ECO1BATT v001

ECOSTRESS Attitude Daily L1B Global 70 m


PI: Simon Hook

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 validation sites. A map of the acquisition coverage can be found 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.

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Characteristics

Collection and Granule

Collection

Characteristic Description
CollectionECOSTRESS
DOI10.5067/ECOSTRESS/ECO1BATT.001
File Size~172 KB
Temporal ResolutionVaries
Temporal Extent2018-07-09 to Present
Spatial ExtentCONUS, key biomes/agricultural zones, selected FLUXNET sites
Coordinate SystemN/A
DatumN/A
File FormatHDF5
Geographic Dimensions400 km x 400 km

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers10
Columns/RowsVaries by scene x Varies by scene
Pixel Size70 m

Layers

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

Product Quality

Quality information for the ECO1BATT Version 1 data product is not provided.

Known Issues

  • 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 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).

Documentation

Using the Data

E-Learning

ECOSTRESS: NASA's Next-Generation Mission to Measure Evapotranspiration from the ISS

Tools

Citation

DOI: 10.5067/ECOSTRESS/ECO1BATT.001

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