Terra Instruments

Elevated CO2 concentrations in the atmosphere may increase water use efficiency in grain crops while mitigating yield losses due to […]
Tue, Apr 26, 2016
Scientists used NASA satellite data to study cloud cover, which they found can help identify animal and plant habitats. […]
Thu, Apr 14, 2016
Beginning today, all Earth imagery from a prolific Japanese remote sensing instrument on NASA’s Terra spacecraft since 1999 is now […]
Fri, Apr 01, 2016


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