Tuesday, September 22, 2009

Greenhouse Gases Shifting Rain Band Northward

uwnews.org | Earth's most prominent rainfall feature creeping northward | University of Washington News and Information
June 30, 2009 | Science | Environment
Earth's most prominent rainfall feature creeping northward
Sandra Hines shines@u.washington.edu

The rain band near the equator that determines the supply of freshwater to nearly a billion people throughout the tropics and subtropics has been creeping north for more than 300 years, probably because of a warmer world, according to research published in the July issue of Nature Geoscience.

If the band continues to migrate at just less than a mile (1.4 kilometers) a year, which is the average for all the years it has been moving north, then some Pacific islands near the equator -- even those that currently enjoy abundant rainfall -- may be drier within decades and starved of freshwater by midcentury or sooner. The prospect of additional warming because of greenhouse gases means that situation could happen even sooner.

The findings suggest "that increasing greenhouse gases could potentially shift the primary band of precipitation in the tropics with profound implications for the societies and economies that depend on it," the article says.

"We're talking about the most prominent rainfall feature on the planet, one that many people depend on as the source of their freshwater because there is no groundwater to speak of where they live," says Julian Sachs, associate professor of oceanography at the University of Washington and lead author of the paper. "In addition many other people who live in the tropics but farther afield from the Pacific could be affected because this band of rain shapes atmospheric circulation patterns throughout the world."


Anonymous said...

Hi there! I just want to offer you a huge thumbs
up for the great information you've got here on this post. I'll be coming back to your web site
for more soon.

Feel free to surf to my web-site: cccam test line

Anonymous said...

Very good information. Lucky me I discovered your website by accident (stumbleupon).

I have book marked it for later!

My blog; web Site

Anonymous said...

Good day! Would you mind if I share your blog with my zynga group?
There's a lot of folks that I think would really appreciate your content. Please let me know. Thank you

Feel free to visit my web site :: Fast Cardshare

Anonymous said...

Woah! I'm really enjoying the template/theme of this blog. It's simple, yet
effective. A lot of times it's difficult to get that "perfect balance" between superb usability and visual appearance. I must say that you've done a fantastic job with this.

Additionally, the blog loads extremely quick for me on Safari.

Exceptional Blog!

Look into my blog post: install cccam dreambox

Anonymous said...

An outstanding share! I have just forwarded this onto
a colleague who was conducting a little homework on this.

And he in fact ordered me breakfast because I stumbled upon it for him.
.. lol. So allow me to reword this.... Thanks for the meal!
! But yeah, thanx for spending time to discuss this matter
here on your web page.

Feel free to visit my webpage ... Best Digiturk cardshare