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LBA-ECO LC-15 SRTM30 Digital Elevation Model Data, Amazon Basin: 2000
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Revision Date: August 22, 2013

Summary:

This data set provides a subset of the SRTM30 Digital Elevation Model (DEM) elevation and standard deviation data for the Amazon Basin. SRTM30 is a near-global digital elevation model (DEM) comprising a combination of data from the Shuttle Radar Topography Mission (SRTM), flown in February, 2000, and the earlier U.S. Geological Survey's GTOPO30 data set. The SRTM30 resolution is 30 arc-sec or about 1 km.

In processing the SRTM data, to combine with GTOPO30, the data were resampled from 3 arc-sec to 30 arc-sec. Provided here are the mean elevation and the standard deviation (STD) of the data points used in the averaging. The STD is thus an indication of topographic roughness useful in some applications.

There are two GeoTIFF (.tif) files with this data set. 

Data Citation:

Cite this data set as follows:

Saatchi, S. 2013. LBA-ECO LC-15 SRTM30 Digital Elevation Model Data, Amazon Basin: 2000. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, USA http://dx.doi.org/10.3334/ORNLDAAC/1181

Implementation of the LBA Data and Publication Policy by Data Users:

The LBA Data and Publication Policy [http://daac.ornl.gov/LBA/lba_data_policy.html] is in effect for a period of five (5) years from the date of archiving and should be followed by data users who have obtained LBA data sets from the ORNL DAAC. Users who download LBA data in the five years after data have been archived must contact the investigators who collected the data, per provisions 6 and 7 in the policy.

This data set was archived in August 2013. Users who download the data between August 2013 and July 2018 must comply with the LBA Data and Publication Policy.

Data users should use the investigator contact information in this document to communicate with the data provider.

Data users should use the data set citation and other applicable references provided in this document to acknowledge use of the data.

Table of Contents:

1. Data Set Overview:

Project: LBA-ECO

Activity: Regional Vegetation Variables

LBA Science Component: Land Use and Land Cover

Team ID: LC-15 (Saatchi / Alvala)

The investigator was Saatchi, Dr. Sassan S. You may contact Saatchi, Dr. Sassan S. (sassan.saatchi@jpl.nasa.gov).

LBA Data Set Inventory ID: LC01_SRTM_Topography

This data set provides a subset of the SRTM30 Digital Elevation Model (DEM) elevation and standard deviation data for the Amazon Basin. SRTM30 is a near-global digital elevation model (DEM) comprising a combination of data from the Shuttle Radar Topography Mission (SRTM), flown in February, 2000, and the earlier U.S. Geological Survey's GTOPO30 data set. The SRTM30 resolution is 30 arc-sec or about 1 km.

In processing the SRTM data, to combine with GTOPO30, the data were resampled from 3 arc-sec to 30 arc-sec. Provided here are the mean elevation and the standard deviation (STD) of the data points used in the averaging. The STD is thus an indication of topographic roughness useful in some applications.

Related Data Set:

 LBA-ECO LC-15 Aerodynamic Roughness Maps of Vegetation Canopies, Amazon Basin: 2000 (image analysis for same time period)

2. Data Characteristics:

There are two GeoTIFF files of the entire Amazon basin provided with this data set. The first file is the mean elevtation and the second file is the standard deviation of the averaged elevation.

File #1: SA_srtm_mosaic_30arcsec_reg.hgt.tif

Projection parameters:

Image Statistics

File #2: SA_srtm_mosaic_30arcsec_reg.std.tif

Projection parameters:

Image Statistics

Site boundaries: (All latitude and longitude given in decimal degrees)

Site (Region) Westernmost Longitude Easternmost Longitude Northernmost Latitude Southernmost Latitude Geodetic Datum
Amazon Basin -82.72083 -33.5739013.8583 -21.1277000World Geodetic System, 1984 (WGS-84)

Time period:

Platform/Sensor/Parameters measured include:

3. Data Application and Derivation:

This data set may be used in studies requiring topographic data or the determination of surface water area and elevation.

4. Quality Assessment:

None provided.

5. Data Acquisition Materials and Methods:

Site description:

The Amazon basin is nearly 6,000,000 km2 and is dominated by dense forest. Savannas are found mostly to the north and south of the basin. Deforestation is concentrated along the southern and eastern part of the basin, along highways crossing the region and along the base of the Andes.

Data Acquisition:

This data set provides a subset of the SRTM30 Digital Elevation Model (DEM) elevation and standard deviation data for the Amazon Basin. SRTM30 is a near-global digital elevation model (DEM) comprising a combination of data from the Shuttle Radar Topography Mission (SRTM), flown in February, 2000, and the earlier U.S. Geological Survey's GTOPO30 data set. The SRTM30 resolution is 30 arc-sec or about 1 km.

In processing the SRTM data, to combine with GTOPO30, the data were resampled from 3 arc-sec to 30 arc-sec. Provided here are the mean elevation and the standard deviation (STD) of the data points used in the averaging. The STD is thus an indication of topographic roughness useful in some applications.

Data were retrieved from the authors web site: http://www-radar.jpl.nasa.gov/carbon/ab/srtm.htm

For additional information on the SRTM, please see the following web site: SRTM home_page

6. Data Access:

These data are available through the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).

Data Archive Center:

Contact for Data Center Access Information:
E-mail: uso@daac.ornl.gov
Telephone: +1 (865) 241-3952

7. References:

Saatchi, S. Projects in the Amazon Basin. Retrieved from http://www-radar.jpl.nasa.gov/carbon/ab/srtm.htm. Date accessed 20130816.