|
|
|
|
|
1st Zulqada 1435 | Friday, Aug 29, 2014
Science

2012 among top 10 warmest years on record

Wednesday, 16 January 2013
Comments(0)
Washington, January 16:

2012 was the ninth warmest of any year since 1880, continuing a long-term trend of rising global temperatures, NASA researchers say.

With the exception of 1988, the nine warmest years in the 132-year record all have occurred since 2000, with 2010 and 2005 ranking as the hottest years on record.

NASA’s Goddard Institute for Space Studies (GISS) in New York, which monitors global surface temperatures on an ongoing basis, released an updated analysis Tuesday that compares temperatures around the globe in 2012 to the average global temperature from the mid-20th century.

The comparison shows how Earth continues to experience warmer temperatures than several decades ago.

The average temperature in 2012 was about 58.3 degrees Fahrenheit (14.6 Celsius), which is 1.0 F (0.6 C) warmer than the mid-20th century baseline. The average global temperature has risen about 1.4 degrees F (0.8 C) since 1880, according to the new analysis.

Scientists emphasize that weather patterns always will cause fluctuations in average temperature from year to year, but the continued increase in greenhouse gas levels in Earth’s atmosphere assures a long-term rise in global temperatures.

Each successive year will not necessarily be warmer than the year before, but on the current course of greenhouse gas increases, scientists expect each successive decade to be warmer than the previous decade.

“One more year of numbers isn’t in itself significant,” GISS climatologist Gavin Schmidt said.

“What matters is this decade is warmer than the last decade, and that decade was warmer than the decade before. The planet is warming. The reason it’s warming is because we are pumping increasing amounts of carbon dioxide into the atmosphere,” Schmidt said.

Carbon dioxide is a greenhouse gas that traps heat and largely controls Earth’s climate. It occurs naturally and also is emitted by the burning of fossil fuels for energy. Driven by increasing man-made emissions, the level of carbon dioxide in Earth’s atmosphere has been rising consistently for decades.

The carbon dioxide level in the atmosphere was about 285 parts per million in 1880, the first year in the GISS temperature record. By 1960, the atmospheric carbon dioxide concentration, measured at NOAA’s Mauna Loa Observatory, was about 315 parts per million. Today, that measurement exceeds 390 parts per million.

While the globe experienced relatively warm temperatures in 2012, the continental US endured its warmest year on record by far, according to NOAA, the official keeper of US weather records.

“The US temperatures in the summer of 2012 are an example of a new trend of outlying seasonal extremes that are warmer than the hottest seasonal temperatures of the mid-20th century,” GISS director James E. Hansen said.

“The climate dice are now loaded. Some seasons still will be cooler than the long-term average, but the perceptive person should notice that the frequency of unusually warm extremes is increasing. It is the extremes that have the most impact on people and other life on the planet,” Hansen said.

The temperature analysis produced at GISS is compiled from weather data from more than 1,000 meteorological stations around the world, satellite observations of sea-surface temperature, and Antarctic research station measurements.

A publicly available computer program is used to calculate the difference between surface temperature in a given month and the average temperature for the same place during 1951 to 1980. This three-decade period functions as a baseline for the analysis.

The last year that experienced cooler temperatures than the 1951 to 1980 average was 1976.

The GISS temperature record is one of several global temperature analyses, along with those produced by the Met Office Hadley Centre in the United Kingdom and the National Oceanic and Atmospheric Administration’s National Climatic Data Center in Asheville, N.C. These three primary records use slightly different methods, but overall, their trends show close agreement.

ANI

Latest News

Salman Khan All Set to Meet His EX Somy Ali!

Salman Khan is awaiting this break after the busy schedule that he had for his super duper hit Kick. ...

Politicians should quit active posts at 70 years, Janardan Dwivedi

Stoking a fresh controversy, Senior Congress leader Janardan Dwivedi on Thursday said people in poli ...

Government to discuss role of agents in the defence deals

Government is likely to discuss the issue of engagement of agents by foreign firms in defence deals ...

Related News

NASA's Mars rocket to launch on maiden voyage in 2018

NASA's most powerful deep-space rocket to date - the USD 7 billion Space Launch System (SLS) - desig ...

Girl-gang members at greater risk of unprotected sex

Young girls who join gangs to find their lost freedom are at a greater risk of unprotected sex with ...

Pandas may fake pregnancies to lead better lives

A Chinese expert has claimed that pandas fake pregnancies to have a better lifestyle. Recently ex ...

Post new comment

CAPTCHA
This question is for testing whether you are a human visitor and to prevent automated spam submissions.
Image CAPTCHA
Copy the characters (respecting upper/lower case) from the image.

Rs. 27590 (Per 10g)

Opinion Poll
Do you think KCR would continue celebrating all national events at Golconda Fort beginning from Independence Day?
YesNoCan't say

Comments >>

Matrimony | Photos | Videos | Search | Polls | Archives | Advertise | Letters

© The Siasat Daily, 2012. All rights reserved.
Jawaharlal Nehru Road, Abids, Hyderabad - 500001, AP, India
Tel: +91-40-24744180, Fax: +91-40-24603188
contact@siasat.com