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Those with root access, or that have already configured a working python environment can go tho the next session.
To fully cover the topic of installing virtual environments, users can look at this tutorial Using virtual Python environment.
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The change involves only the code line c = cdsapi.Client()
It must may be changed in:
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|---|---|---|
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| c = cdsapi.Client(api_key=[your key as specified in the api-how-to], end_pointurl=''https://cds.climate.copernicus.eu/api/v2") |
This method for providing the credentials may be considered bad practice, because a user will put in plane text his credentials.
A more safe way usable also in all platforms is to set up 2 environmental variables with the required informations:
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CDSAPI_URL
CDSAPI_KEY |
More hands-on example:
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#!/usr/bin/env python
import cdsapi
from datetime import datetime, timedelta
p_levels = [str(z) for z in ([1] + list(range(50, 1050, 50)))]
c = cdsapi.Client()
def days_of_month(y, m):
d0 = datetime(y, m, 1)
d1 = datetime(y, m + 1, 1)
out = list()
while d0 < d1:
out.append(d0.strftime('%Y-%m-%d'))
d0 += timedelta(days=1)
return out
for y in range(2008, 2018):
for m in range(1,13):
for d in days_of_month(y, m):
c.retrieve("reanalysis-era5-pressure-levels",
{
"variable": "temperature",
"pressure_level": p_levels,
"product_type": "reanalysis",
"date": d,
"time":[
'00:00','01:00','02:00',
'03:00','04:00','05:00',
'06:00','07:00','08:00',
'09:00','10:00','11:00',
'12:00','13:00','14:00',
'15:00','16:00','17:00',
'18:00','19:00','20:00',
'21:00','22:00','23:00'
],
"format": "netcdf"
},
"ea_t_{day}.nc".format(day=d)
) |
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