Equal Angle Grid
All of the Filled NDVI Products are stored on an equal angle lat-lon grid.
The grid resolution is dependant on the product ranges from 1-minute resolution (2 km at the equator and < 1 km at the pole) to 10°.
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.