Reference Article

from Wikipedia, the free encyclopedia

Effects of global warming

The predicted effects of global warming are many and various, both for the environment and for human life.

There is some speculation that global warming could, via a shutdown or slowdown of the thermohaline circulation, trigger localised cooling in the North Atlantic and lead to cooling, or lesser warming, in that region.

A northwards branch of the gulf stream, the North Atlantic Drift, is part of the thermohaline circulation (THC), transporting warmth further north to the North Atlantic, where its effect in warming the atmosphere contributes to warming Europe.

Increasing temperature is likely to lead to increasing precipitation but the effects on storms are less clear.

Extratropical storms partly depend on the temperature gradient, which is predicted to weaken in the northern hemisphere as the polar region warms more than the rest of the hemisphere.

The Intergovernmental Panel on Climate Change (IPCC) third annual assessment report "Climate Change 2001" stated "there is no compelling evidence to indicate that the characteristics of tropical and extratropical storms have changed."

There is, however, limited evidence from a relatively short time period that storm strength is increasing, such as the Emanuel (2005) "power dissipation index" of hurricane intensity.

Worldwide, the proportion of hurricanes reaching categories 4 or 5 -- with wind speeds above 56 metres per second -- has risen from 20% in the 1970s to 35% in the 1990s.Precipitation hitting the US from hurricanes increased by 7% over the twentieth century.

A substantially higher risk of extreme weather does not necessarily mean a noticeably greater risk of slightly-above-average weather.

However, the evidence is clear that severe weather and moderate rainfall are also increasing.

Note: This article excerpts material from the Wikipedia article "Effects of global warming", which is released under the GNU Free Documentation License.

See the following related content on ScienceDaily:


Related Videos

last updated on 2014-12-22 at 5:28 pm EST

Leading Global Warming "Skeptic" Changes Position

Leading Global Warming "Skeptic" Changes Position

CBC (Nov. 4, 2011) A US self-described global warming "skeptic" has just completed a major global temperature study, concluding the world has been warming by one degree celsius since the mid-1950s.
Powered by NewsLook.com
Raj Pachauri: Climate Change Causes Huge Species Loss

Raj Pachauri: Climate Change Causes Huge Species Loss

FORA.tv (July 11, 2012) Rajendra Pachauri shows forecasts the possible effects of global warming, and frames climate change in the context of global security.
Powered by NewsLook.com
UN Panel Warns About Climate Change

UN Panel Warns About Climate Change

AP (Mar. 31, 2014) A U.N. panel of scientists issued a stark warning on Monday about the effects of global warming as they concluded a week-long meeting in Japan. (March 31) Video provided by AP
Powered by NewsLook.com
Trick-or-Treating Banned Because of Polar Bears

Trick-or-Treating Banned Because of Polar Bears

Buzz60 (Oct. 21, 2014) Mother Nature is pulling a trick on the kids of Arviat, Canada. As Mara Montalbano (@maramontalbano) tells us, the effects of global warming caused the town to ban trick-or-treating this Halloween. Video provided by Buzz60
Powered by NewsLook.com

Related Stories


Share This



Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins