Equal Angle Grid
The Ecosystem Product is stored on an equal angle lat-lon grid at 1-minute resolution.
The upper left corner position of the first grid cell (1,1)
is located at latitude 90°N and longitude 180°W.
The convention used here is degrees north latitude are stored as positive numbers;
while degrees west longitudes are stored as negative numbers.
This allows lat/lon pairs to increase from top to bottom and left to right on the grid.