Navigating through Climatic Oscillations and Atmospheric Drift using Temperature Indices on Historical Data for a Lesser Himalayan Region

The current work appraises the temporal and spatial discrepancies of temperature for the historical data (1951-2020) for the Lesser Himalayan Region. The temperature data has been obtained from the Indian Metrological Department (IMD), Pune. The 70-year data has been analysed using the temperature indices recommended by experts on Climate Change Detection and Indices (ETCCDI) and Expert Team on Sector-Specific Climate Indices (ET-SCI) for the divergence in the temperature using extreme climate indices. These indices will assimilate the climate prognosis and foreseen weather-space-relevant atmospheric disruptions leading to outright know-how of alterations in the temperature pattern in the developing Lesser Himalayan Region over a century. The study focuses on understanding the progression of dynamic temperature changes using certain key indices such as Summer days, Tropical Nights, Warm nights/days, and cold nights/days to detect patterns and trends in temperature behaviour across regions. The findings highlight the region’s susceptibility to rising temperature trends, a growing frequency of extreme heat events and their connection with extreme events and climate anomalies. The results will attempt to find out the effect of dynamic temperature changes occurring spatially and temporally in the region professing the impact of alterations in temperature patterns and will also figure out the atmospheric dynamics robustly occurring under what circumstances and time of the year and at what specific spots. Ultimately, the research contributes to a comprehensive understanding of temperature variability and its implications for the Lesser Himalayan Valley, offering a strong base for focused mitigation and adaptation strategies in the era of abrupt climate change and rapid urbanization.