By Tom Goh article A carbon dioxide emission in your photo can make it harder for scientists to determine the extent of the Earth’s warming, new research suggests.
In a study published online on Monday in Science Advances, researchers used carbon dioxide sensors and a carbon dioxide detector to analyze the spectral signature of nearly 20,000 photos taken of the sun, ground, oceans and atmosphere of the Pacific Ocean.
They then used these measurements to calculate the concentration of carbon dioxide in the air.
To do this, they used a technique called “capturing” photos in which the sensor captures light from a source that emits infrared light and then filters it, which is how the sensor analyzes the light.
The technique can be used to determine whether a photo is carbon dioxide, or a mixture of two or more of the two gases, and it can be applied to other types of photos.
However, capturing photos is a relatively crude method of assessing carbon dioxide concentrations.
“The best way to capture and analyze a large volume of images is to use a very sophisticated camera, but it’s not that simple,” says Andrew Pyle, a professor of physics at Princeton University.
“There’s a lot of complexity involved in capturing an image of the atmosphere or the oceans, and then filtering that light.”
The method used in the study, called “sampling” or “sampled imaging,” uses a digital camera to capture a series of images and then uses a carbon isotope spectrometer to measure the chemical composition of each individual photo.
The results of the study show that carbon dioxide levels in a photo can be calculated with a 99.99 percent accuracy.
To make their measurements, the researchers used a digital photo-analysis instrument called the Photomicroscope and Instrument System, or PMIS, which uses a scanning electron microscope.
“It’s a super sensitive instrument,” says Pyle.
The instrument is designed to detect molecules of carbon and other molecules.
It can also be used for imaging and to detect the carbon isotopes in the atmosphere.
The team measured the concentration and spectra of carbon in photos taken from April to October 2017 in the Pacific.
They used the measurement to determine that the amount of carbon on the surface of the ocean increased from the month of April to the month that the study was conducted, and that the increase was not uniform across the globe.
“We’re finding that it’s increasing on the west coast of North America,” says Peter Johnson, a graduate student in physics at MIT who is also the lead author of the paper.
In other words, the amount on the south side of the world has been increasing at a faster rate than the east coast of the United States.
The study suggests that these increases are a consequence of the increasing amount of CO 2 in the ocean, and this is not necessarily because of humans, but rather because of the increased atmospheric carbon dioxide.
“This is an effect of human emissions of CO2 from fossil fuel burning,” Johnson says.
“I don’t think we’ve seen any other effect of CO3 in the climate.
We haven’t seen a large effect of carbon emissions.”
However, he points out that it may not be possible to directly measure carbon emissions on the ground in a large scale because the instruments used in PMIS are very small, so the results are not representative of global carbon dioxide emissions.
“It’s important to note that the measurements we made here are a very low-resolution one,” Johnson notes.
“You have to be looking at a small sample size to be able to make these measurements.
And the fact that we’re using a lot more instruments means we need to use more measurements in the future to get a better picture of global CO2 emissions.”
In addition to measuring the amount and concentration of CO dioxide in photos, the team also looked at the amount that could be emitted from the sun and the amount emitted by other sources, such as clouds.
In these cases, the authors found that the change in the amount the surface atmosphere was absorbing CO 2 was not consistent across the planet.
“If we could directly measure the amount from the atmosphere to the ocean in a global way, then that would tell us the extent to which carbon dioxide has been emitted to the atmosphere,” Johnson adds.
Johnson’s team found that between April and October 2017, the rate of the increase in the concentration in the oceans and the surface was more than twice as fast as the increase of the amount in the sky.
“In other terms, we’re seeing emissions that are happening at rates that are quite large,” Johnson explains.
“So, it’s kind of a remarkable finding.”