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Planète : dérèglement climatique

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Réchauffement et dérèglement du climat, ce qui nous attend et pourquoi ?

Signez la lettre ouverte pour un plan de relance vert. Le tourisme serait responsable de 8% des émissions mondiales de gaz à effet de serre. Selon une étude inédite menée dans 160 pays, le tourisme serait responsable de pas moins de 8% des émissions de gaz à effet de serre mondiales.

Le tourisme serait responsable de 8% des émissions mondiales de gaz à effet de serre

La chronique écosocialiste de Corinne Morel Darleux. Pour accéder à tous nos contenus, vous devez être abonné… ABONNEZ-VOUS MAINTENANT, c’est très simple !

La chronique écosocialiste de Corinne Morel Darleux

SOUTENEZ LA-BAS pour seulement 5 euros par mois. Postwaves - Climate Think Tank, Top Posts. Artist turns climate data into striking paintings. Climate data is usually seen in pixels, spreadsheets, and maps.

Artist turns climate data into striking paintings

But watercolor paintings? Not so much. That’s what makes a growing series of paintings by Maine-based artist Jill Pelto so striking. They combine haunting imagery from the natural world with hard data showing the impact climate change is having. The message can be subtle, with the global average temperature graph tucked in a painting that shows wildfires raging. 5 Cheap and Simple Ways to Stay Cozy This Winter. Despite the fact that climate change brought on extreme heat, drought and storms this year, winter will be here before you know it.

5 Cheap and Simple Ways to Stay Cozy This Winter

In fact, there’s reason to believe that although we’re likely to see less winter precipitation, what we do see will be more intense than years past. According to an early 2012 study led by University of Arizona researchers, we could see an average 12.6 percent increase in the intensity of extreme winter precipitation events in the next 20 years and a 14.4 percent increase in the next 50 years. This means lots of cold, snow, ice and for some, skyrocketing utility bills. Add that to the threat of cold and flu that has a way of catching us at the worst time, and it’s no wonder people dread the onset of winter.

Well, it’s time to put a little jolly back into the cold weather season. 1. Wasted food is a huge climate problem. If wasted food became its own pungent country, it would be the world’s third biggest contributor to climate change.

Wasted food is a huge climate problem

The United Nations Food and Agriculture Organization had previously determined that roughly one-third of food is wasted around the world. Now it has used those figures to calculate the environmental impacts of farming food that is never eaten, along with the climate-changing effects of the methane that escapes from food as it rots. The results, published in a new report [PDF], were as nauseating as a grub-infested apple: Without accounting for [greenhouse gas] emissions from land use change, the carbon footprint of food produced and not eaten is estimated to 3.3 Gtonnes of CO2 equivalent: as such, food wastage ranks as the third top emitter after USA and China.

Global Warming Increases Risk Of Record Heat. September 6, 2013 redOrbit Staff & Wire Reports – Your Universe Online Last July was the hottest month in the history of US weather record keeping, but it may not hold that title for long, researchers from Stanford University claim in a recently-published report.

Global Warming Increases Risk Of Record Heat

According to Noah Diffenbaugh, an associate professor of environmental Earth system science at the California institution, and research assistant Martin Scherer, extreme weather is more than four times more likely to occur now than it was during the pre-industrial era. In research that was part of a larger report edited by scientists at the National Oceanic and Atmospheric Administration (NOAA) and published Sept. 5 in the Bulletin of the American Meteorological Society, the duo reportedly found strong evidence that elevated atmospheric greenhouse gas levels have increased the likelihood of future instances of severe heat similar to that which occurred in the US during the summer of 2012.

Fish are great at fighting climate change. Too bad we’re eating them all. Is global warming really slowing down? Chances are you’ve heard people say that global warming has “stopped,” “paused,” or hit a “slowdown.”

Is global warming really slowing down?

It’s a favorite talking point of political conservatives like Texas Sen. Ted Cruz, who recently declared that there has been “no recorded warming since 1998.” Climate skeptics frequently use these arguments to cast doubt on climate science and to downplay the urgency of addressing global warming. Last year, for instance, Fox News pronounced global warming “over.” Scientists disagree. Everything you need to know about El Niño — and more.

Stuck at a standstill between blaring horns on a stretch of the Pacific Coast Highway through Long Beach, Calif., my 9-year-old self felt pretty sure our car was about to get swept away by the torrent of water pouring from the sky.

Everything you need to know about El Niño — and more

“Mom, what’s going on?” I asked. L'explorateur Jean-Louis Etienne se prépare pour l'Antarctique. A 66 ans, le médecin explorateur Jean-Louis Etienne va jouer sa dernière partition d'aventure en affrontant, sur une plate-forme scientifique dérivante et révolutionnaire, les terribles «cinquantièmes hurlants» en Antarctique. 1986 : un trou dans la couche d'ozone est découvert au pôle Nord. Ozone hole could be making global warming worse. It’s like Lord Voldemort joining forces with The Penguin.

Ozone hole could be making global warming worse

Two of the globe’s most epic environmental threats appear to be ganging up on us: The hole in the ozone layer could be hastening global warming. Yes, the hole in the ozone layer. It still exists, though it has been getting smaller because the world rightly panicked and began phasing out the use of CFCs in the 1980s. It was previously thought that the hole was helping to slow down global warming, but new research published in Geophysical Research Letters suggests the opposite.

Histoire de l'effet de serre et du réchauffement global. Svante Arrhenius (1859-1927), un scientifique Suédois, fut le premier a clamé en 1896 que la combustion des combustibles fossiles pouvait avoir comme conséquence une augmentation du réchauffement global.

Histoire de l'effet de serre et du réchauffement global

Le dégel du permafrost pourrait accentuer le réchauffement climatique. C’est la menace sous la glace: la fonte du pergélisol (permafrost en anglais), ces sols gelés quasiment en permanence dans les régions arctiques d'Amérique du Nord et de Sibérie, pourrait accentuer le réchauffement climatique. Burning wood is not the solution to climate change. So far, five UK coal-fired power stations have announced plans to convert, either partly or completely, to biomass.

These are Tilbury in Essex, Ironbridge in Shropshire, Eggborough and Drax in Yorkshire, and Lynemouth in Northumberland. Between them these power stations will require almost six times as much wood as the UK produces in total every year. That statistic alone shows just how unsustainable wood-fired power stations are and it spells disaster for the world's natural habitats, human rights, and our hopes of combating climate change. A demand for biomass on the scale planned has dire implications. So far, most wood pellets imported to the UK come from Canada and the Southern US, while some are sourced from the Baltic States, Russia and Portugal. NDD-COP18_fr.pdf (Objet application/pdf) Changement climatique : Un rapport secret du pentagone prévoit un nouvel âge de glace. Changement climatique : Un rapport secret du pentagone prévoit un nouvel âge de glace Il y a près de 10 ans, le pentagone commandait un rapport afin de connaître les effets qu'entraînerait un brusque changement climatique sur le leadership des États-unis et sur le reste du monde.

Sommes nous en train d'assister à ce scénario aujourd'hui ? The feds get seriously creepy about climate change. Climate Change Challenges Transportation System In The U.S. Cauchemar arctique : ce que les autorités russes tentent de vous cacher. Climate change mitigation 'far cheaper than inaction' Tackling the global climate crisis could reap significant economic benefits for both developed and developing countries, according to a new report. The impacts of climate change and a carbon-intensive economy cost the world around US$1.2 trillion a year — 1.6 per cent of the total global GDP (gross domestic product), states 'Climate Vulnerability Monitor: A Guide to the Cold Calculus of A Hot Planet'. For this reason, "adapting to climate change is very likely a cost-effective investment in almost all cases and should be central to any climate change policy", the report says.

The new publication was launched during the 67th session of the UN General Assembly, in New York, United States, last month (26 September).

Agriculture et changement climatique

Démographie et dérèglement climatique. Un climat subtropical au pôle Nord, il y a 55 millions d'années (ECORD, forage ACEX) Les premiers résultats de la mission de forage arctique ACEX(1) indiquent que le pôle Nord a connu dans le passé un climat subtropical. La mission ACEX du programme IODP(2) est financée par le consortium européen ECORD(3), dont l'administrateur est l'INSU-CNRS. Grâce à l'analyse de carottes de sédiments forées jusqu'à 400m de profondeur sous le plancher océanique, les chercheurs vont pouvoir réévaluer l'histoire de la formation du bassin arctique. Maximum thermique du passage Paléocène-Eocène. Un article de Wikipédia, l'encyclopédie libre. Changements climatiques au cours des 65 derniers millions d'année. Climat : ça chauffe !

Climat – pic pétrolier : la double-pince se resserre. Humans Have Already Set in Motion 69 Feet of Sea Level Rise. Last week, a much-discussed new paper in the journal Nature seemed to suggest to some that we needn't worry too much about the melting of Greenland, the mile-thick mass of ice at the top of the globe. The research found that the Greenland ice sheet seems to have survived a previous warm period in Earth's history—the Eemian period, some 126,000 years ago—without vanishing (although it did melt considerably). This is what an ice-free Antarctica looks like. Check out the most detailed map of a continent never truly seen by human eyes: the de-iced surface of Antarctica. By virtually peeling back the frozen ice sheet and studying the land beneath, researchers can get a better sense of how the southern pole of our planet could react to climate change.

Bedmap2 was created by the British Antarctic Survey , and used decades of data to produce this detailed view of the frozen continent. Ozone layer will take five more decades to fully recover. Remember when the world came together to save the ozone layer — even Ronald Reagan and Margaret Thatcher? The Montreal Protocol, a treaty that went into effect in 1989, curbed the use of CFCs and other chemicals that tear up the planet’s UV-absorbing sheath of ozone. But that was nearly a generation ago — and things still haven’t been fully patched up in the lower stratosphere. The ongoing fragility of the ozone layer reminds us how long it can take for atmospheric conditions to stabilize after we have screwed them up.

The L.A.

Campagnes et appels à l'aide

An easy, cost-effective way to address climate change? Massive reforestation. This story was originally published by HuffPost and is reproduced here as part of the Climate Desk collaboration. As the implications of climate change become starker and the world faces up to a biodiversity crisis that threatens humanity’s existence, a group of campaigners from across the world are saying there is one clear way to get us out of this mess, but that governments are ignoring it. In an open letter published in the British newspaper, The Guardian, the group tells governments that the best and cheapest way to avert a climate catastrophe is to heal nature by restoring and replanting degraded forests and by better conserving the natural world.

“Defending the living world and defending the climate are, in many cases, one and the same. This potential has so far been largely overlooked,” say the 23 signatories to the letter. “We call on governments to support natural climate solutions with an urgent program of research, funding, and political commitment,” they added.


Claude Lorius. Réchauffement : signes inquiétants. Gaz à Effet de Serre. Géo-ingénieurie. Land Use Decisions Impact Forest Benefits. A new study by Harvard University's Harvard Forest and the Smithsonian Institution reveals that, if left unchecked, recent trends in the loss of forests to development will undermine significant land conservation gains in Massachusetts, jeopardize water quality and limit the natural landscape's ability to protect against climate change.

Scientists researched and analyzed four plausible scenarios for what Massachusetts could look like in the future. The scenarios were developed by a group of forestry professionals, land-use planning and water policy experts, and conservation groups. 10 Charts that Explain Climate Change Mitigation (plus 2 more that explain negotiation) Here’s a killer video that explains climate change with Tetris. These illustrations make climate change palpable — and hilarious. Quels refuges? Ecologie et paranoïa. 90 entreprises sont responsables de deux tiers des émissions mondiales de gaz à effet de serre.

Which fossil fuel companies are most responsible for climate change? – interactive. Aux racines de l’inconscience écologique.

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