[gradsusr] Help Displaying NetCDF File

L.B. bcbass2989 at gmail.com
Wed Jan 24 21:58:03 EST 2018


I wanted to experiment with some new seasonal snowfall accumulation data
from this link: https://www.nohrsc.noaa.gov/snowfall/

The seasonal data is in NetCDF form. I downloaded the file and attempted to
open it with 'sdfopen' which gave me the following:

Grid Analysis and Display System (GrADS) Version 2.1.a3
Copyright (C) 1988-2015 by the Institute for Global Environment and Society
(IGES)
GrADS comes with ABSOLUTELY NO WARRANTY
See file COPYRIGHT for more information

Config: v2.1.a3 little-endian readline grib2 netcdf hdf4-sds hdf5
opendap-grids,stn geotiff shapefile cairo
Issue 'q config' command for more detailed configuration information
Landscape mode? ('n' for portrait):
GX Package Initialization: Size = 11 8.5
ga-> sdfopen sfav2_CONUS_2017093012_to_2018012212.nc
Scanning self-describing file:  sfav2_CONUS_2017093012_to_2018012212.nc
read_ncatts: global attribute 0 type 12 not supported
read_ncatts: global attribute 1 type 12 not supported
read_ncatts: global attribute 2 type 12 not supported
read_ncatts: global attribute 3 type 12 not supported
read_ncatts: global attribute 4 type 12 not supported
read_ncatts: global attribute 5 type 12 not supported
read_ncatts: global attribute 6 type 12 not supported
read_ncatts: lat attribute 0 type 12 not supported
read_ncatts: lat attribute 1 type 12 not supported
read_ncatts: lat attribute 2 type 12 not supported
read_ncatts: lat attribute 5 type 12 not supported
read_ncatts: lon attribute 0 type 12 not supported
read_ncatts: lon attribute 1 type 12 not supported
read_ncatts: lon attribute 2 type 12 not supported
read_ncatts: lon attribute 5 type 12 not supported
read_ncatts: crs attribute 0 type 12 not supported
read_ncatts: crs attribute 1 type 12 not supported
read_ncatts: Data attribute 0 type 12 not supported
read_ncatts: Data attribute 2 type 12 not supported
read_ncatts: Data attribute 3 type 12 not supported
read_ncatts: Data attribute 4 type 12 not supported
read_ncatts: Data attribute 5 type 12 not supported
read_ncatts: Data attribute 6 type 12 not supported
read_ncatts: Data attribute 9 type 12 not supported
read_ncatts: Data attribute 15 type 12 not supported
read_ncatts: Data attribute 16 type 12 not supported
read_ncatts: Data attribute 17 type 12 not supported
gadsdf: SDF file has no discernable X coordinate.
  To open this file with GrADS, use a descriptor file with an XDEF entry.
  Documentation is at http://iges.org/grads/gadoc/SDFdescriptorfile.html

Next, I attempted to make a ctl file and use 'xdfopen'. I used ncdump on
the netcdf file and got this output:

ncdump -c sfav2_CONUS_2017093012_to_2018012212.nc
netcdf sfav2_CONUS_2017093012_to_2018012212 {
dimensions:
lat = 850 ;
lon = 1500 ;
nv = 2 ;
variables:
double lat(lat) ;
string lat:long_name = "latitude" ;
string lat:units = "degrees_north" ;
string lat:standard_name = "latitude" ;
lat:resolution = 0.04 ;
lat:origin_offset = 0.02 ;
string lat:bounds = "lat_bounds" ;
double lat_bounds(lat, nv) ;
double lon(lon) ;
string lon:long_name = "longitude" ;
string lon:units = "degrees_east" ;
string lon:standard_name = "longitude" ;
lon:resolution = 0.04 ;
lon:origin_offset = 0.02 ;
string lon:bounds = "lon_bounds" ;
double lon_bounds(lon, nv) ;
short crs ;
string crs:horizontal_datum = "WGS84" ;
string crs:grid_mapping_name = "latitude_longitude" ;
crs:longitude_of_prime_meridian = 0. ;
crs:semi_major_axis = 6378137. ;
crs:inverse_flattening = 298.257223563 ;
float Data(lat, lon) ;
string Data:institution = "Office of Water Prediction" ;
Data:gisrs_product_code = 623 ;
string Data:long_name = "snowfall accumulation" ;
string Data:standard_name = "thickness_of_snowfall_amount" ;
string Data:satellite_data = "no" ;
string Data:thematic = "no" ;
string Data:data_are_elevations = "no" ;
Data:number_of_color_tables = 0s ;
Data:_FillValue = -99999.f ;
string Data:units = "m" ;
Data:add_offset = 0.f ;
Data:scale_factor = 1.f ;
Data:no_data_value = -99999.f ;
Data:minimum_data_value = 0.f ;
Data:maximum_data_value = 19.84752f ;
string Data:start_date = "2017-09-30 12:00:00 UTC" ;
string Data:stop_date = "2018-01-22 12:00:00 UTC" ;
string Data:grid_mapping = "crs" ;

// global attributes:
string :format_version = "NOHRSC NetCDF raster file v1.2" ;
string :Conventions = "CF-1.6" ;
string :title = "The National Snowfall Analysis, Version 2, is based on a
background snowfall estimate generated from Stage IV quantitative
precipitation estimates (QPE) (i.e., operational mosaics of QPE generated
at River Forecast Centers), with the snow proportion determined by snow
water:precipitation ratios in 3-hour High Resolution Rapid Refresh (HRRR)
forecasts. The resulting accumulated snow water equivalent amount is
converted to accumulated snowfall using gridded
snowfall-to-liquid-equivalent ratios estimated from the 1985-2015
climatology of daily Global Historical Climatology Network (GHCN-D)
precipitation and snowfall observations. Differences between the resulting
background estimate and observed 24-hour snowfall observations are
interpolated spatially in two ordinary kriging passes, the first for bias
adjustment, the second for error correction. This process is performed on a
144 arc-second (0.04 degree) longitude/latitude grid over the Conterminous
United States. This file provides a 114-day aggregation of 24-hour analysis
results, not an independent 114-day analysis." ;
string :source = "surface observations of snowfall; Stage IV QPE; HRRR;
GHCN-D" ;
string :history = "2018-01-22 22:06:09 UTC created by module:
aggregate_snowfall_v2.pro" ;
string :comment = "2018-01-22 22:06:09 UTC created comment:
aggregate_snowfall_v2.pro written in IDL by Greg Fall and Kent Sparrow,
2017" ;
string :references = "Not applicable" ;
data:

 lat = 54.98, 54.94, 54.9, 54.86, 54.82, 54.78, 54.74, 54.7, 54.66, 54.62,
    54.58, 54.54, 54.5, 54.46, 54.42, 54.38, 54.34, 54.3, 54.26, 54.22,
    54.18, 54.14, 54.1, 54.06, 54.02, 53.98, 53.94, 53.9, 53.86, 53.82,
    53.78, 53.74, 53.7, 53.66, 53.62, 53.58, 53.54, 53.5, 53.46, 53.42,
    53.38, 53.34, 53.3, 53.26, 53.22, 53.18, 53.14, 53.1, 53.06, 53.02,
    52.98, 52.94, 52.9, 52.86, 52.82, 52.78, 52.74, 52.7, 52.66, 52.62,
    52.58, 52.54, 52.5, 52.46, 52.42, 52.38, 52.34, 52.3, 52.26, 52.22,
    52.18, 52.14, 52.1, 52.06, 52.02, 51.98, 51.94, 51.9, 51.86, 51.82,
    51.78, 51.74, 51.7, 51.66, 51.62, 51.58, 51.54, 51.5, 51.46, 51.42,
    51.38, 51.34, 51.3, 51.26, 51.22, 51.18, 51.14, 51.1, 51.06, 51.02,
    50.98, 50.94, 50.9, 50.86, 50.82, 50.78, 50.74, 50.7, 50.66, 50.62,
    50.58, 50.54, 50.5, 50.46, 50.42, 50.38, 50.34, 50.3, 50.26, 50.22,
    50.18, 50.14, 50.1, 50.06, 50.02, 49.98, 49.94, 49.9, 49.86, 49.82,
    49.78, 49.74, 49.7, 49.66, 49.62, 49.58, 49.54, 49.5, 49.46, 49.42,
    49.38, 49.34, 49.3, 49.26, 49.22, 49.18, 49.14, 49.1, 49.06, 49.02,
    48.98, 48.94, 48.9, 48.86, 48.82, 48.78, 48.74, 48.7, 48.66, 48.62,
    48.58, 48.54, 48.5, 48.46, 48.42, 48.38, 48.34, 48.3, 48.26, 48.22,
    48.18, 48.14, 48.1, 48.06, 48.02, 47.98, 47.94, 47.9, 47.86, 47.82,
    47.78, 47.74, 47.7, 47.66, 47.62, 47.58, 47.54, 47.5, 47.46, 47.42,
    47.38, 47.34, 47.3, 47.26, 47.22, 47.18, 47.14, 47.1, 47.06, 47.02,
    46.98, 46.94, 46.9, 46.86, 46.82, 46.78, 46.74, 46.7, 46.66, 46.62,
    46.58, 46.54, 46.5, 46.46, 46.42, 46.38, 46.34, 46.3, 46.26, 46.22,
    46.18, 46.14, 46.1, 46.06, 46.02, 45.98, 45.94, 45.9, 45.86, 45.82,
    45.78, 45.74, 45.7, 45.66, 45.62, 45.58, 45.54, 45.5, 45.46, 45.42,
    45.38, 45.34, 45.3, 45.26, 45.22, 45.18, 45.14, 45.1, 45.06, 45.02,
    44.98, 44.94, 44.9, 44.86, 44.82, 44.78, 44.74, 44.7, 44.66, 44.62,
    44.58, 44.54, 44.5, 44.46, 44.42, 44.38, 44.34, 44.3, 44.26, 44.22,
    44.18, 44.14, 44.1, 44.06, 44.02, 43.98, 43.94, 43.9, 43.86, 43.82,
    43.78, 43.74, 43.7, 43.66, 43.62, 43.58, 43.54, 43.5, 43.46, 43.42,
    43.38, 43.34, 43.3, 43.26, 43.22, 43.18, 43.14, 43.1, 43.06, 43.02,
    42.98, 42.94, 42.9, 42.86, 42.82, 42.78, 42.74, 42.7, 42.66, 42.62,
    42.58, 42.54, 42.5, 42.46, 42.42, 42.38, 42.34, 42.3, 42.26, 42.22,
    42.18, 42.14, 42.1, 42.06, 42.02, 41.98, 41.94, 41.9, 41.86, 41.82,
    41.78, 41.74, 41.7, 41.66, 41.62, 41.58, 41.54, 41.5, 41.46, 41.42,
    41.38, 41.34, 41.3, 41.26, 41.22, 41.18, 41.14, 41.1, 41.06, 41.02,
    40.98, 40.94, 40.9, 40.86, 40.82, 40.78, 40.74, 40.7, 40.66, 40.62,
    40.58, 40.54, 40.5, 40.46, 40.42, 40.38, 40.34, 40.3, 40.26, 40.22,
    40.18, 40.14, 40.1, 40.06, 40.02, 39.98, 39.94, 39.9, 39.86, 39.82,
    39.78, 39.74, 39.7, 39.66, 39.62, 39.58, 39.54, 39.5, 39.46, 39.42,
    39.38, 39.34, 39.3, 39.26, 39.22, 39.18, 39.14, 39.1, 39.06, 39.02,
    38.98, 38.94, 38.9, 38.86, 38.82, 38.78, 38.74, 38.7, 38.66, 38.62,
    38.58, 38.54, 38.5, 38.46, 38.42, 38.38, 38.34, 38.3, 38.26, 38.22,
    38.18, 38.14, 38.1, 38.06, 38.02, 37.98, 37.94, 37.9, 37.86, 37.82,
    37.78, 37.74, 37.7, 37.66, 37.62, 37.58, 37.54, 37.5, 37.46, 37.42,
    37.38, 37.34, 37.3, 37.26, 37.22, 37.18, 37.14, 37.1, 37.06, 37.02,
    36.98, 36.94, 36.9, 36.86, 36.82, 36.78, 36.74, 36.7, 36.66, 36.62,
    36.58, 36.54, 36.5, 36.46, 36.42, 36.38, 36.34, 36.3, 36.26, 36.22,
    36.18, 36.14, 36.1, 36.06, 36.02, 35.98, 35.94, 35.9, 35.86, 35.82,
    35.78, 35.74, 35.7, 35.66, 35.62, 35.58, 35.54, 35.5, 35.46, 35.42,
    35.38, 35.34, 35.3, 35.26, 35.22, 35.18, 35.14, 35.1, 35.06, 35.02,
    34.98, 34.94, 34.9, 34.86, 34.82, 34.78, 34.74, 34.7, 34.66, 34.62,
    34.58, 34.54, 34.5, 34.46, 34.42, 34.38, 34.34, 34.3, 34.26, 34.22,
    34.18, 34.14, 34.1, 34.06, 34.02, 33.98, 33.94, 33.9, 33.86, 33.82,
    33.78, 33.74, 33.7, 33.66, 33.62, 33.58, 33.54, 33.5, 33.46, 33.42,
    33.38, 33.34, 33.3, 33.26, 33.22, 33.18, 33.14, 33.1, 33.06, 33.02,
    32.98, 32.94, 32.9, 32.86, 32.82, 32.78, 32.74, 32.7, 32.66, 32.62,
    32.58, 32.54, 32.5, 32.46, 32.42, 32.38, 32.34, 32.3, 32.26, 32.22,
    32.18, 32.14, 32.1, 32.06, 32.02, 31.98, 31.94, 31.9, 31.86, 31.82,
    31.78, 31.74, 31.7, 31.66, 31.62, 31.58, 31.54, 31.5, 31.46, 31.42,
    31.38, 31.34, 31.3, 31.26, 31.22, 31.18, 31.14, 31.1, 31.06, 31.02,
    30.98, 30.94, 30.9, 30.86, 30.82, 30.78, 30.74, 30.7, 30.66, 30.62,
    30.58, 30.54, 30.5, 30.46, 30.42, 30.38, 30.34, 30.3, 30.26, 30.22,
    30.18, 30.14, 30.1, 30.06, 30.02, 29.98, 29.94, 29.9, 29.86, 29.82,
    29.78, 29.74, 29.7, 29.66, 29.62, 29.58, 29.54, 29.5, 29.46, 29.42,
    29.38, 29.34, 29.3, 29.26, 29.22, 29.18, 29.14, 29.1, 29.06, 29.02,
    28.98, 28.94, 28.9, 28.86, 28.82, 28.78, 28.74, 28.7, 28.66, 28.62,
    28.58, 28.54, 28.5, 28.46, 28.42, 28.38, 28.34, 28.3, 28.26, 28.22,
    28.18, 28.14, 28.1, 28.06, 28.02, 27.98, 27.94, 27.9, 27.86, 27.82,
    27.78, 27.74, 27.7, 27.66, 27.62, 27.58, 27.54, 27.5, 27.46, 27.42,
    27.38, 27.34, 27.3, 27.26, 27.22, 27.18, 27.14, 27.1, 27.06, 27.02,
    26.98, 26.94, 26.9, 26.86, 26.82, 26.78, 26.74, 26.7, 26.66, 26.62,
    26.58, 26.54, 26.5, 26.46, 26.42, 26.38, 26.34, 26.3, 26.26, 26.22,
    26.18, 26.14, 26.1, 26.06, 26.02, 25.98, 25.94, 25.9, 25.86, 25.82,
    25.78, 25.74, 25.7, 25.66, 25.62, 25.58, 25.54, 25.5, 25.46, 25.42,
    25.38, 25.34, 25.3, 25.26, 25.22, 25.18, 25.14, 25.1, 25.06, 25.02,
    24.98, 24.94, 24.9, 24.86, 24.82, 24.78, 24.74, 24.7, 24.66, 24.62,
    24.58, 24.54, 24.5, 24.46, 24.42, 24.38, 24.34, 24.3, 24.26, 24.22,
    24.18, 24.14, 24.1, 24.06, 24.02, 23.98, 23.94, 23.9, 23.86, 23.82,
    23.78, 23.74, 23.7, 23.66, 23.62, 23.58, 23.54, 23.5, 23.46, 23.42,
    23.38, 23.34, 23.3, 23.26, 23.22, 23.18, 23.14, 23.1, 23.06, 23.02,
    22.98, 22.94, 22.9, 22.86, 22.82, 22.78, 22.74, 22.7, 22.66, 22.62,
    22.58, 22.54, 22.5, 22.46, 22.42, 22.38, 22.34, 22.3, 22.26, 22.22,
    22.18, 22.14, 22.1, 22.06, 22.02, 21.98, 21.94, 21.9, 21.86, 21.82,
    21.78, 21.74, 21.7, 21.66, 21.62, 21.58, 21.54, 21.5, 21.46, 21.42,
    21.38, 21.34, 21.3, 21.26, 21.22, 21.18, 21.14, 21.1, 21.06, 21.02 ;

 lon = -125.98, -125.94, -125.9, -125.86, -125.82, -125.78, -125.74,
-125.7,
    -125.66, -125.62, -125.58, -125.54, -125.5, -125.46, -125.42, -125.38,
    -125.34, -125.3, -125.26, -125.22, -125.18, -125.14, -125.1, -125.06,
    -125.02, -124.98, -124.94, -124.9, -124.86, -124.82, -124.78, -124.74,
    -124.7, -124.66, -124.62, -124.58, -124.54, -124.5, -124.46, -124.42,
    -124.38, -124.34, -124.3, -124.26, -124.22, -124.18, -124.14, -124.1,
    -124.06, -124.02, -123.98, -123.94, -123.9, -123.86, -123.82, -123.78,
    -123.74, -123.7, -123.66, -123.62, -123.58, -123.54, -123.5, -123.46,
    -123.42, -123.38, -123.34, -123.3, -123.26, -123.22, -123.18, -123.14,
    -123.1, -123.06, -123.02, -122.98, -122.94, -122.9, -122.86, -122.82,
    -122.78, -122.74, -122.7, -122.66, -122.62, -122.58, -122.54, -122.5,
    -122.46, -122.42, -122.38, -122.34, -122.3, -122.26, -122.22, -122.18,
    -122.14, -122.1, -122.06, -122.02, -121.98, -121.94, -121.9, -121.86,
    -121.82, -121.78, -121.74, -121.7, -121.66, -121.62, -121.58, -121.54,
    -121.5, -121.46, -121.42, -121.38, -121.34, -121.3, -121.26, -121.22,
    -121.18, -121.14, -121.1, -121.06, -121.02, -120.98, -120.94, -120.9,
    -120.86, -120.82, -120.78, -120.74, -120.7, -120.66, -120.62, -120.58,
    -120.54, -120.5, -120.46, -120.42, -120.38, -120.34, -120.3, -120.26,
    -120.22, -120.18, -120.14, -120.1, -120.06, -120.02, -119.98, -119.94,
    -119.9, -119.86, -119.82, -119.78, -119.74, -119.7, -119.66, -119.62,
    -119.58, -119.54, -119.5, -119.46, -119.42, -119.38, -119.34, -119.3,
    -119.26, -119.22, -119.18, -119.14, -119.1, -119.06, -119.02, -118.98,
    -118.94, -118.9, -118.86, -118.82, -118.78, -118.74, -118.7, -118.66,
    -118.62, -118.58, -118.54, -118.5, -118.46, -118.42, -118.38, -118.34,
    -118.3, -118.26, -118.22, -118.18, -118.14, -118.1, -118.06, -118.02,
    -117.98, -117.94, -117.9, -117.86, -117.82, -117.78, -117.74, -117.7,
    -117.66, -117.62, -117.58, -117.54, -117.5, -117.46, -117.42, -117.38,
    -117.34, -117.3, -117.26, -117.22, -117.18, -117.14, -117.1, -117.06,
    -117.02, -116.98, -116.94, -116.9, -116.86, -116.82, -116.78, -116.74,
    -116.7, -116.66, -116.62, -116.58, -116.54, -116.5, -116.46, -116.42,
    -116.38, -116.34, -116.3, -116.26, -116.22, -116.18, -116.14, -116.1,
    -116.06, -116.02, -115.98, -115.94, -115.9, -115.86, -115.82, -115.78,
    -115.74, -115.7, -115.66, -115.62, -115.58, -115.54, -115.5, -115.46,
    -115.42, -115.38, -115.34, -115.3, -115.26, -115.22, -115.18, -115.14,
    -115.1, -115.06, -115.02, -114.98, -114.94, -114.9, -114.86, -114.82,
    -114.78, -114.74, -114.7, -114.66, -114.62, -114.58, -114.54, -114.5,
    -114.46, -114.42, -114.38, -114.34, -114.3, -114.26, -114.22, -114.18,
    -114.14, -114.1, -114.06, -114.02, -113.98, -113.94, -113.9, -113.86,
    -113.82, -113.78, -113.74, -113.7, -113.66, -113.62, -113.58, -113.54,
    -113.5, -113.46, -113.42, -113.38, -113.34, -113.3, -113.26, -113.22,
    -113.18, -113.14, -113.1, -113.06, -113.02, -112.98, -112.94, -112.9,
    -112.86, -112.82, -112.78, -112.74, -112.7, -112.66, -112.62, -112.58,
    -112.54, -112.5, -112.46, -112.42, -112.38, -112.34, -112.3, -112.26,
    -112.22, -112.18, -112.14, -112.1, -112.06, -112.02, -111.98, -111.94,
    -111.9, -111.86, -111.82, -111.78, -111.74, -111.7, -111.66, -111.62,
    -111.58, -111.54, -111.5, -111.46, -111.42, -111.38, -111.34, -111.3,
    -111.26, -111.22, -111.18, -111.14, -111.1, -111.06, -111.02, -110.98,
    -110.94, -110.9, -110.86, -110.82, -110.78, -110.74, -110.7, -110.66,
    -110.62, -110.58, -110.54, -110.5, -110.46, -110.42, -110.38, -110.34,
    -110.3, -110.26, -110.22, -110.18, -110.14, -110.1, -110.06, -110.02,
    -109.98, -109.94, -109.9, -109.86, -109.82, -109.78, -109.74, -109.7,
    -109.66, -109.62, -109.58, -109.54, -109.5, -109.46, -109.42, -109.38,
    -109.34, -109.3, -109.26, -109.22, -109.18, -109.14, -109.1, -109.06,
    -109.02, -108.98, -108.94, -108.9, -108.86, -108.82, -108.78, -108.74,
    -108.7, -108.66, -108.62, -108.58, -108.54, -108.5, -108.46, -108.42,
    -108.38, -108.34, -108.3, -108.26, -108.22, -108.18, -108.14, -108.1,
    -108.06, -108.02, -107.98, -107.94, -107.9, -107.86, -107.82, -107.78,
    -107.74, -107.7, -107.66, -107.62, -107.58, -107.54, -107.5, -107.46,
    -107.42, -107.38, -107.34, -107.3, -107.26, -107.22, -107.18, -107.14,
    -107.1, -107.06, -107.02, -106.98, -106.94, -106.9, -106.86, -106.82,
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    -71.26, -71.22, -71.18, -71.14, -71.1, -71.06, -71.02, -70.98, -70.94,
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    -70.54, -70.5, -70.46, -70.42, -70.38, -70.34, -70.3, -70.26, -70.22,
    -70.18, -70.14, -70.1, -70.06, -70.02, -69.98, -69.94, -69.9, -69.86,
    -69.82, -69.78, -69.74, -69.7, -69.66, -69.62, -69.58, -69.54, -69.5,
    -69.46, -69.42, -69.38, -69.34, -69.3, -69.26, -69.22, -69.18, -69.14,
    -69.1, -69.06, -69.02, -68.98, -68.94, -68.9, -68.86, -68.82, -68.78,
    -68.74, -68.7, -68.66, -68.62, -68.58, -68.54, -68.5, -68.46, -68.42,
    -68.38, -68.34, -68.3, -68.26, -68.22, -68.18, -68.14, -68.1, -68.06,
    -68.02, -67.98, -67.94, -67.9, -67.86, -67.82, -67.78, -67.74, -67.7,
    -67.66, -67.62, -67.58, -67.54, -67.5, -67.46, -67.42, -67.38, -67.34,
    -67.3, -67.26, -67.22, -67.18, -67.14, -67.1, -67.06, -67.02, -66.98,
    -66.94, -66.9, -66.86, -66.82, -66.78, -66.74, -66.7, -66.66, -66.62,
    -66.58, -66.54, -66.5, -66.46, -66.42, -66.38, -66.34, -66.3, -66.26,
    -66.22, -66.18, -66.14, -66.1, -66.06, -66.02 ;
}

I used this data to create this very basic ctl file following the
guidelines from GrADS documentation:

DSET ^sfav2_CONUS_2017093012_to_2018012212.nc
TITLE NOHRSC Seasonal Snowfall Accumulation
UNDEF -99999
XDEF lat 1500 LINEAR -125.98 0.04
YDEF lon 850 LINEAR 21.02 0.04
VARS 1
Data=>snow 1 Y,X Snowfall
ENDVARS

I then tried opening the file in GrADS:

Grid Analysis and Display System (GrADS) Version 2.1.a3
Copyright (C) 1988-2015 by the Institute for Global Environment and Society
(IGES)
GrADS comes with ABSOLUTELY NO WARRANTY
See file COPYRIGHT for more information

Config: v2.1.a3 little-endian readline grib2 netcdf hdf4-sds hdf5
opendap-grids,stn geotiff shapefile cairo
Issue 'q config' command for more detailed configuration information
Landscape mode? ('n' for portrait):
GX Package Initialization: Size = 11 8.5
ga-> xdfopen snow_nc.ctl
Scanning Descriptor File:  snow_nc.ctl
read_ncatts: global attribute 0 type 12 not supported
read_ncatts: global attribute 1 type 12 not supported
read_ncatts: global attribute 2 type 12 not supported
read_ncatts: global attribute 3 type 12 not supported
read_ncatts: global attribute 4 type 12 not supported
read_ncatts: global attribute 5 type 12 not supported
read_ncatts: global attribute 6 type 12 not supported
read_ncatts: lat attribute 0 type 12 not supported
read_ncatts: lat attribute 1 type 12 not supported
read_ncatts: lat attribute 2 type 12 not supported
read_ncatts: lat attribute 5 type 12 not supported
read_ncatts: lon attribute 0 type 12 not supported
read_ncatts: lon attribute 1 type 12 not supported
read_ncatts: lon attribute 2 type 12 not supported
read_ncatts: lon attribute 5 type 12 not supported
read_ncatts: crs attribute 0 type 12 not supported
read_ncatts: crs attribute 1 type 12 not supported
read_ncatts: Data attribute 0 type 12 not supported
read_ncatts: Data attribute 2 type 12 not supported
read_ncatts: Data attribute 3 type 12 not supported
read_ncatts: Data attribute 4 type 12 not supported
read_ncatts: Data attribute 5 type 12 not supported
read_ncatts: Data attribute 6 type 12 not supported
read_ncatts: Data attribute 9 type 12 not supported
read_ncatts: Data attribute 15 type 12 not supported
read_ncatts: Data attribute 16 type 12 not supported
read_ncatts: Data attribute 17 type 12 not supported
SDF file has no discernable time coordinate -- using default values.
SDF file sfav2_CONUS_2017093012_to_2018012212.nc is open as file 1
LON set to -125.98 -66.02
LAT set to 21.02 54.98
LEV set to 0 0
Time values set: 1:1:1:0 1:1:1:0
E set to 1 1
ga-> q file
File 1 : NOHRSC Seasonal Snowfall Accumulation
  Descriptor: snow_nc.ctl
  Binary: sfav2_CONUS_2017093012_to_2018012212.nc
  Type = Gridded
  Xsize = 1500  Ysize = 850  Zsize = 1  Tsize = 1  Esize = 1
  Number of Variables = 1
     snow  0  x,y  Data
ga-> d snow
gancgrid error: nc_get_vara_double failed; NetCDF: Start+count exceeds
dimension bound
Data Request Error:  Error for variable 'snow'
  Error ocurred at column 1
DISPLAY error:  Invalid expression
  Expression = snow

Can anyone point me to what I'm missing or help me display this data? I'm
not really sure what the 'data attribute type not supported' errors are
either - I can't seem to find much on it.

Thanks!
*-------*
William (L.B.) LaForce IV
Meteorologist
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