Professeur Feuillage - Episode 02 - LA DEFORESTATION. 90 entreprises sont responsables de deux tiers des émissions mondiales de gaz à effet de serre. Une étude pointe les 90 entreprises qui ont produit le plus de gaz à effet de serre.
Les pétroliers Chevron, ExxonMobil, BP et Shell arrivent en tête. Parmi les groupes français, Total et le cimentier Lafarge sont les entreprises qui contribuent le plus aux émissions de CO2 et de méthane. Deux tiers des émissions mondiales de gaz à effet de serre accumulées dans l’atmosphère depuis le début de la révolution industrielle sont causées par seulement... 90 entreprises ! Les recherches menées par Richard Heede viennent d’être publiées par la revue scientifique Climatic Change. Les cinq premières entreprises privées sont les géants pétroliers américains Chevron (3,5 % des émissions) et ExxonMobil (3,2 %), la britannique BP (2,4 %), la néerlandaise Shell (2,1 %) et l’entreprise américaine ConocoPhillips (1,1 %). Series: Turn Down the Heat. Report No. 3, November 2014Turn Down the Heat: Confronting the New Climate Normal The third report in the Turn Down the Heat series finds that warming of about 1.5°C above pre-industrial times is already locked into the Earth’s atmospheric system by past and predicted greenhouse gas emissions, meaning more severe droughts, sea level rise, and increasing risk to food and water security, coastal communities, and livelihoods.
Without concerted action, the planet will continue to warm and extreme weather events that today occur once in hundreds of years could become the new climate normal, causing increased risks and instability. Report Turn Down the Heat: Confronting the New Climate Normal Executive Summary in English, Arabic, Chinese, French, Portuguese, Russian, Spanish Regional Summary in English, Arabic, Chinese, French, Portuguese, Russian, Spanish Infographic What Climate Change Means for Latin America, Middle East & Central Asia. Series: Turn Down the Heat. Gaza floods: UN declares state of emergency. Brisbane storm: Huge clean-up in Queensland. 28 November 2014Last updated at 01:05 ET Huge hailstones cause chaos in Brisbane, Australia A huge clean-up operation is under way in the Australian city of Brisbane after a severe storm swept across south-east Queensland.
The storm produced hailstones the size of golf balls, causing widespread damage. On a retrouvé la conférence environnementale ! En théorie, bien sûr, on sait qu’elle existe.
C’est même l’une des promesses de campagne du candidat Hollande : « Je prends l’engagement d’ouvrir un dialogue environnemental au même niveau que le dialogue social », avait-il affirmé au Congrès de France Nature Environnement. Fossil Free Europe – Europe Web Workshops. You’ll be able to view a livestream video on this page for the webinar Introduction to Divestment on Thursday 27th November at 19:00 CET (6pm UK time or your local time here).
If you do not see the video, please try refreshing the page. View in full screen if you are having trouble reading the slides or seeing the presenter. To ask questions or make comments throughout the webinar, please use either hashtag #webworkshop or comment on the Facebook event page. In the ski business, there are no climate deniers. Snow sport season may be officially upon us, but don’t get too excited yet.
Some of California’s most beloved ski runs are looking pretty brown, making opening days a little less celebratory and a lot more troubling for skiers and snowboarders hoping to hit the slopes across the Golden State. Yes, we can beat climate change — but it will take massive international government coordination. One of my recurring obsessions over the years has been the enormous difference between reducing carbon emissions and reducing carbon emissions enough.
There are thousands of ways to reduce emissions relative to a business-as-usual baseline, many of which are relatively painless. But reducing emissions enough to limit temperature rise to 2 degrees Celsius — the agreed-upon international target — is another matter entirely. Plenty of policies and strategies can achieve the former but not the latter. Record Drought Reveals Stunning Changes Along Colorado River. LAKE POWELL, Utah—In early September, at the abandoned Piute Farms marina on a remote edge of southern Utah's Navajo reservation, we watched a ten-foot (three-meter) waterfall plunging off what used to be the end of the San Juan River.
Until 1990, this point marked the smooth confluence of the river with Lake Powell, one of the largest reservoirs in the U.S. Clownfish lost at sea due to rising carbon dioxide levels. The tale of a clownfish that got lost at sea in the 2003 movie Finding Nemo may be a taste of things to come - as rising carbon dioxide levels could leave the fish unable to find their way around, say scientists.
Tests on clownfish larvae showed they became disoriented and were unable to find a suitable place to live if they were raised in seawater that had absorbed carbon dioxide from the atmosphere. The effect is potentially devastating for a wide range of fish populations because many rely on odours in seawater to seek out the right habitats to live in, according to researchers investigating the impact of greenhouse gas emissions on marine life.
The world's oceans soak up vast quantities of carbon dioxide released by burning fossil fuels. By absorbing the gas, oceans become more acidic. Global ocean pH has dropped around 0.1 points since preindustrial times. Samedi-sciences (152) : les volcans freinent le réchauffement climatique. Les éruptions volcaniques, mêmes mineures, qui se sont produites entre 2000 et 2013 pourraient avoir freiné de manière significative le réchauffement du climat planétaire, d’après une nouvelle étude parue dans la revue de l’Union américaine de géophysique (Geophysical Research Letters).
Cette étude dirigée par David Ridley, spécialiste de l’atmosphère au MIT, démontrent que les petites éruptions ont plus d’influence sur la température de l’atmosphère qu’on ne le pensait, et pourraient avoir fait baisser le thermomètre planétaire de 0,05 à 0,12°C. Water supplies dry up in Brazil as droughts continue to affect world's agricultural regions, destabilizing industrial farming.
The problem of a diminishing water supply is taking its toll on the residents of Brazil, pointing to the growing issue of a world that is running out of water and as a result, entering a global crisis which will likely have serious agricultural, social and economic consequences. Acid Maps Reveal Worst of Climate Change. The views expressed are those of the author and are not necessarily those of Scientific American.
Much of the change in climate change is happening to the ocean. Unications » Thoughts on the U.S-China Climate Deal. Good Timing Timing isn’t everything but it sure helps. After the mid-term elections, the mood in climate circles was getting pretty grim. We faced the prospect of a Republican-dominated House and Senate overturning emission controls, ramming through Keystone XL and elevating a climate denier (James Inhofe) to chair of the Senate Environment and Public Works Committee. Divestment - An Introduction for Europeans. Watch a year’s worth of CO2 swirl around the globe like a horrifying lava lamp.
Ever wondered what a year’s worth of carbon dioxide emissions looks like in our atmosphere? According to NASA’s new climate visualization, which condenses all the activity into a few minutes’ time, it’s surprisingly as beautiful to watch as it is worrisome. Called a Nature Run, the video simulation depicts greenhouse gases swirling and circulating around the globe, riding on the tails of the world’s changing weather patterns. Climat: les lenteurs et contradictions de la politique américaine - Page 2. Etats-Unis : vague de froid exceptionnellement précoce. Une descente d'air polaire massive et remarquablement précoce pour la saison, digne du cœur de l'hiver, s'est produite depuis le début de la semaine sur la majeure partie des Etats-Unis.
Des records mensuels de froid ont été battus dans certaines régions des Rocheuses (-33°C à Casper, -29°C à Limon). A la station de Denver (qui dispose de relevés depuis 1873), on a relevé - 25,5°C jeudi 13 novembre au matin : une valeur jamais observée aussi tôt dans l'hiver. Par ailleurs la région des Grands Lacs a connu de très importantes chutes de neige (jusqu'à 108 cm dans le Michigan). USA - Température minimale modélisée du jeudi 13 novembre 2014 Les vastes zones en bleu indiquent l'étendue du gel (Source NOAA)
Adaptation de l’agriculture aux changements climatiques – Recueil d’expériences territoriales. Adaptation de l’agriculture aux changements climatiques – Recueil d’expériences territoriales Le Réseau Action Climat - France vient de publier une nouvelle étude à destination des acteurs des territoires sur les stratégies d’adaptation de l’agriculture aux changements climatiques : "Adaptation de l’agriculture aux changements climatiques – Recueil d’expériences territoriales". Accord sur le climat : la réticence du Congrès aura-t-elle raison des promesses d'Obama ? We must manage global warming risks by cutting carbon pollution, top scientists conclude. Last week, the Intergovernmental Panel on Climate Change (IPCC) published its latest Synthesis Report, summarizing the scientific research on the causes and impacts of global warming, and how we can mitigate its consequences.
The report included various graphs showing how we’re changing the Earth’s climate, and concluded that humans are causing rapid and dangerous global warming. Human influence on the climate system is clear, and recent anthropogenic emissions of greenhouse gases are the highest in history. Recent climate changes have had widespread impacts on human and natural systems.Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia. The atmosphere and ocean have warmed, the amounts of snow and ice have diminished, and sea level has risen. Much of the report focused on the risks associated with these rapid climate changes. New study shows warm waters are melting Antarctica from below. Just this week, a new study has appeared which describes a clever method for measuring the flows of ocean currents and their impacts on ice shelves.
This study has identified a major mechanism for melting ice in the Southern Hemisphere. The paper, co-authored by Andrew Thompson, Karen Heywood, and colleagues is very novel. The scientists used sea gliders to identify water flows that bring warm waters to the base of ice shelves in Antarctica. The real story of US coal: inside the world's biggest coalmine. In the world’s biggest coalmine, even a 400 tonne truck looks like a toy. Everything about the scale of Peabody Energy’s operations in the Powder River Basin of Wyoming is big and the mines are only going to get bigger – despite new warnings from the United Nations on the dangerous burning of fossil fuels, despite Barack Obama’s promises to fight climate change, and despite reports that coal is in its death throes. At the east pit of Peabody’s North Antelope Rochelle mine, the layer of coal takes up 60ft of a 250ft trough in the earth, and runs in an interrupted black stripe for 50 miles. Climat : les Etats-Unis et le Chine se fixent (enfin) des objectifs chiffrés post 2020.
Pour la première fois, les deux puissances mettent sur la table des engagements chiffrés de lutte contre le changement climatique post 2020. A quatorze mois du sommet de Paris, cette annonce augure-t-elle d'un accord ambitieux ? In the red: West Coast waters are warmest in decades – what does it mean for winter? Sea surface temperature difference from normal, November 3 (NOAA) The waters along the west coast of North America, from Baja California in Mexico to the Gulf of Alaska, are warmer than they’ve been in decades. They may portend more drought for the West Coast this winter, and cold, stormy conditions in the East. The plume of warm water bleeding up the coast is nothing short of historic.
Writes the Seattle Times: “The North Pacific hasn’t been this warm ever, as far as anyone knows. Adds the Alaska Dispatch News: Activists Bring Koch Climate Change Denial Role To Wealthy Art Patrons. The World of Geoengineering. Le rapport du Giec amputé de deux pages jugées trop contraignantes. D'après le Washington Post, deux pages du rapport alarmant sur le réchauffement climatique ont été supprimées faute d'accord entre les différents représentants des gouvernements. Cachez-moi ce désastre que je ne saurais voir. Dans son cinquième rapport publié le 1er novembre, le Groupe d'experts intergouvernemental sur l'évolution du climat (Giec) tire la sonnette d'alarme, dressant un constat assez catastrophique du réchauffement climatique. Why two crucial pages were left out of the latest U.N. climate report.
Delegates attend the opening of the Intergovernmental Panel on Climate Change (IPCC) at the Tivoli Congress Center in Copenhagen on October 27, 2014. India air pollution 'cutting crop yields by almost half' Climat : 5 rapports du GIEC, 5 chiffres alarmants. The 10 things you need to know from the new IPCC climate report. Blue Mountains bushfire 'still a risk' Après le succès de la marche pour le climat de New York, trois défis pour le mouvement pour la justice climatique.
Réductions d'émissions : l'Union européenne renonce à montrer l'exemple.