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Merge pull request #2717 from dnaviap/main
Add combined GRIB reader for both SEVIRI and FCI L2 products
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| reader: | ||
| name: fci_l2_grib | ||
| short_name: FCI L2 GRIB2 | ||
| long_name: MTG FCI L2 data in GRIB2 format | ||
| description: Reader for EUMETSAT MTG FCI L2 files in GRIB2 format. | ||
| status: Nominal | ||
| supports_fsspec: false | ||
| sensors: [fci] | ||
| reader: !!python/name:satpy.readers.yaml_reader.GEOFlippableFileYAMLReader | ||
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| file_types: | ||
| grib_fci_clm: | ||
| file_reader: !!python/name:satpy.readers.eum_l2_grib.EUML2GribFileHandler | ||
| file_patterns: | ||
| - '{pflag}_{location_indicator},{data_designator},MTI{spacecraft_id:1d}+FCI-2-CLM-{subtype}-{coverage}-{subsetting}-{component1}-{component2}-{component3}-{purpose}-GRIB2_{oflag}_{originator}_{processing_time:%Y%m%d%H%M%S}_{facility_or_tool}_{environment}_{start_time:%Y%m%d%H%M%S}_{end_time:%Y%m%d%H%M%S}_{processing_mode}_{special_compression}_{disposition_mode}_{repeat_cycle_in_day:>04d}_{count_in_repeat_cycle:>04d}.bin' | ||
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| datasets: | ||
| cloud_mask: | ||
| name: cloud_mask | ||
| long_name: Cloud Classification | ||
| standard_name: cloud_classification | ||
| resolution: 2000 | ||
| file_type: grib_fci_clm | ||
| parameter_number: 7 | ||
| units: "1" | ||
| flag_values: [0, 1, 2, 3] | ||
| flag_meanings: ['clear sky over water','clear sky over land', 'cloudy', 'undefined' ] |
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| #!/usr/bin/env python | ||
| # -*- coding: utf-8 -*- | ||
| # Copyright (c) 2017-2018 Satpy developers | ||
| # | ||
| # This file is part of satpy. | ||
| # | ||
| # satpy is free software: you can redistribute it and/or modify it under the | ||
| # terms of the GNU General Public License as published by the Free Software | ||
| # Foundation, either version 3 of the License, or (at your option) any later | ||
| # version. | ||
| # | ||
| # satpy is distributed in the hope that it will be useful, but WITHOUT ANY | ||
| # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR | ||
| # A PARTICULAR PURPOSE. See the GNU General Public License for more details. | ||
| # | ||
| # You should have received a copy of the GNU General Public License along with | ||
| # satpy. If not, see <http://www.gnu.org/licenses/>. | ||
| """Common functionality for FCI data readers.""" | ||
| from __future__ import annotations | ||
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| def calculate_area_extent(area_dict): | ||
| """Calculate the area extent seen by MTG FCI instrument. | ||
| Since the center of the FCI grids is located at the interface between the pixels, there are equally many | ||
| pixels (e.g. 5568/2 = 2784 for 2km grid) in each direction from the center points. Hence, the area extent | ||
| can be easily computed by simply adding and subtracting half the width and height from teh centre point (=0). | ||
| Args: | ||
| area_dict: A dictionary containing the required parameters | ||
| ncols: number of pixels in east-west direction | ||
| nlines: number of pixels in south-north direction | ||
| column_step: Pixel resulution in meters in east-west direction | ||
| line_step: Pixel resulution in meters in south-north direction | ||
| Returns: | ||
| tuple: An area extent for the scene defined by the lower left and | ||
| upper right corners | ||
| """ | ||
| ncols = area_dict["ncols"] | ||
| nlines = area_dict["nlines"] | ||
| column_step = area_dict["column_step"] | ||
| line_step = area_dict["line_step"] | ||
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| ll_c = (0 - ncols / 2.) * column_step | ||
| ll_l = (0 + nlines / 2.) * line_step | ||
| ur_c = (0 + ncols / 2.) * column_step | ||
| ur_l = (0 - nlines / 2.) * line_step | ||
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| return (ll_c, ll_l, ur_c, ur_l) |
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| REPEAT_CYCLE_DURATION = 15 | ||
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| REPEAT_CYCLE_DURATION_RSS = 5 | ||
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| C1 = 1.19104273e-5 | ||
| C2 = 1.43877523 | ||
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