Add function for accessing ERA5 #2573
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kandersolar
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kandersolar
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kandersolar
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Discussion on available parameter though the ERA5 time series API can be found here. |
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Right now you can't pass pvlib variable names as strings: This doesn't work: variables = 'ghi'
data, meta = pvlib.iotools.get_era5(
latitude, longitude, start, end, variables, api_key, timeout=60) |
AdamRJensen
reviewed
Oct 19, 2025
AdamRJensen
approved these changes
Oct 20, 2025
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| start = pd.to_datetime(start).strftime("%Y-%m-%d") | ||
| end = pd.to_datetime(end).strftime("%Y-%m-%d") |
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Should these be localized to UTC first?
| 'reducing the request size.' | ||
| ) | ||
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| time.sleep(1) |
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Could consider reducing this to 0.5
Co-authored-by: Adam R. Jensen <39184289+AdamRJensen@users.noreply.github.com>
kandersolar
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wholmgren
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Oct 20, 2025
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| def same(x): | ||
| return x | ||
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| def k_to_c(temp_k): | ||
| return temp_k - 273.15 | ||
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| def j_to_w(j): | ||
| return j / 3600 | ||
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| def m_to_cm(m): | ||
| return m / 100 | ||
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| UNITS = { | ||
| 'u100': same, | ||
| 'v100': same, | ||
| 'u10': same, | ||
| 'v10': same, | ||
| 'd2m': k_to_c, | ||
| 't2m': k_to_c, | ||
| 'msl': same, | ||
| 'sst': k_to_c, | ||
| 'skt': k_to_c, | ||
| 'sp': same, | ||
| 'ssrd': j_to_w, | ||
| 'strd': j_to_w, | ||
| 'tp': m_to_cm, | ||
| } | ||
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I'd prefix all of this with _ to discourage others from using it, even within pvlib.
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docs/sphinx/source/referencefor API changes.docs/sphinx/source/whatsnewfor all changes. Includes link to the GitHub Issue with:issue:`num`or this Pull Request with:pull:`num`. Includes contributor name and/or GitHub username (link with:ghuser:`user`).remote-data) and Milestone are assigned to the Pull Request and linked Issue.As described in #2420, the ECMWF CDS now provides a simple and fast API for retrieving timeseries ERA5 data. No need for any new dependencies (not even
cdsapi), although the nature of the API requires a sequence of requests, and one poll-and-wait step, to complete.