Oceanography Archives - State of the Planet

argo ship ocean freshening

North Atlantic Is Getting Less Salty, But It’s Too Soon to Blame Climate Change

Researchers report a sharp drop in salinity in the North Atlantic Ocean over the last decade, providing the most detailed look yet at the region’s changing ocean conditions. A continued decline could impact fish stocks and the ocean’s ability to absorb CO2.

by |March 13, 2018
hugh ducklow

Live from Antarctica: Scientists #TakeoverNSF

On January 31 at 1:00 p.m. EST, Lamont-Doherty’s Hugh Ducklow and his colleagues will use National Science Foundation social media to discuss their research on Antarctic ecology.

by |January 31, 2018
Gwenn Hennon demonstrates experiment aboard the RV Kilo Moana

Eavesdropping on the Ocean’s Mighty Microorganisms

Now, nearing the end of our three-week cruise of the North Pacific off Hawaii, we are working to understand how these tiny bacteria connect and communicate with one another.

by |July 13, 2017

How Drones are Advancing Scientific Research

Where once scientists could only observe earth from above by using manned aircraft or satellites, today they are expanding, developing and refining their research in a variety of ways thanks to drones.

by |June 16, 2017

Transforming a Passion for Oceans into Discovery

Sustainability Management graduate Melissa Meggiolaro (’17) interviews Lamont-Doherty Earth Observatory oceanographer Arnold Gordon.

by |June 9, 2017

Meltwater Lakes Existed Under Antarctic Ice in Ancient Times

In recent years, scientists have discovered hundreds of lakes lying hidden deep beneath the Antarctic ice sheet. Now a team of researchers has found the remains of at least one sub-ice lake that existed when the ice was far more extensive, in sediments on the Antarctic continental shelf.

by |June 1, 2017

Scientists Say They Now Know Why Antarctic Meltwater Stays Below Ocean Surface

Up to now, it has been a mystery why much of the fresh water resulting from the melting of Antarctic ice shelves ends up in the depths instead of floating above saltier, denser ocean waters. Scientists working along one major ice shelf believe they have found the answer.

by |February 2, 2017

Project Maps the Chemistry of the World’s Oceans

Until recently, too little data existed about the distribution of trace elements and nutrients in the oceans to provide a global picture. In 2002, a group of scientists connected with Columbia University’s Lamont-Doherty Earth Observatory set out to fill those gaps.

by |August 10, 2016

Zeroing in on Life Around a Hydrothermal Vent

Vicki Ferrini has spent a lot of time working on mapping the ocean floor, and now she’s sailing in the South Pacific to get a closer look.

by |April 13, 2016

In a Vast Ocean, Studying Impact of the Tiniest Creatures

Vast portions of the oceans contain low levels of the nutrients that normally sustain life. Yet these areas are not devoid of life. Once thought to be biological deserts, recent research has shown that such nutrient-poor marine systems could significantly contribute to the amount of carbon dioxide that is trapped into the deep ocean, influencing Earth’s climate.

by |March 3, 2016