Terra Instruments

Image from TERRA
Mon, 23 Mar 2020 09:20 EDT

Agricultural fires, most likely, cropping up in Cuba in March 2020.

Image from TERRA
Tue, 10 Mar 2020 16:51 EDT

A NASA study has found a link between climate change effects on the productivity of grasslands and the growing number of bison in Yellowstone National Park. The data, which came from two NASA Earth science satellites, shows daily vegetation growth for the past 20 years and can be used to help forecast the movements of bison, aiding conservation eff

Image from TERRA
Mon, 03 Feb 2020 10:23 EST

Australia has already been in a fiery situation for months so another fire starting in the Canberra region and spreading so quickly is nothing short of a tragedy for this country.

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