Next ice age not likely before 1,500 years

Author Topic: Next ice age not likely before 1,500 years  (Read 2026 times)

Offline poppy siddiqua

  • Full Member
  • ***
  • Posts: 233
    • View Profile
Next ice age not likely before 1,500 years
« on: February 07, 2012, 03:46:01 PM »
High levels of carbon dioxide emissions in the atmosphere mean the next ice age is unlikely to begin for at least 1,500 years, an article in the journal Nature Geoscience said on Monday.

Concentrations of the main gases blamed for global warming reached record levels in 2010 and will linger in the atmosphere for decades even if the world stopped pumping out emissions today, according to the U.N.'s weather agency.

An ice age is a period when there is a long-term reduction in the earth's surface and atmospheric temperature, which leads to the growth of ice sheets and glaciers.

There have been at least five ice ages on earth. During ice ages there are cycles of glaciation with ice sheets both advancing and retreating.

Officially, the earth has been in an interglacial, or warmer period, for the last 10,000 to 15,000 years, and estimates vary on how long such periods last.

"(Analysis) suggests that the end of the current interglacial (period) would occur within the next 1,500 years, if atmospheric CO2 concentrations do not exceed (around) 240 parts per million by volume (ppmv)," the study said.

However, the current carbon dioxide concentration is of 390 ppmv, and at that level an increase in the volume of ice sheets would not be possible, it added.

The study based on variations in the earth's orbit and rock samples was conducted by academics at Cambridge University, University College London, the University of Florida and Norway's University of Bergen.

The causes of ice ages are not fully understood but concentrations of methane and carbon dioxide in the atmosphere, changes in the earth's orbit around the sun, and the movement of tectonic plates are all thought to contribute.

The world is forecast to grow hotter as greenhouse gases continue to rise, increasing threats such as extreme weather events and sea level rise.

Scientists have warned that global temperature rise should be limited to within 2 degrees Celsius to avoid the worst effects of climate change but delays in curbing emissions growth are putting the planet at risk.
Poppy Siddiqua
Lecturer, ETE

Offline jas_fluidm

  • Faculty
  • Sr. Member
  • *
  • Posts: 291
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #1 on: March 14, 2012, 05:57:51 PM »
nice post

Offline arefin

  • Hero Member
  • *****
  • Posts: 1173
  • Associate Professor, Dept. of ETE, FE
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #2 on: March 16, 2012, 11:48:42 PM »
Thanks for sharing
“Allahumma inni as'aluka 'Ilman naafi'an, wa rizqan tayyiban, wa 'amalan mutaqabbalan”

O Allah! I ask You for knowledge that is of benefit, a good provision and deeds that will be accepted. [Ibne Majah & Others]
.............................
Taslim Arefin
Assistant Professor
Dept. of ETE, FE
DIU

Offline Mashud

  • Full Member
  • ***
  • Posts: 237
  • Ideal man
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #3 on: June 20, 2012, 11:26:41 AM »
Good information.

Offline Mohammad Salek Parvez

  • Faculty
  • Sr. Member
  • *
  • Posts: 387
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #4 on: July 18, 2012, 09:57:49 AM »
nice post.
:SP:

Offline rumman

  • Hero Member
  • *****
  • Posts: 1018
  • DIU is the best
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #5 on: July 18, 2012, 04:21:52 PM »
Informative post. Thanks for sharing.
Md. Abdur Rumman Khan
Senior Assistant Registrar

Offline adnanmaroof

  • Full Member
  • ***
  • Posts: 104
  • Test
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #6 on: October 09, 2012, 08:02:16 PM »
Thanks for sharing !!!!!!!!!!!

Offline Tanvir Ahmed Chowdhury

  • Hero Member
  • *****
  • Posts: 517
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #7 on: October 10, 2012, 01:44:12 PM »
Well Post. Thanks for Sharing
Tanvir Ahmed Chowdhury

Assistant Professor
Department of Textile Engineering
Faculty of Engineering
Daffodil International University

Offline adnanmaroof

  • Full Member
  • ***
  • Posts: 104
  • Test
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #8 on: October 22, 2012, 12:47:40 PM »
we really need to find ways to overcome the problems of CO2. New ideas & inventions are encouraged to find the solutions.

Offline fahmidasiddiqa

  • Full Member
  • ***
  • Posts: 229
  • Test
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #9 on: November 17, 2012, 04:36:38 PM »
we have to be careful about our environment

Offline tariq

  • Jr. Member
  • **
  • Posts: 81
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #10 on: December 19, 2012, 04:05:31 PM »
"if atmospheric CO2 concentrations do not exceed (around) 240 parts per million by volume (ppmv)," the study said. "-- but its already 390ppm... so confused about it.
Tariq Mahbub
Senior Lecturer
Dept. of Textile Engineering
Daffodil International University

Offline fahmidasiddiqa

  • Full Member
  • ***
  • Posts: 229
  • Test
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #11 on: January 13, 2013, 10:44:27 AM »
nice one...

Offline adnanmaroof

  • Full Member
  • ***
  • Posts: 104
  • Test
    • View Profile
Re: Next ice age not likely before 1,500 years
« Reply #12 on: January 26, 2013, 02:49:53 PM »
its a big matter of concern. People shall be highly alerted for such adverse effect on earth.