Climate change

Climate change is recognised as a global concern that needs to be taken into account in managing humanitarian disasters.

 

How the risk of natural disaster increases with climate change

Phenomenon Examples of major impact

Temperature: 

  • days and nights are generally warmer,
  • fewer cold days and nights, 
  • more frequent heatwaves
  • Reduced agricultural yields in warmer environments due to heat stress.
  • Increased heat-related mortality, particularly for the elderly, chronically sick, very young, and socially isolated.
  • Increased insect outbreaks and risk of bushfires.
  • Increased water demand and effects on water resources relying on snow melt.
  • Water quality problems and declining air quality in cities.

More rainfall:  

  • increasing frequency of heavy precipitation
  • Damage to crops and soil erosion.
  • Adverse effects on quality of surface and ground water.
  • Increased risk of deaths, injuries, and infectious, respiratory, and skin diseases.
  • Disruption of settlements, commerce, transport, and societies due to flooding.
  • Pressures on urban and rural infrastructure.
  • Loss of property.

Parched earth 

Less rainfall: 

  • increasing areas affected by drought.
  • Land degradation, lower yields, and crop damage.
  • Increased livestock deaths.
  • Increased risk of bush fires.
  • Food and water shortage contributing to malnutrition, and water- and food-borne diseases.
  • Migration.

Thunder and lightening 

Storms:  

  • increasing intensity  of tropical cyclones.
  • Damage to crops and trees.
  • Increased risk of deaths, injuries and disease spread through contaminated water or food.
  • Post-traumatic stress disorder.
  • Disruption by flood and high winds.
  • Withdrawal by private insurers of risk coverage in vulnerable areas.
  • Migration, loss of property.

Storm waves at sea 

Sea levels: 

  • increasing incidence of extremely high  sea levels.
  • Salinization of irrigation water and freshwater systems, and decreased freshwater availability
  • Increased risk of deaths by drowning in floods.
  • Migration-related health effects.
  • Costs of coastal protection versus relocation.
  • Potential for relocation of people and infrastructure.
  • Tropical-cyclone effects.

Adapted from : IPCC 2007 Working Group II, Summary for Policymakers, Red Cross/red Crescent Climate Guide

 

International agreements guiding action on climate change

  • The United Nations Framework Convention on Climate Change (UNFCCC) aims to: enable “ecosystems to adapt naturally to climate change; ensure that food production is not threatened, and; enable sustainable development.
  • The Kyoto Protocol (adopted in 2005) commits industrialized countries to reduce greenhouse gas (GHG) emissions in line with agreed and binding targets.
     

This page was last updated on 24 June 2011