The Michigan Engineer News Center

How wildfires affect climate

Mark Flanner, assistant professor of atmospheric science, says that whether the ultimate effect is warming or cooling varies, as does how long these impacts last. | Short Read

Forest fires can affect the Earth’s climate in several ways. They release greenhouse gases. They send soot and other aerosol particles into the atmosphere. And they change how the Earth’s surface reflects sunlight, especially in areas where snow falls.

Mark Flanner, assistant professor of atmospheric science, says that whether the ultimate effect is warming or cooling varies, as does how long these impacts last. The greenhouse gases are very long-lived, on the order of a century, while the smoke effects are short-lived, lasting roughly a week.

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The electrons absorb laser light and set up “momentum combs” (the hills) spanning the energy valleys within the material (the red line). When the electrons have an energy allowed by the quantum mechanical structure of the material—and also touch the edge of the valley—they emit light. This is why some teeth of the combs are bright and some are dark. By measuring the emitted light and precisely locating its source, the research mapped out the energy valleys in a 2D crystal of tungsten diselenide. Credit: Markus Borsch, Quantum Science Theory Lab, University of Michigan.

Mapping quantum structures with light to unlock their capabilities

Rather than installing new “2D” semiconductors in devices to see what they can do, this new method puts them through their paces with lasers and light detectors. | Medium Read