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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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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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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#ICYMI. On the 27th of August 2026, Dr. Andy Sayer from the NASA Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission joined Marilé Colón Robles from the GLOBE Clouds team to introduce PACE and a new Clouds challenge to collect clouds observations aligned with PACE worldwide. Dr. Sayer discussed how GLOBE clouds data will be useful to his research, and Ms. Colón Robles described the process of collecting data with the GLOBE Observer app during the PACE Clouds Challenge, which runs from 15 September to 15 October 2026. To view the video, please visit piped.video/nZnHF1PrsFQ?si=eXFs…!
ALT Combined logo showing the PACE satellite, clouds, and vegetation with yellow and blue circles.
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GLOBE has several exciting initiatives coming up! Stay connected by signing up for the GLOBE News Brief for the latest GLOBE news, opportunities, and events! Subscribe here: lp.constantcontactpages.com/…
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#QuickGLOBETip for making GLOBE Mosquito observations!
Learn to identify mosquito habitats. Tip #7: Man-made water sources, such as yard drainage, can provide an ideal environment for mosquito habitats.
Explore this page for more tips and resources: tinyurl.com/mosquito-habitat…
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Join us in 1 week 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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The PACE Clouds Challenge starts tomorrow!
Help scientists on NASA’s PACE satellite mission by taking Clouds observations within a 5-minute window of PACE passing overhead. Your photos will help improve PACE’s cloud detection technologies. Not sure how to get started? Visit tinyurl.com/pace-clouds-chal… to learn how to set up alerts for when PACE is overhead and take a GLOBE Clouds observation, and to find out more about PACE!
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Do you have a question about the GLOBE website?
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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When will the PACE satellite next pass over your location?
Check out this short video tutorial to learn how to turn on satellite flyover notifications for your current location on the GLOBE Observer app.
Satellite flyover timing will be especially important for the upcoming PACE Clouds Challenge, which starts the 15th of September.
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¡Mañana ofreceremos un seminario web de capacitación para voluntarios del Reto PACE y Nubes en español!
Adquiere las habilidades necesarias para convertir tus observaciones cotidianas del cielo en apoyo para la investigación científica de la Tierra de la NASA durante el Reto PACE y Nubes. Aprende a estimar con precisión el porcentaje de cobertura nubosa, registrar tus observaciones dentro del intervalo crítico de 5 minutos del sobrevuelo del satélite PACE utilizando la aplicación GLOBE Observer y revisar las imágenes de satélite correspondientes que la NASA envía a los usuarios.
Regístrate en el seminario web de capacitación en español del 11 de septiembre, a las 3:00 p. m. ET (19:00 UTC): tinyurl.com/es-clouds-challe…
@NASA_es
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We are holding a PACE Clouds Challenge volunteer training in Spanish tomorrow!
Gain the skills needed to turn everyday sky observations into support for NASA Earth science research during the PACE Clouds Challenge. Learn how to accurately estimate cloud cover percentage, record observations within the critical 5-minute PACE overpass window using the GLOBE Observer app, and review the matched satellite imagery NASA will send back to users.
Register for the 11 September, 3 pm ET (19:00 UTC) training in Spanish: tinyurl.com/es-clouds-challe…
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Did you know that GLOBE observations now match to 10 satellites, including 6 for your cloud observations and 4 for your land cover observations? Learn more about satellite data matching and how you become part of these exciting opportunities to collect data for @NASA scientists. tinyurl.com/muz99fa8!
ALT Cartoon image of two people on the Earth with a satellite overhead. There are also clouds, sky and five arrows.
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#QuickGLOBETip for making GLOBE Clouds observations!
Are there contrails in your sky? Tip #6: You can report contrails as well as clouds. Contrails are straight-line clouds.
Explore this page for more tips and resources: tinyurl.com/cloud-tips
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Your GLOBE Clouds observations can help NASA scientists refine cloud detection technology on the PACE satellite!
Join the PACE Clouds Challenge from the 15th of September to the 15th of October 2026 and share your clouds observations to see how they compare to observations taken by satellites above. Clouds observations taken within a 5-minute window of PACE passing overhead will help NASA scientists like Dr. Andy Sayer compare ground-based observations of clouds to PACE data to get a sense of how well PACE measures cloud edges and total cloud cover.
Learn how to get started at tinyurl.com/pace-clouds-chal….
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Join us in 2 weeks 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 team up 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 give the presentation "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… and GLOBE Observer Connect 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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Will you be joining the PACE Clouds Challenge?
Learn how to participate in the challenge at an upcoming training webinar on the 9th of September at 3 pm ET (19:00 UTC). Gain the skills needed to turn everyday sky observations into support for NASA Earth science research during the PACE Clouds Challenge. Learn how to accurately estimate cloud cover percentage, record observations within the critical 5-minute PACE overpass window using the GLOBE Observer app, and review the matched satellite imagery NASA will send back to users.
A training in Spanish will be held on the 11th of September at 3 pm ET (19:00 UTC).
Register for the training: tinyurl.com/clouds-challenge…
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If you’re in the U.S. you might be traveling for the long weekend. As you see forested landscapes of changing color, take a Land Cover observation! These observations will be used by NASA PACE satellite team members to study plants on land using a new leaf color product.
Staying close to home? Continue to monitor a local tree using the Green-Down protocol.
Learn more about ways to participate in the North American Phenology Campaign: tinyurl.com/us-phenology
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Your GLOBE observations can now match to 10 satellites!
With the addition of PACE, your Clouds observations can be matched to six satellites and your Land Cover observations to four satellites. Why try to match the timing of your observation to a satellite? When you do, you can receive an email from NASA that provides satellite data aligned with your observation location.
For Clouds observations, aim to make your observation within 15 minutes of a satellite passing overhead to receive a match. For Land Cover observations, matching is available for every observation.
Learn more about GLOBE satellite matching at tinyurl.com/match-10-satelli….
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You may have recently heard that NASA's PACE (Plankton, Aerosol, Cloud and ocean Ecosystem) satellite is the latest NASA Earth-observing mission whose satellite data is the latest addition to the GLOBE satellite matching emails. You can learn all about the PACE Mission at the NASA Scientific Visualization Studio’s “PACE Mission Gallery” at svs.gsfc.nasa.gov/gallery/pa…!
ALT Still image showing the orbit of the NASA Plankton, Aerosols, Cloud, ocean Ecosystem (PACE) satellite around the Earth.
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#QuickGLOBETip for making GLOBE Mosquito observations!
Learn to identify mosquito habitats. Tip #6: Shorelining pools near bigger bodies of water (bay or ocean) can provide a good environment for mosquito habitats.
Explore this page for more tips and resources: tinyurl.com/mosquito-habitat…
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Have you been keeping track of the changing leaf colors using GLOBE?
Join us on the 22nd of September at 1 pm ET (17:00 UTC) for the GO Connect: Tracking Fall Color with PACE. Hear from PACE vegetation scientist, Skye Caplan, who will introduce NASA’s PACE satellite and share the ways she is using PACE data to study plants on land, including the new leaf color product.
Learn more and register: tinyurl.com/tracking-fall-pa…
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You can do a Clouds observation in ~5 minutes while waiting for a bus or even while waiting for a rocket to launch! Check out these observations taken during the launch of the Nancy Grace Roman Space Telescope on Sunday.
Learn how to take your own Clouds observations: observer.globe.gov/do-globe-…
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🛰️Help GLOBE reach 2 million satellite matches by April 2027!
To date, NASA has matched 1,756,916 GLOBE observations to satellite data. Submit Clouds or Land Cover observations in the GLOBE Observer app, and if they align with satellites passing overhead, they will count toward our goal of 2 million matches. You’ll even get an email from NASA with satellite imagery matching your observation so you can compare your view on the ground with what is seen from space.
243,084 more matches to go…
Get started today at observer.globe.gov/.
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🛰️Help GLOBE reach 2 million satellite matches by April 2027!
To date, NASA has matched 1,756,916 GLOBE observations to satellite data. Submit Clouds or Land Cover observations in the GLOBE Observer app, and if they align with satellites passing overhead, they will count toward our goal of 2 million matches. You’ll even get an email from NASA with satellite imagery matching your observation so you can compare your view on the ground with what is seen from space.
243,084 more matches to go…
Get started today at observer.globe.gov/.
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Are you up for a challenge? Join us on Wednesday, 9 September 2026, at 3:00 pm ET (19:00 UTC), for the “PACE Clouds Challenge 2026: Volunteer Training Webinar.” The webinar will prepare you to contribute ground observations to support NASA's PACE satellite mission by learning how to accurately estimate cloud cover percentage, record observations within the critical 5-minute PACE overpass window using the GLOBE Observer app, and review the matched satellite imagery NASA will send back to users. Learn more, and register at, tinyurl.com/7p5t5nue!
ALT Two photos of people holding electronic instruments skyward. There are also two logos shown in the image.
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Our August News Brief is now online and full of updates, resources, and opportunities you don’t want to miss (including two upcoming webinars with scientists):
🛰️ GLOBE Observations Now Matched to Ten Satellites!
🧪 Hear from NASA Missions
💻 Announcing a New Virtual Series
📱 Seeking Input on the GO App
🌏 Regional Coordination
📢 Global Data Collection Opportunities
💡 Regional Campaigns and Highlights
➕ Additional News, Information, and More!
Read the latest edition: conta.cc/4wTVJ3C
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Are you seeing smoke from a wildfire?
Smoke from wildfires can travel hundreds, even thousands, of miles, obscuring our skies and affecting air quality. If you see or smell smoke from a wildfire event, and it is safe to do so, take a Clouds observation to document the spread of wildfire smoke. See photos from recent GLOBE observations below.
Learn more at tinyurl.com/globe-wildfire-s….
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#QuickGLOBETip for making GLOBE Clouds observations!
What cloud types are in your sky? Tip #6: Not sure what type of clouds you see? Just match them to the clouds within the app.
Explore this page for more tips and resources: tinyurl.com/cloud-tips
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Join us today, at 12 pm (16:00 UTC), for the latest GLOBE Observer Connect event. Dr. Andy Sayer and Dr. Carina Poulin from the Plankton, Aerosol, Cloud, ocean Ecosystem, or PACE Mission, will join Marilé Colón Robles from the GLOBE Clouds team to introduce PACE and a new Clouds Challenge to collect observations aligned with PACE passing overhead. Learn more and register at observer.globe.gov/go-connec…!
ALT Shareable showing a rendition of the PACE satellite in space, over the Earth with clouds, next to white text on a blue background.
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Did you know that this week is #WorldWaterWeek? Agriculture across the planet relies on water supply and irrigation and NASA/USGS Landsat satellites help farmers track crop production, assess crop health, and monitor water use across their farmland. To learn more, please check out this video, “Landsat: Farming Data from Space,” from the NASA Scientific Visualization Studio, at svs.gsfc.nasa.gov/13543/!
ALT Satellite image showing fields, land, homes, and rivers (water). there is white text over a blue background with a red vertical stripe to the left of the text.
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Share your Clouds photos with NASA scientists during the PACE Clouds Challenge!
When the PACE satellite is passing over your location, submit Clouds observations using the GLOBE Observer app. Scientists can then compare what you observed from the ground with PACE satellite data to study how well the satellite measures cloud edges and total cloud cover.
The challenge starts the 15th of September. Learn more about the challenge and the upcoming training webinars in English and Spanish: tinyurl.com/pace-clouds-chal…
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Here is a data update of how many (and where they are coming from) tree height and land cover observations have come in so far for the August 2026 Tree Check Month IOP for Tree Height and Land Cover!
ALT Two global maps showing green dots (tree height locations) and brown dots (land cover locations) over a background showing a satellite image of farmland. There is also a small circular logo of trees and a green ribbon with black text. There is also black text on the main body of the large image.
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Pick your favorite deciduous tree this fall and participate in the North America Phenology Campaign to report its color change over time.
Check out our plant color guides to help you estimate the dominant color present in leaves, shrubs, and grasses, or use our printable phenology ruler, which includes a color guide: tinyurl.com/plant-color-guid….
Not in North America? You can still participate by monitoring green-up and green-down: tinyurl.com/green-up-green-d…
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It’s the last week to participate in our August 2026 Tree Check IOP! Share your Tree Height and Land Cover observations, noting any pests or signs of damage in the trees or surrounding land cover. Learn more: tinyurl.com/tree-check-iop
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Are you participating in the North America Phenology Campaign?
Your participation can help monitor and report plant phenology data to contribute to GLOBE's long-term environmental record.
Check out these helpful step-by-step tutorials to help you choose an observation site, make an observation, and upload your findings to the GLOBE database: tinyurl.com/phenology-tutori…
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We are excited to announce the addition of NASA’s PACE (Plankton, Aerosol, Cloud and ocean Ecosystem) satellite data to the GLOBE satellite matching emails! Any observations made within 15 minutes of a PACE satellite passing overhead can be matched with PACE satellite data.
After making an observation, keep an eye out for our personalized NASA “Satellite Comparison” email, which will include details from your observation and matching satellite data collected around the same time and location.
Learn more about satellite comparisons: globe.gov/web/s-cool/home/sa…
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This #WorldMosquitoDay, help mitigate the risk of mosquito-borne illnesses with the GLOBE Mosquito Habitat Mapper. Your observations of mosquito habitats can help scientists who model and forecast potential disease outbreaks across geographic areas.
Learn how to get started at observer.globe.gov/do-globe-….
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Join us in one week, on the 27th of August at 12 pm (16:00 UTC), for the latest GLOBE Observer Connect event. Dr. Andy Sayer and Dr. Carina Poulin from the Plankton, Aerosol, Cloud, ocean Ecosystem, or PACE Mission, will join Marilé Colón Robles from the GLOBE Clouds team to introduce PACE and a new Clouds Challenge to collect observations aligned with PACE passing overhead. Learn more and register at observer.globe.gov/go-connec…!
ALT Shareable showing a rendition of the PACE satellite in space, over the Earth with clouds, next to white text on a blue background.
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#QuickGLOBETip for making GLOBE Mosquito observations!
Learn how to identify mosquito habitats! Tip #5: Muddy vehicle or animal tracks are just a couple of places where you can find a mosquito habitat.
Explore this page for more tips and resources: tinyurl.com/mosquito-habitat…
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You can watch the webinar recording here: piped.video/watch?v=wyyszihn…!
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You can watch the webinar recording here: piped.video/watch?v=WDFGgU2P…!
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You can watch the webinar recording here: piped.video/watch?v=WbZjhWfW…!
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You can watch the webinar recording here: piped.video/watch?v=0xf19G2R…!
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