A long-term climate analysis covering the period from 1951 to 2020 highlights shifting environmental patterns across India. According to the findings, northwest India has undergone a notable transformation, with the area classified as a 'hot semi-arid zone' expanding significantly. Specifically, this zone grew from approximately 25% of the region's total area during the 1951–1980 period to roughly 33% during the 1991–2020 period. This indicates a trend toward hotter and drier conditions in the northern parts of the country.

Conversely, the study notes that southern India has experienced a trend toward wetter conditions during the same timeframe. These findings provide a comparative look at how different geographical regions within India are responding to long-term climatic changes. While the data provides a clear statistical shift in land classification, the study does not explicitly detail the specific ecological or agricultural consequences of these changes, nor does it provide a comprehensive breakdown of the meteorological drivers behind the regional divergence between the north and the south.