ECO_L3T_SEB v002

ECOSTRESS Tiled Surface Energy Balance Instantaneous L3 Global 70 m

PI: Simon Hook, Gregory Halverson


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 globally between 52° N and 52° S latitudes. A map of the acquisition coverage can be found in Figure 2 on the ECOSTRESS website.

The ECOSTRESS Tiled Surface Energy Balance Instantaneous L3 Global 70 m (ECO_L3T_SEB) Version 2 data product provides estimated incoming surface radiation (Rg) and net radiation (Rn) aligned with each daytime ECOSTRESS overpass. The Rg was generated using the Forest Light Environmental Simulator (FLiES) radiative transfer model implemented in an artificial neural network using Cloud Optical Thickness (COT) and Aerosol Optical Thickness (AOT) from Goddard Earth Observing System Version 5 (GEOS-5) Forward Processing (FP) along with albedo from ECOSTRESS Tiled Ancillary NDVI and Albedo Level 2 Global 70 m (ECO_L2T_STARS) Version 2 as variables. The Rg output from the FLiES model was bias corrected to Rg from GEOS-FP. The Rn is an output from the Breathing Earth System Simulator (BESS) algorithm. This data product is tiled using a modified version of the Military Grid Reference System (MGRS), which divides Universal Transverse Mercator (UTM) zones into square tiles that are 109.8 km by 109.8 km with a 70 meter (m) spatial resolution.

The ECO_L3T_SEB Version 2 data product is provided in Cloud Optimized GeoTIFF (COG) format with each data layer distributed as a separate COG. This product contains four layers including Rg, Rn, cloud mask, and water mask.

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Collection and Granule


Characteristic Description
File Size~2 MB
Temporal ResolutionVaries
Temporal Extent2018-07-09 to Present
Spatial ExtentGlobal (+/- 52 degrees latitude)
Coordinate SystemUniversal Transverse Mercator (UTM)
DatumWorld Geodetic System (WGS84)
File FormatCloud Optimized GeoTIFF (COG)
Geographic Dimensions109.8 km x 109.8 km


Characteristic Description
Number of Science Dataset (SDS) Layers4
Columns/Rows1568 x 1568
Pixel Size70 m

Layers / Variables

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor
Rg Estimated incoming shortwave radiation W/m² 32-bit floating point NaN N/A N/A N/A
Rn Net radiation W/m² 32-bit floating point NaN N/A 0 to 1 N/A
cloud Cloud mask N/A 8-bit unsigned integer 255 N/A 0, 1 N/A
water Water mask N/A 8-bit unsigned integer 255 N/A 0, 1 N/A

Cloud Mask Values

Class Description
0 Clear
1 Cloudy

Water Mask Values

Class Description
0 Land
1 Water

Product Quality

Quality information for the ECO_L3T_SEB data product is described in Section 5.4 of the Algorithm Theoretical Basis Document (ATBD).

Known Issues

  • Data acquisition gap: ECOSTRESS was launched on June 29, 2018, and moved to autonomous science operations on August 20, 2018, following a successful in-orbit checkout period. On September 29, 2018, ECOSTRESS experienced an anomaly with its primary mass storage unit (MSU). ECOSTRESS has a primary and secondary MSU (A and B). On December 5, 2018, the instrument was switched to the secondary MSU and science operations resumed. On March 14, 2019, the secondary MSU experienced a similar anomaly, temporarily halting science acquisitions. On May 15, 2019, a new data acquisition approach was implemented, and science acquisitions resumed. To optimize the new acquisition approach TIR bands 2, 4, and 5 are being downloaded. The data products are as previously, except the bands not downloaded contain fill values (L1 radiance and L2 emissivity). This approach was implemented from May 15, 2019, through April 28, 2023.

  • Data acquisition gap: From February 8 to February 16, 2020, an ECOSTRESS instrument issue resulted in a data anomaly that created striping in band 4 (10.5 micron). These data products have been reprocessed and are available for download. No ECOSTRESS data were acquired on February 17, 2020, due to the instrument being in SAFEHOLD. Data acquired following the anomaly have not been affected.

  • Data acquisition: ECOSTRESS has now successfully returned to 5-band mode after being in 3-band mode since 2019. This feature was successfully enabled following a Data Processing Unit firmware update (version 4.1) to the payload on April 28, 2023. To better balance contiguous science data scene variables, 3-band collection is currently being interleaved with 5-band acquisitions over the orbital day/night periods.

About the image

ECOSTRESS net radiation (Rn) layers from ECO_L3G_SEB product, acquired over New Mexico, United States, on October 21, 2023.

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User Guide

Algorithm Theoretical Basis Document (ATBD)

Using the Data

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