#!/usr/bin/env python
# Wenchang Yang (wenchang@princeton.edu)
# Fri Jul  5 11:29:41 EDT 2024
if __name__ == '__main__':
    import sys,os
    try:
        from misc.timer import Timer
        tt = Timer(f'[{os.getcwd()}] start ' + ' '.join(sys.argv))
    except:
        pass
import sys, os.path, os, glob, datetime
import xarray as xr, numpy as np, pandas as pd, matplotlib.pyplot as plt
#more imports
wython = '/tigress/wenchang/wython'
if wython not in sys.path: sys.path.append(wython); print('added to python path:', wython)
#from misc import get_kws_from_argv
import geoxarray
#
if __name__ == '__main__':
    try:
        tt.check('end import')
    except:
        pass
#
#start from here
get_nino34 = lambda x: x.rename(grid_xt='lon', grid_yt='lat').sel(lon=slice(360-170, 360-120), lat=slice(-5,5)).geo.fldmean() - 273.15
#ctl1990
print('CTL1990_v201905...')
years = range(1901,2000+1)
ifiles = [f'/tigress/wenchang/MODEL_OUT/CTL1990_v201905_tigercpu_intelmpi_18_576PE/POSTP/{year:04}0101.atmos_month.nc'
    for year in years]
da = xr.open_mfdataset(ifiles)['t_surf']
da_raw = da.pipe(get_nino34)
#ctl1990 FA
print('CTL1990_v201905_FA...')
ifiles = '/home/wenchang/scratch/FLOR/work/CTL1990_v201905_FA_tigercpu_intelmpi_18_576PE/POSTP/*0101.atmos_month.nc'
da = xr.open_mfdataset(ifiles)['t_surf']
da_fa = da.pipe(get_nino34)
time_start = da_fa.time[0].item()
time_stop = da_fa.time[-1].item()
"""
print(time_start)
print('to')
print(time_stop)
"""
#ctl1990 FA05
print('CTL1990_v201905_FA05...')
ifiles = '/home/wenchang/scratch/FLOR/work/CTL1990_v201905_FA05_tigercpu_intelmpi_18_576PE/POSTP/*0101.atmos_month.nc'
da = xr.open_mfdataset(ifiles)['t_surf']
da_fa05 = da.pipe(get_nino34)
#time_start = da_fa.time[0].item()
time_stop_fa05 = da_fa05.time[-1].item()
 
if __name__ == '__main__':
    from wyconfig import * #my plot settings
    fig,ax = plt.subplots(figsize=(8,3))
    da_raw.plot(ax=ax, label='CTL1990_v201905')
    da_fa.plot(ax=ax, label='CTL1990_v201905_FA')
    da_fa05.plot(ax=ax, label='CTL1990_v201905_FA05')
    
    ax.set_xlim(time_start, time_stop)
    ax.legend()
    ax.set_ylabel('Nino3.4 [degC]')
    ax.set_title(f'FA: {time_start.year}-{time_stop.year}; FA05: {time_start.year}-{time_stop_fa05.year}')
    
    #savefig
    if 'savefig' in sys.argv or 's' in sys.argv:
        figname = __file__.replace('.py', f'.png')
        if 'overwritefig' in sys.argv or 'o' in sys.argv:
            wysavefig(figname, overwritefig=True)
        else:
            wysavefig(figname)
 
    try:
        tt.check(f'**Done**')
    except:
        pass
    print()
    if 'notshowfig' in sys.argv or 'n' in sys.argv:
        pass
    else:
        if 'plt' in globals(): plt.show()