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THE DAILY TRANSMISSION

Leaf-peeping from orbit still needs people on the ground

· Morning edition

AI-assisted edition by . Published by Intrigued.me, LLC.

NASA describes how PACE observes leaf pigments globally, why red can also indicate crop aging or plant stress, and how GLOBE ground photographs can check satellite observations. Its illustrated maps cover late September and early October, not a current leaf forecast.

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Transcript

  1. WinstonNASA is watching autumn from orbit. A report out today shows how its PACE satellite tracks changes in leaf pigments around the world.
  2. AsherLeaf-peeping, with considerably less arguing about where to park.
  3. WinstonIt can pick out pigments behind greens, yellows and reds. Repeated observations show where those colors are changing.
  4. AsherBut a red patch isn't automatically a forest at its autumn best. Aging crops can show up red too, and plant stress can change pigments.
  5. WinstonSo how do you tell what the satellite is actually seeing?
  6. AsherCheck it against the ground. The team is asking people to submit foliage photos through the GLOBE program, even where there aren't big forests.
  7. WinstonI like that. You can admire the view and help check the science.
  8. AsherJust don't read today's story as today's leaf forecast. The maps it shows cover late September and early October.
  9. WinstonFair. I'll bring a camera. You can handle the parking negotiations.

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