#IMC: September 14 - 18 2025

Assessing Aridity Changes in the Cold Desert Ecosystem of Western Himalaya in Warming Climate

Assigned Session: FS 3.105: Modeling Transformations of Mountain Landscapes: Opportunities and Threats

Abstract ID: 3.13360 | Accepted as Talk | Talk/Oral | TBA | TBA

Pankaj Kumar (0)
Pankaj Kumar ((0) Department of Geography, University of Delhi, Delhi, 110007)

(0) Department of Geography, University of Delhi, Delhi, 110007
(1) Department of Geography, University of Delhi, University of Delhi, Delhi, 110007

(1) Department of Geography, University of Delhi, University of Delhi, Delhi, 110007

Categories: Cryo- & Hydrosphere
Keywords: Aridity

Categories: Cryo- & Hydrosphere
Keywords: Aridity

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West Himalayan cold deserts Lahaul-Spiti, Kinnaur and Ladakh are highly vulnerable to the changes that result from rise in temperatures globally. The high-altitude arid areas have limited precipitation and extreme temperature making them more sensitive to any variations in dryness. Therefore, understanding how aridity has changed over time in these regions will help assess the effects of climate change and formulate suitable conservation measures. A drought index, Aridity Index (AI), is computed as a ratio of annual precipitation (P) over potential evapotranspiration (PET). This study analyses trends in aridity seen in Indian cold deserts since 1901 till 2022 using AI. Data for this research was obtained from CRU TS v4.08 which is a dataset containing detailed high resolution monthly climatic information. The study area was classified into different climatic zones based on their AI values then looking at each season: pre-monsoon season, monsoon season, post-monsoon season, winter season and agricultural seaso

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