News / Science & Technology

Extreme Weather Linked to Climate Change

  • Heavy rains in southeastern Brazil caused a dam in the town of Campo de Goytacazes to burst and flood the area, January, 2012. (Melissa Martins Casa Grande)
  • Days of heavy rainfall in what is typically one of the driest months of the year in Australia forced 13,000 people to evacuate their homes, March 2012.
  • Cattle decompose under the Saharan sun outside the town of Ayoun el Atrous in Mauritania. The food and nutrition crisis facing countries in West Africa’s drought-prone Sahel region continued to deteriorate at an alarming rate, May 2012.
  • Two weeks worth of rain fell in one day in Manlia, submerging half of the Philippines capital, July 2012.
  • Extreme drought conditions in the United States sparked more and extensive wild fires, like this one in Missouri’s Mark Twain National Forest, July 2012. (U.S. Forest Service)
  • Corn plants weakened by the drought lie on the ground after being knocked over by rain in Bennington, Nebraska. The U.S. Drought Monitor said the rainfall came too late to help already damaged corn crops, September 2012.
  • Super Typhoon Jelawat made landfall over Japan and affected the Korean peninsula with heavy rains and floods, September 2012.
  • For the third consecutive year, monsoon floods hit Pakistan's Sindh and Balochistan provinces, damaging more than 450,000 hectares of agricultural land. Almost 400,000 houses were partially or completely destroyed, September 2012. (Jean-Luc Siblot)
  • Vast stretches of Nigeria were hit by floods. Flood waters submerge a vehicle in the Patani community in Nigeria's Delta State, October 2012.
  • Wreckage on the coast of New Jersey from Hurricane Sandy, October 2012. (Credit: spleeness)
  • Hurricane Sandy flooded New York City streets, October 2012. (David Shanbone)
  • The United Nations requested $65 million to provide lifesaving aid to survivors of Typhoon Bopha in the Philippines, December 2012. (OCHA)
  • The United Nations Convention on Climate Change met in Qatar in December for annual talks to address the impact of climate change. (UNFCCC)
  • In 2012 polar ice sheets melted at an accelerating rate. In this photo surface melt water rushes along the surface of the Greenland Ice Sheet through a supra-glacial stream channel. (Ian Joughin)
Extreme Weather Events in 2012
Rosanne Skirble
No evidence has linked extreme weather events to climate change, until now. New research suggests devastating floods, droughts and storms were exacerbated by human-induced climate change caused by the burning of fossil fuels in our cars, factories and homes.

The new report, released by British and American climate agencies, analyzes a dozen extreme weather events which occurred worldwide in 2012.

“What they find is [with] about half of the events," said Thomas Karl, director of the NOAA National Climatic Data Center, "the analyses reveal compelling evidence that human-caused change was a factor contributing to the extreme event.”  

The National Oceanic and Atmospheric Administration (NOAA) and Britain’s Met Office Hadley Centre edited the report. Co-editor and NOAA scientist Thomas Peterson says natural weather patterns and human induced climate change are factors in the intensity and evolution of events.

Extreme Weather Linked to Climate Change
Extreme Weather Linked to Climate Changei
|| 0:00:00
...    
🔇
X

While last year’s spring and summer heat waves in the United States are attributed to normal atmospheric dynamics, climate scientists found that is not the entire story.

“They estimated that human caused climate change contributed about one-third of the magnitude of that warmth," Peterson said. "Or in terms of risk, greenhouse warming had already made very large seasonal departures from normal, like the temperatures in the spring in the Eastern U.S. about 12 times more likely to occur.”

The report also blamed human-caused climate change for the warmer ocean and atmosphere that drove the loss of sea ice in the Arctic.

That was not the case with Hurricane Sandy, the devastating storm that hit New Jersey and New York last October. Karl says the rare event might have occurred anyway.

“What the analysis was saying with the added increase of sea level, that just makes that kind of event incrementally worse," Karl said. "And in some of these events that is the kind of result that we are seeing.  However, in a number of these other events we could not detect a human influence.”

High rainfall in Britain, the United States, China and Japan were mainly due to natural variability, while the report detected a warming-climate connection in precipitation in Australia and New Zealand.  

“We are making great strides in our ability to understand these events," Karl said. "We attribute this to increased computational resource [and] improved quality of data sets. With these tools we continue to gain more insights into the many factors that affect the frequency and intensity as well as the spatial and temporal patterns of the extreme events.”  

And, Karl adds, the more accurate information collected by climate scientists can help policy makers and the public better understand and manage the impact of climate change.

You May Like

Photogallery Early Nigeria Results Show Buhari Leading; Tampering Concerns Mount

One local group monitoring polls is concerned politicians might use security agencies to 'fiddle with the election collation process' at state level More

UN: 7,300 Civilians Killed in Boko Haram Insurgency

A senior UN humanitarian official tells the United Nations Security Council 1,000 people have been killed this year More

Turkish President Warns Iran About Trying to Dominate Middle East

Warning comes amid growing concerns inside Turkey that it will be sucked into a sectarian conflict with its neighbor More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Film Tells Story of Musicians in Mali Threatened by Jihadistsi
X
Greg Flakus
March 30, 2015 6:48 PM
At this year's annual South by Southwest film and music festival in Austin, Texas, some musicians from Mali were on hand to promote a film about how their lives were upturned by jihadists who destroyed ancient treasures in the city of Timbuktu and prohibited anyone from playing music under threat of death. As VOA’s Greg Flakus reports from Austin, some are afraid to return to their hometowns even though the jihadists are no longer in control there.
Video

Video Film Tells Story of Musicians in Mali Threatened by Jihadists

At this year's annual South by Southwest film and music festival in Austin, Texas, some musicians from Mali were on hand to promote a film about how their lives were upturned by jihadists who destroyed ancient treasures in the city of Timbuktu and prohibited anyone from playing music under threat of death. As VOA’s Greg Flakus reports from Austin, some are afraid to return to their hometowns even though the jihadists are no longer in control there.
Video

Video With Coalition Airstrikes, Iraq Entering 'Last Page' of IS Battle

American warplanes joined Iraq's battle against the so-called 'Islamic State' in northern Iraq late Wednesday, as Iraqi ground troops launched a massive assault on Tikrit. Analysts say the offensive could take the coalition a step further towards Mosul, the largest city held by Islamic State forces. Others say it could also deepen already-dangerous sectarian tensions in the region. VOA's Heather Murdock has more from Cairo.
Video

Video Philippines Wants Tourists Spending Money at New Casinos

Tourism is a multi-billion dollar industry in the Philippines. Close to five million foreign visitors traveled there last year, perhaps lured by the country’s tropical beaches. But Jason Strother reports from Manila that the country hopes to entice more travelers to stay indoors and spend money inside new casinos.
Video

Video Civilian Casualties Push Men to Join Rebels in Ukraine

The continued fighting in eastern Ukraine and the shelling of civilian neighborhoods seem to be pushing more men to join the separatist fighters. Many of the new recruits are residents of Ukraine made bitter by new grievances, as well as old. VOA's Patrick Wells reports.
Video

Video Islamic State Prisoners Talk of Curiosity, God, Regret

Islamic State fighter, a prisoner of Kurdish YPG forces, asked his family asking for forgiveness: "I destroyed myself and I destroyed them along with me." The Syrian youth was one of two detainees who spoke to VOA’s Kurdish Service about the path they chose; their names have been changed and identifying details obscured. VOA's Zana Omer reports.
Video

Video Germanwings Findings Raise Issue of Psychological Testing for Pilots

More is being discovered about the co-pilot in the crash of Germanwings Flight 9525 in the French Alps. Investigators say he was hiding a medical condition, raising questions about the mental qualifications of pilots. VOA's Carolyn Presutti reports.
Video

Video Hi-tech Motorbike Helmet's Goal: Improve Road Safety

In cities with heavily congested traffic, people can get around much faster on a motorcycle than in a car. But a rider who is not sure of his route may have to stop to look at the map or consult a GPS. A Russian start-up company is working to make navigation easier for motorcyclists. Designers at Moscow-based LiveMap are developing a smart helmet with a built-in navigation system, head-mounted display and voice recognition. Zlatica Hoke has more.
Video

Video DOJ: Illinois National Guard Soldier Tried to Join ISIS

U.S. federal law enforcement agents arrested two suburban Chicago men accused of trying to join ISIS overseas, while also plotting attacks in the United States. As VOA’s Kane Farabaugh reports from the Midwest state of Illinois, one of those arrested is a soldier of the Illinois National Guard.
Video

Video New Wheelchair Is Easier to Use, Increases Mobility

Traditional push-rim wheelchairs create a lot of stress for arm, shoulder and neck muscles and joints. A redesigned chair, based on readily available bicycle technology, radically increases mobility while reducing the physical effort. VOA’s George Putic reports.
Video

Video Liberia's Almost Last Ebola Patient Grateful but Still Grieving

Beatrice Yardolo was to make history as Liberia’s last Ebola patient. Liberians recently started counting down 42 days, the period that has to go by without a single new infection until the World Health Organization can declare a country Ebola-free. That countdown stopped on March 20 when there was another new case of Ebola, making Yardolo’s story a reminder that Ebola is far from over. Benno Muchler reports from Monrovia.
Video

Video Cambodian Land Grabs Threaten Traditional Communities

Indigenous communities in Cambodia's Ratanakiri province say the government’s economic land concession policy is taking away their land and traditional way of life, making many fear that their identity will soon be lost. Local authorities, though, have denied this is the case. VOA's Say Mony went to investigate and filed this report, narrated by Colin Lovett.
Video

Video Space Program Status Disappoints 'Last Man on the Moon'

One of the films that drew big crowds last week at the annual South by Southwest festival in Austin, Texas, tells the story of the last human being to stand on the moon, U.S. astronaut Eugene Cernan. It has been 42 years since Cernan returned from the moon and he laments that no one else has gone there since. VOA’s Greg Flakus reports.

VOA Blogs

Circumventing Censorship

An Internet Primer for Healthy Web Habits

As surveillance and censoring technologies advance, so, too, do new tools for your computer or mobile device that help protect your privacy and break through Internet censorship.
More