- Special Sections
- Public Notices
WASHINGTON (AP) — Most Americans are already feeling man-made global warming, from heat waves to wild storms to longer allergy seasons. And it is likely to get worse and more expensive, says a new federal report that is heating up political debate along with the temperature.
Shortly after the report came out Tuesday, President Barack Obama used several television weathermen to make his point about the bad weather news and a need for action to curb carbon pollution before it is too late.
"We want to emphasize to the public, this is not some distant problem of the future. This is a problem that is affecting Americans right now," Obama told "Today" show weathercaster Al Roker. "Whether it means increased flooding, greater vulnerability to drought, more severe wildfires — all these things are having an impact on Americans as we speak."
Climate change's assorted harms "are expected to become increasingly disruptive across the nation throughout this century and beyond," the National Climate Assessment concluded, emphasizing the impact of too-wild weather as well as simple warming.
Still, it's not too late to prevent the worst of climate change, says the 840-page report, which the Obama administration is highlighting as it tries to jump-start often-stalled efforts to curb heat-trapping gases. Said White House science adviser John Holdren: "It's a good-news story about the many opportunities to take cost-effective actions to reduce the damage."
Release of the report, the third edition of a congressionally mandated study, gives Obama an opportunity to ground his campaign against climate change in science and numbers, endeavoring to blunt the arguments of those who question the idea and human contributions to such changes. Later this summer, the administration plans to propose new regulations restricting gases that come from existing coal-fired power plants.
Not everyone is persuaded.
Some fossil energy groups, conservative think tanks and Republican senators immediately assailed the report as "alarmist." Senate Republican leader Mitch McConnell of Kentucky said Obama was likely to "use the platform to renew his call for a national energy tax. And I'm sure he'll get loud cheers from liberal elites — from the kind of people who leave a giant carbon footprint and then lecture everybody else about low-flow toilets."
Since taking office, Obama has not proposed a specific tax on fossil fuel emissions. He has proposed a system that caps emissions and allows companies to trade carbon pollution credits, but it has failed in Congress.
Republican Sen. David Vitter of Louisiana said the report was supposed to be scientific but "it's more of a political one used to justify government overreach." And leaders in the fossil fuel industry, which is responsible for a large amount of the heat-trapping carbon dioxide, said their energy is needed and America can't afford to cut back.
"Whether you agree or disagree with the report, the question is: What are you going to do about it? To us that is a major question," said Charlie Drevna, president of the American Fuel and Petrochemical Manufacturers. He called the report "overblown."
The report — which is full of figures, charts and other research-generated graphics — includes 3,096 footnotes referring to other mostly peer-reviewed research. It was written by more than 250 scientists and government officials, starting in 2012. A draft was released in January 2013, but this version has been reviewed by more scientists, including twice by the National Academy of Sciences which called it "reasonable," and "a valuable resource."
Environmental groups praised the report. "If we don't slam the brakes on the carbon pollution driving climate change, we're dooming ourselves and our children to more intense heat waves, destructive floods and storms and surging sea levels," said Frances Beinecke, president of the Natural Resources Defense Council.
Scientists and the White House called it the most detailed and U.S.-focused scientific report on global warming.
The report looks at regional and state-level effects of global warming, compared with recent reports from the United Nations that lumped all of North America together.
"All Americans will find things that matter to them in this report," said scientist Jerry Melillo of the Marine Biological Laboratory, who chaired the science committee that wrote it. "For decades we've been collecting the dots about climate change; now we're connecting those dots."
In a White House conference call with reporters, National Climatic Data Center Director Tom Karl said his two biggest concerns were flooding from sea level rise on the U.S. coastlines — especially for the low-lying cities of Miami, Norfolk, Virginia, and Portsmouth, New Hampshire — and drought, heat waves and prolonged fire seasons in the Southwest.
Even though the nation's average temperature has risen by between 1.3 and 1.9 degrees since record keeping began in 1895, it's in the big, wild weather where the average person feels climate change the most, said co-author Katharine Hayhoe, a Texas Tech University climate scientist. Extreme weather hits us in the pocketbooks and can be seen with our own eyes, she said.
The report says the intensity, frequency and duration of the strongest Atlantic hurricanes have increased since the early 1980s, but it is still uncertain how much of that is from man-made warming. Winter storms have increased in frequency and intensity and have shifted northward since the 1950s, it says. Also, heavy downpours are increasing — by 71 percent in the Northeast. Heat waves, such as those in Texas in 2011 and the Midwest in 2012, are projected to intensify nationwide. Droughts in the Southwest are expected to get stronger. Sea level has risen 8 inches since 1880 and is projected to rise between 1 foot and 4 feet by 2100.
Climate data center chief Karl highlighted the increase in downpours. He said last week's drenching, when Pensacola, Florida, got up to two feet of rain in one storm and parts of the East had three inches in one day, is what he's talking about.
The report says "climate change threatens human health and well-being in many ways." Those include smoke-filled air from wildfires, smoggy air from pollution, and more diseases from tainted food, water, mosquitoes and ticks. And ragweed pollen season has lengthened.
Flooding alone may cost $325 billion by the year 2100 in one of the worst-case scenarios, with $130 billion of that in Florida, the report says. Already the droughts and heat waves of 2011 and 2012 have added about $10 billion to farm costs, the report says.
AP writers Josh Lederman and Nedra Pickler contributed to this report.
__ Southwest faces even hotter, drier conditions
FLAGSTAFF, Ariz. (AP) — Hotter, drier conditions in the already drought-stricken Southwest are expected to further stress the region's water supply, threatening specialty crops and making forests more vulnerable to wildfires and tree-killing insects.
The Obama administration released the National Climate Assessment on Tuesday. Among the highlights in the Southwestern U.S., which include California, Nevada, Arizona, Utah, Colorado and New Mexico, are:
— AGRICULTURE: Artichokes, olives and apricots might not be as visually pleasing as drought and extreme weather continue to take a toll on the crops grown primarily in California. A combination of longer frost-free seasons, less frequent blasts of cold air and more heat waves is projected to intensify, leading to faster ripening. The report says farmers might not be able to adapt quickly enough. Trees that bear nuts and fruit that need winter chills will have lower yields. Vegetables grown in the warmer seasons might not be viable under hotter conditions.
— WATER SUPPLY: Southwestern cities know they must conserve water, but the report says that alone won't be enough to meet demand. Drier winters and early snowmelts are threatening the region's water supplies. The flow of water in the Sacramento-San Joaquin River Delta, the Colorado and Rio Grande rivers and the Great Basin were 5 percent to 37 percent lower between 2001 and 2010 than average flows in the 20th century. As water utilities across the Southwest try to prepare for the effects of climate change, key strategies for boosting supply will include expanding the treatment of wastewater and desalination.
— WILDFIRES AND BARK BEETLES: The number of acres scorched by wildfires could double in the southern Rockies and increase by 74 percent in California due to climate change, driving up firefighting costs, threatening public health and damaging homes and the economy. The report highlights the 2003 Grand Prix Fire in Southern California, which caused $1.2 billion in damage. Drought and warmer temperatures also prompt outbreaks of bark beetles, making the landscape even more vulnerable. From 1984 to 2008, wildfires and bark beetles have combined to kill trees across 20 percent of Arizona and New Mexico forests.
— HEAT WAVES: More than 90 percent of people living in the Southwest make their homes in cities, a figure higher than in any other region in the U.S. Rising temperatures leave people struggling to keep cool, resulting in skyrocketing demand for electricity and widespread power outages. California, Nevada, Utah, New Mexico, Colorado and Arizona have seen some their warmest summer months on record in recent years. Consecutive days of scorching heat also can be deadly, particularly among the elderly and people illegally crossing the border from Mexico. The nation's highest rates of heat-related deaths are in Arizona.