Science, Space and Technology News 2024
NASA scientists have found that satellite-tracked plant fluorescence can predict flash droughts months in advance, aiding mitigation and understanding carbon cycle impacts during droughts. Credit: NASA’s Scientific Visualization Studiosatellites track this subtle glow, offering early warnings of potential flash droughts across diverse landscapes.
While the glow is invisible to the naked eye, it can be detected by instruments aboard satellites such as NASA’s Orbiting Carbon Obsevatory-2 . Launched in 2014, OCO-2 has observed the U.S. Midwest But by gradually drawing down the water supply in the soil, the plants created a risk. When extreme temperatures hit, the already low moisture levels plummeted, and flash drought developed within days.
For this reason, plant fluorescence “shows promise as a reliable early warning indicator of flash drought with enough lead time to take action,” said Nicholas Parazoo, an Earth scientist atJordan Gerth, a scientist with the National Weather Service Office of Observations who was not involved in the study, said he was pleased to see work on flash droughts, given our changing climate. He noted that agriculture benefits from predictability whenever possible.
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