How to get longitude and Latitude from WRF model grids?

How to get longitude and Latitude from WRF model grids?

XLONG_M and XLAT_M are the longitude and latitude grids of the mass (pressure) points. Using a programming language of choice, find the grid cell that is closest to your desired location for the child nest corner.

How to get cell indices from latitude and longitude?

Read in the xlat_m and xlong_m arrays using java netcdf. Subtracting desired lat and desired lon from each value of the 2-dimensional xlat_m and xlong_m arrays and squaring the difference. Then finding the indices i and j of the smallest element of the 2-dimensional array (not as a flattened 1-d array).

What should the missing value be in Lat WRF?

If any of the input values are out of data range in lat_wrf and/or lon_wrf, then the appropriate return values will be set to the default missing value for an integer (-999 for versions 5.2.x and earlier, -2147483647 for versions 6.x and later). This function was deprecated in NCL version 5.1.0.

How to find array indices from latitude and longitude coordinates?

In particular, use of coordinate systems such as those described in the CF Conventions section ” Two-Dimensional Latitude, Longitude, Coordinate Variables ” may not provide a direct way to find array indices from latitude and longitude coordinates for various reasons. Examples of such data include:

How to create WRF-Chem ready aircraft emissions files?

Users are highly advised to read the README files before using the fire emission utility. This is an IDL based preprocessor to create WRF-Chem ready aircraft emissions files (wrfchemaircraft_) from a global inventory in netcdf format.

Are there any emission inventory options within WRF / Chem?

Chemical mechanisms Fixedversions KPP Coupledtothe aerosol schemes RADM2 Yes Yes MADE/SORGAM, GOCART RACM None Yes MADE/SORGAM, GOCART RACM-MIM None Yes None RACM-ESRL None Yes MADE/SORGAM, MADE/SOA_VBS CB4 None Yes None CBMZ Yes Yes MOSAIC MOZART None Yes GOCART SAPRC99 None Yes MOSAIC NMHC9 None Yes None CRIMECH None Yes MOSAIC

Which is the preprocessor for WRF-Chem global models?

Fortran based preprocessor for creating fire emission inputs for WRF-Chem when running with plumerise and also for creating fire emission inputs for the CAM-Chem global models. The fire emissions inventory is based on the Fire Inventory from NCAR (FINN).