From 436a3d3eaebcca11d8da6d8b1bb4f6f543e135e4 Mon Sep 17 00:00:00 2001
From: Jonas Gunz <himself@jonasgunz.de>
Date: Wed, 18 Oct 2023 23:55:21 +0200
Subject: implemented aggreator

---
 download.py | 120 ------------------------------------------------------------
 1 file changed, 120 deletions(-)
 delete mode 100755 download.py

(limited to 'download.py')

diff --git a/download.py b/download.py
deleted file mode 100755
index fdaa3f4..0000000
--- a/download.py
+++ /dev/null
@@ -1,120 +0,0 @@
-#!/usr/bin/env python3
-
-import requests
-import datetime
-import pytz
-import requests
-import os
-
-from multiprocessing import cpu_count
-from multiprocessing.pool import ThreadPool
-
-import subprocess
-
-import misc
-
-BASE='https://opendata.dwd.de/weather/nwp'
-
-def get_current_run():
-    # we allow up to 3h of slack for DWD to upload the latest run
-    tz = pytz.timezone('UTC')
-    now = datetime.datetime.now(datetime.timezone.utc)
-    corrected = now - datetime.timedelta(hours=3)
-
-    run = int(corrected.hour / 6) * 6
-
-    return (f'{run:02d}', corrected.strftime('%Y%m%d'))
-
-def download_url(args):
-    url, dest = args
-    r = requests.get(url)
-    try:
-        with open(dest, 'wb') as f:
-            f.write(r.content)
-        print(f'Downloaded {dest}')
-    except Exception as e:
-        print(f'Failed to download {dest}:\n', e)
-
-def unpack_bz2(dest):
-    res = subprocess.run(['bzip2', '-df', dest])
-    if res.returncode != 0:
-        print(f'There was an error unpacking {dest}:', res.stderr)
-
-def download_dwd_gribs(config, date, run, target):
-    model = config['model']
-    model_long = config['model_long']
-
-    misc.create_output_dir(config['output'])
-
-    to_download = []
-
-    for step in config['steps']:
-        step_str = f'{step:03d}'
-
-        for parameter in config['pressure_level_parameters']:
-            parameter2 = parameter.upper() if config['parameter_caps_in_filename'] else parameter
-
-            for level in config['pressure_levels']:
-                filename = f'{model_long}_regular-lat-lon_pressure-level_{date}{run}_{step_str}_{level}_{parameter2}.grib2.bz2'
-                URL = f'{BASE}/{model}/grib/{run}/{parameter}/{filename}'
-
-                to_download.append((URL, os.path.join(config['output'], filename)))
-
-        for parameter in config['single_level_parameters']:
-            parameter2 = parameter.upper() if config['parameter_caps_in_filename'] else parameter
-            filename = f'{model_long}_regular-lat-lon_single-level_{date}{run}_{step_str}_{parameter2}.grib2.bz2'
-            URL = f'{BASE}/{model}/grib/{run}/{parameter}/{filename}'
-
-            to_download.append((URL, os.path.join(config['output'], filename)))
-
-
-    for _ in ThreadPool(cpu_count()).imap_unordered(download_url, to_download):
-        pass
-
-    print('Done Downloading. Uncompressing...')
-
-    for _ in ThreadPool(cpu_count()).imap_unordered(unpack_bz2, [dest for _, dest in to_download]):
-        pass
-
-    downloaded_gribs = [dest.removesuffix('.bz2') for _, dest in to_download]
-
-    res = subprocess.run(['grib_copy'] + downloaded_gribs + [target])
-    if res.returncode != 0:
-        print('grib_copy failed with: ', res.stderr)
-
-    res = subprocess.run(['rm', '-f'] + downloaded_gribs)
-    if res.returncode != 0:
-        print('rm failed with: ', res.stderr)
-
-def load_data(config):
-    run, date = get_current_run()
-    target = os.path.join(config['output'], f'combined_{date}_{run}.grib2')
-
-    if not os.path.exists(target):
-        download_dwd_gribs(config, date, run, target)
-
-config = {
-    'output':'dwd_icon-eu',
-    'model':'icon-eu',
-    'model_long':'icon-eu_europe',
-    'parameter_caps_in_filename':True,
-    'pressure_level_parameters': [
-        't',
-        'relhum',
-        'u',
-        'v',
-        'fi',
-        'clc'
-    ],
-    'single_level_parameters': [
-        'pmsl',
-        't_2m',
-        'relhum_2m'
-    ],
-    'pressure_levels':[ 1000, 950, 925, 900, 875, 850, 825, 800, 775, 700, 600, 500, 400, 300, 250, 200, 150, 100 ],
-    'steps':[0, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48]
-}
-
-if __name__ == '__main__':
-    load_data(config)
-
-- 
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