#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2021 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/>.
"""Demo data download helper functions for AHI HSD data."""
import os
from satpy import config
[docs]
def download_typhoon_surigae_ahi(base_dir=None,
channels=(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16),
segments=(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)):
"""Download Himawari 8 data.
This scene shows the Typhoon Surigae.
"""
import s3fs
base_dir = base_dir or config.get("demo_data_dir", ".")
channel_resolution = {1: 10,
2: 10,
3: 5,
4: 10}
data_files = []
for channel in channels:
resolution = channel_resolution.get(channel, 20)
for segment in segments:
data_files.append(f"HS_H08_20210417_0500_B{channel:02d}_FLDK_R{resolution:02d}_S{segment:02d}10.DAT.bz2")
subdir = os.path.join(base_dir, "ahi_hsd", "20210417_0500_typhoon_surigae")
os.makedirs(subdir, exist_ok=True)
fs = s3fs.S3FileSystem(anon=True)
result = []
for filename in data_files:
destination_filename = os.path.join(subdir, filename)
result.append(destination_filename)
if os.path.exists(destination_filename):
continue
to_get = "noaa-himawari8/AHI-L1b-FLDK/2021/04/17/0500/" + filename
fs.get_file(to_get, destination_filename)
return result