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- The Cloud's and the Earth's Radiant Energy System (CERES) is a 3-channel radiometer measuring reflected solar radiation in the 0.3-5 µm wavelength band, emitted terrestrial radiation in the 8-12 µm band, and total radiation from 0.3 µm to beyond 100 µm. These data are being used to measure the Earth's total thermal radiation budget, and, in combination with MODIS data, detailed information about clouds. The first CERES instrument was launched on the Tropical Rainfall Measuring Mission (TRMM) satellite in November 1997 as CERES-PFM; the second and third CERES instuments were launched on the Terra satellite in December 1999 as CERES-FM1 AND -FM2; and the fourth and fifth CERES instruments are on board the Aqua satellite, as CERES-FM3 and CERES-FM4.
Aqua carries two CERES instruments, the fourth and fifth CERES to fly in space. The TRMM and Terra CERES have obtained levels of accuracy never before achieved for comprehensive Earth radiation-budget measurements. All the CERES instruments have the capability of operating in either of two scanning modes: fixed azimuth plane scanning, where the scan lines are perpendicular to the path of the satellite, and rotating azimuth plane scanning, where the scan lines are at wide range of angles with respect to the satellite's path. The paired CERES on Terra and on Aqua provide both of those missions with the possibility of coincident fixed azimuth plane scanning from one CERES and rotating azimuth plane scanning from the other CERES, enhancing the quality of the final products.
SEE ALSO: CERES-PFM, CERES-FM1, CERES-FM2.
Information obtained from http://ceres.larc.nasa.gov/aqua_ceres.php
Group: Instrument_Details
Entry_ID: CERES-FM4
Group: Instrument_Identification
Instrument_Category: Earth Remote Sensing Instruments
Instrument_Class: Passive Remote Sensing
Instrument_Type: Spectrometers/Radiometers
Instrument_Subtype: Radiometers
Short_Name: CERES-FM4
Long_Name: Clouds and the Earth's Radiant Energy System - Flight Model 4
End_Group
Group: Associated_Platforms
Short_Name: AQUA
End_Group
Group: Spectral_Frequency_Information
Number_Channels: 1
Spectral_Frequency_Coverage_Range: 0.2 μm - 100 μm
End_Group
Group: Spectral_Frequency_Information
Wavelength_Keyword: Infrared > Reflected
Number_Channels: 1
Spectral_Frequency_Coverage_Range: 0.2 μm - 3.5 μm
End_Group
Group: Spectral_Frequency_Information
Wavelength_Keyword: Infrared > Thermal
Number_Channels: 1
Spectral_Frequency_Coverage_Range: 6 μm - 25 μm
End_Group
Online_Resource: http://ceres.larc.nasa.gov/aqua_ceres.php
Online_Resource: http://ceres.larc.nasa.gov/
Sample_Image: http://ceres.larc.nasa.gov/aqua/ceres_inst.jpg
Creation_Date: 2008-07-25
Group: Instrument_Logistics
Instrument_Owner: USA/NASA
End_Group
End_Group
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