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Questions tagged [carbon]

The tag has no usage guidance.

6
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3answers
153 views

In an Earth-like planet with no history of carbon-based life forms, would there be limestone?

The extent of my understanding of limestone is about what Wikipedia says at the very top of the page: Limestone is a sedimentary rock, composed mainly of skeletal fragments of marine organisms such ...
3
votes
2answers
93 views

Can I use diamonds as fossil fuel?

Aside from cultural implications (correct me if I'm wrong but artificial diamonds are not so hard to obtain, right?) diamonds are pure carbon and are more unstable than graphite. So, why not use ...
5
votes
1answer
41 views

If a person uses public transport, how much carbon is added to the footprint?

For example if I use a public transport which is burning fuel with or without my presence, how one could calculate carbon footprint? Hope I am in the right place for asking this question.
6
votes
0answers
101 views

What controls the acidity of the ocean?

I have learned that: coral reefs are made up mostly of calcium carbonate coral reefs are mainly distributed in the tropical zone The calcium carbonate will be decomposed in the reaction as ...
3
votes
1answer
48 views

Will photosynthesis based carbon sequestration always be more efficient than other chemical means - in terms of rate?

There seem to be many ideas for carbon sequestration. The problem with anything electrochemical, is that unless it is solar-based, you're putting carbon into the atmosphere at probably a great rate ...
6
votes
0answers
39 views

Effect of snow on BVOC emmisions of plants/trees

Plants re-emit a substantial fraction of their assimilated carbon into the atmosphere as Biogenic Volatile Organic Compounds (BVOCs) that affect the chemical and physical properties of the atmosphere. ...
1
vote
0answers
27 views

How to calculate the Ecological footprint [closed]

I'm looking for a algorithm or a formula to calculate the ecological footprint of one person who is using any kind of vehicle (car, public transit...).
6
votes
3answers
3k views

Does organic decay release the same CO2 as burning?

Does a fallen tree left to decay release essentially all of its stored carbon as CO2 to the atmosphere? Or is the carbon uptaken by termites and bacteria, preventing its release to the atmosphere?
6
votes
7answers
10k views

Is there any experiment to prove that CO2 with the atmosphere concentration can have greenhouse effect?

All gas molecules have the capability to absorb radiation energy. $\rm{CO}_2$ has much less capability to absorb radiation energy, comparing with water vapor. In Earth's atmosphere currently $\rm{CO}...
15
votes
2answers
2k views

Does rain (temporarily) deplete the surrounding atmosphere of carbon dioxide?

CO2 in the air dissolves into rain water, making them slightly acidic. Is that enough to deplete the surrounding air out of CO2? If yes, how fast does this occur? Is it only with the first drops of ...
1
vote
0answers
38 views

Effect of hydration on CaO in calcium looping

How does hydration increase the lifetime of CaO in calcium looping?
2
votes
1answer
78 views

Percentage of power plants with carbon capture and sequestration (CCS) technology? [closed]

Does anyone know roughly what percentage of fossil fuel power plants around the world are equipped with carbon capture and sequestration (CCS) technology?
1
vote
1answer
129 views

Time relativity relating to Carbon dating? [closed]

Theoretically if in early years the earth was moving at an astronomically different pace (whether in orbit or rotation, whatever sounds better) wouldn't that alter the science of carbon dating? As I ...
6
votes
1answer
111 views

What is the evidence it is feasible to reverse ocean acidification by adding large quantities of a base (bicarb soda)?

A commenter made the following reflection: Ocean acidification is different than sea level rise and global warming, however. With ocean acidification, we're making an excursion unlike anything the ...
5
votes
4answers
2k views

Why has CO2 decreased in the history of the Earth?

I noticed that the $\ce{CO2}$ is actually decreasing in the eon time. My guess is lush vegetation or forests began to grow which absorbed the $\ce{CO2}$ by photosynthesis? Would anyone give me any ...
3
votes
2answers
8k views

What is the difference between a carbon sink and a carbon reservoir?

I am trying to figure out the difference between a carbon sink and a carbon reservoir. The definition for a carbon sink from wikipedia is that “carbon sink is a natural or artificial reservoir that ...
4
votes
1answer
101 views

Timescale of the biological pump?

I'm tying to find any clue about the timescale of the biological pump. That the carbon is recycled to the surface ca. 1,000 years is clear but the timescale of the biological pump seems hard to find. ...
22
votes
2answers
1k views

Are there pockets of liquid carbon dioxide in Earth's oceans?

The carbon dioxide phase diagram shows that at high pressure and normal temperature CO2 becomes liquid. Since it is heavier than water, I wonder if there are lakes of liquid CO2 at the bottom of the ...
11
votes
1answer
442 views

Oscillations in the Keeling curve?

I'm having a slightly difficult time understanding the Keeling curve, pictured here: I understand that carbon dioxide (ppm) is increasing with respect to time, but why is there an oscillation between ...
11
votes
1answer
385 views

The youngest and oldest source rock for hydrocarbons in economic quantities

Most famous and productive source rocks for hydrocarbons are Paleozoic or Mesozoic, but there are also examples from the Neogene. Time is needed for the rock to reach the right depth and temperature ...
7
votes
1answer
88 views

What amount of permafrost carbon release could be expected with the IPCC worse-prediction of a 4.8C temperature rise?

As answered in my earlier question How much methane clathrates are buried in continental deposits?, there is alot of methane trapped in the form of clathrates in continental deposits. Additionally, ...
10
votes
2answers
281 views

How do I calculate Per capita $\ce{CO2}$ emissions?

I need to find the per capita $\ce{CO2}$ emissions for Canada in 2010 (expressed in kg/day). I know that Canada had $\ce{CO2}$ emissions of 0.55 (Gt) and a population of 34 million in 2010. I am just ...
13
votes
5answers
201 views

How will increased $\ce{CO2}$ affect forests and other vegetative areas?

Some researchers contend that increases in atmospheric CO2 (e.g. from anthropogenic emissions) will enhance plant growth in general. What is the level of that enhancement? Does the associated ...