JAN 15, 2019 1:33 PM PST

Scientific gaps in ocean warming research

Research published recently in PNAS attempts to shed light on the gaps in scientific knowledge regarding ocean warming. The team of scientists behind the study reconstructed the history of ocean warming and determined evidence to support previous studies that say that the oceans are absorbing over 90% of human-emitted greenhouse gases.

The estimates published in the study state that the ocean began warming decades ago, has absorbed 436 x 1021 Joules from 1871 to present. That quantity accounts for approximately 1000 times the annual worldwide human primary energy consumption. Science Daily also reports that warming was similar throughout the time periods of 1920-1945 and 1990-2015.

The biggest conclusion coming from the study suggests that ocean circulation is the cause of up to half the observed warming and associated sea level rise in low- and mid- latitudes of the Atlantic Ocean in the last 60 years. “During this period, more heat has accumulated at lower latitudes than would have if circulation were not changing,” reports Science Daily.

Professor Samar Khatiwala explained the researchers’ method to measure ocean absorption of human-emitted carbon dioxide: “Our approach is akin to "painting" different bits of the ocean surface with dyes of different colors and monitoring how they spread into the interior over time. We can then apply that information to anything else -- for example humanmade carbon or heat anomalies -- that is transported by ocean circulation. If we know what the sea surface temperature anomaly was in 1870 in the North Atlantic Ocean we can figure out how much it contributes to the warming in, say, the deep Indian Ocean in 2018. The idea goes back nearly 200 years to the English mathematician George Green.”

This research suggests that ocean circulation is the cause of up to half the observed warming and associated sea level rise. Photo: Pixabay

Although this method still lacks validation and it only applies to humanmade greenhouse gases that are passively transported by ocean circulation, it has produced out relatively consistent results. Another researcher on the study, Professor Zanna, commented that the researchers “were pleasantly surprised how well the approach works,” adding, “It opens up an exciting new way to study ocean warming in addition to using direct measurements.”

Sources: Science DailyPNAS

About the Author
  • Kathryn is a curious world-traveller interested in the intersection between nature, culture, history, and people. She has worked for environmental education non-profits and is a Spanish/English interpreter.
You May Also Like
AUG 20, 2020
Plants & Animals
Honoring World Mosquito Day
AUG 20, 2020
Honoring World Mosquito Day
August 20th, 2020 is World Mosquito Day. Why celebrate an animal dubbed as one of the “world’s deadliest&rdq ...
OCT 09, 2020
Plants & Animals
Humpback Whales Thriving in NYC Waters
OCT 09, 2020
Humpback Whales Thriving in NYC Waters
Over the past decade, humpback whales have become increasingly common in waters known as the New York-New Jersey Bight. ...
OCT 18, 2020
Earth & The Environment
Pandemic-enforced lockdowns cut premature deaths from air pollution
OCT 18, 2020
Pandemic-enforced lockdowns cut premature deaths from air pollution
A new study published in The Lancet Planetary Health reports that pandemic-enforced lockdowns in China and Europe h ...
OCT 23, 2020
Chemistry & Physics
The Ever-Evolving Battle to Fight Corrosion in Nuclear Reactors
OCT 23, 2020
The Ever-Evolving Battle to Fight Corrosion in Nuclear Reactors
Since its birth in the early 20th century, atomic research has brought mostly positive impacts to our lives. This week i ...
NOV 04, 2020
Plants & Animals
Scientists Rediscover "Lost" Chameleon Species in Madagascar
NOV 04, 2020
Scientists Rediscover "Lost" Chameleon Species in Madagascar
Voeltzkow’s chameleon was recently rediscovered after disappearing for more than 100 years. According to an articl ...
NOV 17, 2020
Plants & Animals
Taking a Virtual Walk in a Forest Altered by Climate Change
NOV 17, 2020
Taking a Virtual Walk in a Forest Altered by Climate Change
For some people, it's easier to grasp the magnitude of a problem once it can be visualized.
Loading Comments...