* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Monday, June 23, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Netflix unveils Dallas immersive venue for fans of hit shows like ‘Squid Game,’ ‘Stranger Things’ – Houston Chronicle

    Step Inside Netflix’s New Dallas Immersive Experience Featuring Hits Like ‘Squid Game’ and ‘Stranger Things

    ‘Puttin’ on the Ritz’: Civic Players bring ‘Young Frankenstein’ to life – Yahoo

    Civic Players Deliver a Hilarious and Unforgettable Performance of ‘Young Frankenstein

    ‘Wheel of Fortune’: Amputee Wins $60,000 After Breaking Incredible ‘Curse’ – Hastings Tribune

    Wheel of Fortune’ Amputee Breaks Incredible ‘Curse’ to Win $60,000!

    North Star Sports & Entertainment Network: Coming soon – KTTC News

    North Star Sports & Entertainment Network: Coming soon – KTTC News

    Safety concerns in Deep Ellum create apprehension as the entertainment district gains visitors – CBS News

    Safety Concerns Surge Amid Deep Ellum’s Booming Popularity and Growing Crowds

    Elisabeth Moss’ ‘Handmaid’s Tale’ Emmy chances, by the numbers – Yahoo

    Elisabeth Moss’ ‘Handmaid’s Tale’ Emmy chances, by the numbers – Yahoo

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Promising Technology Stocks To Follow Today – June 22nd – MarketBeat

    Top Technology Stocks to Watch Today – June 22nd

    Technology Convergence Report 2025 – The World Economic Forum

    Technology Convergence Report 2025 – The World Economic Forum

    How AI can help make cities work better for residents – MIT Technology Review

    How AI can help make cities work better for residents – MIT Technology Review

    Tech Champions with Leo Bletnitsky of Healthy Technology Solutions – Buzz Media Group

    Meet Tech Champion Leo Bletnitsky of Healthy Technology Solutions

    Crypto’s true revolution is about humanity, not technology – Cointelegraph

    Crypto’s Real Revolution: Transforming Humanity Beyond Technology

    $1 Billion Problem: New Technology Could Save Your Daily Cup of Coffee – SciTechDaily

    The $1 Billion Challenge: How New Technology Could Rescue Your Daily Cup of Coffee

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Netflix unveils Dallas immersive venue for fans of hit shows like ‘Squid Game,’ ‘Stranger Things’ – Houston Chronicle

    Step Inside Netflix’s New Dallas Immersive Experience Featuring Hits Like ‘Squid Game’ and ‘Stranger Things

    ‘Puttin’ on the Ritz’: Civic Players bring ‘Young Frankenstein’ to life – Yahoo

    Civic Players Deliver a Hilarious and Unforgettable Performance of ‘Young Frankenstein

    ‘Wheel of Fortune’: Amputee Wins $60,000 After Breaking Incredible ‘Curse’ – Hastings Tribune

    Wheel of Fortune’ Amputee Breaks Incredible ‘Curse’ to Win $60,000!

    North Star Sports & Entertainment Network: Coming soon – KTTC News

    North Star Sports & Entertainment Network: Coming soon – KTTC News

    Safety concerns in Deep Ellum create apprehension as the entertainment district gains visitors – CBS News

    Safety Concerns Surge Amid Deep Ellum’s Booming Popularity and Growing Crowds

    Elisabeth Moss’ ‘Handmaid’s Tale’ Emmy chances, by the numbers – Yahoo

    Elisabeth Moss’ ‘Handmaid’s Tale’ Emmy chances, by the numbers – Yahoo

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Promising Technology Stocks To Follow Today – June 22nd – MarketBeat

    Top Technology Stocks to Watch Today – June 22nd

    Technology Convergence Report 2025 – The World Economic Forum

    Technology Convergence Report 2025 – The World Economic Forum

    How AI can help make cities work better for residents – MIT Technology Review

    How AI can help make cities work better for residents – MIT Technology Review

    Tech Champions with Leo Bletnitsky of Healthy Technology Solutions – Buzz Media Group

    Meet Tech Champion Leo Bletnitsky of Healthy Technology Solutions

    Crypto’s true revolution is about humanity, not technology – Cointelegraph

    Crypto’s Real Revolution: Transforming Humanity Beyond Technology

    $1 Billion Problem: New Technology Could Save Your Daily Cup of Coffee – SciTechDaily

    The $1 Billion Challenge: How New Technology Could Rescue Your Daily Cup of Coffee

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

A Vivid Display of Climate Change: Study Reveals Startling Changes in Ocean Hues

July 17, 2023
in Science
A Vivid Display of Climate Change: Study Reveals Startling Changes in Ocean Hues
Share on FacebookShare on Twitter

Ocean Color Changes Illustration

Scientists from MIT and the National Oceanography Center in the U.K. have discovered that 56% of the world’s oceans have changed color significantly over the past 20 years due to human-induced climate change. These color changes, particularly in equatorial tropical regions, are indicative of shifts within marine ecosystems. The study also suggests that monitoring ocean colors could provide a more accurate method of detecting these changes.

Ocean color changes reflect significant shifts in essential marine ecosystems.

The ocean’s color has changed significantly over the last 20 years, and the global trend is likely a consequence of human-induced climate change, report scientists at MIT, the National Oceanography Center in the U.K., and elsewhere.

In a study published on July 12 in the journal Nature, the team writes that they have detected changes in ocean color over the past two decades that cannot be explained by natural, year-to-year variability alone. These color shifts, though subtle to the human eye, have occurred over 56 percent of the world’s oceans — an expanse that is larger than the total land area on Earth.

In particular, the researchers found that tropical ocean regions near the equator have become steadily greener over time. The shift in ocean color indicates that ecosystems within the surface ocean must also be changing, as the color of the ocean is a literal reflection of the organisms and materials in its waters.

Ocean Color Changes

To track the changes in ocean color, scientists analyzed measurements of ocean color taken by the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua satellite, which has been monitoring ocean color for 21 years. Credit: NASA and Joshua Stevens, using Landsat data from the U.S. Geological Survey and MODIS data from LANCE/EOSDIS Rapid Response.

At this point, the researchers cannot say how exactly marine ecosystems are changing to reflect the shifting color. But they are pretty sure of one thing: Human-induced climate change is likely the driver.

“I’ve been running simulations that have been telling me for years that these changes in ocean color are going to happen,” says study co-author Stephanie Dutkiewicz, senior research scientist in MIT’s Department of Earth, Atmospheric and Planetary Sciences and the Center for Global Change Science. “To actually see it happening for real is not surprising, but frightening. And these changes are consistent with man-induced changes to our climate.”

“This gives additional evidence of how human activities are affecting life on Earth over a huge spatial extent,” adds lead author B. B. Cael PhD ’19 of the National Oceanography Center in Southampton, U.K. “It’s another way that humans are affecting the biosphere.”

The study’s co-authors also include Stephanie Henson of the National Oceanography Center, Kelsey Bisson at Oregon State University, and Emmanuel Boss of the University of Maine.

Above the noise

The ocean’s color is a visual product of whatever lies within its upper layers. Generally, waters that are deep blue reflect very little life, whereas greener waters indicate the presence of ecosystems, and mainly phytoplankton — plant-like microbes that are abundant in upper ocean and that contain the green pigment chlorophyll. The pigment helps plankton harvest sunlight, which they use to capture carbon dioxide from the atmosphere and convert it into sugars.

Phytoplankton are the foundation of the marine food web that sustains progressively more complex organisms, on up to krill, fish, and seabirds and marine mammals. Phytoplankton are also a powerful muscle in the ocean’s ability to capture and store carbon dioxide. Scientists are therefore keen to monitor phytoplankton across the surface oceans and to see how these essential communities might respond to climate change. To do so, scientists have tracked changes in chlorophyll, based on the ratio of how much blue versus green light is reflected from the ocean surface, which can be monitored from space

But around a decade ago, Henson, who is a co-author of the current study, published a paper with others, which showed that, if scientists were tracking chlorophyll alone, it would take at least 30 years of continuous monitoring to detect any trend that was driven specifically by climate change. The reason, the team argued, was that the large, natural variations in chlorophyll from year to year would overwhelm any anthropogenic influence on chlorophyll concentrations. It would therefore take several decades to pick out a meaningful, climate-change-driven signal amid the normal noise.

In 2019, Dutkiewicz and her colleagues published a separate paper, showing through a new model that the natural variation in other ocean colors is much smaller compared to that of chlorophyll. Therefore, any signal of climate-change-driven changes should be easier to detect over the smaller, normal variations of other ocean colors. They predicted that such changes should be apparent within 20, rather than 30 years of monitoring.

“So I thought, doesn’t it make sense to look for a trend in all these other colors, rather than in chlorophyll alone?” Cael says. “It’s worth looking at the whole spectrum, rather than just trying to estimate one number from bits of the spectrum.”

The power of seven

In the current study, Cael and the team analyzed measurements of ocean color taken by the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua satellite, which has been monitoring ocean color for 21 years. MODIS takes measurements in seven visible wavelengths, including the two colors researchers traditionally use to estimate chlorophyll.

The differences in color that the satellite picks up are too subtle for human eyes to differentiate. Much of the ocean appears blue to our eye, whereas the true color may contain a mix of subtler wavelengths, from blue to green and even red.

Cael carried out a statistical analysis using all seven ocean colors measured by the satellite from 2002 to 2022 together. He first looked at how much the seven colors changed from region to region during a given year, which gave him an idea of their natural variations. He then zoomed out to see how these annual variations in ocean color changed over a longer stretch of two decades. This analysis turned up a clear trend, above the normal year-to-year variability.

To see whether this trend is related to climate change, he then looked to Dutkiewicz’s model from 2019. This model simulated the Earth’s oceans under two scenarios: one with the addition of greenhouse gases, and the other without it. The greenhouse-gas model predicted that a significant trend should show up within 20 years and that this trend should cause changes to ocean color in about 50 percent of the world’s surface oceans — almost exactly what Cael found in his analysis of real-world satellite data.

“This suggests that the trends we observe are not a random variation in the Earth system,” Cael says. “This is consistent with anthropogenic climate change.”

The team’s results show that monitoring ocean colors beyond chlorophyll could give scientists a clearer, faster way to detect climate-change-driven changes to marine ecosystems.

“The color of the oceans has changed,” Dutkiewicz says. “And we can’t say how. But we can say that changes in color reflect changes in plankton communities, that will impact everything that feeds on plankton. It will also change how much the ocean will take up carbon, because different types of plankton have different abilities to do that. So, we hope people take this seriously. It’s not only models that are predicting these changes will happen. We can now see it happening, and the ocean is changing.”

Reference: “Global climate-change trends detected in indicators of ocean ecology” by B. B. Cael, Kelsey Bisson, Emmanuel Boss, Stephanie Dutkiewicz and Stephanie Henson, 12 July 2023, Nature.
DOI: 10.1038/s41586-023-06321-z

This research was supported, in part, by NASA.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : SciTechDaily – https://scitechdaily.com/a-vivid-display-of-climate-change-study-reveals-startling-changes-in-ocean-hues/

Tags: displayscienceVivid
Previous Post

Unlocking the Secrets of Vortex Rings: Paving the Way to Efficient Nuclear Fusion

Next Post

Land Abandonment Is Increasing – And It’s Changing Nature

US judge blocks slashing of universities’ federal funding from National Science Foundation – Reuters

US Judge Halts Cuts to Federal Funding for Universities from National Science Foundation

June 23, 2025
The Computer-Science Bubble Is Bursting – The Atlantic

Is the Computer-Science Boom Coming to an End?

June 23, 2025

6 Life Moments When Staying Silent Is the Wisest Choice

June 23, 2025
Dollar Gains as the World Awaits Iran’s Response to US Attack – Yahoo Finance

Dollar Gains as the World Awaits Iran’s Response to US Attack – Yahoo Finance

June 23, 2025
The Political Economy of Reform in Lebanon and its Challenges – Middle East Transparent

Unveiling Lebanon’s Reform Journey: Overcoming Challenges and Political Obstacles

June 23, 2025
Three AI Trends Reshaping the Future of Media & Entertainment – TVTechnology

3 Game-Changing AI Trends Revolutionizing the Future of Media and Entertainment

June 23, 2025
Tell us your immigration crackdown story – CNN

Tell us your immigration crackdown story – CNN

June 23, 2025
Promising Technology Stocks To Follow Today – June 22nd – MarketBeat

Top Technology Stocks to Watch Today – June 22nd

June 23, 2025
Steelers Prediction Sees TJ Watt Trade to Buccaneers in Blockbuster – Yahoo Sports

Steelers Prediction Sees TJ Watt Trade to Buccaneers in Blockbuster – Yahoo Sports

June 23, 2025
Senior Thesis Spotlight: Considering facets of human psychology from a data science point of view – Princeton University

Exploring Human Psychology Through the Lens of Data Science: A Senior Thesis Spotlight

June 23, 2025

Categories

Archives

June 2025
MTWTFSS
 1
2345678
9101112131415
16171819202122
23242526272829
30 
« May    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (697)
  • Economy (713)
  • Entertainment (21,611)
  • General (15,527)
  • Health (9,753)
  • Lifestyle (718)
  • News (22,149)
  • People (716)
  • Politics (720)
  • Science (15,932)
  • Sports (21,209)
  • Technology (15,698)
  • World (693)

Recent News

US judge blocks slashing of universities’ federal funding from National Science Foundation – Reuters

US Judge Halts Cuts to Federal Funding for Universities from National Science Foundation

June 23, 2025
The Computer-Science Bubble Is Bursting – The Atlantic

Is the Computer-Science Boom Coming to an End?

June 23, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version