Best Answer

In 1850 the percentage of carbon dioxide in the atmosphere was 278 ppm (parts per million), which is 0.0278% according to some sources.

From 1850 onwards the Industrial Revolution began. Factories sprang up and we started burning wood and coal to drive industry. When we discovered oil, we burned it to power transport and generate electricity. We have been doing this ever since.

Carbon dioxide in the atmosphere is now (March 2011) 392 ppm, which is an increase of 41% increase, entirely caused by anthropogenic or human activity.


Carbon Dioxide has NEVER stayed "still" at anytime in the history of the planet. Percentages have varied in the past 2000 years from 0.019% to as high as 0.04% (Beck 2008 and Vostok record) The fact is that CO2 has been shown to be rising steadily for over 10,000 years. CO2 has ALWAYS followed the 100K year solar cycles and is still doing so today.

It is interesting to note that the science of 1850 does not agree with the idea that CO2 was at 278 ppm. Over 90,000 measurements of the day, done with methods that we still use, show that CO2 ran over 400 ppm in the 1800's and reached highs of 440 ppm. Some of the creators of these measurements even won Noble prizes for their work. Today, alarmists ignore 100% of their measurements, in favor of proxies which show lower historical numbers.

Man's contributions to the total CO2 output is small. In terms of percentages we produce about 5.25% of all annually generated CO2. We produce about 0.28% of all greenhouse gas annually. Oceans produce over 90 to 100 Btonnes of CO2 annually. The difference though, is that some of man's contributions are not from sources that would otherwise produce CO2. Whether the planet is able to absorb this portion man introduces is what the real question with global warming really is. If man's portion is able to be absorbed by the planet, no warm, no foul. If it is not able to be absorbed, we are making a big problem for future generations.

Forests, when left natural and allowed to decay can produce substantially more CO2 than man does. Burning of wood produces the same CO2 as a tree rotting, yet becomes part of man's 5.25% contribution. You will find that percentage values range from as little as 2% to as high as 5.25% because of the incomplete science we still have on the subject. The oceans possible output variance is larger than our total involvement. Despite the consensus of political groups, we still have a great deal to learn before science can become as certain as politicians. Yes, the planet has seen a change in our atmosphere that could be as high as 0.007%. The issue is the small amount of CO2 in our atmosphere.

It should be noted that the past 10,000 years showed almost a 100% increase in CO2 levels BEFORE man started to burn fossil fuels. NONE of that can be considered man induced. No respectable science group claims that the entire known increase in CO2 levels is possibly caused by man. They DO state that man is a contributor. It is the level of involvement that is the question.

User Avatar

Wiki User

βˆ™ 2011-04-27 11:16:22
This answer is:
User Avatar

Your Answer


Related Questions

Approximately what percentage of global carbon dioxide emissions come from forest fires?

Very little, compared to human emissions. It's hard to say exactly...It is 25.687%, approximately, it is 25.7%it is 25.687%

What percentage of global greenhouse gas emissions come from the US?

In 2009 the US emitted 5420 million tonnes of fossil fuels carbon dioxide. This was 17.8% of the world's total.

Why does Toyota Celica engine warning light come on emissions?

The engine warning light for emissions might come on in a Toyota Celica if the Oxygen Sensors are bad. It might also come on if the catalytic converter is not working properly or is plugged.

What persenage of CO2 emissions come form forest fires?


Were does carbon dioxide come from?

Carbon dioxide comes from the Earth's atmosphere and also the crust. 82 percent of greenhouse gas is generated from human activity.

What causes the service emissions system light to come on on Ford Escape?

There can be several causes for the service emissions systems light to come on in a Ford Escape. The light can indicate an 02 sensor is out or it can indicate an exhaust leak.

How does human activity affect the atmosphere?

Mostly our carbon dioxide emissions from burning fossil fuels, contributing to the 'greenhouse effect' and trapping heat energy inside the Earth's biosphere. Gases such as methane (can come from spray cans) and also carbon dioxide are also burning away the Ozone Layer, a helpful layer of the stratosphere which blocks the most of the harmful UV rays from the sun.

When does Paranormal Activity come out?

Paranormal Activity was released on October 16, 2009.

Why does emissions light come on?

If the emissions light turns on there is a problem with the exhaust system. The oxygen sensor, erg system and exhaust should be checked for any leaks or malfunctions.

Why do environmentalists believe that carbon dioxide emissions have increased?

At this time we are seeing rapid industrialization in China and India; conservation measures in the western world have not come close to offsetting the increased emissions from developing economies. Carbon dioxide emissions have increased.

What causes the check engine to come on your 1992 Ford Taurus?

There is a problem with the emissions system.

Where acid rain is?

Acid rain is regular rain that is bringing down the sulfuric gases from the atmosphere. The sulfuric gases come from the emissions human produce, such as automobile gas exhaust emissions and the gases produced by the industrial waste. Acid rain is dangerous for your health and you should avoid playing in the rain, especially if you live in an urban setting, in a city.

Why is an engineered landfill an environmental friendly method when compared to an open landfill?

An engineered landfill is designed to capture and treat any emissions that may come from the decomposition from the garbage. The emissions may be in the form of liquid runoff or vapor emissions like natural gas.

What can you do if it come from excessive sexual activity?

If what comes?

When will Paranormal Activity 2 come to Netflix?

Paranormal Activity 2 is currently available on Netflix.

When does Paranormal Activity 4 come out?

Paranormal Activity 4 is scheduled for an October 2012 release.

When does Paranormal Activity 3 come out on DVD?

paranormal activity 3 comes out on the 27th February

When does Paranormal Activity 3 come out on Redbox?

Paranormal Activity 3 is currently available on Redbox.

Which gases are the main greenhouse gases and where do they come from?

Carbon dioxide and methane. Co2 is mainly from factories, vehicles, and some human activity, while methane is from horses and other livestock.

What causes check engine light to come on 1994 Mazda 626?

A problem with the emissions system.

Which gases come out of volcanoes?

The most notable emissions from volcanos to air are the clouds of ash (finely powdered rock). The gaseous emissions include sulfur dioxide, carbon dioxide and water vapour.

What causes a emissions light to come on in a 2012 GMC Terrian?

It is on because the ECU has detected a problem with the emissions system on the vehicle. A scan of the ECU with an OBD2 scanner will tell you where to start looking for the problem.

When did Paranormal Activity 3 come out?

Paranormal Activity 3 was released in the US on October 21, 2012.

Where did Hawaii come from?

The islands were created by volcanic activity.

Emisions workshop is this the exhaust?

Emissions are what come out of your exhaust and 2008+ (usa) have a newer exhaust setup that is suppose to cut down on contaminates that come from your exhaust.