Close Menu
    Facebook X (Twitter) Instagram
    Facebook X (Twitter) Instagram
    StockNews24StockNews24
    Subscribe
    • Shares
    • News
      • Featured Company
      • News Overview
        • Company news
        • Expert Columns
        • Germany
        • USA
        • Price movements
        • Default values
        • Small caps
        • Business
      • News Search
        • Stock News
        • CFD News
        • Foreign exchange news
        • ETF News
        • Money, Career & Lifestyle News
      • Index News
        • DAX News
        • MDAX News
        • TecDAX News
        • Dow Jones News
        • Eurostoxx News
        • NASDAQ News
        • ATX News
        • S&P 500 News
      • Other Topics
        • Private Finance News
        • Commodity News
        • Certificate News
        • Interest rate news
        • SMI News
        • Nikkei 225 News1
    • Carbon Markets
    • Raw materials
    • Funds
    • Bonds
    • Currency
    • Crypto
    • English
      • العربية
      • 简体中文
      • Nederlands
      • English
      • Français
      • Deutsch
      • Italiano
      • Português
      • Русский
      • Español
    StockNews24StockNews24
    Home » Annual carbon dioxide peak passes another milestone
    Carbon Credits

    Annual carbon dioxide peak passes another milestone

    userBy userJune 5, 2025No Comments4 Mins Read
    Facebook Twitter LinkedIn Telegram Pinterest Tumblr Reddit WhatsApp Email
    Share
    Facebook Twitter LinkedIn Pinterest Email


    Annual carbon dioxide peak passes another milestone
    May 2025 concentrations of carbon dioxide measured at Mauna Loa Observatory. Credit: University of California – San Diego

    For the first time, the seasonal peak of carbon dioxide concentrations in the atmosphere exceeded 430 parts per million (ppm) at NOAA’s Mauna Loa Observatory on Hawaii, scientists from NOAA and Scripps Institution of Oceanography at the University of California San Diego reported today.

    Scripps Oceanography scientists calculated a May monthly average of 430.2 ppm for 2025, an increase of 3.5 ppm over May 2024’s measurement of 426.7 ppm. Scientists with NOAA’s Global Monitoring Laboratory reported an average of 430.5 ppm, an increase of 3.6 ppm over last year.

    “Another year, another record,” said Ralph Keeling, director of the Scripps CO2 Program. “It’s sad.”

    Situated high on the slopes of the Mauna Loa volcano, the Mauna Loa Observatory is the global benchmark location for monitoring atmospheric CO2. At an elevation of 11,141 feet above sea level, the observatory produces measurements that represent the average state of the atmosphere in the Northern Hemisphere.

    In 1958, Scripps scientist Charles David Keeling, father of Ralph Keeling, began monitoring CO2 concentrations at the NOAA weather station located at the observatory site. Keeling was the first to recognize that CO2 levels in the Northern Hemisphere peaked in May, fell during the growing season, and rose again as plants died in the fall. He documented these CO2 fluctuations in a record that came to be known as the Keeling Curve. He was also the first to recognize that, in addition to the seasonal fluctuation, CO2 levels rose every year.

    NOAA initiated daily CO2 measurements in 1974 and has maintained a complementary, independent measurement record ever since.

    For most of the past half century, continuous daily sampling by both NOAA and Scripps at Mauna Loa provided an ideal baseline for establishing a long-term time series of the increase in the most important human-caused greenhouse gas. In November 2022, the eruption of Mauna Loa volcano buried over a mile of the access road to the observatory in lava. After a brief pause, Scripps and NOAA re-established measurements at the summit of nearby Maunakea.

    Later in 2023, NOAA staff accessing the observatory by helicopter installed a solar power and battery backup system that allowed them to restart CO2 measurements. A temporary road to the observatory across the lava fields is expected to be completed this fall.

    Like other greenhouse gases, CO2 acts like a blanket, trapping heat and warming the lower atmosphere. This changes weather patterns and fuels extreme events, such as heat waves, droughts and wildfires, as well as heavier precipitation and flooding. Rising CO2 levels also contribute to ocean acidification, a change in ocean chemistry that makes it more difficult for marine organisms like crustaceans, bivalves and coral to grow hard, carbonate skeletons or shells.

    While the Mauna Loa Observatory is considered the benchmark climate monitoring station for capturing the global rise in CO2, it does not capture the full extent of variations in CO2 throughout the atmosphere. Stations in the Southern Hemisphere have not yet crossed 430 ppm, and have a reversed cycle.

    NOAA’s globally distributed sampling network provides this broader picture, which allows not just tracking the overall rise, but diagnosing locations of sources and sinks of CO2, such from northern or tropical forests or the oceans. Similarly, the Scripps CO2 program operates 14 global sampling stations.

    The Mauna Loa data, together with measurements from sampling stations around the world, are incorporated into the Global Greenhouse Gas Reference Network, a foundational research dataset for international climate scientists and a benchmark for policymakers attempting to address the causes and impacts of climate change.

    Measurements by the Scripps CO2 program are supported by the U.S. National Science Foundation, by Schmidt Sciences, and by Earth Networks, a technology company that has collaborated with Scripps to expand the global greenhouse gas monitoring network.

    Provided by
    University of California – San Diego


    Citation:
    Annual carbon dioxide peak passes another milestone (2025, June 5)
    retrieved 5 June 2025
    from https://phys.org/news/2025-06-annual-carbon-dioxide-peak-milestone.html

    This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
    part may be reproduced without the written permission. The content is provided for information purposes only.





    Source link

    Share this:

    • Click to share on Facebook (Opens in new window) Facebook
    • Click to share on X (Opens in new window) X

    Like this:

    Like Loading...

    Related

    Share. Facebook Twitter Pinterest LinkedIn Tumblr Telegram Email
    Previous Article3 long-term growth drivers I think could propel Greggs shares up, up, and away!
    Next Article Element Resources to Build America’s Largest $1.85B Green Hydrogen Plant in California
    user
    • Website

    Related Posts

    Trump’s 50% Tariff Hike: Boost or Blow to U.S. Steel and Aluminum?

    June 6, 2025

    Onyx Renewables Secures $260 Million in Secured Credit Facilities to Support Nationwide Deployment of Localized Clean Energy Solutions

    June 6, 2025

    Robust Growth in Carbon Credit Offset Consulting Service Market (2025-2032): Industry Insights, SWOT Analysis, Market Size, Share, and Key Growth Factors | Climate Care, ClimateTrade, CO2balance, Pratt & Whitney

    June 6, 2025
    Add A Comment

    Leave a ReplyCancel reply

    © 2025 StockNews24. Designed by Sujon.

    Type above and press Enter to search. Press Esc to cancel.

    %d