ECOSTRESS status and plans
Abstract
In 2014 the ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) was selected as part of the NASA Earth Ventures Instrument program 2. ECOSTRESS uses critical components from the Prototype HyspIRI Thermal Infrared Radiometer (PHyTIR) developed under the NASA Instrument Incubator Program. These components include the scan mirror and focal plane assembly. ECOSTRESS was delivered to the International Space Station (ISS) on June 29 2018 and operations began shortly thereafter. ECOSTRESS is being used to address critical questions on plant-water dynamics and future ecosystem changes with climate. ECOSTRESS acquires a 53°-wide nadir cross-track swath equivalent to 400 km on the ground at a nominal ISS altitude of 405 km. The telescope is able to view that swath by using a double-sided scan mirror, rotating at a constant 25.4 rpm which also allows the instrument to observe two internal blackbody calibration targets every 1.29 seconds (the two-sided mirror rotating at 25.4 rpm provides 46.6 sweeps per minute). The telescope focuses the optical signal onto a focal plane cooled to 65 K containing a custom 13.2-μm-cutoff mercury-cadmium-telluride (MCT) infrared detector array developed with PHyTIR. Spectral filters on the focal plane define the 5 spectral bands in the 8-12.5 μm range and additional band at 1.6 μm. The calibration targets are two full-aperture temperature-controlled blackbodies held at 293.15 K (20℃) and 319.15 K (46℃). The scanning sequence is hot blackbody, cold blackbody, earth scene, repeating. ECOSTRESS produces a full suite of data products for science studies. These include the radiance at sensor, surface temperature and emissivity, evapotranspiration, water use efficiency and evaporative stress index. ECOSTRESS has acquired data 222 days of data and over 28,000 scenes as of July 25th 2019. This presentation will describe the current status of the ECOSTRESS including the availability of data products and future plans.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMGC51E1103H
- Keywords:
-
- 1632 Land cover change;
- GLOBAL CHANGE;
- 1640 Remote sensing;
- GLOBAL CHANGE;
- 4333 Disaster risk analysis and assessment;
- NATURAL HAZARDS;
- 4217 Coastal processes;
- OCEANOGRAPHY: GENERAL