Terra Instruments

Image from TERRA
Mon, 08 Jul 2019 13:00 EDT

An uprecedented belt of brown algae stretches from West Africa to the Gulf of Mexico—and it’s likely here to stay. Scientists at the University of South Florida in St. Petersburg's College of Marine Science used NASA satellite observations to discover and document the largest bloom of macroalgae in the world, dubbed the Great Atlantic Sargassum Bel

Image from TERRA
Thu, 27 Jun 2019 15:10 EDT

The Shovel Creek and Nugget Creek fires are located northwest and northeast of Fairbanks, respectively.

Image from TERRA
Mon, 10 Jun 2019 09:11 EDT

There are several wildfires burning in Arizona as the wildfire season in the West begins in earnest.

MISR

Multi-angle Imaging SpectroRadiometer

Hurricane Katerina as seen by the MISR sensor

Most satellite instruments look only straight down, or toward the edge of the planet. To fully understand Earth’s climate, and to determine how it may be changing, we need to know the amount of sunlight that is scattered in different directions under natural conditions. MISR is a new type of instrument designed to address this need — it views the Earth with cameras pointed at nine different angles. One camera points toward nadir, and the others provide forward and aftward view angles, at the Earth’s surface, of 26.1°, 45.6°, 60.0°, and 70.5°. As the instrument flies overhead, each region of the Earth’s surface is successively imaged by all nine cameras in each of four wavelengths (blue, green, red, and near-infrared).

In addition to improving our understanding of the fate of sunlight in the Earth’s environment, MISR data can distinguish different types of clouds, aerosol particles, and surfaces. Specifically, MISR will monitor the monthly, seasonal, and long-term trends in:

  • the amount and type of atmospheric aerosol particles, including those formed by natural sources and by human activities;
  • the amount, types, and heights of clouds; and
  • the distribution of land surface cover, including vegetation canopy structure

MISR Web Site (Jet Propulsion Laboratory)

MISR in the News