Extract Gridded Information for an ERA5Region

Let's say that we have data on a rectilinear lon-lat grid, as ERA5 data tends to have. How do we extract the data for the relevant region? How do we do this for regions that are non-rectilinear in shape? To solve these problems, we introduce the RegionGrid type, which contains information that:

• allows for the extraction of data for a subregion from a parent, larger region

• is able to use a mask to extract data for a region's shape, if it is not rectilinear

RegionGrids.RegionGrid Method

RegionGrid(
    e5geo :: ERA5Region{ST,FT},
    lon   :: Vector{<:Real},
    lat   :: Vector{<:Real}
) -> GeoRegion.RegionGrid

Creates a RegionGrid containing information and mask information required to extract regional data for the ERA5Region from the raw data.

Arguments

• e5geo : A ERA5Region struct type

• lon : A vector containing the longitude points

• lat : A vector containing the latitude points

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