Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. 24/7 Space News .




WEATHER REPORT
Too late to stop extreme heat waves: study
by Staff Writers
Paris, France (AFP) Aug 14, 2013


Climate change will trigger harsher and more frequent heat waves in the next 30 years regardless of the amount of Earth-warming carbon dioxide we emit, a study said Thursday.

But targets adopted today for curbing greenhouse gas emissions will determine whether the pattern stabilises thereafter, or grows even worse.

High temperatures and heat waves in the last decade are widely blamed on climate change that occurred over the last 50 years -- amounting to global warming of about 0.5 degrees Celsius (0.9 deg Fahrenheit), said the study in the journal Environmental Research Letters.

And they are predicted to become harsher and more frequent as the Earth continues to warm over the course of the 21st century.

Based on climate modelling, the study projects that extreme heat waves like those that hit the United States in 2012 and Australia in 2009 will by 2020 affect about 10 percent of total land area -- double today's figure.

By 2040, it would have quadrupled.

"Over the same period, more extreme events will emerge: five-sigma events which are now essentially absent will cover a small but significant fraction (about three percent) of the global land surface by 2040," said the study.

Five-sigma events are described as "unprecedented" heat waves by the researchers and extreme events as three-sigma.

"In the first half of the 21st century, these projections will occur regardless of the amount of CO2 emitted into the atmosphere," said a statement by the Institute of Physics which publishes the journal.

But what happens after 2040 can still be influenced by what we decide now.

"Under a low emission scenario, the number of extremes will stabilise by 2040, whereas under a high emission scenario, the land area affected by extremes will increase by one percent a year" until three-sigma heat waves affect 85 percent of the global land area by 2100 and five-sigma events about 60 percent.

A low emission scenario would entail limiting the concentration of greenhouse gases in the atmosphere to 490 parts per million of CO2 equivalent before 2010, followed by a decrease, whereas the worst case scenario involves no change to current trends.

UN members have adopted a target of curbing warming to a maximum 2 C (3.6 F), and are negotiating a new treaty on carbon emissions targets that must be signed in 2015 and enter into force by 2020.

The negotiations have been slow and the yearly rise in emissions has led some scientists to conclude that warming of 3 or 4 C (5.4-7.2 F) is probable by century's end.

.


Related Links
Weather News at TerraDaily.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





WEATHER REPORT
Heatwave kills four in Japan
Tokyo (AFP) Aug 11, 2013
A heatwave stifled Japan Sunday as the temperature topped 40 degrees Celsius (104 Fahrenheit ) in two cities, leaving at least four people dead over the weekend, officials and reports said. The Japan Meteorological Agency said the temperature reached 40.6 C in Kofu, 100 kilometres (60 miles) west of Tokyo, in mid-afternoon. The weather agency had warned early Sunday that the temperature ... read more


WEATHER REPORT
NASA Selects Launch Services Contract for OSIRIS-REx Mission

Environmental Controls Move Beyond Earth

Bad night's sleep? The moon could be to blame

Moon Base and Beyond

WEATHER REPORT
Opportunity Reaches Base of 'Solander Point'

NASA launches new Russian-language Mars website

Big ice may explain Mars' double-layer craters

Full Curiosity Traverse Passes One-Mile Mark

WEATHER REPORT
Space to become tourist destination in the future

HI-SEAS Mission Now in its Final Days

College of Law launches doctorate in space law

Study: Teleportation would have a slight time-to-transmit problem

WEATHER REPORT
China launches three experimental satellites

Medical quarantine over for Shenzhou-10 astronauts

China's astronauts ready for longer missions

Chinese probe reaches record height in space travel

WEATHER REPORT
ISS Boosting Biological Research in Orbit

Japanese Cargo Craft Captured, Berthed to ISS

Japanese Cargo Spacecraft Docks with ISS

NASA's Firestation on way to ISS

WEATHER REPORT
EUTELSAT spacecraft ready for integration to Ariane 5

Next Ariane 5 is readied to receive its dual-satellite payload

Russia to restart Proton rocket launches after crash

Japanese rocket takes supplies, robot to space station

WEATHER REPORT
Distant planet sets speed record by orbiting its star every 8.5 hours

Kepler planet hunter spacecraft is beyond repair: NASA

Astronomers Image Lowest-mass Exoplanet Around a Sun-like Star

New Explorer Mission Chooses the 'Just-Right' Orbit

WEATHER REPORT
Scientists create light/heat regulating window coating

Bubbles are the new lenses for nanoscale light beams

New insights into the polymer mystique for conducting charges

Toxicologist says NAS panel 'misled the world' when adopting radiation exposure guidelines




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement