Regionally, the most exposed nations are China, Bangladesh and Myanmar in Asia; western Sahel and southwestern nations in Africa; Brazil in South America; the eastern United States in North America; and the Mediterranean nations (including France, Italy and Spain), Russia and Scandinavia in Europe.
The study found that the climatic and socioeconomic variables together determine the international variations in socioclimatic risk.
"Patterns emerge that you wouldn't recognize from just looking at either climatic or socioeconomic conditions," Diffenbaugh said. "For example, China has a relatively moderate expected climate change. However, when you combine that with the fact that it has the second largest economy in the world, a substantial poverty rate and a large population, it creates one of the largest combined exposures on the planet. We see similar effects in other parts of the world, including India and the United States, which also have relatively moderate expected climate change. So it's where the socioeconomic and climatic variables intersect that is the key."
He added that the study does not address the absolute degree of impact or risk.
"This study illustrates exposure of one nation relative to another," Diffenbaugh said. "Thus, it is important to note that a country low on the relative scale could still face substantial risk."
The climate models used the A1B scenario, which is a standard greenhouse gas emissions scenario used by the IPCC. However, the authors calculated the exposures based on each degree of global warming, meaning that similar results could be expecte
|Contact: Elizabeth K. Gardner|