CERES stands for Clouds and Earth's Radiation Energy System. CERES products include both solar-reflected and Earth-emitted radiation from the top of the atmosphere (TOA) to the Earth's surface. Cloud properties are determined using simultaneous measurements by other EOS and NPP instruments such as the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Visible and Infrared Sounder (VIRS).
CERES sensors are aboard TERRA and AQUA Earth Observation Satellite (EOS) satellites. These are 3-channel instruments with a shortwave: 0.3 - 5.0 µm, a longwave: 8 - 12 µm, and a so-called total: 0.3 to > 100 µm channel.
CERES TOA products are measured products, taking into account the solar radiation incident at the TOA. CERES surface products are a combination of CERES measured fluxes and atmospheric profiles (GEOS-5.4.1), NCEP SMOBA Ozone, MATCH aerosols and cloud cover properties derived from MODIS Collection 5 until March 2017.
Upwelling fluxes are defined positive, downwelling fluxes are defined negative. Products are available for all-sky and clear-sky conditions. Clear-sky conditions are defined as a 99% cloud-free CERES footprint (about 20 km resolution) using the CERES-MODIS clear-sky mask.
More information about the sensors and the data sets can be found on the CERES webpage and in the references section.
This is Version Ed4.0 (Surface) and Ed4.0 (TOA) of the CERES-EBAF Products, first downloaded August 29 2017. This version has several improvements compared to version 2.8, most importantly the usage of advanced and more consistent input data (see references).
Also included are data of the cloud radiative effect as well as the TOA incoming solar flux and, since version 4.0 also a few MODIS cloud parameters.
Last update of this data set at ICDC: December 14, 2018.