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 data       graph     public Extended AVHRR Polar Pathfinder Fundamental Climate Data Record (APPx CDR) [Time][columns][
rows]
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noaa_ngdc_0fe5_a4b9_3776

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL cdm_data_type String Grid
attribute NC_GLOBAL cdr_program String NOAA Climate Data Record Program for satellites
attribute NC_GLOBAL cdr_variable String cdr_surface_temperature, cdr_surface_albedo, cdr_surface_downwelling_shortwave_flux, cdr_surface_downwelling_longwave_flux, cdr_surface_upwelling_shortwave_flux, cdr_surface_upwelling_longwave_flux, cdr_cloud_binary_mask, cdr_sea_ice_thickness, cdr_toa_net_downward_shortwave_flux, cdr_toa_outgoing_shortwave_flux, cdr_toa_outgoing_longwave_flux,surface_type, cloud_particle_phase, cloud_particle_radius, cloud_optical_depth, cloud_top_pressure, cloud_top_temperature, Cloud_type, surface_shortwave_cloud_radiative_forcing, surface_longwave_cloud_radiative_forcing
attribute NC_GLOBAL Conventions String CF-1.6, ACDD-1.3, NOAA CDR v1.0, GDS v2.0, COARDS
attribute NC_GLOBAL creator_email String ngdc.info at noaa.gov
attribute NC_GLOBAL creator_name String Cooperative Institute for Meteorological Studies, University of Wisconsin at Madison
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.ngdc.noaa.gov/ (external link)
attribute NC_GLOBAL date_created String 2016-08-01
attribute NC_GLOBAL history String individual twice daily APP-x data
attribute NC_GLOBAL id String arctic/Polar-APP-X_v01r01_Nhem_1400_d20160801_c20160803.nchttps://www.ngdc.noaa.gov/thredds/dodsC/arctic/Polar-APP-X_v01r01_Nhem_1400_d20160801_c20160803.nc
attribute NC_GLOBAL infoUrl String https://www.ngdc.noaa.gov/thredds/dodsC/arctic/Polar-APP-X_v01r01_Nhem_1400_d20160801_c20160803.nc.html (external link)
attribute NC_GLOBAL institution String Cooperative Institute for Meteorological Studies, University of Wisconsin at Madison
attribute NC_GLOBAL keywords String advanced, air, air_pressure, albedo, appx, atmosphere, atmospheric, avhrr, broadband, budget, cdr, cdr_cloud_binary_mask, cdr_sea_ice_thickness, cdr_surface_albedo, cdr_surface_downwelling_longwave_flux, cdr_surface_downwelling_shortwave_flux, cdr_surface_temperature, cdr_surface_upwelling_longwave_flux, cdr_surface_upwelling_shortwave_flux, cdr_toa_net_downward_shortwave_flux, cdr_toa_outgoing_longwave_flux, cdr_toa_outgoing_shortwave_flux, climate, cloud, cloud cover, cloud_optical_depth, cloud_particle_phase, cloud_particle_radius, cloud_top_pressure, cloud_top_temperature, cloud_type, cloudiness, clouds, columns, concentration, cooperative, cover, cryosphere, cryospheric, data, depth, distribution, downward, downwelling, droplet, earth, Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements, Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure, Earth Science > Atmosphere > Atmospheric Pressure > Static Pressure, Earth Science > Atmosphere > Atmospheric Radiation > Albedo, Earth Science > Atmosphere > Atmospheric Radiation > Longwave Radiation, Earth Science > Atmosphere > Atmospheric Radiation > Radiative Flux, Earth Science > Atmosphere > Atmospheric Radiation > Shortwave Radiation, Earth Science > Atmosphere > Atmospheric Radiation > Solar Radiation, Earth Science > Atmosphere > Clouds > Cloud Microphysics > Cloud Droplet Concentration(Size), Earth Science > Atmosphere > Clouds > Cloud Microphysics > Cloud Droplet Phase, Earth Science > Atmosphere > Clouds > Cloud Microphysics > Cloud Optical Depth(Thickness), Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Fraction, Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Top Pressure, Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Top Temperature, Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Type, Earth Science > Atmosphere > Clouds > Cloud Radiative Transfer > Cloud Radiative Forcing, Earth Science > Climate Indicators > Cryospheric Indicators > Ice Depth(Thickness), Earth Science > Cryosphere > Sea Ice > Ice Depth(Thickness), Earth Science > Cryosphere > Sea Ice > Ice Depth/Thickness, Earth Science > Cryosphere > Snow And Ice > Albedo, Earth Science > Cryosphere > Snow And Ice > Snow And Ice Temperature, Earth Science > Land Surface > Land Albedo, Earth Science > Land Surface > Land Temperature, Earth Science > Land Surface > Land Temperature > Land Surface Temperature, Earth Science > Oceans > Ocean Heat Budget > Longwave Radiation, Earth Science > Oceans > Ocean Optics > Water-Leaving Radiance, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Sea Ice > Ice Depth(Thickness), Earth Science > Oceans > Sea Ice > Ice Depth/Thickness, Earth Science > Terrestrial Hydrosphere > Snow And Ice > Albedo, Earth Science > Terrestrial Hydrosphere > Snow And Ice > Ice Depth(Thickness), extended, flux, forcing, fraction, fundamental, heat, heat flux, high, hydrosphere, ice, ice distribution, identifier, indicators, institute, land, leaving, level, longwave, madison, mask, measurements, meteorological, meteorology, microphysics, net, noaa, ocean, oceans, optical, optical properties, optics, outgoing, particle, pathfinder, phase, polar, pressure, properties, radiance, radiation, radiative, radiometer, radius, record, resolution, rows, science, sea, sea_ice_thickness, seawater, shortwave, size, skin, snow, solar, static, studies, surface, surface_albedo, surface_downwelling_longwave_flux, surface_downwelling_shortwave_flux, surface_longwave_cloud_radiative_forcing, surface_shortwave_cloud_radiative_forcing, surface_temperature, surface_type, surface_upwelling_longwave_flux, surface_upwelling_shortwave_flux, temperature, terrestrial, thickness, time2, toa, toa_net_downward_shortwave_flux, toa_outgoing_longwave_flux, toa_outgoing_shortwave_flux, top, transfer, type, university, upwelling, very, vhrr, water, water-leaving, wisconsin
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String No restrictions on access or use
attribute NC_GLOBAL metadata_link String C00941
attribute NC_GLOBAL nameing_authority String gov.noaa.ncdc
attribute NC_GLOBAL platform String NOAA polar orbiting satellite 19
attribute NC_GLOBAL product_version String V2.0
attribute NC_GLOBAL sensor String Advanced Very High Resolution Radiometer/3
attribute NC_GLOBAL source String individual twice daily APP-x data
attribute NC_GLOBAL sourceUrl String https://www.ngdc.noaa.gov/thredds/dodsC/arctic/Polar-APP-X_v01r01_Nhem_1400_d20160801_c20160803.nc (external link)
attribute NC_GLOBAL spatial_resolution String 25 km
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String The Extended Advanced Very High Resolution Radiometer (AVHRR) Polar Pathfinder (APP-x) version-2 Thematic Climate Data Record (CDR) includes surface temperature, surface albedo, surface and the Top Of the Atmosphere (TOA) shortwave and longwave radiative fluxes, cloud properties (amount, phase, particle size, optical depth,top pressure and temperature, surface and TOA radiative effect), and ice thickness and age. The APP-x CDR has twice daily data at local solar times of 14 and 04(02) for the Arctic(Antarctic) at a spatial resolution of 25 km for both poles.
attribute NC_GLOBAL title String Extended AVHRR Polar Pathfinder Fundamental Climate Data Record (APPx CDR) [Time][columns][rows]
dimension time2   int nValues=1, onlyValue=0.0
attribute time2 actual_range int 0, 0
attribute time2 ioos_category String Time
attribute time2 long_name String Time
attribute time2 units String count
dimension columns   short nValues=361, evenlySpaced=true, averageSpacing=1.0
attribute columns actual_range short 0, 360
attribute columns ioos_category String Unknown
attribute columns long_name String Columns
attribute columns units String count
dimension rows   short nValues=361, evenlySpaced=true, averageSpacing=1.0
attribute rows actual_range short 0, 360
attribute rows ioos_category String Unknown
attribute rows long_name String Rows
attribute rows units String count
variable cdr_surface_temperature   float time2, columns, rows
attribute cdr_surface_temperature _FillValue float 9999.0
attribute cdr_surface_temperature colorBarMaximum double 313.0
attribute cdr_surface_temperature colorBarMinimum double 263.0
attribute cdr_surface_temperature grid_mapping String crs
attribute cdr_surface_temperature ioos_category String Temperature
attribute cdr_surface_temperature long_name String NOAA CDR of surface skin temperature
attribute cdr_surface_temperature standard_name String surface_temperature
attribute cdr_surface_temperature units String K
attribute cdr_surface_temperature valid_range float 0.0, 1000.0
variable cdr_surface_albedo   float time2, columns, rows
attribute cdr_surface_albedo _FillValue float 9999.0
attribute cdr_surface_albedo colorBarMaximum double 1.5
attribute cdr_surface_albedo colorBarMinimum double 0.0
attribute cdr_surface_albedo grid_mapping String crs
attribute cdr_surface_albedo ioos_category String Optical Properties
attribute cdr_surface_albedo long_name String NOAA CDR of surface broadband albedo
attribute cdr_surface_albedo standard_name String surface_albedo
attribute cdr_surface_albedo units String 1
attribute cdr_surface_albedo valid_range float 0.0, 1.0
variable cdr_surface_downwelling_shortwave_flux   float time2, columns, rows
attribute cdr_surface_downwelling_shortwave_flux _FillValue float 9999.0
attribute cdr_surface_downwelling_shortwave_flux colorBarMaximum double 500.0
attribute cdr_surface_downwelling_shortwave_flux colorBarMinimum double -500.0
attribute cdr_surface_downwelling_shortwave_flux grid_mapping String crs
attribute cdr_surface_downwelling_shortwave_flux ioos_category String Heat Flux
attribute cdr_surface_downwelling_shortwave_flux long_name String NOAA CDR of surface downwelling shortwave radiative flux
attribute cdr_surface_downwelling_shortwave_flux standard_name String surface_downwelling_shortwave_flux
attribute cdr_surface_downwelling_shortwave_flux units String W m-2
attribute cdr_surface_downwelling_shortwave_flux valid_range float 0.0, 1800.0
variable cdr_surface_downwelling_longwave_flux   float time2, columns, rows
attribute cdr_surface_downwelling_longwave_flux _FillValue float 9999.0
attribute cdr_surface_downwelling_longwave_flux colorBarMaximum double 500.0
attribute cdr_surface_downwelling_longwave_flux colorBarMinimum double -500.0
attribute cdr_surface_downwelling_longwave_flux grid_mapping String crs
attribute cdr_surface_downwelling_longwave_flux ioos_category String Heat Flux
attribute cdr_surface_downwelling_longwave_flux long_name String NOAA CDR of surface downwelling longwave radiative flux
attribute cdr_surface_downwelling_longwave_flux standard_name String surface_downwelling_longwave_flux
attribute cdr_surface_downwelling_longwave_flux units String W m-2
attribute cdr_surface_downwelling_longwave_flux valid_range float 0.0, 1800.0
variable cdr_surface_upwelling_shortwave_flux   float time2, columns, rows
attribute cdr_surface_upwelling_shortwave_flux _FillValue float 9999.0
attribute cdr_surface_upwelling_shortwave_flux colorBarMaximum double 500.0
attribute cdr_surface_upwelling_shortwave_flux colorBarMinimum double -500.0
attribute cdr_surface_upwelling_shortwave_flux grid_mapping String crs
attribute cdr_surface_upwelling_shortwave_flux ioos_category String Heat Flux
attribute cdr_surface_upwelling_shortwave_flux long_name String NOAA CDR of surface upwelling shortwave radiative flux
attribute cdr_surface_upwelling_shortwave_flux standard_name String surface_upwelling_shortwave_flux
attribute cdr_surface_upwelling_shortwave_flux units String W m-2
attribute cdr_surface_upwelling_shortwave_flux valid_range float 0.0, 1800.0
variable cdr_surface_upwelling_longwave_flux   float time2, columns, rows
attribute cdr_surface_upwelling_longwave_flux _FillValue float 9999.0
attribute cdr_surface_upwelling_longwave_flux colorBarMaximum double 500.0
attribute cdr_surface_upwelling_longwave_flux colorBarMinimum double -500.0
attribute cdr_surface_upwelling_longwave_flux grid_mapping String crs
attribute cdr_surface_upwelling_longwave_flux ioos_category String Heat Flux
attribute cdr_surface_upwelling_longwave_flux long_name String NOAA CDR of surface upwelling longwave radiative flux
attribute cdr_surface_upwelling_longwave_flux standard_name String surface_upwelling_longwave_flux
attribute cdr_surface_upwelling_longwave_flux units String W m-2
attribute cdr_surface_upwelling_longwave_flux valid_range float 0.0, 1800.0
variable cdr_cloud_binary_mask   short time2, columns, rows
attribute cdr_cloud_binary_mask _FillValue short 199
attribute cdr_cloud_binary_mask colorBarMaximum double 1.5
attribute cdr_cloud_binary_mask colorBarMinimum double 0.0
attribute cdr_cloud_binary_mask flag_meanings String clear cloudy
attribute cdr_cloud_binary_mask flag_values short 0, 1
attribute cdr_cloud_binary_mask grid_mapping String crs
attribute cdr_cloud_binary_mask ioos_category String Identifier
attribute cdr_cloud_binary_mask long_name String NOAA CDR of cloud mask
attribute cdr_cloud_binary_mask units String 1
attribute cdr_cloud_binary_mask valid_range short 0, 1
variable cdr_sea_ice_thickness   float time2, columns, rows
attribute cdr_sea_ice_thickness _FillValue float 9999.0
attribute cdr_sea_ice_thickness colorBarMaximum double 2.5
attribute cdr_sea_ice_thickness colorBarMinimum double 0.0
attribute cdr_sea_ice_thickness grid_mapping String crs
attribute cdr_sea_ice_thickness ioos_category String Ice Distribution
attribute cdr_sea_ice_thickness long_name String NOAA CDR of sea ice thickness
attribute cdr_sea_ice_thickness standard_name String sea_ice_thickness
attribute cdr_sea_ice_thickness units String m
attribute cdr_sea_ice_thickness valid_range float 0.0, 10.0
variable cdr_toa_net_downward_shortwave_flux   float time2, columns, rows
attribute cdr_toa_net_downward_shortwave_flux _FillValue float 9999.0
attribute cdr_toa_net_downward_shortwave_flux colorBarMaximum double 500.0
attribute cdr_toa_net_downward_shortwave_flux colorBarMinimum double -500.0
attribute cdr_toa_net_downward_shortwave_flux grid_mapping String crs
attribute cdr_toa_net_downward_shortwave_flux ioos_category String Heat Flux
attribute cdr_toa_net_downward_shortwave_flux long_name String NOAA CDR of TOA net downward shortwave radiative flux
attribute cdr_toa_net_downward_shortwave_flux standard_name String toa_net_downward_shortwave_flux
attribute cdr_toa_net_downward_shortwave_flux units String W m-2
attribute cdr_toa_net_downward_shortwave_flux valid_range float 0.0, 1800.0
variable cdr_toa_outgoing_shortwave_flux   float time2, columns, rows
attribute cdr_toa_outgoing_shortwave_flux _FillValue float 9999.0
attribute cdr_toa_outgoing_shortwave_flux colorBarMaximum double 500.0
attribute cdr_toa_outgoing_shortwave_flux colorBarMinimum double -500.0
attribute cdr_toa_outgoing_shortwave_flux grid_mapping String crs
attribute cdr_toa_outgoing_shortwave_flux ioos_category String Heat Flux
attribute cdr_toa_outgoing_shortwave_flux long_name String NOAA CDR of TOA outgoing shortwave radiative flux
attribute cdr_toa_outgoing_shortwave_flux standard_name String toa_outgoing_shortwave_flux
attribute cdr_toa_outgoing_shortwave_flux units String W m-2
attribute cdr_toa_outgoing_shortwave_flux valid_range float 0.0, 1800.0
variable cdr_toa_outgoing_longwave_flux   float time2, columns, rows
attribute cdr_toa_outgoing_longwave_flux _FillValue float 9999.0
attribute cdr_toa_outgoing_longwave_flux colorBarMaximum double 500.0
attribute cdr_toa_outgoing_longwave_flux colorBarMinimum double -500.0
attribute cdr_toa_outgoing_longwave_flux grid_mapping String crs
attribute cdr_toa_outgoing_longwave_flux ioos_category String Heat Flux
attribute cdr_toa_outgoing_longwave_flux long_name String NOAA CDR of TOA outgoing longwave radiative flux
attribute cdr_toa_outgoing_longwave_flux standard_name String toa_outgoing_longwave_flux
attribute cdr_toa_outgoing_longwave_flux units String W m-2
attribute cdr_toa_outgoing_longwave_flux valid_range float 0.0, 1800.0
variable surface_type   short time2, columns, rows
attribute surface_type _FillValue short 255
attribute surface_type colorBarMaximum double 300.0
attribute surface_type colorBarMinimum double 0.0
attribute surface_type flag_meanings String not_land ice snow land
attribute surface_type flag_values short 0, 3, 4, 254
attribute surface_type grid_mapping String crs
attribute surface_type ioos_category String Unknown
attribute surface_type long_name String surface type
attribute surface_type units String 1
attribute surface_type valid_range short 0, 254
variable cloud_particle_phase   short time2, columns, rows
attribute cloud_particle_phase _FillValue short 199
attribute cloud_particle_phase colorBarMaximum double 1.5
attribute cloud_particle_phase colorBarMinimum double 0.0
attribute cloud_particle_phase flag_meanings String liquid solid
attribute cloud_particle_phase flag_values short 0, 1
attribute cloud_particle_phase grid_mapping String crs
attribute cloud_particle_phase ioos_category String Meteorology
attribute cloud_particle_phase long_name String cloud particle phase
attribute cloud_particle_phase units String 1
attribute cloud_particle_phase valid_range short 0, 1
variable cloud_particle_radius   float time2, columns, rows
attribute cloud_particle_radius _FillValue float 9999.0
attribute cloud_particle_radius colorBarMaximum double 400.0
attribute cloud_particle_radius colorBarMinimum double 0.0
attribute cloud_particle_radius grid_mapping String crs
attribute cloud_particle_radius ioos_category String Meteorology
attribute cloud_particle_radius long_name String cloud particle radius
attribute cloud_particle_radius units String microns
attribute cloud_particle_radius valid_range float 0.0, 300.0
variable cloud_optical_depth   float time2, columns, rows
attribute cloud_optical_depth _FillValue float 9999.0
attribute cloud_optical_depth colorBarMaximum double 400.0
attribute cloud_optical_depth colorBarMinimum double 0.0
attribute cloud_optical_depth grid_mapping String crs
attribute cloud_optical_depth ioos_category String Meteorology
attribute cloud_optical_depth long_name String cloud optical depth
attribute cloud_optical_depth units String 1
attribute cloud_optical_depth valid_range float 0.0, 300.0
variable cloud_top_pressure   float time2, columns, rows
attribute cloud_top_pressure _FillValue float 9999.0
attribute cloud_top_pressure colorBarMaximum double 1050.0
attribute cloud_top_pressure colorBarMinimum double 950.0
attribute cloud_top_pressure grid_mapping String crs
attribute cloud_top_pressure ioos_category String Meteorology
attribute cloud_top_pressure long_name String cloud top pressure
attribute cloud_top_pressure standard_name String air_pressure
attribute cloud_top_pressure units String hPa
attribute cloud_top_pressure valid_range float 0.0, 1000.0
variable cloud_top_temperature   float time2, columns, rows
attribute cloud_top_temperature _FillValue float 9999.0
attribute cloud_top_temperature colorBarMaximum double 313.0
attribute cloud_top_temperature colorBarMinimum double 263.0
attribute cloud_top_temperature grid_mapping String crs
attribute cloud_top_temperature ioos_category String Temperature
attribute cloud_top_temperature long_name String cloud top temperature
attribute cloud_top_temperature units String K
attribute cloud_top_temperature valid_range float 0.0, 1000.0
variable cloud_type   short time2, columns, rows
attribute cloud_type _FillValue short 199
attribute cloud_type colorBarMaximum double 100.0
attribute cloud_type colorBarMinimum double 0.0
attribute cloud_type grid_mapping String crs
attribute cloud_type ioos_category String Meteorology
attribute cloud_type long_name String cloud type
attribute cloud_type meanings String Cloud type value has two digits, i.e. XX, the ones place X (the first X from left), representing cloud type from CASPR algorithm, and the tenth place X representing cloud type from CLAVR algorithm. For CLAVR algorithm the tenth place X meanings: 0=clear or partly cloudy,1=fogs,2=liquid,3=mixed phase,4=glaciated,5=cirrus6=cirrus over lower,7=unused,8=unused,9=missing. For CASPR algorithm the ones place X meanings: 0=clear,1=cirrus,2=low stratus,3=warm,4=cold,5=water6=ice,7=Polar stratospheric cloud (PSC),8=unknown,9=missing.
attribute cloud_type units String 1
attribute cloud_type valid_range short 0, 99
variable surface_shortwave_cloud_radiative_forcing   float time2, columns, rows
attribute surface_shortwave_cloud_radiative_forcing _FillValue float 9999.0
attribute surface_shortwave_cloud_radiative_forcing colorBarMaximum double 2000.0
attribute surface_shortwave_cloud_radiative_forcing colorBarMinimum double 0.0
attribute surface_shortwave_cloud_radiative_forcing grid_mapping String crs
attribute surface_shortwave_cloud_radiative_forcing ioos_category String Heat Flux
attribute surface_shortwave_cloud_radiative_forcing long_name String surface shortwave cloud radiative forcing
attribute surface_shortwave_cloud_radiative_forcing units String W m-2
attribute surface_shortwave_cloud_radiative_forcing valid_range float 0.0, 1800.0
variable surface_longwave_cloud_radiative_forcing   float time2, columns, rows
attribute surface_longwave_cloud_radiative_forcing _FillValue float 9999.0
attribute surface_longwave_cloud_radiative_forcing colorBarMaximum double 2000.0
attribute surface_longwave_cloud_radiative_forcing colorBarMinimum double 0.0
attribute surface_longwave_cloud_radiative_forcing grid_mapping String crs
attribute surface_longwave_cloud_radiative_forcing ioos_category String Heat Flux
attribute surface_longwave_cloud_radiative_forcing long_name String surface longwave cloud radiative forcing
attribute surface_longwave_cloud_radiative_forcing units String W m-2
attribute surface_longwave_cloud_radiative_forcing valid_range float 0.0, 1800.0

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
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