Oak Ridge National Laboratory Distributed Active Archive Center

nasa-ornldaac-1182

LBA-ECO LC-15 Aerodynamic Roughness Maps of Vegetation Canopies, Amazon Basin: 2000

ABSTRACT: 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.

daac.ornl.gov

http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1182

Identified by : LC15_ROUGHNESS_MAP

This dataset was released on January 01, 2013.

The time range for this dataset is February 11, 2000 to February 22, 2000.

The spatial range for this dataset is -23.4268° to 13.8583° latitude, and -82.7208° to -47.0231° longitude. map (center)

This dataset uses data from an instance of the l-band-synthetic-apature-radar instrument on the japanese-earth-resource-satellite platform.
DOI : 10.3334/ORNLDAAC/1182
Also known as :

• dataset oai:mercury-ops2.ornl.gov:ornldaac_1182 (ornl lexicon)
• dataset oai:mercury.ornl.gov:ornldaac_1182 (ornl lexicon)