Daily News Online
 

Thursday, 10 September 2009

News Bar

News: Estate crisis: If TUs, employers fail to agree: Govt to intervene ...        Political: Discipline a must during SP elections - President ...       Business: EU meeting to discuss matters: Top business delegation to lobby for GSP+ facility ...        Sports: Rugby Sevens team for Hong Kong ...

Home

 | SHARE MARKET  | EXCHANGE RATE  | TRADING  | SUPPLEMENTS  | PICTURE GALLERY  | ARCHIVES | 

dailynews
 ONLINE


OTHER PUBLICATIONS


OTHER LINKS

Marriage Proposals
Classified
Government Gazette

Arctic warming reverses cooling trend

An abrupt warming of the Arctic has reversed a cooling trend that began about 8,000 years ago, according to a study published Thursday which sheds light on the threat of rising sea levels and climate change.

Increased greenhouse gas emissions appear to have overridden the natural cooling caused by a wobble in the Earth's axis which has been gradually pulling the planet away from the Sun.

This wobble has cooled summer temperatures by an average of about 0.2 degrees Celsius per thousand years, the study published in the journal Science found.

But Arctic temperatures began to rise at the beginning of the 20th century even though the orbital cycle that produced the cooling continued.

The result was summer temperatures that were about 1.4 degrees Celsius warmer than they should have been by the year 2000, according to the study which mapped Arctic temperatures for every decade of the past 2,000 years.

Temperatures for four of the last five decades were among the highest on record. "This study provides us with a long-term record that reveals how greenhouse gases from human activities are overwhelming the Arctic's natural climate system," said co-author David Schneider of the Colorado-based National Center for Atmospheric Research. AFP

 

EMAIL |   PRINTABLE VIEW | FEEDBACK

www.lanka.info
Donate Now | defence.lk
www.apiwenuwenapi.co.uk
LANKAPUVATH - National News Agency of Sri Lanka
www.peaceinsrilanka.org
www.army.lk
www.news.lk
www.defence.lk

| News | Editorial | Business | Features | Political | Security | Sport | World | Letters | Obituaries |

Produced by Lake House Copyright 2009 The Associated Newspapers of Ceylon Ltd.

Comments and suggestions to : Web Editor