HDF5 file, superblock version 2
group /
	attribute CONVERSION_DATE = "Sat 11 Oct 2025 05:31:16 AM MDT"
	attribute CONVERSION_PLATFORM = "Linux crhtc65 5.14.21-150400.24.46-default #1 SMP PREEMPT_DYNAMIC Thu Feb 9 08:38:18 UTC 2023 (2d95137) x86_64 x86_64 x86_64 GNU/Linux"
	attribute Conventions = "CF-1.6"
	attribute DATA_INTERPOLATION = "CISL RDA: ECOPER GRIB 1 N1280/T2559 data interpolated (or synthesized) to 5120 longitude x 2560 Gaussian latitude GRIB 1 data using emoslib-4.3.9 (compiled with cmake with grib_api-1.14.7 and fftw-3.3.8 support for gnu/gfortran-9.1.0)."
	attribute DATA_SOURCE = "ECMWF: ECOPER GRIB 1 spherical harmonics (T2559) and reduced Gaussian grid data (N1280)."
	attribute NCO = "netCDF Operators version 5.3.1 (Homepage = http://nco.sf.net, Code = http://github.com/nco/nco, Citation = 10.1016/j.envsoft.2008.03.004)"
	attribute NETCDF_COMPRESSION = "NCO: Precision-preserving compression to netCDF4/HDF5 (see \"history\" and \"NCO\" global attributes below for specifics)."
	attribute NETCDF_CONVERSION = "CISL RDA: Conversion from interpolated/synthesized GRIB 1 data to netCDF4."
	attribute NETCDF_VERSION = "4.9.2"
	attribute history = "Sat Oct 11 05:31:18 2025: ncks -4 -L 1 --baa=0 --ppc ISTL4=7 ec.oper.fc.sfc.128_038_istl4.regn1280sc.20251008.unc.nc ec.oper.fc.sfc.128_038_istl4.regn1280sc.20251008.nc"
dataset /ISTL4: float32, shape (2, 2, 2560, 5120)
	attribute _FillValue = 9.99900026e+20
	attribute data_max = 271.732544
	attribute data_min = 263.853149
	attribute ecmwf_local_table = 128
	attribute ecmwf_parameter = 38
	attribute grid_specification = "5120 longitude x 2560 Gaussian latitude (0.07deg x ~0.07deg from 0E to 359.93E and 89.946N to 89.946S)"
	attribute long_name = "Ice surface temperature layer 4"
	attribute missing_value = 9.99900026e+20
	attribute original_data_representation = "Reduced Gaussian grid (N1280)"
	attribute original_format = "WMO GRIB 1 with ECMWF local table"
	attribute quantization = "quantization_info"
	attribute quantization_nsd = 7
	attribute rda_dataset = "ds113.1"
	attribute rda_dataset_doi = "DOI: 10.5065/D68050ZV"
	attribute rda_dataset_group = "ECMWF Operational 6-hourly atmospheric surface forecast"
	attribute rda_dataset_url = "https:/rda.ucar.edu/datasets/ds113.1/"
	attribute short_name = "istl4"
	attribute units = "K"
dataset /forecast_hour: int32, shape (2)
	attribute long_name = "forecast hour"
	attribute note = "forecast_hour = 0 corresponds to the analysis"
	attribute short_name = "fhr"
	attribute standard_name = "forecast_period"
	attribute units = "hour"
	attribute units_qualifier = "hours since forecast_initial_time"
dataset /forecast_initial_time: int32, shape (2)
	attribute calendar = "gregorian"
	attribute long_name = "forecast initial time"
	attribute short_name = "fitime"
	attribute standard_name = "forecast_reference_time"
	attribute units = "hours since 1900-01-01 00:00:00"
dataset /latitude: float64, shape (2560)
	attribute long_name = "latitude"
	attribute qualifier = "Gaussian"
	attribute short_name = "lat"
	attribute units = "degrees_north"
dataset /longitude: float64, shape (5120)
	attribute long_name = "longitude"
	attribute short_name = "lon"
	attribute units = "degrees_east"
dataset /quantization_info: string(1), shape ()
	attribute algorithm = "bitgroom"
	attribute implementation = "NCO version 5.3.1"
dataset /utc_date: int32, shape (2)
	attribute long_name = "UTC date yyyy-mm-dd hh:00:00 as yyyymmddhh"
	attribute units = "Gregorian_year month day hour"