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I have downloaded a csv file with grid locations with lon/lat for European Extreme Windstorms footprints (attached). However the coordinate system of this dataset is not given.

As per the data description on the website (http://www.europeanwindstorms.org/database/dataDesc/):

The footprints were created using a model with a rotated pole at longitude = 177.5 degrees, latitude = 37.5 degrees (meaning that the z-axis of the new coordinate system lies at longitude = 177.5, latitude = 37.5 degrees. The footprints are on a regular grid in the rotated coordinate system, with horizontal grid spacing 0.22 degrees.

How to build custom coordinate system in ArcGIS using the information above?

I believe my data should fit the square in the image below:

enter image description here

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  • What have you tried so far? What does the spatial data in a row of your CSV file look like?
    – PolyGeo
    Commented Jun 14, 2017 at 10:38
  • gis.stackexchange.com/questions/10808/… and the questions linked there should help you further.
    – AndreJ
    Commented Jan 26, 2018 at 14:55

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