GLOBE connects students, teachers, scientists, and the public from around the world to better understand the Earth. @NASA @NSF @NOAA and U.S. State Dept.
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#ICYMI: Watch the GLOBE Program's 31st Anniversary Broadcast here. Thanks to everyone who joined us live to celebrate this incredible milestone! 🌏🥳
piped.video/IWmvBt18vYQ?si=jxds…
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Have you made a PACE Clouds observation yet?
Clouds observations taken within a 5-minute window of PACE passing overhead will help scientists on the NASA PACE mission, like Dr. Andy Sayer, compare ground-based observations of clouds to PACE data to refine the satellite’s cloud detection technologies.
If you need help getting started, watch the PACE Clouds Challenge training (also available in Spanish): tinyurl.com/clouds-challenge…
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Today is the 1st of October, and we are 15 days into the PACE Clouds Challenge, which has been extended to the 1st of November! Please visit tinyurl.com/pace-clouds-chal… to learn how your ground-based cloud observations can help NASA PACE scientists study how well PACE measures cloud edges and total cloud cover.
ALT Combined logo showing the PACE satellite, clouds, and vegetation with yellow and blue circles. There is also black text of varying sizes.
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#QuickGLOBETip for making GLOBE Mosquito observations!
Learn to identify mosquito habitats. Tip #8: Artificial containers, such as watering cans and other gardening tools, can provide a good environment for mosquito habitats.
Explore this page for more tips and resources: tinyurl.com/mosquito-habitat…
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Are you seeing color change in the trees around you?
Join the North American Phenology Campaign and help monitor and report plant phenology data to GLOBE’s long-term environmental record.
You can participate by monitoring leaves on individual trees or taking a landscape photo for NASA’s PACE satellite mission using GLOBE’s Land Cover tool.
Learn more at tinyurl.com/us-phenology
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Our September News Brief is now online and full of updates, resources, and opportunities you don’t want to miss:
🌎Upcoming Changes to GLOBE
📱Improve the GLOBE Observer App
📢 Global Data Collection Opportunities
💡 Regional Campaigns and Highlights
➕ Additional News, Information, and More!
Read the latest edition: conta.cc/4yV383U
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GLOBE Ireland invites you to join them tomorrow, the 1st of October at 10 am UTC, for this fun and interactive webinar to discover the forest-fire–air connection!
Hear from senior Earth science specialist, Brian Campbell, and forester and firefighter, Ciaran Nugent, as they share insight into the recent Irish wildfires and what we can do to help prevent forest fires.
Learn more and register at globe.gov/news-events/globe-…
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Please join us tomorrow, the 30th of September from 10:00 am ET to 10:45 am ET (14:00 UTC–14:45 UTC), for the "GLOBE Website Learning and Support: Account Creation Zoom Session.” Join us to learn about account types, email verification, organization affiliation, referral codes, and common permissions questions. Learn more and register at tinyurl.com/5n7y4w6m!
ALT Shareable with black text on a white to blue background with two logos.
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The PACE Clouds Challenge is underway!
From 15 September to 1 November, NASA is looking for your GLOBE Clouds observations taken within a 5-minute window of the PACE satellite passing overhead.
Check out our trainings, tips, and resources to help you get started! tinyurl.com/pace-challenge-t…
[Image shows a GLOBE Clouds observation (up, north, south, west, and east photos) mapped to a sky view of the PACE satellite (green dot) passing overhead.]
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We are deeply saddened to share that Sylivester Chaisamba, Assistant Country Coordinator for GLOBE Tanzania, recently passed away. Sylivester worked for the Tanzania Meteorological Agency and had served as Assistant Country Coordinator since 2015. A dedicated GLOBE trainer, he actively championed the GLOBE Program in Tanzania and throughout the Africa region. We extend our heartfelt condolences to his family, friends, colleagues, and the GLOBE Tanzania and Africa communities.
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GLOBE Ireland invites you to join them on the 1st of October at 10 am UTC for this fun and interactive webinar to discover the forest-fire–air connection!
Hear from NASA senior Earth science specialist, Brian Campbell, and forester and firefighter, Ciaran Nugent, as they share insight into the recent Irish wildfires and what we can do to help prevent forest fires.
Learn more and register at globe.gov/news-events/globe-…
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Did you know that the United States Department of Agriculture has designated August as "Tree Check Month?"
So, what does this mean? Since August is closing in on the end of summer in the Northern Hemisphere and the end of winter in the Southern Hemisphere, this is the most ideal time to check trees for pests and signs of damage.Throughout the month of August 2026, the Trees Around the GLOBE Campaign held a Tree Check Month Intensive Observation Period (IOP) for Tree Height and Land Cover. During the IOP, there were 617 tree height observations from 273 global sites in 22 countries and 423 land cover observations from 227 global sites in 25 countries. During the IOP, there were numerous observations that included metadata comments about the health of the trees that were being observed. Learn more about this IOP and past campaign IOPs at tinyurl.com/3fck3z3v!
ALT There are three global maps green dots, brown dots, and red rectangles around images of trees. There is also black text on a background of a satellite image of farm fields and white text. There is also a circular inset image of trees and a green ribbon with black text and a GLOBE and GLOBE Observer logo.
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#QuickGLOBETip for making GLOBE Clouds observations!
How covered is your sky? Tip #8: Give us your best estimate by comparing cloud coverage to the pictures within the app.
Explore this page for more tips and resources: tinyurl.com/cloud-tips
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“Hey PACE, do you see what I see?”
When NASA’s PACE satellite is passing over your location, use the GLOBE Observer app to collect a Clouds observation with photos.
Your observations will help PACE scientist Dr. Andy Sayer compare what we see from the ground with what PACE sees from space—and better understand how well the satellite detects cloud edges and total cloud cover.
Join the PACE Clouds Challenge, now extended to the 1st of November! Learn more at tinyurl.com/pace-clouds-chal….
New to GLOBE? Get started at observer.globe.gov/do-globe-….
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The GLOBE Program retweeted
The melting season for Arctic sea ice is about 40 days longer than in 1979. Much of that change happened prior to 2010, when the season length stabilized.
The findings come from a @NASA-led study of satellite observations of Arctic sea ice from 1979-2023. go.nasa.gov/4yKFreB
ALT Map of the Arctic with colors indicating how the sea ice melting season has changed from 2000 to 2009. Red indicates areas where the season grew longer. Blue indicates where it grew shorter. The map is mostly dark red, indicating an increase of about 5 days or more. Closer to the pole, the melting season has changed less dramatically. Credit: NASA
ALT Map of the Arctic with colors indicating how the sea ice melting season has changed from 2010 to 2023. Red indicates areas where the season grew longer. Blue indicates where it grew shorter. The map shows a mix of lighter red and blue, indicating smaller changes of only a few days. Credit: NASA
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The GLOBE Program retweeted
Arctic sea ice reached its yearly minimum extent on Sept. 12, 2026, @NASA and @NSIDC report.
The ice covered 1.78 million square miles, making it the 10th-lowest in the satellite record, tied with 2008, 2010, and 2025. go.nasa.gov/4howoJi
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Do you have a question about the GLOBE website? Join us next Wednesday to ask your questions.
On the last Wednesday of each month, we will hold a series of learning sessions offering friendly, practical support for the GLOBE.gov website. The first session, on the 30th of September at 10 am ET (14:00 UTC), will cover account creation and provide time for participants’ general website questions.
Learn about the upcoming sessions at tinyurl.com/website-learning….
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A new NASA PACE blog post highlights how GLOBE observations of clouds will be used by Dr. Andy Sayer from the PACE satellite mission to study whether PACE can provide data on total cloud cover in an area by distinguishing what is a cloud (and what’s not) and determining the exact edge of clouds. pace.odyseallc.net/blog.htm?…
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Join us today, at 1:00 pm (17:00 UTC), for the 97th Trees Around the GLOBE Campaign webinar, "The Timing of Nature with the NASA Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) Mission and the North American Phenology Campaign.” During this webinar, we will partner with the GLOBE Observer team to present about the PACE satellite as part of the September 2026 GLOBE Observer Connect event. PACE vegetation scientist, Skye Caplan, will present "Trees Are Just Big Plankton: Land Surface Science with the PACE Mission.” Following the PACE presentation, we will hear about the North American Phenology Campaign from the U.S. GLOBE Office. Learn more about Trees Around the GLOBE at globe.gov/web/trees-around-t…. Register for the webinar at observer.globe.gov/go-connec…!
ALT Shareable showing multiple NASA PACE mission logos a person's face, and two workshop announcements with white and black text.
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Are you tracking the changing leaf colors? You can help verify a unique new PACE leaf color product by making GLOBE Land Cover observations of forested areas!
Join us tomorrow, on the 22nd of September at 1 pm ET (17:00 UTC), for the GO Connect webinar: Tracking Fall Color with PACE. Hear from PACE vegetation scientist, Skye Caplan, who will talk about NASA’s PACE satellite and share the ways she is using PACE data to study plants, which includes a new leaf color product.
Learn more and register: tinyurl.com/tracking-fall-pa…
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Learn how GLOBE Clouds observations will be used in research to help NASA refine the PACE (Plankton, Aerosol, Cloud, ocean Ecosystem) satellite’s cloud detection technologies by watching the Meet PACE webinar recording: tinyurl.com/meet-pace-webina….
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