Measurement : Cloud fraction

Fraction of sky covered by clouds, observed directly or derived from SW irradiance.

Categories
Cloud Properties

Instruments

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
    • SKYRAD : Sky Radiometers on Stand for Downwelling Radiation
    • TLCV : Time-Lapsed Cloud Video
    • TSI : Total Sky Imager
    • WSI : Whole Sky Imager
  • External Instruments
    • ETA : Eta Model Runs
    • ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses
    • ECMWF : European Centre for Medium Range Weather Forecasts Model Data
    • MOLTS : Model Output Location Time Series
    • NCEPGFS : National Centers for Environment Prediction Global Forecast System
    • NWSSURF : National Weather Service Surface Meteorology Data
  • Field Campaign Instruments
    • AERI-CF : AERI Cloud Fraction
    • CIR : Cloud Infrared Radiometer
    • CONSTRVARANA : Constrained Variational Analysis
    • ETA : Eta Model Runs
    • ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses
    • ECMWF : European Centre for Medium Range Weather Forecasts Model Data
    • HSI : Hemispheric Sky Imager
    • IRSI : Infrared Sky Imager
    • MIRAI : JAMSTEC Research Vessel Mirai
    • LBTM-MINNIS : Minnis Cloud Products Using LBTM Algorithm
    • VISST : Minnis Cloud Products Using Visst Algorithm
    • MSR : Multi-wavelength Scanning Radiometer
    • RONBROWN : NOAA Research Vessel Ron Brown
    • NAWX : NRC Airborne W and X Band Radar
    • NWSSURF : National Weather Service Surface Meteorology Data
    • ISLAND-GUEST-INSTRUMENTS : Nauru Island guest instruments
    • PARSL : PNNL's Atmospheric Remote Sensing Laboratory
    • MMCR94PSU : Penn State 94GHz MMCR
    • RADFLUXANAL : Radiative Flux Analysis
    • SWFLUXANAL : Shortwave Flux Analysis
    • TSI : Total Sky Imager
    • UAV-EGRETT : UAV-Egrett
    • WSI : Whole Sky Imager
    • WFOV-LIVERMORE : Wide Field of View Cameras - Livermore

Value-Added Products

  • SWFLUXANAL : Shortwave Flux Analysis (Process)
    • 15SWFANALBRS1LONG : Short Wave Flux Analysis: 15-min resolution on BRS data, Long algorithm
    • 15SWFANALSKYRAD1LONG : Short Wave Flux Analysis: 15-min resolution on SKYRAD 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
  • WSI : Whole Sky Imager (Process)
    • WSICLOUDSPEC : WSI: stationary (JPEG) images based on spectral retrieval
    • WSICLOUDSUMMARYGIF : WSI: images (GIF) relating to cloud, aerosol summary data
    • WSICLOUDSUMMARY : WSI: cloud and aerosol info, classification summary data
    • WSIFILESUMMARY : WSI: images (GIF) and text representations of data existence
    • WSICLOUDDEN : WSI: stationary (JPEG) images based on optical density retrieval
  • WSICLOUD : Whole Sky Imager Cloud Products (Process)
    • WSICLOUDSUMMARY : WSI: cloud and aerosol info, classification summary data
    • WSICLOUDSPEC : WSI: stationary (JPEG) images based on spectral retrieval
    • WSIFILESUMMARY : WSI: images (GIF) and text representations of data existence
    • WSICLOUDDEN : WSI: stationary (JPEG) images based on optical density retrieval
    • WSICLOUDSUMMARYGIF : WSI: images (GIF) relating to cloud, aerosol summary data

Datastreams

  • ECMWF : European Centre for Medium Range Weather Forecasts Model Data Datastreams
  • ECMWFDIAG : European Centre for Medium Range Weather Forecasts Diagnostic Analyses Datastreams
    • ECMWFVAR : ECMWF: model met. and cloud variables at altitude, entire coverage, 1-hr avg
    • 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
    • ECMWFDARVAR : ECMWF: model met. and cloud variables at altitude, Darwin
  • MOLTS : Model Output Location Time Series Datastreams
    • MOLTSEDASSNDCLASS1 : Model Output Loc. Time Ser. (MOLTS): EDAS meteor. analy., enhances soundings, params, stations
    • 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
  • NCEPGFS : National Centers for Environment Prediction Global Forecast System Datastreams
    • NCEPGFSATKSPROF : NCEP GFS: vertical profiles of met quantities at sigma layers, at Atqasuk
    • NCEPGFSDARSPROF : NCEP GFS: vertical profiles of met quantities at sigma layers, at Darwin
    • NCEPGFSSPROF : NCEP GFS: vertical profiles of met quantities at sigma layers, at SGP/PYE/NIM
    • NCEPGFSMANSPROF : NCEP GFS: vertical profiles of met quantities at sigma layers, at Manus
    • NCEPGFSNAUSPROF : NCEP GFS: vertical profiles of met quantities at sigma layers, at Nauru
    • NCEPGFSBRWSPROF : NCEP GFS: vertical profiles of met quantities at sigma layers, at Barrow
    • NCEPGFSMANZPROF : NCEP GFS: vertical profiles of met quantities at standard heights, at Manus
    • NCEPGFSPPROF : NCEP GFS: vertical profiles of met quantities at standard pressures, at SGP/PYE/NIM
    • NCEPGFSATKPPROF : NCEP GFS: vertical profiles of met quantities at standard pressures, at Atqasuk
    • NCEPGFSZPROF : NCEP GFS: vertical profiles of met quantities at standard heights, at SGP/PYE/NIM
    • NCEPGFSDARPPROF : NCEP GFS: vertical profiles of met quantities at standard pressures, at Darwin
    • NCEPGFSNAUPPROF : NCEP GFS: vertical profiles of met quantities at standard pressures, at Nauru
    • NCEPGFSMANPPROF : NCEP GFS: vertical profiles of met quantities at standard pressures, at Manus
    • NCEPGFSNAUZPROF : NCEP GFS: vertical profiles of met quantities at standard heights, at Nauru
    • NCEPGFSBRWZPROF : NCEP GFS: vertical profiles of met quantities at standard heights, at Barrow
    • NCEPGFSDARZPROF : NCEP GFS: vertical profiles of met quantities at standard heights, at Darwin
    • NCEPGFSATKZPROF : NCEP GFS: vertical profiles of met quantities at standard heights, at Atqasuk
    • NCEPGFSBRWPPROF : NCEP GFS: vertical profiles of met quantities at standard pressures, at Barrow
    • NCEPGFSATKSFC : NCEP GFS: surface variables at Atqasuk
    • NCEPGFSATKFLX : NCEP GFS: flux variables at Atqasuk
    • NCEPGFSFLX : NCEP GFS: flux variables at SGP/PYE/NIM
    • NCEPGFSDARFLX : NCEP GFS: flux variables at Darwin
    • NCEPGFSNAUSFC : NCEP GFS: flux variables at Nauru
    • NCEPGFSMANFLX : NCEP GFS: flux variables at Manus
    • NCEPGFSMANSFC : NCEP GFS: surface variables at Manus
    • NCEPGFSBRWFLX : NCEP GFS: flux variables at Barrow
    • NCEPGFSNAUFLX : NCEP GFS: surface variables at Nauru
    • NCEPGFSDARSFC : NCEP GFS: surface variables at Darwin
    • NCEPGFSBRWSFC : NCEP GFS: surface variables at Barrow
    • NCEPGFSSFC : NCEP GFS: surface variables 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
    • TSISKYIMAGE : Total Sky Imager (TSI): sky image (JPEG)
    • TSIMOVIE : Total Sky Imager (TSI): daily movie generated from 30-sec sky image
    • TSISKYCOVER : Total Sky Imager (TSI): fractional sky coverage
  • WSI : Whole Sky Imager Datastreams
    • 10WSIPARTRADJPG : WSI: stationary calibrated red or clear quicklook images (JPEG), 10 min intervals
    • 02WSIPARTRADJPG : WSI: stationary calibrated red or clear quicklook images (JPEG), 2-min intervals
    • 10WSIPARTRADMPG : WSI: calibrated red or clear quicklook movies (MPEG), 10 min intervals
    • 02WSIPARTRADMPG : WSI: calibrated red or clear quicklook movies (MPEG), 2-min intervals