Warming in high altitude Himalayas

  • IASbaba
  • February 11, 2022
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Warming in high altitude Himalayas

Part of: Prelims and Mains GS-III: Climate Change

In News: A recent study has shown that water vapour exhibits a positive radiative effect at the top of the atmosphere (TOA), suggesting an increase in overall warming in the High Altitude Himalayas due to it.

  • The precipitable water vapor (PWV) is one of the most rapidly varying components in the atmosphere and is mainly accumulated in the lower troposphere. 
  • Due to the large variability in space and time, mixing processes and contribution to a series of heterogeneous chemical reactions, as well as sparse measurement networks, especially in the Himalayan region, it is difficult to accurately quantify the climatic impact of PWV over space and time.
  • Moreover, aerosol-cloud-precipitation interactions over this region, which are one of the most climatic-sensitive regions, are poorly understood, apparently due to a lack of proper observational data.

The researchers assessed the combination of aerosols and water vapour radiative effects over the Himalayan range that is specifically important for regional climate and highlighted the importance of water vapour as a key greenhouse gas and climate forcing agent over the Himalayan region.

News Source: PIB

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