A Python library to read the L1C IASI native files
This library offers a pythonic interface to read the data produced by the IASI interferometers (in native format).
More information about the IASI interferometers and their data can be found at the following web page: https://navigator.eumetsat.int/product/EO:EUM:DAT:0101
Clone this repository with the following command:
git clone [email protected]:spiani/piasi_reader.git
and then install the software using pip (the Package Installer for Python):
cd piasi_reader
pip install .
If you lack the permission to install packages globally with pip, you can add the
--user flag
pip install --user .
Import the library
from piasi_reader import IasiL1cNativeFile
From there, you can create a IasiL1cNativefile object starting
from the path of a file:
iasi_file = IasiL1cNativeFile(file_path)
A IasiL1cNativeFile gives access to all the information stored in the
original file. For example, we can get the latitudes of the observations
latitudes = iasi_file.get_latitudes()
Other methods are: get_longitudes, get_radiances, get_zenith_angles,
get_solar_zenith_angles, get_solar_azimuth_angles, get_avhrr_cloud_fractions,
get_land_fractions, get_date_day, get_date_msec, get_obs_times and
get_channels.
If those methods are not enough, you can access to each record of the file with the
method get_record(i) where i is the index of the record (between 0 and the total
number of records of the file minus 1). You can check the total number of records
by reading the property n_of_records of the IasiL1CNativeFile.
If you want to access to a mdrs record, please call the method read_mdrs on the
file object in advance, othewise the content of the record will not be
interpreted (i.e., you will only receive a sequence of bytes).