Ocean Acidification: The Climate Change Buffer, But another Environmental Disaster in the Making - PowerPoint PPT Presentation

View by Category
About This Presentation
Title:

Ocean Acidification: The Climate Change Buffer, But another Environmental Disaster in the Making

Description:

After attending the talk "Ocean Acidification - The Other CO2 Problem" here at COP19 in Warsaw, it is quite clear that there is another significant issue concerning climate change. About one-quarter of the human-made CO2 emissions have been absorbed by oceans creating yet another environmental problem of global concern. We are changing seawater chemistry through a type of carbon sequestration. This creates a potential environmental disaster in the ocean and delays the inevitable temperature rise associated with our CO2 emissions. Starting with the impact from the ocean's perspective -- CO2 is absorbed and dissolved in water which forms carbonic acid. – PowerPoint PPT presentation

Number of Views:121
Slides: 7
Provided by: mainenorris
Category: Other

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Ocean Acidification: The Climate Change Buffer, But another Environmental Disaster in the Making


1
Ocean Acidification The Climate Change Buffer,
But another Environmental Disaster in the Making
  • http//www.huffingtonpost.com/greg-foy/ocean-acidi
    fication-the-c_b_4310443.html

2
  • After attending the talk "Ocean Acidification -
    The Other CO2 Problem" here at COP19 in Warsaw,
    it is quite clear that there is another
    significant issue concerning climate change.
    About one-quarter of the human-made CO2 emissions
    have been absorbed by oceans creating yet another
    environmental problem of global concern. We are
    changing seawater chemistry through a type of
    carbon sequestration. This creates a potential
    environmental disaster in the ocean and delays
    the inevitable temperature rise associated with
    our CO2 emissions. Starting with the impact from
    the ocean's perspective -- CO2 is absorbed and
    dissolved in water which forms carbonic acid.

3
  • Carbonic acid releases the acidic proton,
    increasing acidity and decreasing the amount of
    carbonate ion, tipping the balance of the
    "saturation state" of calcium carbonate -- the
    building block for shells. These changes in the
    ocean water chemistry spell disaster not just for
    shellfish (molluscs) but for the entire marine
    ecosystem. Acidification threatens yields of
    seafood for communities that rely on the oceans
    for their economy and to feed their own people.
    The resulting lower pH is also dissolving coral
    reefs which provide a habitat for close to 25
    percent of worldwide marine species

4
A few quick facts concerning acidification from
the Ocean Acidification International
Coordination Center (OA-ICC)
  • The acid level in the ocean is changing at a
    pace that is a hundred times faster than any time
    during the last 20million years
  • There has been an increase of more than 30
    percent acidity since the beginning of the
    Industrial Revolution
  • If CO2 emissions continue at the current rate,
    the acidity rise could reach 150 percent by the
    end of the century
  • At the current rate of acidification, the polar
    oceans could actually begin to dissolve the
    shells of living organisms within decades
  • Many coral reefs could disappear by the middle
    of this century
  • Three billion people rely on the oceans for
    their animal protein intake, and acidification
    threatens their food security

5
  • There is hope though. The IPCC started to
    recognize ocean acidification in 2007, and RIO
    20 called for significant initiatives to
    mitigate the effect. In addition, GOA-ON, the
    Global Ocean Acidification Observing Network is
    trying to get a better handle on the extent of
    acidification worldwide. In Mexico in 2010 at
    COP16, the Cancun Agreements barely mentioned
    Ocean Acidification and identified it as a "slow
    moving event". We now recognize that the
    atmosphere and the ocean are inexorably linked.

6
  • Read more
  • http//crowncapitalmng.livejournal.com/
  • http//crowncapitalecomngment.blogspot.com/
  • http//www.facebook.com/pages/Crown-Capital-Eco-Ma
    nagement/341901269238610
About PowerShow.com