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Satellite mission to ‘weigh’ Earth’s 1.5 trillion trees underway

  • On April 29, 2025, the Biomass satellite was sent into orbit from Kourou, French Guiana, aboard a Vega-C rocket to observe and analyze Earth's forests.
  • The mission responds to the lack of precise data on global forest carbon stocks, especially in tropical regions that absorb 75% of carbon but are hard to monitor on the ground.
  • Biomass uses a 12-meter deployable P-band synthetic aperture radar operating at 70 cm wavelength to penetrate dense canopies and measure woody biomass as a proxy for stored carbon.
  • Biomass will collect data for at least five years, with the first 18 months focused on tomography to map forest structure, enabling improved carbon tracking and climate modeling.
  • The mission aims to reduce uncertainties in carbon stock estimates, assist in tracking deforestation, and support environmental policy, marking a milestone in Earth observation programs.
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BBC News broke the news in United Kingdom on Monday, April 28, 2025.
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