ERA5: The 'format' key for requests is deprecated, please use 'data_format' instead

[Zetison]

This MWE

from pathlib import Path
from metocean_api import ts

# Pick a tiny time window to keep requests small
start_time = "2020-01-01"
end_time   = "2020-01-02"

# Your approx Akkasæter bbox centre (from your error log)
lon = 18.48
lat = 69.062

# ERA5 in metocean-api; docs list product='ERA5' as valid. [2](https://metocean-api.readthedocs.io/en/stable/)[3](https://metocean-api.readthedocs.io/en/latest/index.html)
product = "ERA5"

# Keep it minimal: one variable (2m temperature)
variable = ["2m_temperature"]

out_csv = Path("era5_point.csv").resolve()

ts_data = ts.TimeSeries(
    lon=lon,
    lat=lat,
    start_time=start_time,
    end_time=end_time,
    product=product,
    variable=variable,
    datafile=None,
)

# Match your pattern: set .datafile then import
ts_data.datafile = str(out_csv)
# This is the call that, in your case, ends up raising HTTPError 400 via requests
ts_data.import_data(save_csv=True, save_nc=False, use_cache=True)

Produces the error

The job has failed
The 'format' key for requests is deprecated, please use 'data_format' instead. Use of 'format' is no longer part of the system testing, therefore it is not guaranteed to work.

This was produced with Python 3.11.15 and metocean-api 1.1.12.

[Zetison]

It seems that no grid points are covered by the bounding box since

lon = 18.499
lat = 71

works, but not

lon = 18.49899
lat = 71

The latter misses grid points at lon = 18.50 (as the resolution for ERA5 is 0.25 degrees)? I guess the requested area should have lengths at least 0.25 degrees.

The area is defined here. It is strange as the coordinate lon = 53.32 and lat = 1.32 also fails (the commented example area).