Scientists demonstrated the first-ever remote observations of the fine-scale structure at the base of clouds. The results show that the air-cloud interface is a transition zone where aerosol particles suspended in Earth's atmosphere give rise to the droplets that ultimately form clouds.
Scientists demonstrated the first-ever remote observations of the fine-scale structure at the base of clouds. The results show that the air-cloud interface is a transition zone where aerosol particles suspended in Earth's atmosphere give rise to the droplets that ultimately form clouds. The research will enable scientists to gain insight into how changes in atmospheric aerosol levels could affect clouds and climate.
But to accurately predict the impacts of these aerosol-cloud interactions on the climate system, scientists need a way to measure cloud droplet number concentrations -- without having to fly up into lots of clouds to collect samples.The new remote-sensing measurements and method provide a novel way to estimate droplet concentration, which will enable scientists to gain insight into how changes in atmospheric aerosol levels could affect clouds and climate.
"We used our unprecedented fine-scale T2 observations of the cloud base region to develop a theoretical model to estimate cloud droplet concentration based on T2-measured backscatter signals," he added. To make the technique truly useful for accurate remote real-world measurements, the T2 lidar will have to be properly calibrated. That is, scientists need to fully understand how the measured light signals match up with the real-world cloud properties so they can fine-tune the computational algorithms they've written to relate one to the other.
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