1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (c) 2019-2022 Pytroll developers
#
#
# 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 Geo-Kompsat-2a AMI spectral response functions.
Data from the NWPSAF:
https://nwpsaf.eu/downloads/rtcoef_rttov12/ir_srf/rtcoef_gkompsat2_1_ami_srf.html
"""
import logging
import os
import numpy as np
from pyspectral.raw_reader import InstrumentRSR
from pyspectral.utils import convert2hdf5 as tohdf5
LOG = logging.getLogger(__name__)
AMI_BAND_NAMES = ['ch1', 'ch2', 'ch3', 'ch4', 'ch5',
'ch6', 'ch7', 'ch8', 'ch9', 'ch10',
'ch11', 'ch12', 'ch13', 'ch14', 'ch15',
'ch16']
#: Default time format
_DEFAULT_TIME_FORMAT = '%Y-%m-%d %H:%M:%S'
#: Default log format
_DEFAULT_LOG_FORMAT = '[%(levelname)s: %(asctime)s : %(name)s] %(message)s'
class AmiRSR(InstrumentRSR):
"""Container for the Geo-Kompsat-2A AMI relative spectral response data."""
def __init__(self, bandname, platform_name):
"""Initialize the AMI RSR class."""
super(AmiRSR, self).__init__(
bandname, platform_name, AMI_BAND_NAMES)
self.instrument = 'ami'
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]
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
self.unit = 'micrometer'
self.wavespace = 'wavelength'
def _load(self, scale=10000.0):
"""Load the AMI RSR data for the band requested."""
data = np.genfromtxt(self.requested_band_filename,
unpack=True,
names=['wavenumber',
'response'],
skip_header=4)
# Data are wavenumbers in cm-1:
wavelength = 1. / data['wavenumber'][::-1] * scale
response = data['response'][::-1]
# The real AMI has more than one detectors I assume. However, for now
# we store the single rsr available in the NWPSAF coefficient files:
self.rsr = {'wavelength': wavelength, 'response': response}
if __name__ == "__main__":
import sys
LOG = logging.getLogger('ami_rsr')
handler = logging.StreamHandler(sys.stderr)
formatter = logging.Formatter(fmt=_DEFAULT_LOG_FORMAT,
datefmt=_DEFAULT_TIME_FORMAT)
handler.setFormatter(formatter)
handler.setLevel(logging.DEBUG)
LOG.setLevel(logging.DEBUG)
LOG.addHandler(handler)
for platform_name in ['GEO-KOMPSAT-2A', ]:
tohdf5(AmiRSR, platform_name, AMI_BAND_NAMES)
|
