• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Saturday, July 26, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Chemistry

How extratropical ocean-atmosphere interactions can contribute to the variability of jet streams in the Northern Hemisphere

Bioengineer by Bioengineer
March 28, 2024
in Chemistry
Reading Time: 4 mins read
0
ADVERTISEMENT
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

Fukuoka, Japan—The interaction between the oceans and the atmosphere plays a vital role in shaping the Earth’s climate. Changing sea surface temperatures can heat or cool the atmosphere, and changes in the atmosphere can do the same to the ocean surface. This exchange in energy is known as “ocean-atmosphere coupling.”

The impact of ocean-atmosphere coupling on teleconnection patterns in the Northern Hemisphere.

Credit: Kyushu University/Masato Mori

Fukuoka, Japan—The interaction between the oceans and the atmosphere plays a vital role in shaping the Earth’s climate. Changing sea surface temperatures can heat or cool the atmosphere, and changes in the atmosphere can do the same to the ocean surface. This exchange in energy is known as “ocean-atmosphere coupling.”

Now, researchers from Kyushu University have revealed that this ocean-atmosphere coupling enhances teleconnection patterns—when climate conditions change across vast regions of the globe—in the Northern Hemisphere. In their recent study, the team modelled the effect of ocean coupling on atmospheric circulation patterns, finding that extratropical ocean-atmosphere coupling causes more meandering jet streams, which are linked to extreme weather events.

Ocean-atmosphere coupling is most powerful in the tropics, where the coupling is responsible for the well-known “El Niño-Southern Oscillation” in the equatorial Pacific Ocean. The El Niño-Southern Oscillation, in turn, remotely leads to a meandering jet stream in the mid-latitudes through the formation of large-scale atmospheric circulation patterns, i.e., teleconnection patterns.

Outside the tropics, in the mid-latitudes, the impact of ocean-atmosphere coupling on teleconnection patterns is less understood. Nevertheless, its significance in the cause of extreme weather events cannot be ignored, especially in the eye of the climate crisis.

In a study published in the journal Communications Earth & Environment, a team of researchers led by Assistant Professor Masato Mori from Kyushu University’s Research Institute for Applied Mechanics, in collaboration with the University of Tokyo, Toyama University, and the Japan Agency for Marine-Earth Science and Technology, shed new light on the phenomenon.

“Because extreme weather events are more likely to occur when fluctuations in the jet streams are large—as in when the magnitude of the teleconnection pattern is large—it is important to understand the mechanisms that form and maintain said teleconnection pattern,” explains Mori.

To investigate the role of the extratropical ocean-atmosphere coupling, the researchers conducted two simulations: a coupled run, which considered the interaction between the extratropical ocean and the atmosphere, and an uncoupled run, which neglected the interaction between the two components. The simulations examined the impact of ocean-atmosphere coupling on teleconnection patterns during the Northern Hemisphere’s wintertime: December to February. The effect of the coupling on atmospheric circulation patterns were evaluated through atmospheric variables, such as air pressure and temperature.

In their simulations, the researchers observed significant changes in the atmospheric variables, especially in the North Pacific, subpolar North Atlantic, and northern Eurasia around the Barents-Kara Sea regions off the coast of Siberia. These changes indicated shifts in teleconnection patterns compared to simulations without such an interaction.

“Extratropical coupling selectively enhances the variance of three principal modes of variability, explaining 13%, 11%, and 10% of the total variance of Pacific/North American, North Atlantic Oscillation, and Warm-Arctic Cold-Eurasian patterns, respectively,” says Mori.

In the coupled run, heat exchange between the ocean and the atmosphere reduced the air-sea thermal difference. As a result, less heat is released from the oceans and into the atmosphere, leading to increased kinetic energy and a more meandering jet stream. Conversely, when the oceans are uncoupled, the sea surface temperature does not respond to atmospheric fluctuations. The larger temperature differences cause more heat to be released, resulting in a less meandering jet stream.

“The present study quantifies the coupling effect based on large ensemble simulations of a state-of-the-art fully coupled model. Moreover, it reveals how coupling selectively enhances multiple principal modes of variability, not only thermodynamically but also dynamically,” concludes Mori.

Notably, the researchers point out that the simulation could have underestimated the coupling effect owing to model bias and issues with simulation design. Nevertheless, new knowledge on the effects of ocean-atmosphere coupling in the Northern Hemisphere could contribute to improving climate projections in the face of the climate crisis through the improvement of climate models.

###

For more information about this research, see “Northern Hemisphere winter atmospheric teleconnections are intensified by extratropical ocean-atmosphere coupling,” Masato Mori, Yu Kosaka, Bunmei Taguchi, Hiroki Tokinaga, Hiroaki Tatebe, and Hisashi Nakamura, Communications Earth & Environment, https://doi.org/10.1038/s43247-024-01282-1

About Kyushu University 
Kyushu University is one of Japan’s leading research-oriented institutes of higher education since its founding in 1911. Home to around 19,000 students and 8,000 faculty and staff, Kyushu U’s world-class research centers cover a wide range of study areas and research fields, from the humanities and arts to engineering and medical sciences. Its multiple campuses—including one of the largest in Japan—are located around Fukuoka City, a coastal metropolis on the southwestern Japanese island of Kyushu that is frequently ranked among the world’s most livable cities and historically known as Japan’s gateway to Asia. Through its Vision 2030, Kyushu U will ‘Drive Social Change with Integrative Knowledge.’ Its synergistic application of knowledge will encompass all of academia and solve issues in society while innovating new systems for a better future.



Journal

Communications Earth & Environment

DOI

10.1038/s43247-024-01282-1

Method of Research

Computational simulation/modeling

Subject of Research

Not applicable

Article Title

Northern Hemisphere winter atmospheric teleconnections are intensified by extratropical ocean-atmosphere coupling

Article Publication Date

15-Mar-2024

Share12Tweet7Share2ShareShareShare1

Related Posts

Architecture of VBayesMM

Unraveling Gut Bacteria Mysteries Through AI

July 4, 2025
Visulaization of ATLAS collision

Can the Large Hadron Collider Prove String Theory Right?

July 3, 2025

Breakthrough in Gene Therapy: Synthetic DNA Nanoparticles Pave the Way

July 3, 2025

Real-Time Electrochemical Microfluidic Monitoring of Additive Levels in Acidic Copper Plating Solutions for Metal Interconnections

July 3, 2025

POPULAR NEWS

  • Blind to the Burn

    Overlooked Dangers: Debunking Common Myths About Skin Cancer Risk in the U.S.

    63 shares
    Share 25 Tweet 16
  • USF Research Unveils AI Technology for Detecting Early PTSD Indicators in Youth Through Facial Analysis

    43 shares
    Share 17 Tweet 11
  • Dr. Miriam Merad Honored with French Knighthood for Groundbreaking Contributions to Science and Medicine

    46 shares
    Share 18 Tweet 12
  • New Measurements Elevate Hubble Tension to a Critical Crisis

    43 shares
    Share 17 Tweet 11

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

Additive Manufacturing of Monolithic Gyroidal Solid Oxide Cells

Machine Learning Uncovers Sorghum’s Complex Mold Resistance

Pathology Multiplexing Revolutionizes Disease Mapping

  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.