e360 digest


24 Sep 2013: Major Wind and Rain Belts
Could Shift North as Earth Warms

A study of warming at the end of the last Ice Age indicates that future warming caused by the burning of fossil fuels will likely shift the planet's rain and wind belts northward, say researchers at Columbia University's Lamont-Doherty Earth Observatory. Regions that are already dry — including the western U.S., western China, and the Middle East — could grow drier, while equatorial Africa and monsoonal Asia may become wetter. An examination of data such as polar ice cores and ocean sediments shows that as the last Ice Age ended 15,000 years ago, northward shifts in the tropical rain belt and mid-latitude jet stream occurred as the temperature gradient between the northern and southern hemispheres increased. That sharper gradient came about because the land mass-dominated northern hemisphere warmed faster than the ocean-dominated southern hemisphere, according to the study, published in the Proceedings of the National Academy of Sciences. Researchers say a similar pattern could develop in years to come as the northern hemisphere continues to warm faster than the southern hemisphere. Although there is not yet clear evidence of increasing circulation in the North Atlantic Ocean or strengthening monsoons in Asia, those effects could begin to emerge as air pollution — particularly sulfate aerosols, which can temporarily mask some effects of climate change — declines in the northern hemisphere.

Email      Recommend     Tweet     Stumble Upon     Digg     Share    


Yale
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
.

SEARCH e360



Donate to Yale Environment 360
Yale Environment 360 Newsletter

CONNECT

Twitter: YaleE360
e360 on Facebook
Donate to e360
View mobile site
Bookmark
Share e360
Subscribe to our newsletter
Subscribe to our feed:
rss


ABOUT

About e360
Contact
Submission Guidelines
Reprints

E360 en Español

Universia partnership
Yale Environment 360 articles are now available in Spanish and Portuguese on Universia, the online educational network.
Visit the site.


DEPARTMENTS

Opinion
Reports
Analysis
Interviews
Forums
e360 Digest
Podcasts
Video Reports

TOPICS

Biodiversity
Business & Innovation
Climate
Energy
Forests
Oceans
Policy & Politics
Pollution & Health
Science & Technology
Sustainability
Urbanization
Water

REGIONS

Antarctica and the Arctic
Africa
Asia
Australia
Central & South America
Europe
Middle East
North America

e360 PHOTO GALLERY

“Peter
Photographer Peter Essick documents the swift changes wrought by global warming in Antarctica, Greenland, and other far-flung places.
View the gallery.

e360 MOBILE

Mobile
The latest
from Yale
Environment 360
is now available for mobile devices at e360.yale.edu/mobile.

e360 VIDEO

Warriors of Qiugang
The Warriors of Qiugang, a Yale Environment 360 video that chronicles the story of a Chinese village’s fight against a polluting chemical plant, was nominated for a 2011 Academy Award for Best Documentary (Short Subject). Watch the video.


header image
Top Image: aerial view of Iceland. © Google & TerraMetrics.

e360 VIDEO

Colorado River Video
In a Yale Environment 360 video, photographer Pete McBride documents how increasing water demands have transformed the Colorado River, the lifeblood of the arid Southwest. Watch the video.

 

OF INTEREST



Yale