Terra Instruments

Image from TERRA
Tue, 27 Aug 2019 10:00 EDT

Daily U.S. air quality forecasts for particulate matter could potentially be more accurate as the result of incorporating NASA's Earth-observing satellite data, according to a recent study.

Image from TERRA
Tue, 20 Aug 2019 13:24 EDT

A large wildfire on the island of Gran Canaria are causing evacuations of at least 9,000 people.

Image from TERRA
Fri, 02 Aug 2019 14:51 EDT

The Milepost 97 fire which is located about one mile southeast of Canyonville, Oregon was first reported on Wednesday, July 24th at approximately 10:00 p.m.

ASTER

Advanced Spaceborne Thermal Emission and Reflection Radiometer

Image from ASTER

This perspective image of a complex volcanic landscape in the Andean mountain range was assembled from data acquired by ASTER on April 9, 2003. ASTER produces images using infrared, red, and green wavelengths of light. Vegetated areas range in color from red to pink, snow is white, water is black, and bare rock is earth-toned.

The Advanced Spaceborne Thermal Emission and Reflection Radiometer obtains high-resolution (15 to 90 square meters per pixel) images of the Earth in 14 different wavelengths of the electromagnetic spectrum, ranging from visible to thermal infrared light. Scientists use ASTER data to create detailed maps of land surface temperature, emissivity, reflectance, and elevation.

ASTER is the only high spatial resolution instrument on the Terra platform. ASTER’s ability to serve as a ‘zoom’ lens for the other Terra instruments is particularly important for change detection, calibration/validation and land surface studies. Unlike the other instruments aboard Terra, ASTER will not collect data continuously; rather, it collects an average of 8 minutes of data per orbit. All three ASTER telescopes (VNIR, SWIR, and TIR) are pointable in the crosstrack direction. Given its high resolution and its ability to change viewing angles, ASTER produces stereoscopic images and detailed terrain height models.

The ASTER instrument was built in Japan for the Ministry of Economy, Trade and Industry (METI). A joint United States/Japan Science Team is responsible for instrument design, calibration, and data validation.

ASTER Web Site (Jet Propulsion Laboratory)

ASTER in the News