ECOSTRESS Installation and First Data

ECOSTRESS rode to orbit in the "trunk" of SpaceX's Dragon spacecraft, which berthed at the station on July 2. On July 5, ground controllers at NASA's Johnson Space Center extracted ECOSTRESS from the trunk, robotically transferred it to the International Space Station’s Japanese Experiment Module - Exposed Facility (JEM-EF) and installed it. The ECOSTRESS payload fits within an enclosure measuring 6.1 x 2.6 x 2.9 ft (1.85 x 0.8 x 0.88 m).

In the “first data” image, taken on July 9, yellow and red indicate generally higher surface temperatures. The Nile River is visible as a thin blue line on the main image. The black-and-white inset shows the level of detail available from ECOSTRESS, with the relatively cool Nile River and surrounding vegetation appearing darker.

From the space station’s altitude of ~250 mi (400 km), ECOSTRESS will provide Earth surface temperature data with a spatial resolution of 226 ft (69 m) cross-track and 125 ft (38 m) in-track with a temperature sensitivity of a few tenths of a degree. The station orbits Earth about 16 times a day; and it flies over the same location on Earth approximately every few days at varying times. This orbit provides sufficient coverage for ECOSTRESS to produce data encompassing the complete daily cycle of plant water use.