Collection Overview

MEaSUREs

NASA’s Earth Science Program is dedicated to the advancement of Earth remote sensing and the scientific use of satellite measurements to expand our understanding of Earth systems. The LP DAAC collaborates with the NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) projects to facilitate the introduction of long-term, consistent, high-quality data records to the land remote sensing community.

GFCC

Principal Investigator: John Townshend, University of Maryland

The Global Forest Cover Change (GFCC) collection is derived from enhanced Landsat Global Land Survey (GLS) datasets and provides global coverage information on surface reflectance, water cover, and forest cover change.

GFCC Products Table

GFSAD

Principal Investigator: Prasad Thenkabail, USGS

The Global Food Security-support Analysis Data (GFSAD) collection provides information on global croplands, including crop density and crop extent. The monitoring of global croplands is critical for policymaking and provides important baseline data that are used in many agricultural studies pertaining to water sustainability and food security.

GFSAD Products Table

LSTE

Principal Investigator: Simon Hook, Jet Propulsion Laboratory

The Land Surface Temperature and Emissivity (LSTE) collection provides global LSTE coverage for common use in surface energy balance studies, land surface modeling, climate change modeling, and urban heat island studies.

LSTE Products Table

SRTM

Principal Investigator: Michael Kobrick, Jet Propulsion Laboratory

The NASA Shuttle Radar Topography Mission (SRTM) is a collaborative effort by NASA, the National Geospatial-Intelligence Agency (NGA), and the participation of German and Italian space agencies. This collaboration aims to generate a near-global digital elevation model (DEM) of Earth using radar interferometry. SRTM was the primary (and virtually only) payload on the STS-99 mission of the space shuttle Endeavour, which launched February 11, 2000, and flew for 11 days.

SRTM Products Table

VCF

Principal Investigator: Matthew Hansen, University of Maryland

The Vegetation Continuous Fields (VCF) collection provides global vegetation continuous fields from Advanced Very High Resolution Radiometer (AVHRR) long-term data records version 4 (LTDR v4) from 1982 through 2016. Version 1 of this data product includes a time series of VCF data at 5600 m resolution containing information on percent of tree cover, non-tree vegetation, and bare ground.

VCF Products Table

VIP

Principal Investigator: Kamel Didan, University of Arizona

The Vegetation Index and Phenology (VIP) collection comprises 34 years of a consistent, global record of vegetation indices and landscape phenology. The VIP collections are based on MODIS, AVHRR, and Satellite Pour l'Observation de la Terre (SPOT) data inputs.

VIP Products Table

WELD and GWELD

Principal Investigator: David Roy, Michigan State University; Zhang Hankui, South Dakota State University

The NASA-funded Web-enabled Landsat Data (WELD) project generated Landsat Enhanced Thematic Mapper Plus (ETM+) mosaics of the conterminous United States and Alaska from 2002 to 2012. The WELD products were developed specifically to provide consistent data that could be used to derive land cover, geophysical and biophysical products for regional assessment of surface dynamics, and to study Earth system functionality. The WELD data products were decommissioned on December 2, 2019.

Global WELD (GWELD) is an expansion of WELD data products to a global scale using Landsat 4 and 5 Thematic Mapper (TM) and Landsat 7 Enhanced Thematic Mapper Plus (ETM+) Collection 1 data. These global products provide monthly and annual data for terrestrial non-Antarctic locations for six 3-year epochs that occur every 5 years from 1985 to 2010. GWELD Version 3.1 data for the 2000 and 1990 epochs are available. Additional epochs will be released in the near future.

WELD and GWELD Products Table

FUTURE MEaSUREs

NASADEM

Principal Investigator: Sean Buckley, Jet Propulsion Laboratory

NASADEM is a global digital elevation model (DEM) product produced at the full resolution of the Shuttle Radar Topography Mission (SRTM), 1 arc-second.