Over the last five years, observations of tree height have become a major observation within The GLOBE Program. This is primarily due to several things: The launch of the NASA Ice, Cloud, and land Elevation Satellite-2 or ICESat-2, the start of the Trees Around the GLOBE Student Research Campaign, the release of The GLOBE Program’s GLOBE Observer Trees tool, and the ability to compare ground-based tree height observations, from GLOBE, to space-based observations of Earth’s tree heights from the NASA Ice, Cloud and land Elevation Satellite-2 or ICESat-2. In this blog, we will explore these various programs and methods of measuring and making sense of tree height observations through historical information, observations, and data metrics over the last five years.  >>

Building off of Amos et al. (2020)’s work, NASA intern Jessica Mo helped generate and implement quality checks for data submitted through GLOBE Observer’s citizen science protocols. Read on to learn what Jessica discovered through her analysis.  >>

The GLOBE Annual Meeting took place in Denver, Colorado, USA from 17-20 July, and showcased a variety of topics and presentations by GLOBE community members and keynote speakers.  >>

It was on January 31, 1971, when NASA launched the Apollo 14 spacecraft. Decades later, on December 11, 2022, the Orion Capsule successfully splashed down in the Pacific Ocean. But did you know that there were hundreds of tree seeds onboard both missions?  >>

Looking for a valentine for that special someone? Why not share the science and the love at the same time with GLOBE Observer valentines!  >>

A look back at the Trees Challenge from 2022, as well as what an active observation group in Pennsylvania has been up to related to measuring trees.  >>

From 12-16 December 2022, The GLOBE Program and members of the GLOBE community attended the American Geophysical Union’s Fall Meeting in Chicago, Illinois, an annual gathering of Earth scientists from around the world sharing their research and discoveries.  >>

From 11 October to 11 November 2022, we asked our volunteer scientists to help us estimate the number of trees in the areas around them and contribute to tree and climate science by sharing their observations of trees. The response was impressive! We received over 4700 observations from more than 750 individual participants! Read more in the challenge summary.  >>

The Araucária is an ancient tree whose ancestors populated the landscape before even the dinosaurs, more than 240 million years ago! Although once dominating the entirety of the Atlantic Forest, the Araucária is now an endangered species that occupies only 2% of its historic range.  >>

This is Rusty Low, scientist with the GLOBE Observer Science Team, reporting from the Amazon Rainforest in the Tapajós National Forest, Municipality of Belterra, Para, Brazil for the NASA GLOBE Trees Challenge 2022: Trees in a Changing Climate. My co-author for this blog is Erick Luiz Souza Silva. He is a graduate student at the Federal University of Brasilia.  >>