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Climate Change & The Environment Discuss No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Finds at the General Discussion; It's solar. "Most of the carbon dioxide emitted by human activity does not remain in the atmosphere, but is instead ...

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Old 12-31-2009, 12:39 PM
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Default No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Finds

It's solar.

"Most of the carbon dioxide emitted by human activity does not remain in the atmosphere, but is instead absorbed by the oceans and terrestrial ecosystems. In fact, only about 45 percent of emitted carbon dioxide stays in the atmosphere................

..................To assess whether the airborne fraction is indeed increasing, Wolfgang Knorr of the Department of Earth Sciences at the University of Bristol reanalyzed available atmospheric carbon dioxide and emissions data since 1850 and considers the uncertainties in the data.

In contradiction to some recent studies, he finds that the airborne fraction of carbon dioxide has not increased either during the past 150 years or during the most recent five decades."
No rise of atmospheric carbon dioxide fraction in past 160 years, new research finds

Last edited by Stinger; 12-31-2009 at 12:41 PM.. Reason: Correct Title paste
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Old 12-31-2009, 08:07 PM
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Default Re: No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Fi

Same article
Quote:
However, some studies have suggested that the ability of oceans and plants to absorb carbon dioxide recently may have begun to decline and that the airborne fraction of anthropogenic carbon dioxide emissions is therefore beginning to increase.
Same web site

Global Warming From Carbon Dioxide Will Increase Five-Fold Over The Next Millennium, Scientists Predict


Higher Carbon Dioxide, Lack Of Nitrogen Limit Plant Growth
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Old 01-01-2010, 03:27 PM
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Default Re: No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Fi

Quote:
Originally Posted by saltwn View Post
Same article

Quote:
However, some studies have suggested that the ability of oceans and plants to absorb carbon dioxide recently may have begun to decline and that the airborne fraction of anthropogenic carbon dioxide emissions is therefore beginning to increase.
Yes amazing how in the face of measurable factual data the report has to assert some unnamed studies and that they only suggest.

They just can't stand it.

"The benefits of carbon dioxide supplementation on plant growth and production within the greenhouse environment have been well understood for many years."

Carbon Dioxide In Greenhouses

Over the years there have been numerous laboratory experiments which conclude that increases levels of CO2 result in increased plant growth no matter how that plant growth is quantified. Sylvan Wittwer in Food, Climate and Carbon Dioxide tabulates the results. He observes

"The effects of an enriched CO2 atmosphere on crop productivity, in large measure, as positive, leaving little doubt as the benefits for global food security …. Now, after more than a century, and with the confirmation of thousands of scientific reports, CO2 gives the most remarkable response of all nutrients in plant bulk, is usually in short supply, and is nearly always limiting for photosynthesis … The rising level of atmospheric CO2 is a univesally free premium, gaining in magnitude with time, on which we can all reckon for the foreseeable future. "
Earth's Vegetation and Soil

So back to the point, the effect of CO2 emissions was overstated.
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Old 01-01-2010, 08:39 PM
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Default Re: No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Fi


Is global warming real???


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Old 01-02-2010, 03:51 PM
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Default Re: No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Fi

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Is global warming real???
Not for the last decade and not much before.
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Old 01-02-2010, 05:42 PM
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Default Re: No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Fi

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Originally Posted by Stinger View Post
Not for the last decade and not much before.
did you even watch the video, I doubt it!!!
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Old 01-02-2010, 06:13 PM
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Default Re: No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Fi

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Originally Posted by Igottago2 View Post
did you even watch the video, I doubt it!!!
I've seen the whole polar bear thing so debunked so often no I didn't waste my time. The fact remains the planet hasn't heated in the last decade, something totally not predicted by the computer models and hasn't heated much in the last 150 years and polar bears survived much higher temps than now.

Seems the planet is adapting to whatever the CO2 level is so there's not much we can do to change it.
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Old 01-02-2010, 09:03 PM
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Default Re: No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Fi

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Originally Posted by Stinger View Post
I've seen the whole polar bear thing so debunked so often no I didn't waste my time. The fact remains the planet hasn't heated in the last decade, something totally not predicted by the computer models and hasn't heated much in the last 150 years and polar bears survived much higher temps than now.

Seems the planet is adapting to whatever the CO2 level is so there's not much we can do to change it.


Still, I don't think you've seen "THIS" video....

WATCH THE VIDEO...
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Old 01-03-2010, 11:04 PM
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Default Re: No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Fi

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Originally Posted by Igottago2 View Post
Still, I don't think you've seen "THIS" video....

WATCH THE VIDEO...
OK.....................
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Old 10-30-2017, 08:52 AM
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Exclamation Re: No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Fi

UPDATE:

Granny says dat's why it's been hard to catch her breath lately...

Record surge in atmospheric CO2 seen in 2016
Mon, 30 Oct 2017 - CO2 in Earth's atmosphere jumped to a record in 2016, says the World Meteorological Organization.
Quote:
Concentrations of CO2 in the Earth's atmosphere surged to a record high in 2016, according to the World Meteorological Organization (WMO). Last year's increase was 50% higher than the average of the past 10 years. Researchers say a combination of human activities and the El Niño weather phenomenon drove CO2 to a level not seen in 800,000 years. Scientists say this risks making global temperature targets largely unattainable. This year's greenhouse gas bulletin produced by the WMO, is based on measurements taken in 51 countries. Research stations dotted around the globe measure concentrations of warming gases including carbon dioxide, methane and nitrous oxide. The figures published by the WMO are what's left in the atmosphere after significant amounts are absorbed by the Earth's "sinks", which include the oceans and the biosphere.


Emissions from human activities have levelled off but concentrations in the atmosphere continue to grow

2016 saw average concentrations of CO2 hit 403.3 parts per million, up from 400ppm in 2015. "It is the largest increase we have ever seen in the 30 years we have had this network," Dr Oksana Tarasova, chief of WMO's global atmosphere watch programme, told BBC News. "The largest increase was in the previous El Niño, in 1997-1998 and it was 2.7ppm and now it is 3.3ppm, it is also 50% higher than the average of the last ten years." El Niño impacts the amount of carbon in the atmosphere by causing droughts that limit the uptake of CO2 by plants and trees. Emissions from human sources have slowed down in the last couple of years according to research, but according to Dr Tarasova, it is the cumulative total in the atmosphere that really matters as CO2 stays aloft and active for centuries. Over the past 70 years, says the report, the increase in CO2 in the atmosphere is nearly 100 times larger than it was at the end of the last ice age.


Droughts related to El Niño, such as this one in Colombia, limited the ability of plants and trees to soak up carbon

Rapidly increasing atmospheric levels of CO2 and other gases have the potential, according to the study to "initiate unpredictable changes in the climate system... leading to severe ecological and economic disruptions." The study notes that since 1990 there has been a 40% increase in total radiative forcing, that's the warming effect on our climate of all greenhouse gases. "Geological-wise, it is like an injection of a huge amount of heat," said Dr Tarasova. "The changes will not take ten thousand years like they used to take before, they will happen fast - we don't have the knowledge of the system in this state, that is a bit worrisome!" According to experts, the last time the Earth experienced a comparable concentration of CO2 was three to five million years ago, in the mid-Pliocene era. The climate then was 2-3C warmer, and sea levels were 10-20m higher due to the melting of Greenland and the West Antarctic ice sheets.


The British Antarctic Survey Halley base was one of the stations where atmospheric measurements were made

Other experts in the field of atmospheric research agreed that the WMO findings were a cause for concern. "The 3ppm CO2 growth rate in 2015 and 2016 is extreme - double the growth rate in the 1990-2000 decade," Prof Euan Nisbet from Royal Holloway University of London told BBC News. "It is urgent that we follow the Paris agreement and switch rapidly away from fossil fuels: there are signs this is beginning to happen, but so far the air is not yet recording the change." Another concern in the report is the continuing, mysterious rise of methane levels in the atmosphere, which were also larger than the average over the past ten years. Prof Nisbet says there is a fear of a vicious cycle, where methane drives up temperatures which in turn releases more methane from natural sources. "The rapid increase in methane since 2007, especially in 2014, 2015, and 2016, is different. This was not expected in the Paris agreement. Methane growth is strongest in the tropics and sub-tropics. The carbon isotopes in the methane show that growth is not being driven by fossil fuels. We do not understand why methane is rising. It may be a climate change feedback. It is very worrying."


Scientists handling air samples at the Cape Grim monitoring station in Australia

The implications of these new atmospheric measurements for the targets agreed under the Paris climate pact, are quite negative, say observers. "The numbers don't lie. We are still emitting far too much and this needs to be reversed," said Erik Solheim, head of UN Environment. "We have many of the solutions already to address this challenge. What we need now is global political will and a new sense of urgency." The report has been issued just a week ahead of the next instalment of UN climate talks, in Bonn. Despite the declaration by President Trump that he intends to take the US out of the deal, negotiators meeting in Germany will be aiming to advance and clarify the rulebook of the Paris agreement.

Record surge in atmospheric CO2 seen in 2016 - BBC News
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