October 2024 was the hottest October for India since 1901. The India Meteorological Department (IMD) reported unprecedented mean and minimum temperatures. Delhi experienced its warmest October since 1951, with no rainfall recorded.
One factor contributing to these high temperatures is global warming. Over recent years, temperatures have risen globally. This trend has intensified in October 2024, affecting various countries, including India.
Western disturbances are vital for winter rainfall in northwest India. These are extra-tropical storms that originate in the Mediterranean. In October 2024, no western disturbances impacted northwest India. This absence led to a 76% decrease in rainfall compared to the norm.
Central India recorded its hottest October since 1901. Northwest India had its second-warmest October, while south peninsular India experienced its third-warmest. All regions in India broke minimum temperature records for the month.
October marks the transition from the rainy season to winter. This period often sees higher temperatures due to the retreating monsoon. Residual moisture from the monsoon increases humidity, which contributes to heat retention.
Higher humidity levels trap heat in the atmosphere. Water vapor acts as a greenhouse gas (GHG). Without rainfall or winds, heat accumulates, creating sultry conditions. This phenomenon was evident across India in October 2024.
Consequences of Climate Change
The lack of rainfall and high temperatures are linked to climate change. As the atmosphere warms, changes in global weather patterns occur. This disrupts normal rainfall patterns, exacerbating heat conditions.
India is not alone in experiencing record heat. Japan recorded its warmest October since 1898. Regions from West Asia to Japan, including India and Pakistan, are facing similar temperature extremes.
Moisture Levels and Heat Indices
For every 1°C rise in global temperatures, moisture levels increase by 7%. This amplifies greenhouse gases and raises heat indices. High temperatures combined with humidity can lead to humid heatwaves.
Future Projections
As global temperatures continue to rise, humid heatwaves may become more frequent. The accumulation of greenhouse gases in the atmosphere exacerbates this trend. The implications for weather patterns and human health are.
The extreme temperatures observed in October 2024 highlight the urgent need to address climate change. The interconnectedness of global weather patterns means that actions in one region can impact many others. These dynamics are essential for effective climate.
website: popularscientist.com
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