Lamont-Doherty Earth Observatory

@lamont

Building fundamental knowledge about the origin, evolution, and future of our planet since 1949 (lamont.columbia.edu).

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Lamont-Doherty Earth Observatory@lamont· 14d

How can AI can support scientific research without undermining human judgment, ethics, or equity? This question is shaping an emerging effort at @lamont.columbia.edu led by climate scientist Marco Tedesco to think more deliberately about AI: https://bit.ly/4fDvDuX

Marco Tedesco on the Russell Glacier, southwest Greenland, summer 2018. Credit: Kevin Krajick

Lamont-Doherty Earth Observatory@lamont· 19d

Climate change is already reshaping our brains. How do we act earlier, build resilience, and change the trajectory for future generations, ask @lamont.columbia.edu climate scientist Marco Tedesco and neuroscientist and Neuro Climate Working Group founder Burcin Ikiz: https://bit.ly/4yBmKuP

Sign displaying “Excessive Heat Warning In Effect” during triple-digit heat along the highway in New Jersey. Credit: Famartin via Wikimedia Commons

Lamont-Doherty Earth Observatory@lamont· 26d

Air pollution expert @dwesty.bsky.social of @lamont.columbia.edu discusses this summer’s wildfires and resulting air quality in New York City and beyond. Learn More: https://lamont.columbia.edu/news/wildfire-smoke-returns-what-know-about-weeks-air-quality

Photo from the National Weather Service office on July 15 in Upton, New York, with the sky obscured by a thick layer of smoke. Credit: NWS Forecast Office New York, NY via Wikimedia Commons

Lamont-Doherty Earth Observatory@lamont· 29d

🌟 Folarin Kolawole Receives 2026 National Geographic Wayfinder Award 🌳 Forests May Store Less Carbon than Expected 🌋 CO2 and Water Played Key Roles in Historic Mount Etna Eruptions 🗓️ Science Saturdays at LDEO Field Station | Oct 17 LDEO Open House 📩 lamont.columbia.edu/news/newsletter

Marie Tharp with the iconic Heezen-Tharp World Ocean Floor map, a landmark in cartography. Credit: Lamont-Doherty Earth Observatory and the estate of Marie Tharp

Lamont-Doherty Earth Observatory@lamont· Jul 11

Study by @lamont.columbia.edu volcanologists & colleagues shows that gas bubbles played central role in how fast & far lava traveled from Kīlauea’s 2018 eruption, and that flow models need to account for bubbles to more accurately forecast where lava will stop: lamont.columbia.edu/news/study-r...

Surface velocity measurements of a section of the fissure 8 lava flow using drone video taken on June 22, 2018. The colors represent the different flow velocities at different parts of the flow. Credit: Einat Lev

Lamont-Doherty Earth Observatory@lamont· Jul 9

Help @nyseagrant.bsky.social, @lamont.columbia.edu, @columbiaseas.bsky.social build an AI system to clean up litter in NY’s rivers, lakes, and sea. Just photograph human-made litter like plastic, metal, textiles in waterways and share on MyCoast app. View instructions (PDF): https://bit.ly/3RqDDYj

Instructions for taking photos and submitting the through the MyCoast app to contribute to Help Sea Grant NY, Lamont-Doherty Earth Observatory, and Columbia Engineering build an AI system that cleans up litter in New York’s rivers, lakes, and sea.

Lamont-Doherty Earth Observatory@lamont· Jul 8

Researchers studying a lake drainage event in Greenland determined that large amounts of meltwater can lead to massive glacier calving events and accelerate ice sheet loss, contributing to sea level rise. Via GlacierHub / State of the Planet: news.climate.columbia.edu/2026/07/06/m...

Drone image of Sermeq Kujalleq in the Kangia icefjord, one of West Greenland’s active glaciers with a massive calving response. Credit: Andrea Kneib-Walter, University of Zürich and Guillaume Jouvet, University of Lausanne

Lamont-Doherty Earth Observatory@lamont· Jul 3

Flags of Science CCL by Selva Ozelli honors America's 250th anniversary and the groundbreaking research of @lamont.columbia.edu scientists, inviting reflection on discovery, creativity, and the enduring pursuit of knowledge. On display through June 2027. Learn more: https://bit.ly/4eDFQsg

Space Flag CCL by Selva Ozelli features rows and columns of blue stars, silver stars, and orange suns in the shape of a flag

Tree of Life/Tectonic Flag CCL by Selva Ozelli features rows and columns of circles and hearts in blue, red, and white in the shape of a flag

Ocean Lovers to the Core Flag CCL by Selva Ozelli features rows and columns of blue stars and circles with floral patterns in the shape of a flag

Lamont-Doherty Earth Observatory@lamont· Jun 26

🌊🚢 Ever wonder what it’s like to live and work on a research ship in the middle of the ocean? Meet R/V Marcus G. Langseth chief science officer Cody Bahlau who travels the world studying our oceans while also demystifying ocean research for school children. 🐳 Learn more: https://bit.ly/4g8yvlI

Cody Bahlau in the Langseth control room livestreaming to a first-grade class in Adrian, Michigan for the Desk to Deck program. Credit: Cody Bahlau

Lamont-Doherty Earth Observatory@lamont· Jun 23

From an atmospheric CO2 puzzle solved to a Pacific cooling mystery, it's our new State of the Planet roundup of @lamont.columbia.edu and @climate.columbia.edu research: https://news.climate.columbia.edu/2026/06/22/june-research-roundup-select-papers/

A blurry, yellowed view of cars on a highway, during a sandstorm in Giza, Egypt. Credit: Tamer Soliman

Lamont-Doherty Earth Observatory@lamont· Jun 18

A Cornell-led study co-authored by @lamont.columbia.edu geochemist/volcanologist Terry Plank and colleagues found very different mechanisms behind two historic eruptions of Italy’s Mount Etna, with implications for assessing the risk of future eruptions: https://bit.ly/4uF9QbT

Mount Etna volcano in Sicily, Italy. Courtesy: Esteban Gazel

Lamont-Doherty Earth Observatory@lamont· Jun 17

At @swais2c.bsky.social Crary Ice Rise Core Workshop, PhD student Kelly Fenton-Samuels helped characterize longest sediment core ever recovered from beneath an ice sheet, containing unique record of environmental and ice-sheet change spanning millions of years. Learn more: swais2c.aq/media/core-w...

A visit from 1News New Zealand during the SWAIS2C core description workshop. Credit: Kelly Fenton-Samuels

Freshly opened sediment core sections from the record-breaking SWAIS2C drill core, preserving a unique archive of West Antarctic Ice Sheet history. Credit: Kelly Fenton-Samuels

Sediment core sections being imaged using a high-resolution line-scan system to permanently archive the fresh core surface before any color changes occur. Credit: Kelly Fenton-Samuels

Lamont-Doherty Earth Observatory@lamont· Jun 15

Even as trees photosynthesize late into the year, their growth stops by mid-summer, which impacts their carbon uptake, finds a new study of oak trees led by @lamont.columbia.edu ecoclimatologist @mukund24rao.bsky.social. ➡️ Learn more: https://bit.ly/4fRTE3v

A sensor called a point dendrometer attached to a tree used to estimate tree hydration status and growth. Credit: Mukund Rao

Lamont-Doherty Earth Observatory@lamont· Jun 12

How much and why did ice sheets melt during the last interglacial? Members of HISEAS team (hiseas.org) are in Southern Cook Islands to understand sea level changes over time by studying information left behind in the makatea or limestone terraces.

HISEAS field team on Mangaia, Cook Islands.

Blake Dyer and Billy D’Andrea inspecting a spur of fossil coral reef from the last interglacial period (125,000 years ago). Credit: Jacky Austermann

PhD student Tilli Steadman samples fossil corals on Mangaia, Cook Islands. Credit: Jacky Austermann

Coastline of Mitiaro, Cook Islands with modern and fossil coral reefs. Credit: Blake Dyer

Lamont-Doherty Earth Observatory@lamont· Jun 10

📣 Job Alert! Lamont-Doherty Earth Observatory in Palisades, NY seeks a research assistant, associate or professor with expertise in fundamental research on basic Earth sciences. Learn more/apply and please share! ➡️ https://academic.careers.columbia.edu/#!/184461

Aerial View of the Lamont-Doherty Earth Observatory campus in Palisades, NY. Credit: Nick Frearson

Lamont-Doherty Earth Observatory@lamont· Jun 9

👏 Congratulations to @lamont.columbia.edu structural geologist Folarin Kolawole, recipient of 2026 National Geographic Wayfinder Award, which recognizes bold changemakers whose work is expanding our understanding of the planet and helping to protect its future. ➡️ lamont.columbia.edu/news/geologi...

Geologist Folarin Kolawole holding a rock with text 2026 Wayfinder Award Recipient.

Lamont-Doherty Earth Observatory@lamont· Jun 8

🌊 Happy UN #WorldOceansDay, which reminds us to be active guardians of the ocean’s future! Our scientists have spent decades cataloging and reimagining the ocean’s critical role in our lives. Learn more about some of our recent advances in ocean science and education: https://bit.ly/4ogTuVs

Sunrise from the galley of the R/V Marcus G. Langseth off the coast of the Carolinas heading south to Puerto Rico. Credit: Christina DeLorenzi

Lamont-Doherty Earth Observatory@lamont· Jun 4

🌌 How CO2 Cools Upper Atmosphere—and Warms Earth Below 🌊 Lessons from “Near-miss” Tsunami in Alaskan Cruise Area ❄️ Signs of Diminished Ross Ice Shelf in Antarctic Dust 🗓️ Jun-Sep Science Saturdays at LDEO Field Station | Oct 17 LDEO Open House 📩 lamont.columbia.edu/news/newsletter

Lamont's R/V Marcus G. Langseth in the moonlight during the Queen Charlotte Fault Expedition, August 2021, Haida Gwaii. Credit: Cody Bahlau

Lamont-Doherty Earth Observatory@lamont· May 29

🐦 A visit from Rockland Audubon Society, which helped fund bird-strike deterrents on Lamont-Doherty Earth Observatory windows, included seeing and/or hearing 44 species of birds! 💚 Campus stewardship: https://lamont.columbia.edu/leisc

Rockland Audubon Society visitors on LDEO campus.

Lamont-Doherty Earth Observatory@lamont· May 28

On May 30, World Fish Migration Day, join scientists and educators along the lower Hudson River Estuary to celebrate the vital role played by estuaries in the life cycle of many ocean fish species. At our Hudson River Field Station, take part 12-4pm in our fish count! 🐟 https://bit.ly/3PFXulx

Educators and participants scan the net for species at World Fish Migration Day. Credit: Hudson River Field Station

Lamont-Doherty Earth Observatory@lamont· May 27

Antarctica’s Ross Ice Shelf and the West Antarctic Ice Sheet may have been far smaller during one of Earth’s most recent warm periods, according to a new @natgeosci.nature.com study co-authored by @lamont.columbia.edu geochemist Sarah Aarons. Learn more: https://bit.ly/4wUYSBr

A drill tent at the Allan Hills Blue Ice Area in East Antarctica. Credit: Austin Carter

Lamont-Doherty Earth Observatory@lamont· May 20

📣 Job Alert! Lamont-Doherty Earth Observatory in Palisades, NY seeks a postdoctoral research scientist in the broad area at the intersection of radiation, circulation, and the structure of Earth’s atmosphere. Learn more/apply and please share! ➡️ https://academic.careers.columbia.edu/#!/183751

Clouds at sunrise over the Atlantic Ocean near Barbados during the ATOMIC field experiment. Credit: Robert Pincus

Lamont-Doherty Earth Observatory@lamont· May 19

🏆 Congratulations to our 2026 Scientific Excellence in Mentoring awardee Dorothy Peteet, Excellence in Technical Mentoring awardee James Ross, and Community Impact awardee Jacqueline Austermann for their outstanding contributions to LDEO community! ➡️ https://lamont.columbia.edu/about/lamont-awards

Excellence in Scientific Mentoring awardee Dorothy Peteet with LDEO interim director Steve Goldstein.

Excellence in Technical Mentoring awardee James Ross with LDEO interim director Steve Goldstein.

Community Impact awardee Jacky Austermann with LDEO interim director Steve Goldstein.

Lamont-Doherty Earth Observatory@lamont· May 15

Scientists estimate that Indonesia will lose its two remaining glaciers by 2030. “The glaciers here could be considered the canary in the coal mine—especially for countries with a small amount of glacial ice to begin with,” says LDEO geologist Mike Kaplan. Via GlacierHub: https://bit.ly/42ABBXG

Aerial view of remaining glacial ice on Puncak Jaya, Papua. Credit: BMKG

Lamont-Doherty Earth Observatory@lamont· May 15

👏 Congratulations to Lamont-Doherty Earth Observatory climate scientist Marco Tedesco, co-author of a #TopViewedArticle in @wiley.com Journal of Geophysical Research: Atmospheres on behalf of @agu.org, ranked within the top 10% of most-viewed papers published in 2024! ➡️ https://bit.ly/4dJVwcN

Wiley Top Viewed Article Certificate for Marco Tedesco for The Effect of Physically Based Ice Radiative Processes on Greenland Ice Sheet Albedo and Surface Mass Balance in E3SM published in Journal of Geophysical Research: Atmospheres

Lamont-Doherty Earth Observatory@lamont· May 14

In a tradition honoring #EarthDay, Lamonters hopped on their bikes to commute from both sides of the Hudson to the Lamont-Doherty Earth Observatory campus in Palisades, NY. What a scenic, green way to commute with friends and colleagues, highlighting alternatives to fossil fuel-powered vehicles!

Lamonters and their bikes with the George Washington Bridge in the background on May 11, 2026 Bike-to-Work Day.

Lamont-Doherty Earth Observatory@lamont· May 12

Researchers Sean Cohen, Robert Pincus, and Lorenzo Polvani of Lamont-Doherty Earth Observatory have solved a long-standing atmospheric puzzle: how rising carbon dioxide cools the stratosphere even as it warms Earth’s surface and lower atmosphere. ➡️ https://bit.ly/4wqYqKQ

View of Earth taken during ISS Expedition 66. Credit: Earth Science and Remote Sensing Unit, NASA

Lamont-Doherty Earth Observatory@lamont· May 10

🚢 After a long Pacific transit, R/V Marcus G. Langseth arrived in Majuro in the Marshall Islands, one of the most geographically unique regions on Earth, and kicked off Expedition MGL 2605. Learn more: instagram.com/p/DYF_P56jiZq

Google Earth map of the Langseth's arrival at Majuro in the Marshall Islands.

Lamont-Doherty Earth Observatory@lamont· May 7

Huge landslide in Alaska’s Tracy Arm fjord triggered a tsunami, creating a near-miss in a busy cruise area. Study led by @watershedlab.bsky.social with a team including LDEO seismologist Göran Ekström connects the event to glacier retreat + offers lessons on reducing dangers: https://bit.ly/4uvj4aS

Aerial photo of the highest runup resulting from the August 10, 2025 landslide-triggered tsunami in Tracy Arm, taken during a U.S. Geological Survey field reconnaissance flight on August 13, 2025. View direction is approximately south. Credit: John Lyons/U.S. Geological Survey

Lamont-Doherty Earth Observatory@lamont· May 7

🌍 Cradle of Humankind Is Tearing Apart 🌳 Tree Rings Show Hurricane Impacts/Sea-Level Stress 🌊 Sinking Land Drives Hidden Flood Risk in Java ☁️ Complicated Future for Atmosphere's "Detergent" 🗓️ 5/13 Heart of Climate Justice, 5/30 World Fish Migration Day 📩 lamont.columbia.edu/news/newsletter