Tipping points confirmed for massive Antarctic glacier
A small rise in ocean temperature may trigger catastrophic collapse of the West Antarctic Ice Sheet.
In 2013, a 270 square mile iceberg broke off the Pine Island Glacier.
(Adapted from material provided by Northumbria University.)
Researchers have confirmed for the first time that Pine Island Glacier in West Antarctica could cross tipping points, leading to a rapid and irreversible retreat which would have significant consequences for global sea level.Read More »
Why a net‑zero future depends on the ocean’s ability to absorb carbon
Anya M. Waite, Brad Deyoung, Chris Milley and Ian G. Stewart
Credit: CC0 Public Domain
Most of us growing up along Canada’s East Coast never worried about hurricane season. Except for those working at sea, we viewed hurricanes as extreme events in remote tropical regions, seen only through blurred footage of flailing palm trees on the six o’clock news.Read More »
UN Report: Action Needed Now to Solve Triple Emergency
Making Peace With Nature, a new report published by the United Nations Environment Programme (UNEP), synthesizes findings from recent global assessments, including those by the Intergovernmental Panel on Climate Change, the Intergovernmental Science-Policy Platform for Biodiversity and Ecosystem Services, and others. It proposes what the authors’ call “a scientific blueprint to tackle the climate, biodiversity and pollution emergencies.”Read More »
Global Ice Melt: Much Faster Than Predicted
Eqip Glacier, a marine terminating glacier in Greenland
Two new studies suggest that recent estimates of global ice melt are conservative. In other words, ice is melting much more rapidly than experts thought. As a result, sea levels are rising faster as well.
The first study combines various observations from satellites, on-the-ground measurements, and model-based estimates to create a clearer picture of the state of Earth’s ice between 1994 and 2017. Essentially, it captures a global tally of change in ice mass over that time period. The resulting measurements of ice loss and sea level rise fall in the upper range of scenarios forecast by the Intergovernmental Panel on Climate Change (IPCC), a body within the United Nations meant to provide objective science related to climate change. The IPCC’s scenarios were laid out in their 2019 special report on oceans and the cryosphere, itself a recent overview of assessment work.Read More »
FREE BOOK DOWNLOAD
Lithium, Batteries and Climate Change
The transition to green energy does not have to be powered by destructive and poisonous mineral extraction.
Jonathan Neale’s new book, Fight the Fire, is published by The Ecologist magazine, Resistance Books, the Alternative Information and Development Centre, and the International Institute for Research and Education. For a free copy, click the cover image.
Lithium mine in Bolivia
Click to download free pdf or ebook.
I have spent the last year working on a book called Fight the Fire: Green New Deals and Global Climate Jobs. Most of it is about both the politics and the engineering of any possible transition that can avert catastrophic climate breakdown. One thing I had to think about long and hard was lithium and car batteries.
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How climate crisis is disrupting ecosystems?
A Journal of People report
As the world is getting warmer and warmer many organisms native to lower latitudes or elevations are moving higher.
However, novel organisms moving into a new habitat could disturb the ecological balance, which has been established over a long period. Plants and herbivores are characterized by long-term co-evolution, shaping both their geographic distribution and the characteristics that they display in their occupied sites.
At higher elevations, this is seen in insect herbivores being generally less abundant and plants in turn being less well defended against herbivores, because of lower energy and shorter growing seasons. In contrast, low-elevation plant species defend themselves against more abundant and diverse herbivores, whether by means of spikes, thorns or hair, or by toxic substances. Climate change could disturb this ecological organization.Read More »
Climate Crisis: Change in global precipitation patterns
A Journal of People report
Figure: Schematic illustration of the general circulation of the atmosphere for early and late Holocene latitudinal insolation gradients. Source: Inter-hemispheric synchroneity of Holocene precipitation anomalies controlled by Earth’s latitudinal insolation gradients, Nature Communications, 2020; 11 (1) DOI: 10.1038/s41467-020-19021-3
The Earth’s climate system is largely determined by the differences in temperature between the tropics and the poles. Global warming is likely to cause global atmospheric circulation to change and progressively revert to a situation similar to that of 5,000 to 10,000 years ago. This is the conclusion of a study (Michael Deininger, Frank McDermott, Francisco W. Cruz, Juan Pablo Bernal, Manfred Mudelsee, Hubert Vonhof, Christian Millo, Christoph Spötl, Pauline C. Treble, Robyn Pickering, Denis Scholz. Inter-hemispheric synchroneity of Holocene precipitation anomalies controlled by Earth’s latitudinal insolation gradients. Nature Communications, 2020; 11 (1) DOI: 10.1038/s41467-020-19021-3 ) undertaken by a research team led by Dr. Michael Deininger, the results of which have been published in Nature Communications.Read More »
FIVE YEARS OF THE PARIS AGREEMENT
Are We on Track to Meet Paris Agreement Target of 1.5°C Warming Towards 2100?
Shazneen Cyrus Gazdar
The central objective of the Paris Agreement is its long-term temperature goal to hold global average temperature increase to “well below 2 degree Celsius above pre-industrial levels and pursuing efforts to limit the temperature increase to 1.5°C above pre-industrial levels”.
The 1.5°C Paris Agreement goal is linked to a requirement in the Paris Agreement (Article 4.1): All countries work together to bring greenhouse gas (GHG) emissions to zero within the second half of the 21st century. The timing of reaching zero emissions is to be determined by the best-available science related to achieving the long-term temperature goal.Read More »
CAPITALISM AND CLIMATE CRISIS
The New Climate Normal: Capitalism is Killing the Planet
In almost every metric to measure extreme weather, the Earth is breaking record after record, from the hottest heat waves to the worst fires to one of the most active hurricane seasons on record. This is the new normal and yes, this is climate change.
Millions have been evacuated, and hundreds of thousands have lost their homes to fires and flooding since COVID-19, a pandemic that itself foreshadows the dangers of unfettered environmental degradation. Across the West Coast, under menacing orange skies, people have been forced indoors to avoid toxic smoke from historic fires in the middle of a respiratory pandemic. The fires and smoke have created a dramatic sense of fear and dread among a huge section of the population not just in California, but in Washington State and Oregon as well. While millions, especially young people, see the need for immediate, dramatic action, there is also an overwhelming sense of fear that we’re out of time. Read More »
Vital Signs: A Global Carbon Price could Soon be A Reality – Australia should Prepare
As well as restoring dignity to the Oval Office, another thing that will definitely change under a Biden presidency is US policy on the environment.
Biden’s plan for “a clean energy revolution and environmental justice” includes rejoining the Paris Agreement on climate change, investing US$1.7 trillion over the next decade in “green energy” and achieving net-zero greenhouse gas emissions by 2050.Read More »