ATMOSPHERIC WINDS
- WIND DYNAMICS
- VERTICAL WIND VELOCITY/SPEED
- BIOSPHERE
- VEGETATION
- CANOPY CHARACTERISTICS
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.
- LC15_Roughness_Map.pdf
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