ERDDAP > info > iscpp_hgg_by_time_levpc_lat_lon

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	Meta- data	Back- ground Info	RSS	Institution	Dataset ID
data			graph			ISCCP H Global Gridded (HGG) By time, levpc, latitude, longitude		M	background		International Clo...	iscpp_hgg_by_time_levpc_lat_lon

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	_CoordSysBuilder	String	ucar.nc2.dataset.conv.CF1Convention
attribute	NC_GLOBAL	acknowledgement	String	This project received funding support from NASA REASON PROGRAM, NASA MEASURES PROGRAM and NOAA CLIMATE DATA RECORD (CDR) PROGRAM
attribute	NC_GLOBAL	cdm_data_type	String	Grid
attribute	NC_GLOBAL	comment	String	---------- TO RE-MAP EQUAL-AREA MAP TO EQUAL-ANGLE (SQUARE LON,LAT) MAP ---------- For display purposes, the ISCCP equal-area map may be converted to an equal-angle map using replication. The variables 'eqlat_index', 'sqlon_beg' and 'sqlon_end'are provided for this purpose. Each equal-area cell is replicated into a specific range of longitude cells in the equal-angle map. For example, to remap an equal-area array eqvar[41252] to an equal-angle array sqmap[360,180], each eqvar[i] should be replicated into the range of cells indicated by sqlon_beg[i] and sqlon_end[i], and the lat index eqlat_index[i]. Using Fortran notation the assignment is: sqmap[sqlon_beg[i]:sqlon_end[i], eqlat_index[i]] = eqvar[i]. ---------- TO CONVERT COUNT UNITS TO PHYSICAL UNITS ---------- When attribute conversion_table is present for any variable, the reported values of count units may be converted to physical quantities by using the specified conversion table variable as a look-up table whose index is count value 0-255. For example, temperature = tmptab(count), temperature_variance = tmpvar(count), pressure = pretab(count), reflectance = rfltab(count), optical_depth = tautab(count), ozone = ozntab(count), humidity = humtab(count), water_path = wpatab(count). ---------- DEFINITION OF CLOUD TYPES ---------- VIS/IR cloud types are defined by a histogram of cloud top pressure and cloud optical depth, for both liquid and ice clouds. IR cloud types are defined by a histogram of cloud top pressure. Identification labels for the 18 VIS/IR cloud types and the 3 IR cloud types are given in the 'cloud_type_label' and 'cloud_irtype_label' variables, which correspond to the order of the cloud type variable arrays. ---------- TO COMPUTE CLOUD TOP HEIGHT ---------- Cloud top height in meters may be computed by applying lapse rate to the difference between cloud top temperature and surface temperature. Given rlapse 6.5, the formula is: height_meters = (ts - tc) / rlapse * 1000.0. ---------- TO COMPUTE TOTAL IR BRIGHTNESS TEMPERATURE ---------- Using IR cloud/clear categories: n_ir_clear = n_total - n_ir_cloudy, and then total_ir_bt = ( (n_ir_cloudy * ir_ircloudy) + (n_ir_clear * ir_irclear) ) / n_total, where ir_ircloudy and ir_irclear are values of count units. The resulting total_ir_bt can be converted from count units to physical units using the tmptab conversion table. Using VIS/IR cloud/clear categories: n_clear = n_total - n_cloudy, and then total_ir_bt = ( (n_cloudy * ir_visircloudy)+ (n_clear * ir_visirclear) / n_total, where ir_visircloudy and ir_visirclear are values of count units. The resulting total_ir_bt can be converted from count units to physical units using the tmptab conversion table. ---------- TO COMPUTE TOTAL VIS RADIANCE ---------- Using IR cloud/clear categories: n_ir_clear = n_total - n_ir_cloudy, and then total_vis_radiance = ( (n_ir_cloudy * vis_ircloudy) + (n_ir_clear * vis_irclear) ) / n_total. Using VIS/IR cloud/clear categories: n_clear = n_total - n_cloudy, and then total_vis_radiance = ( (n_cloudy * vis_visircloudy)+ (n_clear * vis_visirclear) / n_total.
attribute	NC_GLOBAL	contributor_name	String	William B. Rossow, Alison Walker, Violeta Golea, NOAA, EUMETSAT, ESA, JP/JMA, CHINA/CMA, BR/INPE, NASA
attribute	NC_GLOBAL	contributor_role	String	principalInvestigator, processor, resourceProvider, resourceProvider, resourceProvider, resourceProvider, resourceProvider, resourceProvider, resourceProvider
attribute	NC_GLOBAL	Conventions	String	CF-1.4, ACDD-1.3
attribute	NC_GLOBAL	creator_email	String	ncdc.isccp.team at noaa.gov
attribute	NC_GLOBAL	creator_institution	String	NOAA National Centers for Environmental Information (NCEI)
attribute	NC_GLOBAL	creator_name	String	NOAA National Centers for Environmental Information (NCEI); Ken Knapp, Bill Hankins, Alisa Young, Anand Inamdar
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	http://www.ncei.noaa.gov
attribute	NC_GLOBAL	date_created	String	2019-07-19T07:27:35Z
attribute	NC_GLOBAL	date_issued	String	2019-07-19T07:27:35Z
attribute	NC_GLOBAL	date_metadata_modified	String	2019-07-19T07:27:35Z
attribute	NC_GLOBAL	date_modified	String	2019-07-19T07:27:35Z
attribute	NC_GLOBAL	Easternmost_Easting	double	359.5
attribute	NC_GLOBAL	geospatial_bounds	String	POLYGON((-90.0 0.0, -90.0 360.0, 90.0 360.0, 90.0 0.0, -90.0 0.0))
attribute	NC_GLOBAL	geospatial_bounds_crs	String	EPSG:4326
attribute	NC_GLOBAL	geospatial_lat_max	double	89.5
attribute	NC_GLOBAL	geospatial_lat_min	double	-89.5
attribute	NC_GLOBAL	geospatial_lat_resolution	double	1.0
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	359.5
attribute	NC_GLOBAL	geospatial_lon_min	double	0.5
attribute	NC_GLOBAL	geospatial_lon_resolution	double	1.0
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	history	String	Fri Jul 19 07:27:36 2019: ncatted -a units,lon_bounds,c,c,degrees_east -a comment,lon_bounds,c,c,longitude values at east and west bounds of the grid cell -a units,lat_bounds,c,c,degrees_north -a comment,lat_bounds,c,c,latitude values at north and south bounds of the gridcell -a units,pc_bounds,c,c,hPa -a comment,pc_bounds,c,c,Pressure values at bounds of the pressure bins -a units,tau_bounds,c,c,1 -a comment,tau_bounds,c,c,Optical depth values at bounds of the depth bins -a axis,lat,c,c,Y -a axis,lon,c,c,X -a geospatial_lat_min,global,m,f,-90 -a geospatial_lat_max,global,m,f,90 -a geospatial_lat_resolution,global,m,f,1 -a geospatial_lon_min,global,m,f,0 -a geospatial_lon_max,global,m,f,360 -a geospatial_lon_resolution,global,m,f,1 -a geospatial_vertical_min,global,m,f,10 -a geospatial_vertical_max,global,m,f,1025 -a units,satcodes,d,, -a units,satids,d,, -a units,satnames,d,, -a units,cloud_irtype_label,d,, -a units,cloud_type_label,d,, /glfs2/isccp-p/basic/intermediate//temp_file3.nc -O /glfs2/isccp-p/prd/basic/hgg/2017/ISCCP-Basic.HGG.0.GLOBAL.2017.06.30.1800.GPC.10KM.CS00.EA1.00.nc Fri Jul 19 07:27:35 2019: ncatted -a conversion_table,,d,, -a title,global,a,c, Basic -a description,snoice,m,c,Mean snow/ice cover for the cell -a source,global,o,c,The source for the ISCCP Basic data files are the original ISCCP files. ISCCP Basic represents a subset of variables from ISCCP that have been remapped to equal-angle, do not use table to store data, etc. in order to make the files CF compliant -a product_version,global,m,c,v01r00 Basic -a date_issued,global,m,c,2019-07-19T07:27:35Z -a date_created,global,m,c,2019-07-19T07:27:35Z -a date_modified,global,m,c,2019-07-19T07:27:35Z -a date_metadata_modified,global,m,c,2019-07-19T07:27:35Z -a description,levpc,c,c,Coordinate variable for cloud frequency histograms -a description,levtau,c,c,Coordinate variable for cloud frequency histograms -a units,^cldamt,m,c,percent -a bounds,time,c,c,time_bounds -a valid_min,n_total,m,s,0 -a valid_max,n_total,m,s,32766 -a valid_min,snoice,m,b,0 -a valid_max,snoice,m,b,100 -a long_name,cldamt,m,c,Cloud amount -a long_name,cldamt_ir,m,c,Cloud amount (using IR data) -a long_name,cldamt_irmarg,m,c,Cloud amount uncertainty (using IR data) -a note,cldamt_irmarg,c,c,This is the ISCCP variable: n_irmarg_cloudy represented as a fraction. It represents the fraction of pixels that are colder than clear sky by a smaller amount than what is flagged in cldamt_ir and represents cloud amount uncertainty. -a long_name,cldamt_types,m,c,Cloud amount by cloud type -a long_name,cldamt_irtypes,m,c,Cloud amount by IR cloud type -a calendar,time,c,c,gregorian -a cell_methods,eqheight,c,c,area: mean -a cell_methods,pc,c,c,area: mean -a cell_methods,pc_ir,c,c,area: mean -a cell_methods,pc_pcdist,c,c,area: mean -a cell_methods,pc_type,c,c,area: mean -a cell_methods,^sigma,c,c,area: standard_deviation -a cell_methods,^tc,c,c,area: mean -a cell_methods,tau,c,c,area: mean -a cell_methods,tau_ir,c,c,area: mean -a cell_methods,tau_type,c,c,area: mean -a cell_methods,^wp,c,c,area: mean /glfs2/isccp-p/basic/intermediate//temp_file2.nc -O /glfs2/isccp-p/basic/intermediate//temp_file3.nc Fri Jul 19 07:27:33 2019: ncks --no-abc -4 -L 5 /glfs2/isccp-p/basic/intermediate//temp_file.nc -O /glfs2/isccp-p/basic/intermediate//temp_file2.nc 2019-05-14T19:51:21.000Z bhankins d1fill_weekly /glfs2/isccp-p/prd/wrkdirs/2017_06 2017 06 01 2017 06 30 2019-05-14T19:46:11.000Z bhankins d1fill_daily /glfs2/isccp-p/prd/wrkdirs/2017_06 2017 06 01 2017 06 30 2019-05-14T19:37:57.000Z bhankins d1fill_diurnal /glfs2/isccp-p/prd/wrkdirs/2017_06 2017 06 01 2017 06 30 2019-03-28T20:12:49.000Z bhankins d1prod /glfs2/isccp-p/prd/wrkdirs/2017_06 2017 06 01 2017 06 30 ; FMRC Best Dataset
attribute	NC_GLOBAL	id	String	ISCCP.HGG.0.GLOBAL.2017.06.30.1800.GPC.10KM.CS00.EQ1.00.nc
attribute	NC_GLOBAL	infoUrl	String	https://www.ncei.noaa.gov/thredds/catalog/cdr/isccp_hgg_agg/catalog.html?dataset=cdr/isccp_hgg_agg/ISCCP-H_Aggregation_Basic_Gridded_Global_(HGG)_best.ncd
attribute	NC_GLOBAL	institution	String	International Cloud Climatology Project (ISCPP)
attribute	NC_GLOBAL	instrument	String	Himawari-8 AHI, SEVIRI, GOES-15 Imager, GOES-13 Imager, SEVIRI,, AVHRR-3
attribute	NC_GLOBAL	instrument_vocabulary	String	NASA Global Change Master Directory (GCMD) Instruments Keywords Version 8.1
attribute	NC_GLOBAL	isccp_day	int	30
attribute	NC_GLOBAL	isccp_gmt	int	18
attribute	NC_GLOBAL	isccp_input_files	String	nom/ds/ISCCP.HGS.v01r00.MOP2.2017.06.30.1800.NOM.10KM.CS1239012419.EQ1.00.nc ins/ds/ISCCP.HGS.0.MET8.2017.06.30.1800.MTI.10KM.CS1239012419.EQ1.00.nc gow/ds/ISCCP.HGS.0.GOEF.2017.06.30.1800.CSU.10KM.CS1239012419.EQ1.00.nc met/ds/ISCCP.HGS.0.META.2017.06.30.1800.EUM.10KM.CS1239012419.EQ1.00.nc gms/ds/ISCCP.HGS.0.HIM8.2017.06.30.1800.JMA.10KM.CS1239012419.EQ1.00.nc noa/ds/ISCCP.HGS.0.NOAJ.2017.06.30.1800.NOA.10KM.CS1239012419.EQ1.00.nc goe/ds/ISCCP.HGS.0.GOED.2017.06.30.1800.AES.10KM.CS1239012419.EQ1.00.nc
attribute	NC_GLOBAL	isccp_month	int	6
attribute	NC_GLOBAL	isccp_number_of_satellites_contributing	int	7
attribute	NC_GLOBAL	isccp_percent_empty_cells	int	0
attribute	NC_GLOBAL	isccp_percent_full_cells	int	100
attribute	NC_GLOBAL	isccp_year	int	2017
attribute	NC_GLOBAL	keywords	String	Earth Science > Atmosphere > Atmospheric Chemistry > Oxygen Compounds > Ozone, Earth Science > Atmosphere > Atmospheric Pressure > Surface Pressure, Earth Science > Atmosphere > Atmospheric Temperature, Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature, Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Skin Temperature, Earth Science > Atmosphere > Atmospheric Temperature > Upper Air Temperature > Vertical Profiles, Earth Science > Atmosphere > Atmospheric Water Vapor, Earth Science > Atmosphere > Atmospheric Water Vapor > Humidity, Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor Profiles, Earth Science > Atmosphere > Clouds, Earth Science > Atmosphere > Clouds > Cloud Microphysics > Cloud Liquid Water/Ice, Earth Science > Atmosphere > Clouds > Cloud Microphysics > Cloud Optical Depth/Thickness, Earth Science > Atmosphere > Clouds > Cloud Properties, 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 Vertical Distribution, Earth Science > Atmosphere > Clouds > Cloud Types, Earth Science > Cryosphere > Snow/Ice, Earth Science > Land Surface > Surface Radiative Properties, Earth Science > Land Surface > Surface Radiative Properties > Reflectance, Earth Science > Land Surface > Surface Thermal Properties, Earth Science > Land Surface > Surface Thermal Properties > Skin Temperature, Earth Science > Land Surface > Topography > Terrain Elevation, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Spectral/Engineering > Infrared Wavelengths > Brightness Temperature, Earth Science > Spectral/Engineering > Infrared Wavelengths > Infrared Imagery, Earth Science > Spectral/Engineering > Platform Characteristics > Viewing Geometry, Earth Science > Spectral/Engineering > Sensor Characteristics > Viewing Geometry, Earth Science > Spectral/Engineering > Visible Wavelengths > Visible Imagery, Earth Science > Spectral/Engineering > Visible Wavelengths > Visible Radiance
attribute	NC_GLOBAL	keywords_vocabulary	String	NASA Global Change Master Directory (GCMD) Science Keyword Version 8.1
attribute	NC_GLOBAL	license	String	The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
attribute	NC_GLOBAL	location	String	Proto fmrc:ISCCP-H_Aggregation_Basic_Gridded_Global_(HGG)
attribute	NC_GLOBAL	metadata_link	String	gov.noaa.ncdc.C00956
attribute	NC_GLOBAL	naming_authority	String	gov.noaa.ncdc
attribute	NC_GLOBAL	NCO	String	netCDF Operators version 4.7.5 (Homepage = http://nco.sf.net, Code = https://github.com/nco/nco)
attribute	NC_GLOBAL	Northernmost_Northing	double	89.5
attribute	NC_GLOBAL	platform	String	HIM-8, METEOSAT-10, GOES-15, GOES-13, METEOSAT-8, NOAA-19, METOP-A
attribute	NC_GLOBAL	platform_vocabulary	String	NASA Global Change Master Directory (GCMD) Platforms Keyword Version 8.1
attribute	NC_GLOBAL	processing_level	String	3
attribute	NC_GLOBAL	product_version	String	v01r00 Basic
attribute	NC_GLOBAL	program	String	NOAA Climate Data Record Program for satellites, FY 2016
attribute	NC_GLOBAL	project	String	International Satellite Cloud Climatology Project (ISCCP)
attribute	NC_GLOBAL	publisher_email	String	ncdc.isccp.team at noaa.gov
attribute	NC_GLOBAL	publisher_institution	String	NOAA National Centers for Environmental Information (NCEI)
attribute	NC_GLOBAL	publisher_name	String	NOAA National Centers for Environmental Information (NCEI)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	publisher_url	String	http://www.ncei.noaa.gov
attribute	NC_GLOBAL	references	String	'Please include a citation for this paper in addition to the dataset citation when using the dataset: Rossow, W.B. and R.A. Schiffer, 1999: Advances in understanding clouds from ISCCP. Bulletin of the American Meteorological Society, 80, 2261-2287. doi: https://dx.doi.org/10.1175/1520-0477(1999)080<2261:AIUCFI>2.0.CO;2','ISCCP CDR Climate Algorithm Theoretical Basis Document (C-ATBD)'
attribute	NC_GLOBAL	source	String	The source for the ISCCP Basic data files are the original ISCCP files. ISCCP Basic represents a subset of variables from ISCCP that have been remapped to equal-angle, do not use table to store data, etc. in order to make the files CF compliant
attribute	NC_GLOBAL	sourceUrl	String	https://www.ncei.noaa.gov/thredds/dodsC/cdr/isccp_hgg_agg/ISCCP-H_Aggregation_Basic_Gridded_Global_(HGG)_best.ncd
attribute	NC_GLOBAL	Southernmost_Northing	double	-89.5
attribute	NC_GLOBAL	summary	String	ISCCP H Global Gridded (HGG) Dimensioned By time, levpc, latitude, longitude.
attribute	NC_GLOBAL	time_coverage_duration	String	PT3H
attribute	NC_GLOBAL	time_coverage_end	String	2017-06-30T22:00:00Z
attribute	NC_GLOBAL	time_coverage_resolution	String	PT3H
attribute	NC_GLOBAL	time_coverage_start	String	1983-07-01T01:00:00Z
attribute	NC_GLOBAL	title	String	ISCCP H Global Gridded (HGG) By time, levpc, latitude, longitude
attribute	NC_GLOBAL	Westernmost_Easting	double	0.5
dimension	time		double	nValues=99352, evenlySpaced=true, averageSpacing=3h 0m 0s
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	4.258692E8, 1.49886E9
attribute	time	axis	String	T
attribute	time	bounds	String	time_bounds
attribute	time	calendar	String	proleptic_gregorian
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Forecast time for ForecastModelRunCollection
attribute	time	missing_value	double	NaN
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
dimension	levpc		float	nValues=7, evenlySpaced=false, averageSpacing=136.25
attribute	levpc	_ChunkSizes	int	7
attribute	levpc	_CoordinateAxisType	String	Pressure
attribute	levpc	actual_range	float	95.0, 912.5
attribute	levpc	bounds	String	pc_bounds
attribute	levpc	description	String	Coordinate variable for cloud frequency histograms
attribute	levpc	long_name	String	Pressure levels
attribute	levpc	units	String	hPa
dimension	latitude		float	nValues=180, evenlySpaced=true, averageSpacing=1.0
attribute	latitude	_ChunkSizes	int	180
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	actual_range	float	-89.5, 89.5
attribute	latitude	axis	String	Y
attribute	latitude	bounds	String	lat_bounds
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
attribute	latitude	valid_max	float	90.0
attribute	latitude	valid_min	float	-90.0
dimension	longitude		float	nValues=360, evenlySpaced=true, averageSpacing=1.0
attribute	longitude	_ChunkSizes	int	360
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	actual_range	float	0.5, 359.5
attribute	longitude	axis	String	X
attribute	longitude	bounds	String	lon_bounds
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
attribute	longitude	valid_max	float	360.0
attribute	longitude	valid_min	float	0.0
variable	n_pcdist		float	time, levpc, latitude, longitude
attribute	n_pcdist	_ChunkSizes	int	1, 7, 180, 360
attribute	n_pcdist	coordinates	String	time_run time levpc lat lon
attribute	n_pcdist	description	String	Cloud detected by IR threshold regardless of VIS threshold, cloud top located assuming blackbody
attribute	n_pcdist	long_name	String	IR cloudy pixel fraction in each cloud-top pressure (PC) level
attribute	n_pcdist	standard_name	String	isccp_cloud_area_fraction
attribute	n_pcdist	units	String	1
variable	pc_pcdist		float	time, levpc, latitude, longitude
attribute	pc_pcdist	_ChunkSizes	int	1, 7, 180, 360
attribute	pc_pcdist	cell_methods	String	area: mean
attribute	pc_pcdist	coordinates	String	time_run time levpc lat lon
attribute	pc_pcdist	description	String	Grid cell average cloud top pressures in seven pressure intervals for clouds detected by IR threshold regardless of VIS threshold, no VIS-adjustment of location
attribute	pc_pcdist	long_name	String	cloud-top pressure (PC) means for IR PC distribution levels
attribute	pc_pcdist	standard_name	String	air_pressure_at_cloud_top
attribute	pc_pcdist	units	String	hPa
variable	tc_pcdist		float	time, levpc, latitude, longitude
attribute	tc_pcdist	_ChunkSizes	int	1, 7, 180, 360
attribute	tc_pcdist	cell_methods	String	area: mean
attribute	tc_pcdist	coordinates	String	time_run time levpc lat lon
attribute	tc_pcdist	description	String	Grid cell average cloud top temperatures in seven pressure intervals for cloud detected by IR threshold regardless of VIS threshold, no VIS-adjustment of location
attribute	tc_pcdist	long_name	String	cloud-top temperature (TC) means for IR cloud-top pressure (PC) distribution levels
attribute	tc_pcdist	standard_name	String	air_temperature_at_cloud_top
attribute	tc_pcdist	units	String	K

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.