8000 Change surface_azimuth convention in get_pvgis_hourly by AdamRJensen · Pull Request #1739 · pvlib/pvlib-python · GitHub
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Change surface_azimuth convention in get_pvgis_hourly #1739

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Merged
merged 14 commits into from
May 25, 2023
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Add azimuth warning section
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AdamRJensen committed May 22, 2023
commit 0aea4ea895f4bdc567891b6ec3db9f05c85b67fb
7 changes: 7 additions & 0 deletions pvlib/iotools/pvgis.py
Original file line number Diff line number Diff line change
Expand Up @@ -154,6 +154,13 @@ def get_pvgis_hourly(latitude, longitude, start=None, end=None,
time stamp convention, e.g., SARAH and SARAH2 provide instantaneous values,
whereas values from ERA5 are averages for the hour.

Warning
-------
The azimuth orientation specified in the output metadata does not
correspond to the pvlib convention, but is offset 180 degrees. This is
despite the fact that the input parameter `surface_tilt` has to be
specified according to the pvlib convention.

Notes
-----
data includes the following fields:
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