Climate Change: Possible impacts and Solutions
Creators
- 1. Department of Oceanography, Techno India University, West Bengal, EM 4 Salt Lake, Sector V, Kolkata 700091, India.
- 2. Green Land Landscaping and Gardening, Seedling Growth Laboratory, 86130-000, Parana, Brazil
Description
Climate change has emerged as a multifaceted global crisis driven by both natural and anthropogenic forces.
This comprehensive article delineates the underlying mechanisms, consequences, and few innovative potential
mitigation pathways associated with climate change. This article highlights the contrasting dynamic nature of
short-term weather with the relative stability of long-term climate. However, this stability is now being
undermined by extensive human activities such as fossil fuel combustion, industrialization, and land-use
change, all of which have led to a dramatic 30% increase in atmospheric CO₂ since the industrial era. This
has elevated global temperatures by approximately 1°–2°F and intensified the greenhouse effect, marking a
discernible shift toward global warming. Natural drivers such as Milankovitch cycles, volcanic eruptions,
variations in solar output, and tectonic movements have also been discussed for their role in modulating the
Earth’s climate over geological timescales. For example, changes in Earth's orbital characteristics influence
glacial-interglacial cycles, while major volcanic eruptions can cause temporary global cooling through the
release of reflective aerosols. Additionally, long-term shifts in plate tectonics have historically influenced
oceanic currents and continental positioning, thereby altering global climate patterns. Anthropogenic drivers,
however, are of immediate concern. Key contributors include fossil fuel usage, deforestation, cement
production, and livestock farming. The CO₂ concentration has already exceeded 380 ppm and is projected to
surpass 560 ppm by 2100, which could result in a temperature rise between 1.4–5.6°C. Fossil fuel combustion
remains the most significant source of greenhouse gas emissions, while livestock contributes notably to
methane and nitrous oxide release, gases with much higher global warming potentials than CO₂. Land-use
changes also modify regional climates by altering albedo and hydrological cycles. The cascading impacts of
climate change are extensive. Rising sea levels, caused by thermal expansion and glacier melt, threaten coastal
and deltaic regions with inundation. Changes in precipitation patterns disrupt agriculture, leading to food
insecurity, particularly in vulnerable regions. Marine ecosystems face acidification and coral bleaching, while
biodiversity loss, disease vector shifts, and increased frequency of extreme weather events further exacerbate
the socio-economic burden. Populations in low-lying and economically disadvantaged areas are at heightened
risk, often becoming environmental refugees due to habitat loss and declining natural capital. To mitigate these
challenges, the study outlines eight strategic solutions, prioritized by their potential CO₂ offset. These include
the adoption of renewable energy (up to 12 Gt/year CO₂ offset), afforestation (up to 10 Gt/year), climate-
smart agriculture, and improvements in energy efficiency and transportation. Emerging solutions such as algal culture and reinforced policy and education frameworks are also critical, albeit with lower direct offset
capacities. Together, these strategies underscore the need for a comprehensive, interdisciplinary, and globally
coordinated response to climate change. This article presents an integrated view of the forces shaping climate
dynamics and offers a science-based framework for addressing one of the most pressing issues of this era
through both mitigation and adaptation.
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PJSE v.11 n.4 (1-11)Mitra & Gobato.pdf
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