Tag Archives: sequestration

Our carbon sinks are absorbing twice as much carbon dioxide as they used to

The term ‘carbon sink’ is becoming more common as we all gain the scientific education needed to deal with climate change and global warming.

According to Wikipedia, carbon sinks can be both natural and artificial. Both involve the process of absorbing carbon dioxide from the atmosphere, which is called carbon sequestration.

The main natural carbon sinks are the oceans and plants, and with our planet covered in so much water, the oceans are the biggest sinks on Earth. The main artificial ones are landfills and the various carbon capture projects.

In those countries that follow the Kyoto Protocol, the use of artificial carbon sinks can serve as a way to offset other carbon use.

Of course, as we are pumping more carbon into the atmosphere our natural carbon sinks are ingesting more carbon dioxide:

Nature has her own way of dealing with excess carbon dioxide. When human activities spew CO2 into the atmosphere, plants absorb more of it than usual, leading to profuse growth. The ocean, too, swallows more than it otherwise would. Many scientists fret that these so-called carbon sinks risk getting clogged up. Some even suggest that this has already started happening. - The Economist

Some even estimate that the amount of CO2 absorbed by the oceans and plants has doubled. Nobody knows what this means, maybe it can continue and alleviate some of our carbon problems, or there could be a backlash effect.

For more on this, check out The Economist article, That Sinking Feeling.

 

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Trees are virtual air conditioners that save millions in electricity, water, carbon

 

An article from The Atlantic focuses on the value of trees:

I was approached by someone from an initiative called San Diego County Trees…(a project) extolling the benefits of urban trees. I just spent time on the website, where the coolest feature is an interactive map of the whole county showing very specific tree locations and information, including quantified benefits…(like) carbon sequestration, water retention, energy saved, and air pollutants reduced.

 

Wow! Look at that image…millions of dollars in savings, water conservation, improved air quality. That is impressive.

Some more facts include, “the net cooling effect of a young, healthy tree is equivalent to ten room-size air conditioners operating 20 hours a day,” and the energy savings of planting a tree on the sunny side of your house (3% after 5 years, 12% after 15 years).

I love trees.