Examples are found in the template files.
Before beginning, be sure to read the GES-DISC how-to which explains the method of entering your credentials for data access!
The second step is to find the variables of interest in:
https://gmao.gsfc.nasa.gov/pubs/docs/Bosilovich785.pdf
Note that there are often both instantaneous fields and time-averaged fields for the same variable.
The collection name and the esdt are in the name of each section of that document, e.g. collection = tavg1_2d_flx_Nx and esdt = M2T1NXFLX. However, the actual esdt directory on the server also has a suffix, that can be verified on the servers themself:
https://goldsmr4.gesdisc.eosdis.nasa.gov/data/ https://goldsmr5.sci.gsfc.nasa.gov/data/
so we set esdt_dir = M2T1NXFLX.5.12.4
These information can be given to the various functions as a dictionary, or some default values can be set in merra2_variables.py. CF Standard Names can be found at http://cfconventions.org/standard-names.html
- Chunk sizes are currently set rather arbitrarily.
- Naming files is forced to some common cases, not fully customizable.
- Constant fields require manually downloading a file first.
- Daily NetCDF functions are slightly modified copies of subdaily functions, should be combined into one with calls to time frequency dependent subfunctions.
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