Analysis of air bubbles trapped in ice cores more than 200,000 years old provides evidence of moments in the planet's history when the concentration of CO2 in the atmosphere suddenly increased. And it suggests we could be on the cusp of a similar event… But this increase, which would overlap with human emissions, remains well below the level of CO2 we're currently emitting. (Etienne Legrain, Emilie Capron, more at science-et-vie.com)

"Understanding where methane comes from helps us guide effective mitigation strategies," said Sylvia Michel, senior research assistant at the Institute for Arctic and Alpine Research (INSTAAR) and a doctoral student in the Department of Atmospheric and Oceanic Sciences at CU Boulder. "We need to know more about these emissions to understand what climate future we can expect."

Methane is a powerful greenhouse gas responsible for about a third of global warming since industrialization. Although the atmosphere contains less methane than carbon dioxide, methane traps about 30 times more heat than carbon dioxide over 100 years, making it a critical target for addressing climate change. (University of Colorado at Boulder, more at phys.org)

Welcome to the NOAA Carbon Cycle Greenhouse Gases group information website! The central site for global greenhouse gas monitoring and is in charge of operating the global air sampling network that continues to monitor the air we breathe.

19 October 423.73 ppm

18 October 423.72 ppm

Safe concentration: 350 ppm

ppm – the number of particles of carbon dioxide per million particles of air.

Last updated: October 20, 2024

More on gml.noaa.gov

Climate change affects economic stability and growth in many countries. The World Bank, together with development partners, has collected data that highlights potential risks and impacts (viac…)

A major new study reveals that emissions of carbon dioxide (CO ₂ ) from wildfires has increased globally by 60 % since 2001 and nearly tripled in some of the most climate-sensitive northern boreal forests.

An international study involving people from 11 countries has shown that most people, including those in the areas most affected by climate change, do not understand the concept of "climate justice". However, they recognize the social, historical and economic injustices that characterize the climate crisis. The findings could help create more effective communication and advocacy.

The findings show that a basic recognition of the social, historical and economic injustices that characterize the climate crisis is common worldwide, even if people do not consciously connect this understanding with the concept of climate justice.

Researchers found that two-thirds of people in these countries have never heard of climate justice. Most people surveyed supported beliefs related to climate justice, including that poorer people suffer worse from the effects of climate change (78 % agree), people from the most affected communities should have a greater say in decisions about climate change. (78 %) and that capitalism and colonialism are fundamental elements of the climate crisis (70 %). Endorsement of these climate justice beliefs was also positively associated with engagement in climate action and support for just climate policies. (University of Nottingham, more at phys.org)

On 16 October 2024, the European Commission adopted a delegated act to clarify the inclusion of greenhouse gas emissions from maritime vessels in the Monitoring, Reporting and Verification (MRV) Regulation for maritime transport from 2025. As part of the "Fit for 55" package, the MRV Maritime Regulation was revised in 2023 to include greenhouse gas emissions from seagoing ships within its scope from 1 January 2025. It should apply to all seagoing ships of 400 gross tonnage and above. (More on climate.ec.europa.eu)

The impact of climate change on migration, both current and future, has received considerable public and political attention in the last decade. A new IIASA-led study has provided the first comprehensive analysis of how climate factors—specifically drought and drought—affect internal migration. While public debate often focuses on international migration, existing scientific evidence suggests that when climate factors drive migration, it often results in short-distance movements within national borders. However, there is a lack of scientific studies investigating climate-induced internal migration in different countries. A new study published in Nature Climate Change used census microdata from 72 countries between 1960 and 2016 to provide the first global assessment of how environmental stress affects migration across national borders. (International Institute for Applied Systems Analysis, more at sciencedaily.com)

Climate change is disrupting the weather and putting further pressure on our water resources and ecosystems. According to the assessment of the European Environment Agency (EEA), European water management practices are insufficiently adapted to cope with such a rapid and large-scale change that will threaten water security. Better water management is the key to improving water resilience, easing water pressure and ensuring sufficient quality water for European citizens, nature and industry.

The Ministry of Economy submitted a draft of the updated national climate plan for comments. This document proposes to increase the share of renewable energy sources in total consumption to 25 percent. The original plans from 2019 envisaged a 19 percent increase.

FROM updated proposal According to the integrated national energy and climate plan for the period 2021-2030, Slovakia should reduce greenhouse gas emissions in sectors outside the emissions trading system by 22.7 percent by 2030.

This plan is a strategic document focused on energy and the environment, where each member country sets its own national goals and priorities. Slovakia was supposed to submit its updated version of the plan to the Commission. (Co2AI)

In September, Ursula von der Leyen, President of the European Commission, presented an ambitious plan for the next five years, which aims to achieve sustainable prosperity in the European Union. (viac…)

The Earth's climate system continues to deteriorate rapidly, with global temperatures on track to exceed 2°C of warming by the end of this century, which is alarming for years to come. This warning comes from (viac…)

The impact of climate change on migration, both current and future, has received considerable public and political attention in the last decade. A new IIASA-led study has provided the first comprehensive analysis of how climate factors—specifically drought and drought—affect internal migration.

While public debate often focuses on international migration, existing scientific evidence suggests that when climate factors drive migration, it often results in short-distance movements within national borders. However, there is a lack of scientific studies investigating climate-induced internal migration in different countries.

A new study published in Nature Climate Change used census microdata from 72 countries between 1960 and 2016 to provide the first global assessment of how environmental stress affects migration across national borders.

“Our analysis shows that internal migration – which we defined as movement between sub-national regions within a country – is increasing in regions affected by drought and aridification, especially in hyperarid and arid regions. The effects are most pronounced in agriculturally dependent and rural areas. " where livelihoods are very sensitive to changing climatic conditions. (Ansa Heyl, International Institute for Applied Systems Analysis, more at phys.org)

Atmospheric rivers—those long, narrow bands of water vapor in the sky that bring heavy rain and storms to the U.S. West Coast and many other areas—are moving toward higher latitudes, changing the world's weather.

This shift is exacerbating droughts in some regions, intensifying floods in others, and threatening the water resources that many communities rely on. When atmospheric rivers reach far north into the Arctic, they can also melt sea ice, affecting global climate.

In a new study published in Science Advances , University of California, Santa Barbara, climate scientist Qinghua Ding and I show that atmospheric rivers have shifted about 6 to 10 degrees toward the two poles over the past four decades. (Zhe Li, The Conversation, more at phys.org)

The world may already be at a tipping point when it comes to climate change, yet our leaders still seem to be in denial about the reality we must face. So, how late is too late to make the changes necessary for the survival of human life on Earth?

It's so absurd. It is abundantly clear that you cannot have infinite economic growth on a planet of limited resources, which seems to be the goal of our politicians.

We are now seeing the consequence of 50 years of ignoring this information, because the climate movement was fundamentally developed during those 1970s when I was a teenager, as well as when I first became aware of it. (More on taxresearch.org.uk)

Our world is witnessing profound climate change that threatens to change the face of the Earth as we know it. From the melting of ice at the poles to the escalation of destructive storms and hurricanes, climate change is no longer just an environmental problem, but an existential threat to humanity. These accelerating changes reflect a profound crisis that can no longer be ignored. Are we ready to face this challenge? Climate change is not a new phenomenon, but rather the result of decades of neglecting the issues of greenhouse gases, deforestation and carbon emissions. Humanity has ignored repeated warnings for decades, and now we are paying the price. Average global temperatures continue to rise, disrupting the balance of ecosystems and climate. (ندى محر عبدربه, صنعة مُگوتوم, more at arabiaweather.co

Using data from an instrument designed by NASA's Jet Propulsion Laboratory in Southern California, the nonprofit organization Carbon Mapper has published the first detections of methane and carbon dioxide from the Tanager-1 satellite. The detections highlight methane plumes in Pakistan and Texas, as well as carbon dioxide plumes in South Africa.

The data contributes to Carbon Mapper's goal to identify and measure greenhouse gas emissions from point sources on a global scale and to make this information available and accessible. (More on jpl.nasa.gov)

A study of scenarios where the world temporarily exceeds 1.5°C of warming compared to pre-industrial levels raises concerns about consequences that may not be reversible for decades or longer.

Researchers warn that sea level rise could be as much as another 40 centimeters due to maximum warming under exceedance scenarios.

what's next?

Climate scientists are urging policymakers to focus on reducing emissions rather than on expensive attempts to capture or remove carbon dioxide and other greenhouse gases from the Earth's atmosphere. (Peter de Kruijff, more at abc.net.au)

The EU is making progress towards climate neutrality, but the reduction of greenhouse gas emissions from transport is relatively stagnant. According to a European Environment Agency (EEA) report published today, the transport sector's transition to sustainability is hampered by increasing demand for transport and the slow growth of sustainable modes of transport for both passenger and freight transport. (More on eea.europa.eu)