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Description
ECO3ETPTJPL Version 1 was deprecated on September 30, 2025. Users are encouraged to use the ECO_L3G_JET and ECO_L3T_JET Version 2 data products.
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 degrees N and 52 degrees S latitudes.
ECO3ETPTJPL Version 1 is a Level 3 (L3) product that provides evapotranspiration (ET) generated from data acquired by the ECOSTRESS radiometer instrument according to the Priestly-Taylor Jet Propulsion Laboratory (PT-JPL) algorithm described in the Algorithm Theoretical Basis Document (ATBD). The ET product is generated from the Level 2 data products for surface temperature and emissivity, the Level 1 geolocation information, and a significant number of ancillary data inputs from other sources. ET is set by various controls, including radiative and atmospheric demand, and environmental sensitivity, productivity, vegetation physiology, and phenology. PT-JPL is best utilized for natural ecosystems. The L3 ET product is used for creating the Level 4 products, Evaporative Stress Index (ESI) and Water Use Efficiency (WUE).
The ECO3ETPTJPL Version 1 data product contains variables of instantaneous ET, daily ET, canopy transpiration, soil evaporation, ET uncertainty, and interception evaporation.
Known Issues
Data acquisition gaps: 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.
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
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Hook, S., & Fisher, J. (2019). ECOSTRESS Evapotranspiration PT-JPL Daily L3 Global 70 m V001 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/ECOSTRESS/ECO3ETPTJPL.001 Date Accessed: 2026-05-05
Hook, Simon, and Joshua Fisher. “ECOSTRESS Evapotranspiration PT-JPL Daily L3 Global 70 m V001.” NASA Land Processes Distributed Active Archive Center, 2019. doi:10.5067/ECOSTRESS/ECO3ETPTJPL.001. Date Accessed: 2026-05-05
Hook, Simon, and Joshua Fisher. ECOSTRESS Evapotranspiration PT-JPL Daily L3 Global 70 m V001. NASA Land Processes Distributed Active Archive Center, 2019, doi:10.5067/ECOSTRESS/ECO3ETPTJPL.001. Date Accessed: 2026-05-05
The file name begins with the Sensor (ECOSTRESS) followed by the Processing Level (L3_ET), Geophysical Parameter (PT-JPL), Orbit Number (26313), Scene Identifier (001), Date and Time of Acquisition designated as YYYYMMDDTHHMMSS (20230225T154024), Build Identifier of product generation software (0601), Product Iteration Number (01), and the Data Format (h5).
Sankey, Temuulen Tsagaan, Kyaw, Thu Ya, Tatum, Julia, Koch, George W., Kolb, Thomas, Lewis, Rayni, Poulos, Helen M., Barton, Andrew M., LaSala, Blase, Thode, Andrea
Jagdhuber, T., Fluhrer, A., Chaparro, D., Dubois, C., Hellwig, F. M., Bayat, B., Montzka, C., Baur, M. J., Ramati, M., Kubert, A., Mueller, M. M., Schellenberg, K., Boehm, M., Jonard, F., Steele-Dunne, S., Piles, M., Entekhabi, D.
Cavender-Bares, Jeannine, Schneider, Fabian D., Santos, Maria Joao, Armstrong, Amanda, Carnaval, Ana, Dahlin, Kyla M., Fatoyinbo, Lola, Hurtt, George C., Schimel, David, Townsend, Philip A., Ustin, Susan L., Wang, Zhihui, Wilson, Adam M.
The table below lists the variables contained within a single granule for this
dataset. Variables often contain observed or derived geophysical measurements
collected from a variety of sources, including remote sensing instruments on
satellite and airborne platforms, field campaigns, in situ measurements, and
model outputs. The terms variable, parameter, scientific data set, layer, and band
have been used across NASA’s Earth science disciplines; however, variable is the
designated nomenclature in NASA’s Common Metadata Repository (CMR).
Variable metadata attributes such as Name, Description, Units, Data Type, Fill
Value, Valid Range, and Scale Factor allow users to efficiently process and analyze
the data. The full range of attributes may not be applicable to all variables.
Additional information on variable attributes is typically available in the data,
user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.