Skip to content
Hindi News, हिंदी समाचार, Samachar, Breaking News, Latest Khabar – Pratirodh

Hindi News, हिंदी समाचार, Samachar, Breaking News, Latest Khabar – Pratirodh

Primary Menu Hindi News, हिंदी समाचार, Samachar, Breaking News, Latest Khabar – Pratirodh

Hindi News, हिंदी समाचार, Samachar, Breaking News, Latest Khabar – Pratirodh

  • Home
  • Newswires
  • Politics & Society
  • The New Feudals
  • World View
  • Arts And Aesthetics
  • For The Record
  • About Us
  • Featured

Arctic Heating Up 4 Times Faster Than Global Warming: Study

Jul 9, 2022 | Pratirodh Bureau

The Arctic influences the world's climate and weather, and the melting of the Greenland ice sheet causes sea-level rise that threatens many coastal communities

The Arctic is heating up more than four times faster than the rate of global warming, according to a new analysis of observed temperatures.

The trend has stepped upward steeply twice in the last 50 years, a finding missed by all but four of 39 climate models, the researchers said.

The study does not pinpoint a cause for these relatively sudden increases, but the researchers speculate that contributing causes are probably sea ice and water vapour feedback combined with changes in how atmospheric and oceanic heat move into the Arctic.

“Thirty years is considered the minimum to represent climate change,” said Petr Chylek, a physicist and climate researcher at Los Alamos National Laboratory, US, and lead author of the study published in the journal Geophysical Research Letters.

“We decreased the time interval to 21 years. At that smaller time scale, and contrary to previous investigations that found the Arctic amplification index increases in a smooth way, we observed two distinct steps, one in 1986 and a second one in 1999,” Chylek said.

Because the decade-by-decade episodic trend identified by Chylek and his collaborators affects global weather and sea levels, accurately projecting future climate change in smaller timeframes is essential for planning any mitigation of its impacts and developing adaptation strategies.

The researchers noted that the Arctic influences the world’s climate and weather, and the melting of the Greenland ice sheet causes sea-level rise that threatens many coastal communities.

The amplification index in the study is the ratio of an Arctic 21-year temperature trend versus an overall global 21-year temperature trend, they said.

The study calculated the Arctic amplification index to be greater than 4 within the early decades of the 21st century, four times faster than the global mean and considerably more rapid than previous published research had determined using 30- to 40-year time intervals.

These earlier studies pegged the index between 2 and 3, the researchers said.

From 39 climate-change models in the widely used CMIP6 collection of the Coupled Model Intercomparison Project, the research team found four that reproduced the first step reasonably well around 1986, but none that reproduced the second step in 1999.

CMIP is an international collaborative of climate models using a shared set of parameters. CMIP6 has been used to create the recent Intergovernmental Panel on Climate Change Assessment Report.

“We attributed the first step to increasing concentrations of carbon dioxide and other pollutants in the atmosphere, because several models do it correctly, but the second step we think is due to climate variability because none of the models can reproduce the second step,” Chylek said.

Short-term climate variability is typically undetected by climate models with their 30-year-plus-long timescales, the researchers said.

Future increases in the Arctic amplification index are likely to be smaller as the temperature difference between the Arctic and the tropics decreases, they said.

Tags: Climate Change, Coupled Model Intercomparison Project, global warming, Pratirodh, the Arctic

Continue Reading

Previous People Being Divided For Political Opportunism, Says Amartya Sen
Next On Shinzo Abe Assassination, TMC’s ‘Agnipath’ Reference

More Stories

  • Featured

In His Court Battle With Twitter, Musk Refers To Govt Of India

1 day ago Pratirodh Bureau
  • Featured

High Uranium In Groundwater In Bihar Leaves Authorities Worried

1 day ago Pratirodh Bureau
  • Featured

19,400 New COVID-19 Cases, 49 Deaths

1 day ago Pratirodh Bureau

Recent Posts

  • In His Court Battle With Twitter, Musk Refers To Govt Of India
  • High Uranium In Groundwater In Bihar Leaves Authorities Worried
  • 19,400 New COVID-19 Cases, 49 Deaths
  • 77 Years On, Hiroshima Prays For Peace, Fears New Arms Race
  • Priyanka Stages Sit-In Over Price Rise, Detained
  • Saving Lives, One ‘Stray’ Animal At A Time
  • 1.29 Cr Votes Cast For NOTA In Last 5 Yrs: ADR
  • Allahabad HC Rejects Kappan’s Bail Plea
  • Social Media Platforms Pose New Challenges To Child Safety: NCPCR
  • We Are Not Afraid Of PM Modi: Rahul Gandhi
  • Tikait Says Campaign Against Agnipath Scheme To Start From Aug 7
  • Kashmir’s Flood Management Plan Faces Flak
  • This Helped CIA Launch A ‘Precision Strike’ On Al Qaeda Chief
  • 20 Sites To Get ‘National Importance’ Tag: Govt
  • ‘As Real Freedom Eludes Them, Farmers Say No To Tiranga Event’
  • The Ongoing War On Human Rights In Af
  • Global Forest Area Decreased By Over 60% In Six Decades: Study
  • ‘Country Battling Epidemic Of Unemployment’
  • Solar Can Help Cut Costs, Emissions Further
  • Who Was Al-Zawahiri & Why Did US Kill Him?

Search

Main Links

  • Home
  • Newswires
  • Politics & Society
  • The New Feudals
  • World View
  • Arts And Aesthetics
  • For The Record
  • About Us

Related Stroy

  • Featured

In His Court Battle With Twitter, Musk Refers To Govt Of India

1 day ago Pratirodh Bureau
  • Featured

High Uranium In Groundwater In Bihar Leaves Authorities Worried

1 day ago Pratirodh Bureau
  • Featured

19,400 New COVID-19 Cases, 49 Deaths

1 day ago Pratirodh Bureau
  • Featured

77 Years On, Hiroshima Prays For Peace, Fears New Arms Race

1 day ago Pratirodh Bureau
  • Featured

Priyanka Stages Sit-In Over Price Rise, Detained

2 days ago Pratirodh Bureau

Recent Posts

  • In His Court Battle With Twitter, Musk Refers To Govt Of India
  • High Uranium In Groundwater In Bihar Leaves Authorities Worried
  • 19,400 New COVID-19 Cases, 49 Deaths
  • 77 Years On, Hiroshima Prays For Peace, Fears New Arms Race
  • Priyanka Stages Sit-In Over Price Rise, Detained
Copyright © All rights reserved. | CoverNews by AF themes.