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August 16, 2019 08:43 pm

NASA Made a Rare Flight Right Through a Thundercloud Formed by a Wildfire

For years, Naval Research Laboratory meteorologist David Peterson has been obsessed with one of Earth's rarest atmospheric spectacles: thunderclouds formed by raging wildfires. Last week, he became one of the only people on Earth to fly straight through one. From a report: Peterson is the lead forecaster for Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ), a joint NASA and NOAA-led field campaign that's spending the summer intensively studying wildfire smoke from the ground, the air, and satellites. On August 8, he rode shotgun as NASA's DC-8 research aircraft passed directly through an anvil cloud as it was developing over the 45,000-acre Williams Flats fire currently burning in the Pacific Northwest. Over the next few hours, the plane would conduct the most detailed reconnaissance ever from within a pyrotechnic weather system, making observations and collecting samples that will help researchers to better understand the nature of these dramatic events and how they can impact Earth's climate. "Just being there was the most amazing experience I've ever had while working in science," Peterson said. Pyrocumulonimbus clouds (pyroCbs) only form when conditions are just right -- you need a special combination of atmospheric instability, moisture, and loads of wildfire heat to create an updraft.

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