Calibration Algorithm Theoretical Basis Document (ATBD)
Geolocation Algorithm Theoretical Basis Document (ATBD)
Product Specification Document (PSD)
Radiance Algorithm Specification Document (ASD)
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 ECO1BATT Version 1 data product provides both corrected and uncorrected attitude quaternions and spacecraft ephemeris data obtained from the ISS. The data are provided in 1 second intervals by the ISS, and each product file contains vectors from the duration of the orbit. The time elements are copied from the ISS raw data.
The ECO1BATT Version 1 data product contains layers of corrected and uncorrected attitude quaternions, spacecraft ephemeris data including Earth-centered inertial (ECI) position and velocity, and associated time elements.
| Characteristic | Description |
|---|---|
| Collection | ECOSTRESS |
| DOI | 10.5067/ECOSTRESS/ECO1BATT.001 |
| File Size | ~172 KB |
| Temporal Resolution | Varies |
| Temporal Extent | 2018-07-09 to Present |
| Spatial Extent | Global (+/- 52 degrees latitude) |
| Coordinate System | N/A |
| Datum | N/A |
| File Format | HDF5 |
| Geographic Dimensions | 400 km x 400 km |
| Characteristic | Description |
|---|---|
| Number of Science Dataset (SDS) Layers | 10 |
| Columns/Rows | Varies by scene x Varies by scene |
| Pixel Size | 70 m |
| SDS Name | Description | Units | Data Type | Fill Value | No Data Value | Valid Range | Scale Factor |
|---|---|---|---|---|---|---|---|
| Attitude quaternion | Corrected attitude quaternion goes from spacecraft to ECI (J2000 Inertial Frame). The coefficient convention used has the real part in the first column. | N/A | 64-bit floating point | N/A | N/A | N/A | N/A |
| Attitude time_j2000 | Time elements for corrected attitude quaternion | Seconds | 64-bit floating point | N/A | N/A | N/A | N/A |
| Ephemeris eci_position | Corrected Ephemeris Earth-centered inertial (ECI) position (J2000 Inertial Frame) | Meters | 64-bit floating point | N/A | N/A | N/A | N/A |
| Ephemeris eci_velocity | Corrected Ephemeris ECI velocity (J2000 Inertial Frame) | m/s | 64-bit floating point | N/A | N/A | N/A | N/A |
| Ephemeris time_j2000 | Time elements for corrected ephemeris data | Seconds | 64-bit floating point | N/A | N/A | N/A | N/A |
| Uncorrected Attitude quaternion | Uncorrected attitude quaternion goes from spacecrasft to ECI (J2000 Inertial Frame). The coefficient convention used has the real part in the first column. This is the reported attitude from the ISS, without correction | N/A | 64-bit floating point | N/A | N/A | N/A | N/A |
| Uncorrected Attitude time_j2000 | Time elements for uncorrected attitude quaternion | Seconds | 64-bit floating point | N/A | N/A | N/A | N/A |
| Uncorrected Ephemeris eci_position | Uncorrected Ephemeris Earth-centered inertial (ECI) position (J2000 Inertial Frame) | Meters | 64-bit floating point | N/A | N/A | N/A | N/A |
| Uncorrected Ephemeris eci_velocity | Uncorrected Ephemeris ECI velocity (J2000 Inertial Frame) | m/s | 64-bit floating point | N/A | N/A | N/A | N/A |
| Uncorrected Ephemeris time_j2000 | Time elements for uncorrected ephemeris data | Seconds | 64-bit floating point | N/A | N/A | N/A | N/A |
Quality information for the ECO1BATT Version 1 data product is not provided.
Cannot perform spatial query on ECO1BATT in NASA Earthdata Search: ECO1BATT does not contain spatial attributes, so granules cannot be searched by geographic location. Users should search for ECO1BATT data products by orbit number instead.
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.