Cloud Cover Measurement Instruments

Measurement Definition: 3D field of fraction of sky filled by clouds - Physical unit [ % ], Accuracy unit [ % ]

Thematic Links
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
ABIOperationalDetects clouds, cloud properties, water vapour, land and sea surface temperatures, dust, aerosols, volcanic ash, fires, total ozone, snow and ice cover, vegetation index.Multi-purpose imaging Vis/IR radiometer
AGRIOperationalA multiple channel radiation imager, one of the primary instruments aboard FY-4. Technically featured by a precisely designed two-mirror structure, capable of accurate and flexible sensing in two dimensions, and minute-level fast sector scanning. Frequent Earth imaging over 14 bands with off-axis three reflections of the primary optic system. On-board black body available for IR calibrations at very short time intervals.Multi-purpose imaging Vis/IR radiometer
AHIOperationalMeasures cloud cover, cloud motion, cloud height, cloud properties, water vapour, rainfalll, sea surface temperatures and Earth radiation, dust, aerosols, volcanic ash, fires, snow and ice cover.Multi-purpose imaging Vis/IR radiometer
AIRSOperationalHigh spectral resolution measurement of temperature and humidity profiles in the atmosphere. Long-wave Earth surface emissivity. Cloud diagnostics. Trace gas profiles. Surface temperatures.Medium-resolution IR spectrometer
AVHRR/3OperationalMeasurements of land and sea surface temperature, cloud cover, snow and ice cover, soil moisture and vegetation indices. Data also used for volcanic eruption monitoring.Multi-purpose imaging Vis/IR radiometer
EPICOperationalDiurnal measurements of ozone, sulfur dioxide, UV surface radiation, clouds, aerosols and vegetation.Multi-purpose imaging Vis/IR radiometer
FCIOperationalMeasurements of cloud cover, cloud top height, precipitation, cloud motion, vegetation, radiation fluxes, convection, air mass analysis, cirrus cloud discrimination, tropopause monitoring, stability monitoring, total ozone and sea surface temperature.Multi-purpose imaging Vis/IR radiometer
IASIOperational
+/-10 %
Measures tropospheric moisture and temperature, column integrated contents of ozone, carbon monoxide, methane, nitrous oxide and other minor gases which affect tropospheric chemistry. Also measures sea surface and land temperature.Medium-resolution IR spectrometer
IKFS-2OperationalAtmospheric temperature/humidity profiles, data on cloud parameters, water vapour & ozone column amounts, surface temperature.n/a
MISROperationalMeasurements of global surface albedo, aerosol and vegetation properties. Also provides multi-angle bidirectional data (1% angle-to-angle accuracy) for cloud cover and reflectances at the surface and aerosol opacities. Global and local modes.n/a
MODISOperationalData on biological and physical processes on the surface of the Earth and in the lower atmosphere, and on global dynamics. Surface temperatures of land and ocean, chlorophyll fluorescence, land cover measurements, cloud cover (day and night).n/a
MSU-GSOperationalMeasurements of cloud cover, cloud top height, precipitation, cloud motion, albedo, vegetation, convection, air mass analysis, tropopause monitoring, stability monitoring, total ozone and surface temperature, fire detection.Multi-purpose imaging Vis/IR radiometer
MSU-GS/VEOperationalOperational metrology, hydrology, climate monitoring and environmental monitoringMulti-purpose imaging Vis/IR radiometer
MVIRSOperationalMeasures surface temperature and cloud and ice cover. Used for snow and flood monitoring and surface temperature.Multi-purpose imaging Vis/IR radiometer
OCIOperationalOcean color slit-grating imaging spectrometer/radiometer for measuring top of atmosphere reflectance which is used to estimate ocean leaving light that contains information on biological components plus aerosol and cloud propertiesln/a
OLCIOperationalMarine and land services.n/a
OLIOperationalMeasures surface radiance, land cover state, and change (e.g., vegetation type). Used as multi-purpose imagery for land applications.n/a
OLI-2OperationalMeasures surface radiance, land cover state, and change (e.g., vegetation type). Used as multi-purpose imagery for land applications.n/a
OLSOperationalDay and night cloud cover imagery.Multi-purpose imaging Vis/IR radiometer
POSPOperationalSensor to map radiometric and polarimetric information of global atmospheric particulate matter specifically PM2.5 and PM10 distributions.Multi-purpose imaging Vis/IR radiometer
SEVIRIOperationalMeasurements of cloud cover, cloud top height, precipitation, cloud motion, vegetation, radiation fluxes, convection, air mass analysis, cirrus cloud discrimination, tropopause monitoring, stability monitoring, total ozone and sea surface temperature.Multi-purpose imaging Vis/IR radiometer
SGLIOperational
+/-15 %
Medium resolution multi-spectral imaging of land, ocean and atmosphere. SGLI-VNR is an optical sensor capable of multi-channel nadir observation at wavelengths from near-UV to NIR and forward or backward polarization observation at red and near infrared wavelengths (Push-broom scanning). SGLI-IRS is an optical sensor capable of multi-channel nadir observation at wavelengths from SWIR to TIR wavelengths (Cross-track scanning).n/a
SounderOperationalAtmospheric soundings and data on atmospheric stability and thermal gradient winds.n/a
TANSO-CAIOperationalDetection and correction of cloud and aerosol for TANSO-FTS.Multi-purpose imaging Vis/IR radiometer
TANSO-CAI-2OperationalDetection and correction of cloud and aerosol for TANSO-FTS, aerosol characteristicsMulti-purpose imaging Vis/IR radiometer
TIRSOperationalMeasures longwave thermal infrared surface emittance, land cover state, and change. Used as multipurpose imagery for land applications.n/a
TIRS-2OperationalMeasures longwave thermal infrared surface emittance, land cover state, and change. Used as multipurpose imagery for land applications. TIRS-2 will adhere to the Landsat 8 TIRS instrument performance specifications but will be built to NASA Class-B instrument standards (including a 5-year design life).n/a
VIIRSOperationalGlobal observations of land, ocean, and atmosphere parameters: cloud/weather imagery, sea-surface temperature, ocean colour, land surface vegetation indices.Multi-purpose imaging Vis/IR radiometer
CLIMBeing developed3-band cloud pushbroom imager for detecting low and high clouds in the spatial sample of CO2I allowing to remove these data from the retrieval process.Multi-purpose imaging Vis/IR radiometer
CPR (EarthCARE)Being developedMeasurement of cloud properties, light precipitation, vertical motion.Cloud and precipitation radar
GXIBeing developedDetects clouds, cloud properties, water vapour, land and sea surface temperatures, dust, aerosols, volcanic ash, fires, total ozone, snow and ice cover, vegetation index.Multi-purpose imaging Vis/IR radiometer
IASI-NGBeing developed
+/-10 %
Measures profiles of atmospheric temperature, humidity, ozone, carbon monoxide, columns of methane, nitrous oxide, and other minor gases, and sea, ice, and land surface temperature and emissivity. Provides information on aeorols and cloud: fractional coverage, phase, cloud top height (input to Polar AMVs) and particle size. Prime applications: NWP, AC/AQ, climate. Secondary applications: NWC, land/ocean surface monitoring. IASI-NG will resume IASI role as internationl standard for satellite inter-calibration (GSICS).Medium-resolution IR spectrometer
IRSBeing developedMeasurements of vertically resolved clear sky atmospheric motion vectors, temperature and water vapour profiles.Medium-resolution IR spectrometer
UVN (Sentinel-4)Being developedSupporting atmospheric composition and air quality monitoring services.n/a
UVNS (Sentinel-5)Being developedSupporting atmospheric composition and air quality monitoring services. Measurements of atmospheric trace gases, primarily O3, NO2, SO2, HCHO, CH4, CO, CHOCHO as well as Aerosols and UV Index.n/a
GHMIApproved Multi-purpose imaging Vis/IR radiometer
IKFS-3ProposedAtmospheric temperature/humidity profiles, data on cloud parameters, water vapour & ozone column amounts, surface temperature.n/a
LandISProposedMeasures surface radiance, land cover state and change (e.g., vegetation type), and longwave termal infrared surface emittance. Used as multi-purpose imagery for land applications.n/a