I’ve blogged about the predicted increase in precipitation associated with global warming. But Science Daily published an article in January of this year that stated: “Precipitation tends to increase over regions with ocean warming above the tropical mean (contours of warm colors in oC), and to decrease where ocean warming is below the tropical mean (contours of cool colors).” So there will be drought in parts of the world and more precipitation in others. So much for the idea that everyone worldwide will fry from global warming. Some will just get saturated and carried away by water. And the fact is floods kill more people than any other weather event.
The study outlined on Science Daily’s website was done by “a team of scientists headed by meteorologist Shang-Ping Xie at the University of Hawaii at Mānoa’s International Pacific Research Center that analyzed global model warming projections in models used by the IPCC.” It found that “ocean temperature patterns in the tropics and subtropics will change in ways that will lead to significant changes in rainfall patterns.” According to the article, two patterns stand out:
First, the maximum temperature rise in the Pacific is along a broad band at the equator. Already today the equatorial Pacific sets the rhythm of a global climate oscillation as shown by the world-wide impact of El Niño. This broad band of peak temperature on the equator changes the atmospheric heating in the models. By anchoring a rainband similar to that during an El Nino, it influences climate around the world through atmospheric teleconnections.
A second ocean warming pattern with major impact on rainfall occurs in the Indian Ocean and would affect the lives of billions of people. Overlayed on Indian Ocean warming for part of the year is what scientists call the Indian Ocean Dipole that occasionally occurs today once every decade or so. Thus, the models show that warming in the western Indian Ocean is amplified, reaching 1.5°C, while the eastern Indian Ocean it is dampened to around 0.5°C.
Xie predicts that if this pattern occurs, rainfall will dramatically shift over eastern Africa, India, and SE Asia, while droughts could happen in Indonesia and Australia.
Well, changes in rainfall patterns are certainly evident as worldwide flash floods are all over the news lately claiming lives and leaving thousands homeless. It looks like those IPCC models are more accurate than most detractors would like to admit:
In March floods in France claimed 45 lives
In the back hills of the French Riviera, flash floods recently claimed 25 lives.
Floods also occurred elsewhere in southern France
Myanmar and Bangledesh flash floods claimed 100 lives.
Flash floods in Brazil claim over 40 lives with 600 missing and 40,000 without shelter.
Poland’s floods claim 12 lives
Hungary, Czechia, and Slovakia also flooded along with Poland
There are huge floods in more than one province of China displacing 2.4 million people, killing over 210
Floods in Spain claim 2
And major floods in Nebraska, Oklahoma, Texas, Wyoming and Arkansas in the U.S. recently claimed close to 30 lives.
Check out the pictures of flood victims worldwide:
Worldwide flood reports: