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 validation sites. A map of the acquisition coverage can be found on the ECOSTRESS website
The ECO2LSTE Version 1 data product provides atmospherically corrected land surface temperature and emissivity (LST&E) values derived from five thermal infrared (TIR) bands. The ECO2LSTE data product was derived using a physics-based Temperature/Emissivity Separation (TES) algorithm. The ECO2LSTE is provided as swath data and has a spatial resolution of 70 meters (m). The corresponding ECO1BGEO data product is required to georeference the ECO2LSTE data product.
The ECO2LSTE Version 1 data product contains layers of LST, emissivity for bands 1 through 5, quality control for LST&E, LST error, emissivity error for bands 1 through 5, wideband emissivity, and Precipitable Water Vapor (PWV). For acquisitions after May 15, 2019, data products contain data values for TIR bands 2, 4 and 5 only. TIR bands 1 and 3 contain fill values to accommodate direct streaming of data from the ISS as mentioned in the Known Issues section.
|File Size||~683 MB|
|Temporal Extent||2018-07-09 to Present|
|Spatial Extent||CONUS, key biomes/agricultural zones, selected FLUXNET sites|
|Coordinate System||None (Swath)|
|Geographic Dimensions||400 km x 400 km|
|Number of Science Dataset (SDS) Layers||15|
|Columns/Rows||5400 x 5632|
|Pixel Size||70 m|
|SDS Name||Description||Units||Data Type||Fill Value||No Data Value||Valid Range||Scale Factor||Additional Offset|
|LST||Land Surface Temperature||Kelvin||16-bit unsigned integer||0||N/A||7500 to 65535||0.02||N/A|
|QC||Quality Control for LST and emissivity||N/A||16-bit unsigned integer||N/A||N/A||0 to 65535||N/A||N/A|
|Emis1||Band 1 Emissivity||N/A||8-bit unsigned integer||0||N/A||1 to 255||0.002||0.49|
|Emis2||Band 2 Emissivity||N/A||8-bit unsigned integer||0||N/A||1 to 255||0.002||0.49|
|Emis3||Band 3 Emissivity||N/A||8-bit unsigned integer||0||N/A||1 to 255||0.002||0.49|
|Emis4||Band 4 Emissivity||N/A||8-bit unsigned integer||0||N/A||1 to 255||0.002||0.49|
|Emis5||Band 5 Emissivity||N/A||8-bit unsigned integer||0||N/A||1 to 255||0.002||0.49|
|LST_err||Land Surface Temperature error||Kelvin||8-bit unsigned integer||0||N/A||1 to 255||0.04||N/A|
|Emis1_err||Band 1 Emissivity error||N/A||16-bit unsigned integer||0||N/A||1 to 65535||0.0001||N/A|
|Emis2_err||Band 2 Emissivity error||N/A||16-bit unsigned integer||0||N/A||1 to 65535||0.0001||N/A|
|Emis3_err||Band 3 Emissivity error||N/A||16-bit unsigned integer||0||N/A||1 to 65535||0.0001||N/A|
|Emis4_err||Band 4 Emissivity error||N/A||16-bit unsigned integer||0||N/A||1 to 65535||0.0001||N/A|
|Emis5_err||Band 5 Emissivity error||N/A||16-bit unsigned integer||0||N/A||1 to 65535||0.0001||N/A|
|EmisWB||Wide Band Emissivity||N/A||8-bit unsigned integer||0||N/A||1 to 255||0.002||0.49|
|PWV||Precipitable Water Vapor||cm||16-bit unsigned integer||0||N/A||1 to 65535||0.001||N/A|
Quality information, including the bit definition index for the quality layer, is provided in section 2.4 of the User Guide.
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).
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). This anomaly has affected ECOSTRESS Level 1B and Level 2 datasets, which include the attitude, geolocation, radiance, cloud mask, land surface temperature and emissivity data products. These data products have been removed from data access and are no longer available. Masked data is expected to be available by March 16th, 2020 for all product levels. Data acquired following the anomaly has not been affected.