Showing posts with label flammable. Show all posts
Showing posts with label flammable. Show all posts

Global Fire Map (May 1 - 10, 2014)

Video - Southern California's Firenadoes are Spawned by Climate Change Induced Drought

Video - Southern California's Firenadoes are Spawned by Climate Change Induced Drought
In Southern California, climate change induced drought is fueling strong winds which are fanning wildfires and spawning what is known as "firenadoes." Also known as fire whirls these spiraling column shaped vortexes of flames look like something out of an apocalyptic vision.

The key components of firenadoes, are the related elements of drought and strong winds. In the case of the fires in Southern California, Santa Ana winds are funneling warm and dry air toward the coast, when high pressure moves over the deserts of inland California it reverses the typical west-to-east wind flow from the ocean. During a drought, these Santa Ana winds drastically drop humidity levels which cause hurricane force winds in the mountains.

Although firenadoes can occur with any sized fire, they are more commonly associated with large fires. They are created by cool air rushing to take the place of hot air which form vortexes. Firenadoes are more likely to occur where winds are forced to change directions, such as near a grove of trees. Firenadoes range in size from less than 1 foot to more than 500 feet in diameter.

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Climate Change Induced Wildfires Burn Out of Control in Southern California

One hundred and twenty five thousand people have been evacuated and businesses, schools and amusement parks have been shut down in Southern California due to the threat from wildfires. Many homes have been destroyed and millions of dollars of damage has been reported so far. The devastating spate of fires have also spawned what is being called "firenados", a surreal twister made of flame. The Fire Department is fighting the flames and has deployed water-bombers.

Local officials have indicated that there is a connection between California's wildfires and climate change. According to scientists, climate change has lengthening the fire season in California by several days per year. The Western wildfire season is now 78 days longer than it was in the mid-1980s. This year, due to worsening drought, the season effectively never stopped.

Wildfires in San Diego County, have forced the closure of schools, widespread evacuations and the devastation of approximately 10,000 acres which has prompted the governor to declare a state of emergency.

Triple digit temperatures are compounding the problem. The 102-degree reading in Oxnard, is the hottest temperature ever recorded in the month of May and just shy of the all time record for the area. Other areas in Southern California have also broken records.

The 400 acre Poinsettia Fire near Carlsbad has already claimed at least one victim and the Tomahawk fire that broke out on the Camp Pendleton Marine Base north of San Diego has destroyed more than 100 acres prompting evacuation of military housing and a naval weapons station.

On a brighter note crews have made substantial headway against the Bernardo Fire allowing people to go back to their homes. The Bernardo fire has burnt more than 1,500 acres. A total of 18,400 people were evacuated in and around San Marcos, north of San Diego. A total of 3 million people live in the area.

Firefighting efforts are being helped by less wind and cooler temperatures. However, prolonged draught and heat have made the area very vulnerable to forest fires.

Southern California has experienced some devastating fires in the past including the 2003 Cedar Fire scorched more than 437 square miles, nearly 3,000 buildings and killed 15 people. Another devastating wave of fires swept the San Diego region in 2007.

The wildfire situation is related to climate change induced drought that has taken hold across California. This does not bode well for the coming summer as the entire state is now suffering from “severe,” “extreme,” or “exceptional” drought conditions. This unprecedented wildfire risk is yet another painful and expensive corollary of our climate impacts.

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Bushfires, Climate Change and the Insane Policies of Australia's Federal Government

Although you would never know it by looking at the policies of Australia's ruling government, there is a clear connection between bushfires and climate change. January's record breaking heat waves have created the right conditions for a number of Australian bushfires that broke out in February. High temperatures dried out the landscape and contributed to the spread of fires. The flames are being fanned by high winds. The largest bushfires in and around Snowy River, National Park, are producing dense clouds of smoke. The three largest fires have already burned around one hundred thousand hectares (this figure does not include a number of other smaller fires).

Fire officers in the state of Victoria are urging residents to be prepared to evacuate and a town of 3,000 is considering evacuating in Queensland after two years with almost no rainfall.

At one point Prime Minister Tony Abbott's climate denying Federal Government rejected claims that bushfires are linked to climate change. However, a report by scientists indicates the two are indeed linked. At the end of last year Abbott's top business adviser, Maurice Newman referred to the "delusion" of global warming. These comments came as Australia ended its hottest year in more than a century of data collection, with 2013 eclipsing the record set in 2005. The new government is working hard to increase coal exports including a terminal that endangers the Great Barrier Reef.

The Climate Council, which was called the Climate Commission before it was de-funded by the new Government, says climate change is increasing the probability of extreme fire weather days and is lengthening the fire season. Although the Climate Commission was dismantled by the new government, its members sought public donations to continue their work and now call themselves the Climate Council.

It is hardly difficult to understand that greenhouse gases, like emissions from coal plants, make the world (and Australia) hotter, and drier and this increases fire risks and fuels larger burns.

© 2014, Richard Matthews. All rights reserved.

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The Rim Fire: More Evidence of Climate Change

The Rim fire currently engulfing California is the latest example of increasingly destructive wildfires caused by climate change. In the Southern Yosemite area alone there have already been four large fires this summer.

According to Matthew Hurteau, assistant professor of forest resources at Penn State University, warming temperatures, prolonged drought, and a century’s worth of fire suppression policy are “priming the system to make it more flammable.”

California has experienced its driest year in modern history with record-low 4.58 inches of precipitation during the period from January to June 2013. According to the National Oceanic and Atmospheric Administration that is nearly 10 inches below average. A major heat wave in July also added to the dryness of the soil.

Climate change is making wildfires more frequent and more intense. Fires are a natural part of the forest ecology, but climate change is changing the balance and making fires more frequent, more pervasive and more destructive.

The Rim Fire has burned 160,000 acres with about 22,000 of those acres in Yosemite. It is harder for animal and plant species to adapt to this new brand of climate change induced fire. There are a number of plant and animal species under threat, including the iconic giant sequoias. Although sequoias are normally able to withstand forest fires, this hotter type of fire poses a real risk, so much so that sprinkler systems have been set up around some of the giant trees.

Other threatened species include mountain yellow-legged frog, and the rare and endangered Yosemite great gray owl. Dozens of homes have burned down and the fire threatens water and power sources for San Francisco.

The rim fire is yet another example of fires caused by global warming. According to NIFC data, there are more large fires (greater than 10,000 acres) burning now than at any time in the past 40 years, and the total area burned each year has also increased. The top eight worst wildfire years since 1960, in terms of acres burned, have all occurred since 2000.

For more information on the link between forest fires and climate change click here.

© 2013, Richard Matthews. All rights reserved.

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Video - How Climate Change Fuels Wildfires



From the Rim fire currently engulfing California to the Black Forest fire that burned more than 500 homes in Colorado, wildfires are becoming more destructive. In this video Matthew Hurteau, Assistant Professor of Ecosystem Science and Management at Pennsylvania State University explains the link between climate change and wildfires. Warming temperatures, prolonged drought, and a century’s worth of fire suppression policy are “priming the system to make it more flammable.”

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