pygac-fdr

Python package for creating a Fundamental Data Record (FDR) of AVHRR GAC data using pygac

Installation

To install the latest release:

pip install pygac-fdr

To install the latest development version:

pip install git+https://github.com/pytroll/pygac-fdr

Usage

To read and calibrate AVHRR GAC level 1b data, adapt the config template in etc/pygac-fdr.yaml, then run:

pygac-fdr-run --cfg=my_config.yaml /data/avhrr_gac/NSS.GHRR.M1.D20021.S0*

Results are written into the specified output directory in netCDF format. Afterwards, collect and complement metadata of the generated netCDF files:

pygac-fdr-mda-collect --dbfile=test.sqlite3 /data/avhrr_gac/output/*

This might take some time, so the results are saved into a database. You can specify files from multiple platforms; the metadata are analyzed for each platform separately. Finally, update the netCDF metadata inplace:

pygac-fdr-mda-update --dbfile=test.sqlite3