Figure 5

The plot shows the latitudinal variations of observed water vapor δ18O, D and d-excess data compared with that of IsoGSM model data. The IsoGSM data are obtained for three different time scales: daily mean, 6 hourly and the climatological mean obtained for 34 years [from 1979 to 2013]. The time corresponding to 18:00 hours in the IsoGSM 6 hourly dataset are used here as it is the closest to our sampling time of water vapor.