ECOSTRESS Evapotranspiration dis-ALEXI USDA Daily L3 Global 30m V001

Description

The ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) mission measures the temperature of plants to better understand how much water plants need and how they respond to stress. ECOSTRESS is attached to the International Space Station (ISS) and collects data over the conterminous United States (CONUS) as well as key biomes and agricultural zones around the world and selected [FLUXNET](http://fluxnet.fluxdata.org/about/) validation sites. A map of the acquisition coverage can be found on the ECOSTRESS website (https://ecostress.jpl.nasa.gov/science). The United States Department of Agriculture (USDA) ECO3ETALEXIU Version 1 data product provides estimates of daily evapotranspiration (ET) using the ECOSTRESS Level 2 (L2) land surface temperature and emissivity (LST&E) product, along with ancillary meteorological data and remotely sensed vegetation cover information. The ECO3ETALEXIU data product is derived using a physics-based surface energy balance (SEB) algorithm, the Atmosphere Land Exchange Inverse (ALEXI) Disaggregation algorithm (disALEXI). Described in the Algorithm Theoretical Basis Document (ATBD) (https://lpdaac.usgs.gov/documents/332/ECO3ETALEXIU_ATBD_V1.pdf), disALEXI is based on spatial disaggregation of regional-scale fluxes from the ALEXI SEB model. Many approaches exist for mapping ET spatially; however, SEB methods are favored for remote sensing retrievals based on land-surface temperature. ALEXI was initially developed for managed landscapes. Applications include crop water use, crop phenology monitoring, and drought early warning or water stress detection. The output ET is generated on a UTM grid at a spatial resolution of 30 meters. The ECO3ETALEXIU Version 1 data product contains layers of daily ET, ET uncertainty, and associated quality flags. A low-resolution browse is also available showing daily ET as a stretched image with a color ramp in JPEG format.

Resources

Name Format Description Link
21 LP DAAC Data Pool provides direct access to available products via HTTPS. https://e4ftl01.cr.usgs.gov/ECOSTRESS/ECO3ETALEXIU.001/
21 Digital Object Identifier https://doi.org/10.5067/ECOSTRESS/ECO3ETALEXIU.001
33 The technical information in the User's Guide enables users to interpret and use the data products. https://lpdaac.usgs.gov/documents/331/ECO3ETALEXIU_User_Guide_V1.pdf
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2FECOSTRESS%2FECO3ETALEXIU.001
21 Browse image for Earthdata Search https://e4ftl01.cr.usgs.gov//WORKING/BRWS/Browse.001/2019.07.25/ECOSTRESS_L3_ET_ALEXI_USDA_00731_008_20180822T201811_0503_03.mead.1.jpg?_ga=2.229793116.1575605641.1565613093-1371303444.1563801461
21 The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products. https://lpdaac.usgs.gov/
33 The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products. https://lpdaac.usgs.gov/documents/332/ECO3ETALEXIU_ATBD_V1.pdf
21 Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data. https://search.earthdata.nasa.gov/search?q=C1534730413-LPDAAC_ECS
33 The Product Specification Document (PSD) describes the format and contents of the ECO3ETALEXIU product. https://lpdaac.usgs.gov/documents/333/ECO3ETALEXIU_PSD_V1.pdf
33 The Earthdata Search Quick Guide explains how to search ECOSTRESS data in NASA Earthdata Search. https://lpdaac.usgs.gov/documents/227/ECO_Earthdata_Search_Quick_Guide.pdf

Tags

  • atmospheric-water-vapor
  • atmosphere
  • earth-science

Topics

Categories