normalize_orography.py

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#The code was authored by the following people:
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#Jaideep Pathak - NVIDIA Corporation
#Shashank Subramanian - NERSC, Lawrence Berkeley National Laboratory
#Peter Harrington - NERSC, Lawrence Berkeley National Laboratory
#Sanjeev Raja - NERSC, Lawrence Berkeley National Laboratory 
#Ashesh Chattopadhyay - Rice University 
#Morteza Mardani - NVIDIA Corporation 
#Thorsten Kurth - NVIDIA Corporation 
#David Hall - NVIDIA Corporation 
#Zongyi Li - California Institute of Technology, NVIDIA Corporation 
#Kamyar Azizzadenesheli - Purdue University 
#Pedram Hassanzadeh - Rice University 
#Karthik Kashinath - NVIDIA Corporation 
#Animashree Anandkumar - California Institute of Technology, NVIDIA Corporation

import h5py
import numpy as np

with h5py.File('/pscratch/sd/s/shas1693/data/era5/static/orography.h5','a') as f:
    
    orog = f['orog'][:]
    omean = np.mean(orog)
    print(omean)
    ostd = np.std(orog)
    print(ostd)

    orog -= omean
    orog /= ostd

    f['orog'][...] = orog

    f.flush()