Hi found the answer on this post : Issues using the CDS API in Python
in the .cdsapirc file, you have to change the URL to url: ads.atmosphere.copernicus.eu/api . Now the csv files are correctly saved on my computer .
Hi found the answer on this post : Issues using the CDS API in Python
in the .cdsapirc file, you have to change the URL to url: ads.atmosphere.copernicus.eu/api . Now the csv files are correctly saved on my computer .