Climate Change News & Discussions

weatheriscool
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Oceans were the hottest ever recorded in 2022, analysis shows
Source: The Guardian

The world’s oceans were the hottest ever recorded in 2022, demonstrating the profound and pervasive changes that human-caused emissions have made to the planet’s climate. More than 90% of the excess heat trapped by greenhouse gas emissions is absorbed in the oceans. The records, starting in 1958, show an inexorable rise in ocean temperature, with an acceleration in warming after 1990.

Sea surface temperatures are a major influence on the world’s weather. Hotter oceans help supercharge extreme weather, leading to more intense hurricanes and typhoons and more moisture in the air, which brings more intense rains and flooding. Warmer water also expands, pushing up sea levels and endangering coastal cities.

The temperature of the oceans is far less affected by natural climate variability than the temperature of the atmosphere, making the oceans an undeniable indicator of global heating.

Last year is expected to be the fourth or fifth hottest recorded for surface air temperatures when the final data is collated. During 2022, we saw the third La Niña event in a row, which is the cooler phase of an irregular climate cycle centred on the Pacific that affects global weather patterns. When El Niño returns, global air temperatures will be boosted even higher.
Read more: https://www.theguardian.com/environment ... ysis-shows
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The Highest Greenland Temperatures in 1000 Years
January 23, 2023

Introduction:
(EurekAlert) Recent high temperatures on the ice sheet in central and northern Greenland lies are unique, when compared to 1000 years of reconstructed climate conditions on the ice sheet. This is the main message of a new scientific study based on numerous updated ice core data.

The climate of the last 1000 years reconstructed

In the last decade ice core researchers from the Alfred Wegner Institute and the Niels Bohr Institute have collaborated to update existing ice cores with information from the most recent decades. Hence, several missions have been flown to remote locations on the Greenland ice sheet in order to drill new cores at locations where ice cores had been drilled some 30 years ago.

This has been done in order to get ice and snow samples from the latest decades.

Comparing the water isotopic composition in the recent samples with similar records reaching a millennium back in time it is possible to reconstruct climate from year 1000 all the way up to 2011.

The new temperature reconstruction shows that the most recent decade in the cores are some 1.5 degrees warmer than the long-term average.
Read more here: https://www.eurekalert.org/news-releases/977368
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Fossil-Fuel Power Plants May Be on Their Last Legs
by Dan Gearino
January 28, 2023

Introduction:
(Mother Jones) The global energy transition has reached a pivot point, in which fossil fuels have likely peaked in their use for producing electricity and are about to enter a period of decline.

This is the idea at the heart of a new report from RMI (Rocky Mountain Institute), a nonprofit that does research and advocacy about the transition. The lead author, energy analyst Kingsmill Bond, makes a case that wind and solar power are going through growth that looks almost exactly like the trend lines for the early stages of transformative products and industries, across technologies and eras, like automobiles and smartphones.

The growth begins slowly, with high costs, and shifts into high gear as costs shrink and efficiency rises. The optimism in this outlook is almost jarring in its clarity, and in its contrast with the pessimism I see and feel every day as the threats of climate change become clearer.

The report argues that the fossil fuel demand has peaked in the electricity market in part because the annual growth in global electricity demand—about 700 terawatt-hours—is less than the electricity generated in 2022 by newly built power plants that have zero emissions, most of which were wind and solar plants. The report cites forecasts for a continuing increase in wind and solar development that will outpace the growth in electricity demand, a dynamic that will squeeze out the most expensive and dirtiest energy sources.

The use of fossil fuels for electricity shifted in 2018 from a long period of growth to a plateau in which there is no clear trend up or down as measured by the amount of electricity produced. The report says the plateau is likely to continue until about 2025, followed by a long-term decline.
Read more here: https://www.motherjones.com/environmen ... n-energy/

caltrek’s comment: Ironically, for purposes of this forum, one of Certain Russian’s favored sayings is applied later in the article regarding Putin’s decision to launch a war of aggression against the Ukraine: “it was worse than a crime, it was a mistake.” According to the article, it was Talleyrand who first used this expression. (In a different context of course).
Don't mourn, organize.

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AI Predicts We'll Breach Our Climate Goal in Just 10 Years
by David Nield
February 1, 2023

Introduction:
(Science Alert) Sophisticated artificial intelligence (AI) algorithms have predicted that the world will be 1.5 °C hotter than it was before the Industrial Revolution by the early 2030s – another climate change alarm bell to add to the cacophony that's already being sounded.

And that's baked in, the AI says: it doesn't matter whether greenhouse gases rise or fall over the next decade, the 1.5 °C rise now can't be avoided. Bear in mind that limiting temperature increases to 1.5 °C was the ambitious goal of the 2015 Paris Agreement.

The drastic measures originally proposed to cut emissions and stay under 1.5 °C of warming will now most likely be required to avoid a 2 °C increase, according to the authors of the new study. The 2 °C is pegged as when global warming consequences get significantly worse for life on the planet.

But we are already seeing a litany of climate impacts in the form of heatwaves, bushfires, floods, and storms with just 1.1 °C of global heating. So, limiting temperature increases as much as possible matters, because every fraction of a degree counts.

There's more: The AI model shows that even if greenhouse gas emissions rapidly decline to hit net zero by 2076, there's a 1 in 2 chance of hitting 2 °C of warming by 2054, and a 2 in 3 chance of hitting it between 2044 and 2065.
Read more of the Science Alert article here: https://www.sciencealert.com/ai-predic ... -10-years

For a presentation of the results of the study as presented in the journal PNAS: https://www.pnas.org/doi/10.1073/pnas.2207183120
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The Battle of Lützerath Marks Beginning of a New Stage for Global Climate Movement
by Joáo Camargo
January 31, 2023

Introduction:
(Common Dreams) In early January 2023, in a tiny village in western Germany, tens of thousands of climate justice activists faced off against thousands of police in a showdown over the fate of the fossil industry in central Europe. The gigantic mobilization of means to secure the destruction of a village and the expansion of one of the world's largest open-pit coal mines—Garzweiler—in the center of Europe marks a new historical moment. To consider what happened in Lützerath as a defeat of the movement is to misunderstand history.

In Lützerath two historical forces clashed. On one side, the climate justice movement, which has been organizing for decades and since 2019 has become a global mass movement. In opposition to this was the German coal multinational RWE, backed by thousands of police coming from at least 14 German cities to defend the decisions of the German federal government and the government of North Rhine-Westphalia. More than symbolic, the battle of Lützerath was fought on the initiative of the climate justice movement to halt the extraction of 280 million tonnes of coal from beneath the devastated village.
Read more here: https://www.commondreams.org/opinion/t ... lutzerath
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FFS. :roll:

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