Disaster Risk Reduction and climate change

Submitted by Andrew Maclean | published 30th Mar 2011 | last updated 6th Oct 2020
Please note: content is older than 5 years

Disaster Risk Reduction (DRR) is an approach that attempts to reduce people’s vulnerability to hazards through:

1. Ensuring that DRR is both a national and a local priority with a strong institutional basis for implementation;

2. Identifying, assessing, and monitoring disaster risks and enhancing early-warning systems;

3. Using knowledge, innovation, and education to build a culture of safety and resilience at all levels;

4. Reducing the underlying risk factors; and

5. Strengthening disaster preparedness for effective responses at all levels.

Because climate change is increasing the frequency and/or intensity of weather-related hazards for many communities, DRR is central to supporting many communities to adapt to climate change. However, not all DRR is about climate-related hazards (other hazards include earthquakes) and, equally, not all climate change impacts are hazards (such as saline intrusion exacerbated by rising sea levels, increasing temperature, unpredictable rainfall patterns, and changing seasons, all of which are more long-term, insidious, changes). There are also some areas where hazards won’t change (or may even decrease in frequency or intensity), such as flooding on the Zambezi in Mozambique. Making DRR relevant to climate change means that the way that climate change alters hazards must be understood and incorporated into programme design. For example, if it is known that climate change is likely to increase the severity of flooding threefold (so, for example, a ‘once-in-50-years flood’ will happen every 16 or 17 years), then the design of flood shelters (etc.) should take this into account. Where such precise climate change predictions are unavailable, then a ‘precautionary’ approach can be taken; in other words, look at the most severe climate change prediction and base programming decisions on that.

Source: Introduction to Climate Change Adaptation: A Learning Companion. Oxfam Disaster Risk Reduction and Climate Change Adaptation Resources