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Global Forecast System
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How do I convert a latitude/longitude coordinate to a NOAA GFS grid cell location?
The coordinates defined in Global Forecast System (GFS -0.5º Degree) data defined somewhat unusual. In the GFS, longitudes and latitude contains 720 and 361 values respectively. … Therefore to convert them to a common geographic coordinate system follow the procedure below:
Suppose you are looking for index of coordinate pairs (36.5, -78.5) in the GFS data:
your_lat_start = x …