Terra Instruments


NASA's Terra satellite flew over Typhoon In-fa on Nov. 23 and imagery showed the storm had become elongated to the […]
Mon, Nov 23, 2015
Tropical Storm Annabelle formed early on Nov. 21 in the Southern Indian Ocean, strengthened briefly and began a weakening trend […]
Mon, Nov 23, 2015
Early November 2015 brought cloudy skies and intriguing patterns over the Prince Edward Islands in the South Indian Ocean. The […]
Wed, Nov 18, 2015


Clouds and the Earth’s Radiant Energy System

CERES measures reflected and emitted from the top of Earth's atmosphere.

There are two identical CERES instruments aboard Terra that measure the Earth’s total radiation budget and provide cloud property estimates that enable scientists to assess clouds’ roles in radiative fluxes from the surface to the top of the atmosphere. One CERES instrument operates in a cross-track scan mode and the other in a biaxial scan mode. The cross-track mode essentially continues the measurements of the Earth Radiation Budget Experiment (ERBE) and the Tropical Rainfall Measuring Mission (TRMM), while the biaxial scan mode provides new angular flux information that has improved the accuracy of angular models used to derive the Earth’s radiation balance.

Two CERES sensors also fly aboard Terra’s sister ship—Aqua.

CERES Web Site (Langley Research Center)

CERES in the News