As the world warms, one of the major issues during international climate talks is the need to compensate developing countries for the damages they sustain. Which countries should be eligible for the money? What unusual weather conditions were affected due to climate change?
A majority of countries signed the accord to establish a “loss and damage” fund. It could offer the opportunity for developing nations – who are in a significant way accountable for greenhouse gases to provide money for those in need of assistance to deal with the consequences of climate change.
A portion of the funds would help countries that are struggling to recover from the devastating effects of extreme weather. It could, for instance, be used to build hospitals and homes following a flood or to provide food or cash transfer assistance in the event of a hurricane.
Certain experts have suggested that the science behind “event attribution” could be used to determine how funds are allocated. Event attribution seeks to identify the cause of extreme weather events and, particularly, the case of climate change that is human-caused. It was a factor.
However, as the recent paper explains attr, the ablution of events is not yet a suitable method to determine compensation for countries at risk of climate change. A different approach is required.
People who were affected by the floods that hit Pakistan last year are provided with food aid. Rehan Khan/EPA
What is the attribution of an event?
Extreme weather phenomena are complicated and can be caused by many elements. The science behind the attribution of extreme events is to figure out whether changes in the climate or natural variations in the environment caused these weather phenomena.
A recent study showed that the torrential rainfall that caused the New Zealand floods in February was as much as 30 percent more in intensity due to the human impact on the global climate.
Attribution science is advancing rapidly. It’s becoming increasingly focused on extreme weather storms, which in the past were difficult to research. However, there’s no solid and reliable way to assess the costs and the impacts of extreme storms.
Read more: COP27: One Big Breakthrough but ultimately an Inadequate Response to the Climate Crisis
Why can’t we use it?
The study of event attribution draws upon observations of weather data as well as models of climate.
In most cases, two kinds of models of simulations for climate change are employed to simulate the greenhouse gas emissions from humans and those that do not. Comparing these two kinds of climate model simulations allows scientists to assess the impact of climate change on the probability and severity of extreme events.
However, the climate models are primarily designed to simulate the processes occurring within the ocean and in the atmosphere. They do not directly replicate the destruction caused by a severe weather phenomenon – like how many people die from a heatwave or loss of infrastructure due to the flood.
Climate models are mainly used to model processes that occur in the ocean and atmosphere. Shutterstock
To accurately simulate the impact of an extreme weather event, we must know the extent to which weather elements like rain and temperature cause damage. In certain situations, it is possible to be established. However, it’s a matter of high-quality information like hospital admissions, which aren’t available in all parts of the world.
Furthermore, the climate models aren’t well-equipped to simulate extreme events, like storms or severe winds. These kinds of instances are rare and usually occur over smaller regions. They are, therefore, more difficult to analyze than, say, an extreme heatwave that affects an entire area.
If “the event’s attribution and attribution heavily influenced loss and damage” funding decisions, then a country with a low income affected by a heatwave could get more help than a nation harmed by high winds or storms and the damages caused.
Furthermore, the process of attribution to events isn’t yet able to assess the extent to which climate change can cause damages that are associated with “compound” extreme instances.
Compound events are those when multiple extreme events happen at the same time in neighboring regions or succession within the same area. Examples of this include drought followed by a heatwave or rising sea levels, which can make the damage caused by tsunamis even more devastating.