mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-27 08:49:16 +08:00
f3218a2e2c
re: Issue https://github.com/Unidata/netcdf-c/issues/1848 The existing Virtual File Driver built to support byte-range read-only file access is quite old. It turns out to be extremely slow (reason unknown at the moment). Starting with HDF5 1.10.6, the HDF5 library has its own version of such a file driver. The HDF5 developers have better knowledge about building such a driver and what incantations are needed to get good performance. This PR modifies the byte-range code in hdf5open.c so that if the HDF5 file driver is available, then it is used in preference to the one written by the Netcdf group. Misc. Other Changes: 1. Moved all of nc4print code to ncdump to keep appveyor quiet.
298 lines
17 KiB
Plaintext
298 lines
17 KiB
Plaintext
netcdf OR_ABI-L1b-RadC-M3C13_G16_s20170590337505_e20170590340289_c20170590340316 {
|
|
dimensions:
|
|
y = 1500 ;
|
|
x = 2500 ;
|
|
number_of_time_bounds = 2 ;
|
|
band = 1 ;
|
|
number_of_image_bounds = 2 ;
|
|
num_star_looks = 24 ;
|
|
variables:
|
|
short Rad(y, x) ;
|
|
Rad:_FillValue = 4095s ;
|
|
Rad:long_name = "ABI L1b Radiances" ;
|
|
Rad:standard_name = "toa_outgoing_radiance_per_unit_wavenumber" ;
|
|
Rad:_Unsigned = "true" ;
|
|
Rad:sensor_band_bit_depth = 12b ;
|
|
Rad:valid_range = 0s, 4094s ;
|
|
Rad:scale_factor = 0.04572892f ;
|
|
Rad:add_offset = -1.6443f ;
|
|
Rad:units = "mW m-2 sr-1 (cm-1)-1" ;
|
|
Rad:resolution = "y: 0.000056 rad x: 0.000056 rad" ;
|
|
Rad:coordinates = "band_id band_wavelength t y x" ;
|
|
Rad:grid_mapping = "goes_imager_projection" ;
|
|
Rad:cell_methods = "t: point area: point" ;
|
|
Rad:ancillary_variables = "DQF" ;
|
|
byte DQF(y, x) ;
|
|
DQF:_FillValue = -1b ;
|
|
DQF:long_name = "ABI L1b Radiances data quality flags" ;
|
|
DQF:standard_name = "status_flag" ;
|
|
DQF:_Unsigned = "true" ;
|
|
DQF:valid_range = 0b, 3b ;
|
|
DQF:units = "1" ;
|
|
DQF:coordinates = "band_id band_wavelength t y x" ;
|
|
DQF:grid_mapping = "goes_imager_projection" ;
|
|
DQF:cell_methods = "t: point area: point" ;
|
|
DQF:flag_values = 0b, 1b, 2b, 3b ;
|
|
DQF:flag_meanings = "good_pixel_qf conditionally_usable_pixel_qf out_of_range_pixel_qf no_value_pixel_qf" ;
|
|
DQF:number_of_qf_values = 4b ;
|
|
DQF:percent_good_pixel_qf = 1.f ;
|
|
DQF:percent_conditionally_usable_pixel_qf = 0.f ;
|
|
DQF:percent_out_of_range_pixel_qf = 0.f ;
|
|
DQF:percent_no_value_pixel_qf = 0.f ;
|
|
double t ;
|
|
t:long_name = "J2000 epoch mid-point between the start and end image scan in seconds" ;
|
|
t:standard_name = "time" ;
|
|
t:units = "seconds since 2000-01-01 12:00:00" ;
|
|
t:axis = "T" ;
|
|
t:bounds = "time_bounds" ;
|
|
short y(y) ;
|
|
y:scale_factor = -5.6e-05f ;
|
|
y:add_offset = 0.126532f ;
|
|
y:units = "rad" ;
|
|
y:axis = "Y" ;
|
|
y:long_name = "GOES fixed grid projection y-coordinate" ;
|
|
y:standard_name = "projection_y_coordinate" ;
|
|
short x(x) ;
|
|
x:scale_factor = 5.6e-05f ;
|
|
x:add_offset = -0.075012f ;
|
|
x:units = "rad" ;
|
|
x:axis = "X" ;
|
|
x:long_name = "GOES fixed grid projection x-coordinate" ;
|
|
x:standard_name = "projection_x_coordinate" ;
|
|
double time_bounds(number_of_time_bounds) ;
|
|
time_bounds:long_name = "Scan start and end times in seconds since epoch (2000-01-01 12:00:00)" ;
|
|
int goes_imager_projection ;
|
|
goes_imager_projection:long_name = "GOES-R ABI fixed grid projection" ;
|
|
goes_imager_projection:grid_mapping_name = "geostationary" ;
|
|
goes_imager_projection:perspective_point_height = 35786023. ;
|
|
goes_imager_projection:semi_major_axis = 6378137. ;
|
|
goes_imager_projection:semi_minor_axis = 6356752.31414 ;
|
|
goes_imager_projection:inverse_flattening = 298.2572221 ;
|
|
goes_imager_projection:latitude_of_projection_origin = 0. ;
|
|
goes_imager_projection:longitude_of_projection_origin = -89.5 ;
|
|
goes_imager_projection:sweep_angle_axis = "x" ;
|
|
float y_image ;
|
|
y_image:long_name = "GOES-R fixed grid projection y-coordinate center of image" ;
|
|
y_image:standard_name = "projection_y_coordinate" ;
|
|
y_image:units = "rad" ;
|
|
y_image:axis = "Y" ;
|
|
float y_image_bounds(number_of_image_bounds) ;
|
|
y_image_bounds:long_name = "GOES-R fixed grid projection y-coordinate north/south extent of image" ;
|
|
float x_image ;
|
|
x_image:long_name = "GOES-R fixed grid projection x-coordinate center of image" ;
|
|
x_image:standard_name = "projection_x_coordinate" ;
|
|
x_image:units = "rad" ;
|
|
x_image:axis = "X" ;
|
|
float x_image_bounds(number_of_image_bounds) ;
|
|
x_image_bounds:long_name = "GOES-R fixed grid projection x-coordinate west/east extent of image" ;
|
|
float nominal_satellite_subpoint_lat ;
|
|
nominal_satellite_subpoint_lat:long_name = "nominal satellite subpoint latitude (platform latitude)" ;
|
|
nominal_satellite_subpoint_lat:standard_name = "latitude" ;
|
|
nominal_satellite_subpoint_lat:_FillValue = -999.f ;
|
|
nominal_satellite_subpoint_lat:units = "degrees_north" ;
|
|
float nominal_satellite_subpoint_lon ;
|
|
nominal_satellite_subpoint_lon:long_name = "nominal satellite subpoint longitude (platform longitude)" ;
|
|
nominal_satellite_subpoint_lon:standard_name = "longitude" ;
|
|
nominal_satellite_subpoint_lon:_FillValue = -999.f ;
|
|
nominal_satellite_subpoint_lon:units = "degrees_east" ;
|
|
float nominal_satellite_height ;
|
|
nominal_satellite_height:long_name = "nominal satellite height above GRS 80 ellipsoid (platform altitude)" ;
|
|
nominal_satellite_height:standard_name = "height_above_reference_ellipsoid" ;
|
|
nominal_satellite_height:_FillValue = -999.f ;
|
|
nominal_satellite_height:units = "km" ;
|
|
float geospatial_lat_lon_extent ;
|
|
geospatial_lat_lon_extent:long_name = "geospatial latitude and longitude references" ;
|
|
geospatial_lat_lon_extent:geospatial_westbound_longitude = -140.6163f ;
|
|
geospatial_lat_lon_extent:geospatial_northbound_latitude = 52.76771f ;
|
|
geospatial_lat_lon_extent:geospatial_eastbound_longitude = -49.17929f ;
|
|
geospatial_lat_lon_extent:geospatial_southbound_latitude = 14.00016f ;
|
|
geospatial_lat_lon_extent:geospatial_lat_center = 29.294f ;
|
|
geospatial_lat_lon_extent:geospatial_lon_center = -91.406f ;
|
|
geospatial_lat_lon_extent:geospatial_lat_nadir = 0.f ;
|
|
geospatial_lat_lon_extent:geospatial_lon_nadir = -89.5f ;
|
|
geospatial_lat_lon_extent:geospatial_lat_units = "degrees_north" ;
|
|
geospatial_lat_lon_extent:geospatial_lon_units = "degrees_east" ;
|
|
byte yaw_flip_flag ;
|
|
yaw_flip_flag:long_name = "Flag indicating the spacecraft is operating in yaw flip configuration" ;
|
|
yaw_flip_flag:_Unsigned = "true" ;
|
|
yaw_flip_flag:_FillValue = -1b ;
|
|
yaw_flip_flag:valid_range = 0b, 1b ;
|
|
yaw_flip_flag:units = "1" ;
|
|
yaw_flip_flag:coordinates = "t" ;
|
|
yaw_flip_flag:flag_values = "0 1" ;
|
|
yaw_flip_flag:flag_meanings = "false true" ;
|
|
byte band_id(band) ;
|
|
band_id:long_name = "ABI band number" ;
|
|
band_id:standard_name = "sensor_band_identifier" ;
|
|
band_id:units = "1" ;
|
|
float band_wavelength(band) ;
|
|
band_wavelength:long_name = "ABI band central wavelength" ;
|
|
band_wavelength:standard_name = "sensor_band_central_radiation_wavelength" ;
|
|
band_wavelength:units = "um" ;
|
|
float esun ;
|
|
esun:long_name = "bandpass-weighted solar irradiance at the mean Earth-Sun distance" ;
|
|
esun:standard_name = "toa_shortwave_irradiance_per_unit_wavelength" ;
|
|
esun:_FillValue = -999.f ;
|
|
esun:units = "W m-2 um-1" ;
|
|
esun:coordinates = "band_id band_wavelength t" ;
|
|
esun:cell_methods = "t: mean" ;
|
|
float kappa0 ;
|
|
kappa0:long_name = "Inverse of the incoming top of atmosphere radiance at current earth-sun distance (PI d2 esun-1)-1, where d is the ratio of instantaneous Earth-Sun distance divided by the mean Earth-Sun distance, esun is the bandpass-weighted solar irradiance and PI is a standard constant used to convert ABI L1b radiance to reflectance" ;
|
|
kappa0:_FillValue = -999.f ;
|
|
kappa0:units = "(W m-2 um-1)-1" ;
|
|
kappa0:coordinates = "band_id band_wavelength t" ;
|
|
kappa0:cell_methods = "t: mean" ;
|
|
float planck_fk1 ;
|
|
planck_fk1:long_name = "wavenumber-dependent coefficient (2 h c2/ nu3) used in the ABI emissive band monochromatic brightness temperature computation, where nu =central wavenumber and h and c are standard constants" ;
|
|
planck_fk1:_FillValue = -999.f ;
|
|
planck_fk1:units = "W m-1" ;
|
|
planck_fk1:coordinates = "band_id band_wavelength" ;
|
|
float planck_fk2 ;
|
|
planck_fk2:long_name = "wavenumber-dependent coefficient (h c nu/b) used in the ABI emissive band monochromatic brightness temperature computation, where nu = central wavenumber and h, c, and b are standard constants" ;
|
|
planck_fk2:_FillValue = -999.f ;
|
|
planck_fk2:units = "K" ;
|
|
planck_fk2:coordinates = "band_id band_wavelength" ;
|
|
float planck_bc1 ;
|
|
planck_bc1:long_name = "spectral bandpass correction offset for brightness temperature (B(nu) - bc_1)/bc_2 where B()=planck_function() and nu=wavenumber" ;
|
|
planck_bc1:_FillValue = -999.f ;
|
|
planck_bc1:units = "K" ;
|
|
planck_bc1:coordinates = "band_id band_wavelength" ;
|
|
float planck_bc2 ;
|
|
planck_bc2:long_name = "spectral bandpass correction scale factor for brightness temperature (B(nu) - bc_1)/bc_2 where B()=planck_function() and nu=wavenumber" ;
|
|
planck_bc2:_FillValue = -999.f ;
|
|
planck_bc2:units = "1" ;
|
|
planck_bc2:coordinates = "band_id band_wavelength" ;
|
|
int valid_pixel_count ;
|
|
valid_pixel_count:long_name = "number of good and conditionally usable pixels" ;
|
|
valid_pixel_count:_FillValue = -1 ;
|
|
valid_pixel_count:units = "count" ;
|
|
valid_pixel_count:coordinates = "band_id band_wavelength t y_image x_image" ;
|
|
valid_pixel_count:grid_mapping = "goes_imager_projection" ;
|
|
valid_pixel_count:cell_methods = "t: sum area: sum (interval: 0.000056 rad comment: good and conditionally usable quality pixels only)" ;
|
|
int missing_pixel_count ;
|
|
missing_pixel_count:long_name = "number of missing pixels" ;
|
|
missing_pixel_count:_FillValue = -1 ;
|
|
missing_pixel_count:units = "count" ;
|
|
missing_pixel_count:coordinates = "band_id band_wavelength t y_image x_image" ;
|
|
missing_pixel_count:grid_mapping = "goes_imager_projection" ;
|
|
missing_pixel_count:cell_methods = "t: sum area: sum (interval: 0.000056 rad comment: missing ABI fixed grid pixels only)" ;
|
|
int saturated_pixel_count ;
|
|
saturated_pixel_count:long_name = "number of saturated pixels" ;
|
|
saturated_pixel_count:_FillValue = -1 ;
|
|
saturated_pixel_count:units = "count" ;
|
|
saturated_pixel_count:coordinates = "band_id band_wavelength t y_image x_image" ;
|
|
saturated_pixel_count:grid_mapping = "goes_imager_projection" ;
|
|
saturated_pixel_count:cell_methods = "t: sum area: sum (interval: 0.000056 rad comment: radiometrically saturated geolocated/not missing pixels only)" ;
|
|
int undersaturated_pixel_count ;
|
|
undersaturated_pixel_count:long_name = "number of undersaturated pixels" ;
|
|
undersaturated_pixel_count:_FillValue = -1 ;
|
|
undersaturated_pixel_count:units = "count" ;
|
|
undersaturated_pixel_count:coordinates = "band_id band_wavelength t y_image x_image" ;
|
|
undersaturated_pixel_count:grid_mapping = "goes_imager_projection" ;
|
|
undersaturated_pixel_count:cell_methods = "t: sum area: sum (interval: 0.000056 rad comment: radiometrically undersaturated geolocated/not missing pixels only)" ;
|
|
float min_radiance_value_of_valid_pixels ;
|
|
min_radiance_value_of_valid_pixels:long_name = "minimum radiance value of pixels" ;
|
|
min_radiance_value_of_valid_pixels:standard_name = "toa_outgoing_radiance_per_unit_wavenumber" ;
|
|
min_radiance_value_of_valid_pixels:_FillValue = -999.f ;
|
|
min_radiance_value_of_valid_pixels:valid_range = -1.6443f, 185.5699f ;
|
|
min_radiance_value_of_valid_pixels:units = "mW m-2 sr-1 (cm-1)-1" ;
|
|
min_radiance_value_of_valid_pixels:coordinates = "band_id band_wavelength t y_image x_image" ;
|
|
min_radiance_value_of_valid_pixels:grid_mapping = "goes_imager_projection" ;
|
|
min_radiance_value_of_valid_pixels:cell_methods = "t: sum area: minimum (interval: 0.000056 rad comment: good and conditionally usable quality pixels only)" ;
|
|
float max_radiance_value_of_valid_pixels ;
|
|
max_radiance_value_of_valid_pixels:long_name = "maximum radiance value of pixels" ;
|
|
max_radiance_value_of_valid_pixels:standard_name = "toa_outgoing_radiance_per_unit_wavenumber" ;
|
|
max_radiance_value_of_valid_pixels:_FillValue = -999.f ;
|
|
max_radiance_value_of_valid_pixels:valid_range = -1.6443f, 185.5699f ;
|
|
max_radiance_value_of_valid_pixels:units = "mW m-2 sr-1 (cm-1)-1" ;
|
|
max_radiance_value_of_valid_pixels:coordinates = "band_id band_wavelength t y_image x_image" ;
|
|
max_radiance_value_of_valid_pixels:grid_mapping = "goes_imager_projection" ;
|
|
max_radiance_value_of_valid_pixels:cell_methods = "t: sum area: maximum (interval: 0.000056 rad comment: good and conditionally usable quality pixels only)" ;
|
|
float mean_radiance_value_of_valid_pixels ;
|
|
mean_radiance_value_of_valid_pixels:long_name = "mean radiance value of pixels" ;
|
|
mean_radiance_value_of_valid_pixels:standard_name = "toa_outgoing_radiance_per_unit_wavenumber" ;
|
|
mean_radiance_value_of_valid_pixels:_FillValue = -999.f ;
|
|
mean_radiance_value_of_valid_pixels:valid_range = -1.6443f, 185.5699f ;
|
|
mean_radiance_value_of_valid_pixels:units = "mW m-2 sr-1 (cm-1)-1" ;
|
|
mean_radiance_value_of_valid_pixels:coordinates = "band_id band_wavelength t y_image x_image" ;
|
|
mean_radiance_value_of_valid_pixels:grid_mapping = "goes_imager_projection" ;
|
|
mean_radiance_value_of_valid_pixels:cell_methods = "t: sum area: mean (interval: 0.000056 rad comment: good and conditionally usable quality pixels only)" ;
|
|
float std_dev_radiance_value_of_valid_pixels ;
|
|
std_dev_radiance_value_of_valid_pixels:long_name = "standard deviation of radiance values of pixels" ;
|
|
std_dev_radiance_value_of_valid_pixels:standard_name = "toa_outgoing_radiance_per_unit_wavenumber" ;
|
|
std_dev_radiance_value_of_valid_pixels:_FillValue = -999.f ;
|
|
std_dev_radiance_value_of_valid_pixels:units = "mW m-2 sr-1 (cm-1)-1" ;
|
|
std_dev_radiance_value_of_valid_pixels:coordinates = "band_id band_wavelength t y_image x_image" ;
|
|
std_dev_radiance_value_of_valid_pixels:grid_mapping = "goes_imager_projection" ;
|
|
std_dev_radiance_value_of_valid_pixels:cell_methods = "t: sum area: standard_deviation (interval: 0.000056 rad comment: good and conditionally usable quality pixels only)" ;
|
|
float percent_uncorrectable_L0_errors ;
|
|
percent_uncorrectable_L0_errors:long_name = "percent data lost due to uncorrectable L0 errors" ;
|
|
percent_uncorrectable_L0_errors:_FillValue = -999.f ;
|
|
percent_uncorrectable_L0_errors:valid_range = 0.f, 1.f ;
|
|
percent_uncorrectable_L0_errors:units = "percent" ;
|
|
percent_uncorrectable_L0_errors:coordinates = "t y_image x_image" ;
|
|
percent_uncorrectable_L0_errors:grid_mapping = "goes_imager_projection" ;
|
|
percent_uncorrectable_L0_errors:cell_methods = "t: sum area: sum (uncorrectable L0 errors only)" ;
|
|
float earth_sun_distance_anomaly_in_AU ;
|
|
earth_sun_distance_anomaly_in_AU:long_name = "earth sun distance anomaly in astronomical units" ;
|
|
earth_sun_distance_anomaly_in_AU:_FillValue = -999.f ;
|
|
earth_sun_distance_anomaly_in_AU:units = "ua" ;
|
|
earth_sun_distance_anomaly_in_AU:coordinates = "t" ;
|
|
earth_sun_distance_anomaly_in_AU:cell_methods = "t: mean" ;
|
|
int algorithm_dynamic_input_data_container ;
|
|
algorithm_dynamic_input_data_container:long_name = "container for filenames of dynamic algorithm input data" ;
|
|
algorithm_dynamic_input_data_container:input_ABI_L0_data = "OR_ABI-L0-C-M3_G16_s20170590337505_e20170590340289_c*.nc" ;
|
|
int processing_parm_version_container ;
|
|
processing_parm_version_container:long_name = "container for processing parameter filenames" ;
|
|
processing_parm_version_container:L1b_processing_parm_version = "ABI-L1b-PARM_G16_v01r00.zip" ;
|
|
int algorithm_product_version_container ;
|
|
algorithm_product_version_container:long_name = "container for algorithm package filename and product version" ;
|
|
algorithm_product_version_container:algorithm_version = "OR_ABI-L1b-ALG-COMMON_v01r00.zip" ;
|
|
algorithm_product_version_container:product_version = "v01r00" ;
|
|
double t_star_look(num_star_looks) ;
|
|
t_star_look:long_name = "J2000 epoch time of star observed in seconds" ;
|
|
t_star_look:standard_name = "time" ;
|
|
t_star_look:units = "seconds since 2000-01-01 12:00:00" ;
|
|
t_star_look:axis = "T" ;
|
|
float band_wavelength_star_look(num_star_looks) ;
|
|
band_wavelength_star_look:long_name = "ABI band central wavelength associated with observed star" ;
|
|
band_wavelength_star_look:standard_name = "sensor_band_central_radiation_wavelength" ;
|
|
band_wavelength_star_look:units = "um" ;
|
|
short star_id(num_star_looks) ;
|
|
star_id:long_name = "ABI star catalog identifier associated with observed star" ;
|
|
star_id:_Unsigned = "true" ;
|
|
star_id:_FillValue = -1s ;
|
|
star_id:coordinates = "band_id band_wavelength_star_look t_star_look" ;
|
|
|
|
// global attributes:
|
|
:naming_authority = "gov.nesdis.noaa" ;
|
|
:Conventions = "CF-1.7" ;
|
|
:Metadata_Conventions = "Unidata Dataset Discovery v1.0" ;
|
|
:standard_name_vocabulary = "CF Standard Name Table (v25, 05 July 2013)" ;
|
|
:institution = "DOC/NOAA/NESDIS > U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Services" ;
|
|
:project = "GOES" ;
|
|
:production_site = "WCDAS" ;
|
|
:production_environment = "OE" ;
|
|
:spatial_resolution = "2km at nadir" ;
|
|
:orbital_slot = "GOES-Test" ;
|
|
:platform_ID = "G16" ;
|
|
:instrument_type = "GOES R Series Advanced Baseline Imager" ;
|
|
:scene_id = "CONUS" ;
|
|
:instrument_ID = "FM1" ;
|
|
:title = "ABI L1b Radiances" ;
|
|
:summary = "Single emissive band ABI L1b Radiance Products are digital maps of outgoing radiance values at the top of the atmosphere for IR bands." ;
|
|
:keywords = "SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED RADIANCE" ;
|
|
:keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Earth Science Keywords, Version 7.0.0.0.0" ;
|
|
:iso_series_metadata_id = "a70be540-c38b-11e0-962b-0800200c9a66" ;
|
|
:license = "Unclassified data. Access is restricted to approved users only." ;
|
|
:processing_level = "L1b" ;
|
|
:cdm_data_type = "Image" ;
|
|
:dataset_name = "OR_ABI-L1b-RadC-M3C13_G16_s20170590337505_e20170590340289_c20170590340316.nc" ;
|
|
:production_data_source = "Realtime" ;
|
|
:timeline_id = "ABI Mode 3" ;
|
|
:date_created = "2017-02-28T03:40:31.6Z" ;
|
|
:time_coverage_start = "2017-02-28T03:37:50.5Z" ;
|
|
:time_coverage_end = "2017-02-28T03:40:28.9Z" ;
|
|
:id = "037d7688-bd22-4ffb-9727-45e0c2890a72" ;
|
|
}
|