Satellite study reveals that area emits one billion tonnes of carbon

carbon dioxide
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A vast region of Africa affected by drought and changing land use emits as much carbon dioxide each year as 200 million cars, research suggests.

Observations from two satellites have consistently shown emissions over northern tropical Africa of between 1 and 1.5 billion tonnes of carbon each year.

The data suggest stored carbon has been released from degraded soils—those subject to prolonged or repeated drought or change—in western Ethiopia and western tropical Africa, but scientists say further study is needed to provide a definitive explanation for the emissions.

Their findings improve understanding of greenhouse gas sources and aid efforts to meet the terms of the Paris Agreement, which aims to limit average global temperature rise below 2C.

The carbon source might have gone undiscovered with land-based surveys alone, according to a team led by researchers from the University of Edinburgh.

Researchers examined data gathered by two NASA —Japanese Greenhouse Gases Observing SATellite (GOSAT) and the Orbiting Carbon Observatory (OCO-2).

They compared readings with three atmospheric models showing changes in vegetation, and a host of other measurements of ground water, fire and levels of photosynthesis.

The study is the result of a decade of work, involving hundreds of dedicated engineers and scientists, and billions of dollars of investment by space agencies.

Professor Paul Palmer, of the University of Edinburgh's School of GeoSciences, who led the study, said: "The tropics are home to one-third of Earth's three billion trees and their stored carbon, and yet we are only scratching the surface of understanding how they are responding to changes in climate. We anticipate that will continue to improve that situation."

The study is published in Nature Communications.


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More information: Net carbon emissions from African biosphere dominate pan-tropical atmospheric CO2 signal, Nature Communications (2019). DOI: 10.1038/s41467-019-11097-w , https://www.nature.com/articles/s41467-019-11097-w
Journal information: Nature Communications

Citation: Satellite study reveals that area emits one billion tonnes of carbon (2019, August 13) retrieved 23 August 2019 from https://phys.org/news/2019-08-satellite-reveals-area-emits-billion.html
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Aug 13, 2019
natural co2 swamps "hoomon" co2 in any case. I still haven't seen indication that the variance isn't within the standard error of measure.

Aug 13, 2019
US Corn fields and other crop farms soak up more CO2 than the the worlds rain forests yearly. So reporting one side of the "green house gas" apocalypse of coal, cars or natural deserts is ignorant and deceitful at best. Typical political motivated science where you give one fact while burying 5 refuting facts. Even your god Al Gore admitted that the earth has cycles of heat and cold. And science today admits the in fact other planets have the same ratio of heating and cooling as the earth... so unless there are aliens on mars running coal factories and Humvees I call BS on your man-made climate change.

Aug 13, 2019
US Corn fields and other crop farms soak up more CO2 than the the worlds rain forests yearly.
Not even close. All the crops in the US at most adsorb ~1 billion tons of CO2 per year. The Amazon rainforest alone absorbs ~2 billion tons of CO2 per year. Regardless, all that corn is just broken down into carbon again when it is consumed by animals. If anything, there would be a net gain of atmospheric CO2 because of the omissions of the machines used to harvest the crops and the vehicles used to transport the crops.
So reporting one side of the "green house gas" apocalypse of coal, cars or natural deserts is ignorant and deceitful at best.
What exactly is this other side?
Typical political motivated science where you give one fact while burying 5 refuting facts. Even your god Al Gore admitted that the earth has cycles of heat and cold.

Yikes, I suggest psychotherapy.

Aug 14, 2019
natural co2 swamps "hoomon" co2 in any case. I still haven't seen indication that the variance isn't within the standard error of measure.
Thats because you still cannot even understand the basics of all the mountains of evidence for Human Induced Climate Change ;)

Aug 14, 2019
Anonym
US Corn fields and other crop farms soak up more CO2 than the the worlds rain forests yearly
When you make assertions - it is good to provide some links - so others can see that you are not being like shootist et al - and just dumping bullshit on the internet. But so what if your assertion is true? C02 levels - https://climate.n...dioxide/

C02 levels and global temperatures - http://interactiv...-policy/

So what is your explanation for the data here Anonym?

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