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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2014, 2015, 2016, 2017, 2018 Adam.Dybbroe
# Author(s):
# Adam.Dybbroe <adam.dybbroe@smhi.se>
# Panu Lahtinen <panu.lahtinen@fmi.fi>
# This program 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.
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
"""Read the NOAA/Metop AVHRR relative spectral response functions.
Data from NOAA STAR.
https://www.star.nesdis.noaa.gov/smcd/spb/fwu/homepage/AVHRR/spec_resp_func/index.html
"""
import os
import numpy as np
from pyspectral.utils import INSTRUMENTS
from pyspectral.utils import convert2hdf5 as tohdf5
from pyspectral.raw_reader import InstrumentRSR
import logging
LOG = logging.getLogger(__name__)
AVHRR_BAND_NAMES = {'avhrr/3': ['ch1', 'ch2', 'ch3a', 'ch3b', 'ch4', 'ch5'],
'avhrr/2': ['ch1', 'ch2', 'ch3', 'ch4', 'ch5'],
'avhrr/1': ['ch1', 'ch2', 'ch3', 'ch4']}
class AvhrrRSR(InstrumentRSR):
"""Container for the NOAA/Metop AVHRR RSR data"""
def __init__(self, bandname, platform_name):
super(AvhrrRSR, self).__init__(
bandname, platform_name,
AVHRR_BAND_NAMES[INSTRUMENTS[platform_name]])
self.instrument = INSTRUMENTS.get(platform_name, 'avhrr/3')
self._get_options_from_config()
self._get_bandfilenames()
LOG.debug("Filenames: %s", str(self.filenames))
if self.filenames[bandname] and os.path.exists(self.filenames[bandname]):
self.requested_band_filename = self.filenames[bandname]
if self.instrument == 'avhrr/1':
self._load(scale=0.001)
else:
self._load()
else:
LOG.warning("Couldn't find an existing file for this band: %s",
str(self.bandname))
# To be compatible with VIIRS....
self.filename = self.requested_band_filename
def _load(self, scale=1.0):
"""Load the AVHRR RSR data for the band requested"""
data = np.genfromtxt(self.requested_band_filename,
unpack=True,
names=['wavelength',
'response'],
skip_header=1)
wavelength = data['wavelength'] * scale
response = data['response']
self.rsr = {'wavelength': wavelength, 'response': response}
def main():
"""Main"""
# for platform_name in ["NOAA-17", "NOAA-16", "NOAA-14", "NOAA-12",
# "NOAA-11", "NOAA-9", "NOAA-7",
# "NOAA-10", "NOAA-8", "NOAA-6", "TIROS-N",
# "NOAA-15"]:
for platform_name in ["Metop-C", ]:
tohdf5(AvhrrRSR, platform_name, AVHRR_BAND_NAMES[
INSTRUMENTS[platform_name]])
if __name__ == "__main__":
main()
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