Chat or Talk in the INReview Discussion Forum Chat or Talk in the INReview Discussion Forum
 
register chat members links refer search home
INReview INReview > Hot Topics > Global Warming & Climate Change > CO2 change the water of ocean to acid http://www.lookchem.com/cas-324/3244-88-0.html
Search this Thread:
  Print Version | Email Page | Bookmark | Subscribe to Thread
Author
Thread Post New Thread   
chelsea8611
Rookie

offline
Registered: Aug 2008
Local time: 05:34 PM
Location: china
Posts: 1

CO2 change the water of ocean to acid http://www.lookchem.com/cas-324/3244-88-0.html post #1  quote:



CO2 change the water of ocean to acid

The world's oceans are slowly getting more acidic, say scientists.

The researchers from California say the change is taking place in response to higher levels of carbon dioxide in the atmosphere.

The lowering of the waters'pH value is not great at the moment but could pose a serious threat to current marine life if it continues, they warn.

Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature.

Increasing use of fossil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater. Once in the water, it reacts to form carbonic acid.

Scientists believe that the oceans have already become slightly more acidic over the last century.

But these researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change.
CO2 change the water of ocean to acid

"This level of acidity will get much more extreme in the future if we continue releasing CO2 into the atmosphere," said Dr Caldeira.

"And we predicted amounts of future acidity that exceed anything we saw over the last several hundred million years, apart from perhaps after rare catastrophic events such as asteroid impacts."

If carbon dioxide release continues unabated, ocean pH could be reduced by as much as 0.77 units, the authors warn.

It is not absolutely clear what that means for marine life, however.

Most organisms live near the surface, where the greatest pH change would be expected to occur, but deep-ocean lifeforms may be more sensitive to pH changes.

Coral reefs and other organisms whose skeletons or shells contain calcium carbonate may be particularly affected, the team speculate. They could find it much more difficult to build these structures in water with a lower pH.

In recent years some people have suggested deliberately storing carbon dioxide from power stations in the deep ocean as a way of curbing global warming.

But Dr Caldeira said that such a strategy should now be re-considered.

"Previously, most experts had looked at ocean absorption of carbon dioxide as a good thing - because in releasing CO2 into the atmosphere we warm the planet; and when CO2 is absorbed by the ocean, it reduces the amount of greenhouse warming.


Old Post 08-15-2008 01:16 AM
Click here to Send chelsea8611 a Private Message Find more posts by chelsea8611 Add chelsea8611 to your buddy list Click Here to Ignore chelsea8611 REPORT this Post to a ModeratorNOMINATE this Post for Reward Points Reply w/Quote

Staff
Dekka00
Administrator

offline
Registered: Sep 2003
Local time: 04:34 AM
Location: Virginia
Posts: 11592

post #2  quote:

well i suppose if it's going gradually life'll adapt like it has all along

Old Post 08-15-2008 05:03 AM
Click here to Send Dekka00 a Private Message View Dekka00's Journal Visit Dekka00's homepage! Find more posts by Dekka00 Add Dekka00 to your buddy list Reply w/Quote
Time: 09:34 AM Post New Thread   
  Print Version | Email Page | Bookmark | Subscribe to Thread
INReview INReview > Hot Topics > Global Warming & Climate Change > CO2 change the water of ocean to acid http://www.lookchem.com/cas-324/3244-88-0.html
Search this Thread:
Forum Rules:
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is OFF
vB code is ON
Smilies are ON
[IMG] code is ON
Forum Policies Explained
 
Rate This Thread:

< >

Copyright ?2000 - 2018, Jelsoft Enterprises Limited
Page generated in 0.04775500 seconds (51.91% PHP - 48.09% MySQL) with 35 queries.

ADS

© 2018, INReview.com.   Popular Forums  All Forums   Web Hosting by Psyphire.
INReview.com: Back to Home