netcdf e5.oper.an.pl.128_060_pv.ll025sc.1979010100_1979010123 {
dimensions:
	time = UNLIMITED ; // (24 currently)
	level = 37 ;
	latitude = 721 ;
	longitude = 1440 ;
variables:
	float PV(time, level, latitude, longitude) ;
		PV:long_name = "Potential vorticity" ;
		PV:short_name = "pv" ;
		PV:units = "K m**2 kg**-1 s**-1" ;
		PV:original_format = "WMO GRIB 1 with ECMWF local table" ;
		PV:ecmwf_local_table = 128 ;
		PV:ecmwf_parameter = 60 ;
		PV:_FillValue = 9.999e+20f ;
		PV:missing_value = 9.999e+20f ;
		PV:minimum_value = -0.02231604f ;
		PV:maximum_value = 0.03552145f ;
		PV:grid_specification = "0.25 degree x 0.25 degree from 90N to 90S and 0E to 359.75E (721 x 1440 Latitude/Longitude)" ;
		PV:rda_dataset = "ds633.0" ;
		PV:rda_dataset_url = "https:/rda.ucar.edu/datasets/ds633.0/" ;
		PV:rda_dataset_doi = "DOI: 10.5065/BH6N-5N20" ;
		PV:rda_dataset_group = "ERA5 atmospheric pressure level analysis [netCDF4]" ;
		PV:number_of_significant_digits = 7 ;
	double latitude(latitude) ;
		latitude:long_name = "latitude" ;
		latitude:short_name = "lat" ;
		latitude:units = "degrees_north" ;
		latitude:qualifier = "Gaussian" ;
	double level(level) ;
		level:long_name = "pressure level" ;
		level:short_name = "plev" ;
		level:units = "hPa" ;
		level:alternate_units = "millibar" ;
	double longitude(longitude) ;
		longitude:long_name = "longitude" ;
		longitude:short_name = "lon" ;
		longitude:units = "degrees_east" ;
	int time(time) ;
		time:long_name = "time" ;
		time:units = "hours since 1900-01-01 00:00:00" ;
		time:calendar = "gregorian" ;
	int utc_date(time) ;
		utc_date:long_name = "UTC date yyyy-mm-dd hh:00:00 as yyyymmddhh" ;
		utc_date:units = "Gregorian_year month day hour" ;

// global attributes:
		:_NCProperties = "version=1|netcdflibversion=4.6.1|hdf5libversion=1.8.20" ;
		:DATA_SOURCE = "ECMWF: https://cds.climate.copernicus.eu, Copernicus Climate Data Store" ;
		:NETCDF_CONVERSION = "CISL RDA: Conversion from ECMWF GRIB 1 data to netCDF4." ;
		:NETCDF_VERSION = "4.6.1" ;
		:CONVERSION_PLATFORM = "Linux casper13 3.10.0-693.21.1.el7.x86_64 #1 SMP Wed Mar 7 19:03:37 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux" ;
		:CONVERSION_DATE = "Mon May 13 18:00:10 MDT 2019" ;
		:Conventions = "CF-1.6" ;
		:NETCDF_COMPRESSION = "NCO: Precision-preserving compression to netCDF4/HDF5 (see \"history\" and \"NCO\" global attributes below for specifics)." ;
		:history = "Mon May 13 18:00:40 2019: ncks -4 --ppc default=7 e5.oper.an.pl.128_060_pv.ll025sc.1979010100_1979010123.unc.nc e5.oper.an.pl.128_060_pv.ll025sc.1979010100_1979010123.nc" ;
		:NCO = "netCDF Operators version 4.7.4 (http://nco.sf.net)" ;
}