What do I think, What can I do?

Posts tagged ‘co2’

COP 18: Another opportunity in Doha

COP 18 is the 18th international meeting to address the climate change problem. It is held in Doha . I listened the news in the radio this morning with quite a clear summary of the challenges involved and by the way a good explanation of climate change causes, encouraging but an exception, I would bet that most of my friends, family, coworkers have not heard about it.

This meetings should be very important as climate change problem requires global solutions to be shared by most countries. However,  the previous meetings have been at least partially frustrating as the advance is slow and the discussions are more predominant than the agreements. The figure below shows that the world emission path has continued to go upwards in spite of 17 COP meetings, so reached agreements are clearly insufficient. But we, the humans, need time to get agreements, the problem is that we are running out of the time to get a reasonable agreement for a reasonable future climate.

Graph showing CO2 emission path last years

Graph showing CO2 emission path last years, data from IEA

Media could play an important role to make those meetings more efficient and to help people know what is discussed there and how all of us are affected. A convinced world population could be a great force to seriously start climate change mitigation instead of adaptation.

By the way, the guest country Qatar is ranked 1st in per capita emissions in spite of their last year reductions (last figure). The comparison with USA, Germany, Japan or China (4 out of 5 economic powers in the world) is quite significant. If all of us would be emitting so much CO2 (I do not think it is possible) we would live  in an oven.

CO2 per capita emissions for 5 countries including Qatar (source of data CDIAC)

Category:

climate wars

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Local vegetables reduce Carbon Footprint

At home, we take part in a local group of vegetable and egg buy/sell. The idea is good and simple. A local producer grows vegetables (in this case ecological ones but it is not compulsory for this idea), it packs some bags every week with some variety of them depending on the season and leaves them on monday in one place. During that day the ten customers take the bags and discover the surprise of that week in form of fresh, healthy and local food. The payments are done for three months periods and the producer gets a fixed customer group that visit  him/her every year.

There are many advantages as promoting local jobs in primary sector, avoiding complex intermediate markets, the confidence between customer and producer,… and the reduction of Kms for the vegetables and the associated CO2, I always consider funny that the lettuce I am eating has traveled more than me in the last year.

This possibility is possible, it is reasonable and it is growing!

Category:

Small Great things, Uncategorized

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CO2 could help us to produce renewable energy?

Sometimes the line between good and bad ones is not only subtle, it is also changing fast.

If the technology these news  explain is succesful, we may find a good ally in this gas that is transforming our climate. The concept can be explained in a simple way, they extract the heat from the earth, at 800 m below the surface and use it to produce energy. This is not new, it is the geothermal energy, the funny issue in this case is that they do it in conventional thermal power stations using the output CO2 from the combustion as the thermal conducting fluid instead of, for example, water. This way, two benefits are obtained, in one hand some carbon sequestration (I do not know how much) and  in the other additional power produced from the extracted heat.

The authors are confident with their results to the extent of making a spin-off from University and funding their own company. I have more doubts for some reasons:

  • because I do not trust much carbon sequestration,
  • because I do not understand the advantages it would have respect to other geothermal technologies and
  • because the application seems a bit limited if they have to combine a thermal power station with an appropriate geological location.

In my opinion, the main advantage would come precisely from the possibility to harness the power of standard fossil fuel installations by avoiding much of their damage (I do not how much). We will see if these good intentions make good realities or are just too optimistic or too expensive. Sometimes, when we are too tied to something it is easy to lose perspective and favour those solutions that allow us to continue with the link; I suspect this is a constant temptation for us related to fossil fuel technologies.

In any case if it works and helps I will welcome it, whereas, for the moment, I prefer to bet in the already proven wind and solar industries, among others.

Finally, it is fair to mention that my information source was amazings.com

Category:

Renewable energy, Uncategorized

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Brussels airport, small example of EU

Last week I took another flight again to go to Hannover this time. The following photos from Brussels airport show how CO2 diminution is considered a positive message for big european companies, even for energy related ones; atleast in Brussels. Next two photographs are from Statoil and ABB and both are quite explicit regarding CO2 diminution.

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Uncategorized

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