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Global Climate Change and Its Impacts

(V) Cultural and Social Impacts
Changes in extreme precipitation patterns are not merely an environmental issue, but
also involve cultural and social implications. In many traditional cultures, seasonal rainfall
patterns are closely tied to agricultural activities, forming unique festivals and customs.
However, as climatic variability increases, these traditional practices may gradually disap-
pear or undergo modifications. For instance, in India, traditional sowing festivals are often
linked to specific rainfall dates, but in recent years, due to unstable precipitation, scheduling
these activities has become increasingly challenging. Furthermore, frequent natural disasters
can trigger population migration, disrupt existing social structures, and lead to a series of so-
cial issues such as unequal access to education and intensified employment competition.
The alternation of heavy rainfall and drought, as one manifestation of extreme precip-
itation pattern changes, reveals the complexity and vulnerability of the water cycle system
under global climate change. Understanding its underlying causes and impacts on human
society and natural environments helps us better address future challenges, protect Earth’s
ecosystems, and safeguard human well-being. With deepening scientific research and techno-
logical advancements, we are confident in gradually mitigating the effects of these extreme
weather events and building a more sustainable future.

III. Changes in Intensity of Hurricanes and Other Storms

(I.) Rising Temperatures and Increased Ocean Surface Temperatures
The continuous rise in global temperatures has directly led to a significant increase in
Sea Surface Temperature (SST). The oceans absorb most of the excess heat caused by in-
creased greenhouse gases, resulting in a marked rise in water temperatures in tropical and
subtropical regions over recent decades. Higher SST provides more energy sources for hur-
ricanes and other tropical cyclones, promoting their development and intensification. Studies
indicate that for every 1°C increase in SST, the maximum wind speed of hurricanes may in-
crease by approximately 5% to 10%, demonstrating that warmer seawater is one of the criti-
cal drivers of hurricane intensification.
(2.) Increased Atmospheric Humidity
As global warming progresses, the atmospheric water vapor content also increases.
Higher humidity levels mean that during hurricane formation, more water vapor is available
to condense and release latent heat, further driving storm development. This latent heat re-
lease serves as one of the primary energy sources for tropical cyclones, making increased
atmospheric humidity conducive to enhancing the intensity of hurricanes and other tropical
cyclones. Additionally, a more humid atmospheric environment helps sustain and develop
stronger rainfall bands, amplifying both the intensity and spatial extent of torrential rains ac-
companying hurricanes.
(3) Changes in Ocean Heat Content Distribution
Changes in the distribution of ocean heat content have also significantly impacted the

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