Question

 

 

Explain the characteristics of different extreme weather events.

16 Nov 2025
Answer :
Word Count : 1074
Extreme weather events are becoming increasingly frequent and intense due to the accelerating pace of climate change, and understanding their characteristics is crucial for assessing risks, preparing communities and designing effective adaptation strategies. These events arise from complex interactions within the atmosphere, oceans and land systems, and each type of extreme weather has distinct features that influence its impact on human life, ecosystems and infrastructure. One major extreme weather event is the heatwave, which is characterized by prolonged periods of abnormally high temperatures that exceed the typical range for a given region. Heatwaves occur when high-pressure systems trap warm air near the surface, preventing the circulation of cooler air. Their intensity, duration and geographic spread determine the scale of their impact, often leading to heat stress, dehydration, crop failure and increased energy demand. Night-time temperatures remain unusually high during heatwaves, which reduces the ability of human and natural systems to recover from daytime heat. Urban heat island effects further amplify temperatures in cities, making heatwaves particularly dangerous in densely populated regions. Another significant extreme weather event is drought, characterized by long-term deficits in precipitation that result in water scarcity for agriculture, ecosystems and human consumption. Droughts evolve slowly compared to other extreme events, but their impacts can be profound and long-lasting. They are associated with reduced soil moisture, declining groundwater levels and decreased river flow. Meteorological drought refers to periods of below-average rainfall, while agricultural drought affects soil moisture critical for crops. Hydrological drought occurs when rivers, lakes and reservoirs fall below normal levels. Socioeconomic drought emerges when water scarcity begins to affect human activities and livelihoods. Climate change intensifies droughts by altering precipitation patterns, increasing evaporation rates due to higher temperatures and making dry regions even drier. Floods represent another major category of extreme weather events, arising when water overflows onto normally dry land. They take several forms, including river floods, flash floods and coastal floods. River floods occur when excessive rainfall or snowmelt causes rivers to swell beyond their banks. Flash floods develop rapidly due to intense, short-duration rainfall that overwhelms drainage systems, often in hilly or urban areas. Their sudden onset makes them extremely dangerous, leaving little time for evacuation. Coastal floods result from storm surges associated with cyclones or hurricanes, where strong
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