Cloud fraction
Measurement Categories: Cloud Properties
Description: Fraction of sky covered by clouds, observed directly or derived from SW irradiance.
Note: Click the "" to expand/collapse the list.
Instruments that produce the measurement
The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes.
- ARM Instruments
- External Instruments
- Eta Model Runs (ETA)
- European Centre for Medium Range Weather Forecasts Diagnostic Analyses (ECMWFDIAG)
- European Centre for Medium Range Weather Forecasts Model Data (ECMWF)
- Model Output Location Time Series (MOLTS)
- National Centers for Environment Prediction Global Forecast System (NCEPGFS)
- National Weather Service Surface Meteorology Data (NWSSURF)
- Field Campaign Instruments
- AERI Cloud Fraction (AERI-CF)
- Cloud Infrared Radiometer (CIR)
- Constrained Variational Analysis (CONSTRVARANA)
- Eta Model Runs (ETA)
- European Centre for Medium Range Weather Forecasts Diagnostic Analyses (ECMWFDIAG)
- European Centre for Medium Range Weather Forecasts Model Data (ECMWF)
- Hemispheric Sky Imager (HSI)
- Infrared Sky Imager (IRSI)
- JAMSTEC Research Vessel Mirai (MIRAI)
- Minnis Cloud Products Using LBTM Algorithm (LBTM-MINNIS)
- Minnis Cloud Products Using Visst Algorithm (VISST)
- Multi-wavelength Scanning Radiometer (MSR)
- NOAA Research Vessel Ron Brown (RONBROWN)
- National Weather Service Surface Meteorology Data (NWSSURF)
- Nauru Island guest instruments (ISLAND-GUEST-INSTRUMENTS)
- PNNL's Atmospheric Remote Sensing Laboratory (PARSL)
- Penn State 94GHz MMCR (MMCR94PSU)
- Radiative Flux Analysis (RADFLUXANAL)
- Shortwave Flux Analysis (SWFLUXANAL)
- Total Sky Imager (TSI)
- UAV-Egrett (UAV-EGRETT)
- Whole Sky Imager (WSI)
- Wide Field of View Cameras - Livermore (WFOV-LIVERMORE)
Value-Added Products (VAPs) including the measurement
- (SWFLUXANAL) Shortwave Flux Analysis Process
- 15swfanalbrs1long - Short Wave Flux Analysis: 15-min resolution on BRS data, Long algorithm
- 15swfanalsiros1long - Short Wave Flux Analysis: 15-min resolution on SIROS data, Long algorithm
- 15swfanalsirs1long - Short Wave Flux Analysis: 15-min resolution on SIRS data, Long algorithm
- 15swfanalskyrad1long - Short Wave Flux Analysis: 15-min resolution on SKYRAD data, Long algorithm
- (WSI) Whole Sky Imager Process
- wsicloudden - WSI: stationary (JPEG) images based on optical density retrieval
- wsicloudspec - WSI: stationary (JPEG) images based on spectral retrieval
- wsicloudsummary - WSI: cloud and aerosol info, classification summary data
- wsicloudsummarygif - WSI: images (GIF) relating to cloud, aerosol summary data
- wsifilesummary - WSI: images (GIF) and text representations of data existence
- (WSICLOUD) Whole Sky Imager Cloud Products Process
- wsicloudden - WSI: stationary (JPEG) images based on optical density retrieval
- wsicloudspec - WSI: stationary (JPEG) images based on spectral retrieval
- wsicloudsummary - WSI: cloud and aerosol info, classification summary data
- wsicloudsummarygif - WSI: images (GIF) relating to cloud, aerosol summary data
- wsifilesummary - WSI: images (GIF) and text representations of data existence
Datastreams including the measurement
- (ECMWF) European Centre for Medium Range Weather Forecasts Model Data Datastreams
- ecmwfdarsupp - ECMWF: supplemental data, Darwin
- ecmwfdarsurf - ECMWF: surface measurement, Darwin
- ecmwfmansupp - ECMWF: supplemental data, Manus
- ecmwfmansurf - ECMWF: surface measurement, Manus
- ecmwfnausupp - ECMWF: supplemental data, Nauru
- ecmwfnausurf - ECMWF: surface measurement, Nauru
- ecmwfsupp - ECMWF: supplemental data, entire coverage
- (ECMWFDIAG) European Centre for Medium Range Weather Forecasts Diagnostic Analyses Datastreams
- ecmwfdarvar - ECMWF: model met. and cloud variables at altitude, Darwin
- ecmwfmanvar - ECMWF: model met. and cloud variables at altitude, Manus, 1-hr avg
- ecmwfnauvar - ECMWF: model met. and cloud variables at altitude, Nauru 1-hr avg
- ecmwfvar - ECMWF: model met. and cloud variables at altitude, entire coverage, 1-hr avg
- (MOLTS) Model Output Location Time Series Datastreams
- moltsedassfcclass0 - Model Output Loc. Time Ser. (MOLTS): EDAS meteor. analy., basic surface, params, stations
- moltsedassfcclass1 - Model Output Loc. Time Ser. (MOLTS): EDAS meteor. analy., enhanced surface, params, stations
- moltsedassndclass1 - Model Output Loc. Time Ser. (MOLTS): EDAS meteor. analy., enhances soundings, params, stations
- (NCEPGFS) National Centers for Environment Prediction Global Forecast System Datastreams
- ncepgfsatkflx - NCEP GFS: flux variables at Atqasuk
- ncepgfsatkpprof - NCEP GFS: vertical profiles of met quantities at standard pressures, at Atqasuk
- ncepgfsatksfc - NCEP GFS: surface variables at Atqasuk
- ncepgfsatksprof - NCEP GFS: vertical profiles of met quantities at sigma layers, at Atqasuk
- ncepgfsatkzprof - NCEP GFS: vertical profiles of met quantities at standard heights, at Atqasuk
- ncepgfsbrwflx - NCEP GFS: flux variables at Barrow
- ncepgfsbrwpprof - NCEP GFS: vertical profiles of met quantities at standard pressures, at Barrow
- ncepgfsbrwsfc - NCEP GFS: surface variables at Barrow
- ncepgfsbrwsprof - NCEP GFS: vertical profiles of met quantities at sigma layers, at Barrow
- ncepgfsbrwzprof - NCEP GFS: vertical profiles of met quantities at standard heights, at Barrow
- ncepgfsdarflx - NCEP GFS: flux variables at Darwin
- ncepgfsdarpprof - NCEP GFS: vertical profiles of met quantities at standard pressures, at Darwin
- ncepgfsdarsfc - NCEP GFS: surface variables at Darwin
- ncepgfsdarsprof - NCEP GFS: vertical profiles of met quantities at sigma layers, at Darwin
- ncepgfsdarzprof - NCEP GFS: vertical profiles of met quantities at standard heights, at Darwin
- ncepgfsflx - NCEP GFS: flux variables at SGP/PYE/NIM
- ncepgfsmanflx - NCEP GFS: flux variables at Manus
- ncepgfsmanpprof - NCEP GFS: vertical profiles of met quantities at standard pressures, at Manus
- ncepgfsmansfc - NCEP GFS: surface variables at Manus
- ncepgfsmansprof - NCEP GFS: vertical profiles of met quantities at sigma layers, at Manus
- ncepgfsmanzprof - NCEP GFS: vertical profiles of met quantities at standard heights, at Manus
- ncepgfsnauflx - NCEP GFS: surface variables at Nauru
- ncepgfsnaupprof - NCEP GFS: vertical profiles of met quantities at standard pressures, at Nauru
- ncepgfsnausfc - NCEP GFS: flux variables at Nauru
- ncepgfsnausprof - NCEP GFS: vertical profiles of met quantities at sigma layers, at Nauru
- ncepgfsnauzprof - NCEP GFS: vertical profiles of met quantities at standard heights, at Nauru
- ncepgfspprof - NCEP GFS: vertical profiles of met quantities at standard pressures, at SGP/PYE/NIM
- ncepgfssfc - NCEP GFS: surface variables at SGP/PYE/NIM
- ncepgfssprof - NCEP GFS: vertical profiles of met quantities at sigma layers, at SGP/PYE/NIM
- ncepgfszprof - NCEP GFS: vertical profiles of met quantities at standard heights, at SGP/PYE/NIM
- (NWSSURF) National Weather Service Surface Meteorology Data Datastreams
- 60nwssurf - National Weather Service (NWS) surface meteorology data: 60-minute averages
- (TLCV) Time-Lapsed Cloud Video Datastreams
- tlcv - Time-lapse cloud video (TLCV): qual. sky images, typ. ea 4-8 sec, Quicktime movies
- (TSI) Total Sky Imager Datastreams
- tsicldmask - Total Sky Imager (TSI): cloud decision images, PNG format
- tsimovie - Total Sky Imager (TSI): daily movie generated from 30-sec sky image
- tsiskycover - Total Sky Imager (TSI): fractional sky coverage
- tsiskyimage - Total Sky Imager (TSI): sky image (JPEG)
- (WSI) Whole Sky Imager Datastreams
- 02wsipartradjpg - WSI: stationary calibrated red or clear quicklook images (JPEG), 2-min intervals
- 02wsipartradmpg - WSI: calibrated red or clear quicklook movies (MPEG), 2-min intervals
- 10wsipartradjpg - WSI: stationary calibrated red or clear quicklook images (JPEG), 10 min intervals
- 10wsipartradmpg - WSI: calibrated red or clear quicklook movies (MPEG), 10 min intervals