Add possibility to define the dataset rectification longitude in seviri_l2_bufr reader #2078
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…add_rectification_longitude_to_seviri_l2_bufr_reader
…add_rectification_longitude_to_seviri_l2_bufr_reader
Codecov Report
@@ Coverage Diff @@
## main #2078 +/- ##
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Coverage 93.79% 93.80%
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Files 283 283
Lines 42284 42295 +11
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+ Hits 39662 39673 +11
Misses 2622 2622
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mraspaud
reviewed
Apr 6, 2022
mraspaud
added
enhancement
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The SEVIRI L2 BUFR data are originally been extracted from a rectified two-dimensional SEVIRI grid with a given central longitude (typically the sub-satellite point). Previously this longitude was hard-coded for each SEVIRI instrument (Meteosat satellite) in the reader, following the current operational grids. This is sub-optimal when working with e.g. historic data where the operational grid for a given instrument is different, as this will lead to an incorrect
AreaDefinitionin case the data are returned with one (with_area_definition=True). Since the information about the satellite position or original grid rectification longitude is not available in the file itself or the filename (for files from the EUMETSAT archive) and cannot be reliably derived from all datasets themselves, this PR adds the possibility to provide this information as areader_kwarg(rectification_longitude) when initializing theSceneobject for theseviri_l2_bufrreader.If this
reader_kwargis not provided, the default longitude defined for a given satellite/instrument will be used (unless the information can be extracted from the filename (internal EUMETSAT files)) thus following the previous implementation.The PR also modifies the default SSP_LON for Meteosat-9 in preparation for it's upcoming relocation to the IODC service at 45.5 degrees east.