Python scripts for reformatting specific NSIDC SMMR-SSM/I-SSMIS data products in polar stereographic projections from netCDF to binary.
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See the LICENSE for details on permissions and warranties. Please contact nsidc@nsidc.org for more information.
The python scripts in this repository require:
These requirements are also included in the provided environment.yml file,
which can be used with conda to install the
requirements into a conda environment.
The requirements for the included scripts can be installed with conda:
$ conda env create -f environment.yml
$ conda activate ps_nc2bin
The nc2bin_tb.py python script converts DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures, Version 6 and Near-Real-Time DMSP SSM/I-SSMIS Daily Polar Gridded Brightness Temperatures, Version 2 netCDF data to the original binary format used in earlier versions.
The script takes the path to an netCDF file as an argument and produces binary files corresponding to data from each passive microwave channel (e.g., n19h, s91v) contained in the netCDF file.
Each script produces outputs in a directory provided as the second command-line argument or in the directory ./extracted_bins if no directory name is provided.
Requires netCDF4 python package.
$ python nc2bin_tb.py /path/to/existing/netcdf/NSIDC0001_TB_PS_N12.5km_20080101_v6.0.nc
Wrote: extracted_bins/tb_f13_20080101_v6_n85h.bin
Wrote: extracted_bins/tb_f13_20080101_v6_n85v.bin
Wrote: extracted_bins/tb_f17_20080101_v6_n91h.bin
Wrote: extracted_bins/tb_f17_20080101_v6_n91v.bin
$ python nc2bin_tb.py /path/to/existing/netcdf/NSIDC0080_TB_PS_S12.5km_20080101_v6.0.nc legacy_tbs
Wrote: legacy_tbs/tb_f16_20220130_nrt_s19h.bin
Wrote: legacy_tbs/tb_f16_20220130_nrt_s19v.bin
Wrote: legacy_tbs/tb_f16_20220130_nrt_s22v.bin
Wrote: legacy_tbs/tb_f16_20220130_nrt_s37h.bin
Wrote: legacy_tbs/tb_f16_20220130_nrt_s37v.bin
Wrote: legacy_tbs/tb_f17_20220130_nrt_s19h.bin
Wrote: legacy_tbs/tb_f17_20220130_nrt_s19v.bin
Wrote: legacy_tbs/tb_f17_20220130_nrt_s22v.bin
Wrote: legacy_tbs/tb_f17_20220130_nrt_s37h.bin
Wrote: legacy_tbs/tb_f17_20220130_nrt_s37v.bin
Wrote: legacy_tbs/tb_f18_20220130_nrt_s19h.bin
Wrote: legacy_tbs/tb_f18_20220130_nrt_s19v.bin
Wrote: legacy_tbs/tb_f18_20220130_nrt_s22v.bin
Wrote: legacy_tbs/tb_f18_20220130_nrt_s37h.bin
Wrote: legacy_tbs/tb_f18_20220130_nrt_s37v.bin
The nc2bin_siconc.py python script converts Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Verson 2, Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS, Version 4, and Near-Real-Time DMSP
SSMIS Daily Polar Gridded Sea Ice Concentrations, Version
2 NetCDF data to the original binary format
from earlier versions.
The script takes the path to a netCDF file as an argument and produces binary
files corresponding to sea ice concentration estimates from DMSP satellite
(e.g., f16, f17, f18) contained in the netCDF file. NetCDF files are
created for each day, even if no ice concentration fields are calculated.
When run with netCDF files with no sea ice concentration fields, the script
does not produce any binary output files.
The script produces outputs in the directory from which the program was invoked.
Requires netCDF4 python package.
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0081_SEAICE_PS_N25km_20211101_v2.0.nc
Wrote: ./nt_20211101_f16_nrt_n.bin
Wrote: ./nt_20211101_f17_nrt_n.bin
Wrote: ./nt_20211101_f18_nrt_n.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0081_SEAICE_PS_S25km_20211101_v2.0.nc
Wrote: ./nt_20211101_f16_nrt_s.bin
Wrote: ./nt_20211101_f17_nrt_s.bin
Wrote: ./nt_20211101_f18_nrt_s.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0051_SEAICE_PS_N25km_19900301_v2.0.nc
Wrote: ./nt_19900301_f08_v1.1_n.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0051_SEAICE_PS_S25km_20201101_v2.0.nc
Wrote: ./nt_20201101_f17_v1.1_s.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0079_SEAICE_PS_N25km_19870501_v4.0.nc
Wrote: ./nt_19900301_f08_v1.1_n.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0079_SEAICE_PS_S25km_20201101_v2.0.nc
Wrote: ./nt_20201101_f17_v1.1_s.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0079_SEAICE_PS_N25km_19870301_v4.0.nc
Wrote: bt_19870301_n07_v4.0_n.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0079_SEAICE_PS_N25km_19870401_v4.0.nc
<<-- Note: No output because data field is empty
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0079_SEAICE_PS_N25km_19870501_v4.0.nc
<<-- Note: No output because data field is empty
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0079_SEAICE_PS_N25km_198705_v4.0.nc
Wrote: bt_198705_n07_v4.0_n.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0079_SEAICE_PS_N25km_20220701_v4.0.nc
Wrote: bt_20220701_f17_v4.0_n.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0079_SEAICE_PS_N25km_202207_v4.0.nc
Wrote: bt_202207_f17_v4.0_n.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0079_SEAICE_PS_S25km_20220701_v4.0.nc
Wrote: bt_20220701_f17_v4.0_s.bin
$ python nc2bin_siconc.py /path/to/existing/netcdf/NSIDC0079_SEAICE_PS_S25km_202207_v4.0.nc
Wrote: bt_202207_f17_v4.0_s.bin
See LICENSE, unless otherwise stated in the README file with each subdirectory.
See Code of Conduct.
Credit is provided in the README file within each subdirectory.