CLIMATE CHANGE
2. CAUSES OF CLIMATE CHANGE
2.2. IMPACTS OF CLIMATE CHANGE
IMPACTS OF CLIMATE CHANGE
Climate change causes severe, interconnected environmental and socioeconomic impacts, including rising sea levels, extreme weather (heatwaves, droughts, floods), biodiversity loss, and ocean acidification. These effects disrupt food supplies, damage health, destroy infrastructure, and threaten ecosystems. Keynotes include:
Environmental Impacts (Physical System)
· Melting Ice & Sea Level Rise: Retreating glaciers and shrinking ice sheets in Greenland/Antarctica cause sea levels to rise, threatening coastal cities and increasing erosion.
· Extreme Weather Events: Increased frequency and intensity of hurricanes, severe storms, heatwaves, and droughts.
· Ocean Changes: Oceans absorbption of excess heat, leading to warmer water, coral bleaching, and ocean acidification, which devastates marine ecosystems.
· Water Scarcity: Reduced rainfall in arid regions and drying up of freshwater sources, worsening drought conditions.
Socioeconomic & Health Impacts
· Food Security: Crop failure due to droughts and heat reduces yield, leading to higher food prices, malnutrition, and famine.
· Health Risks: Increased heat-related deaths (up 70% in 20 years), waterborne diseases from floods, and wider spread of pests/diseases like malaria.
· Infrastructure & Economy: Coastal flooding, wildfires, and storms destroy housing and power grids, causing massive financial losses and impacting industries like tourism.
· Displacement: Sea-level rise and environmental degradation force population migration.
Vulnerability & Ecosystem Disruption
· Biodiversity Loss: Species cannot adapt fast enough to shifting habitats, risking ecosystem collapse.
· Inequity: Developing nations and marginalized communities with fewer resources are disproportionately impacted.