Extreme Weather Event Map: Click on any icon on the map above to see details on the extent of an extreme weather event between 1990 and 2012.
Extreme Weather Events Map
The events shown above are examples of four types of extreme weather that scientists say are becoming more frequent and intense because of climate change: extreme heat, drought, wildfires, and heavy precipitation. Individual events cannot be blamed on any single cause. However, the long-term trends in these types of events demonstrate that extreme weather risk is rising as a result of climate change. Each new event is an opportunity to better understand our vulnerabilities and ways to cope with these rising risks. Examined together, these events also can help us evaluate the benefits of actions and policies aimed at reducing the emissions of heat-trapping gases that are warming the planet and “juicing up the weather”.
Here are two C2ES papers taking a closer look at the trends shown in the map and how we can respond:
- Extreme Weather and Climate Change: Understanding the Link, Managing the Risk
This primer examines the link between extreme weather and climate change, presenting it in a risk management framework that can help to clarify and manage the rising risk of extreme weather and prepare for future vulnerabilities.
- A Climate of Extreme Weather Events
This background paper outlines the evidence showing the increasing risk and incidence of flooding, heat waves, wildfires and drought in the United States.
Scientific American Series on Extreme Weather, Climate Change, and the Risks We Face
Published in three parts in June 2011, this series in Scientific American provides firsthand accounts of record-breaking weather events, insights into their links to climate change, and what can be done to manage the growing risks. The articles were written by science journalist John Carey with support from C2ES.
- Part One - Storm Warnings: Extreme Weather Is a Product of Climate Change
- Part Two - Global Warming and the Science of Extreme Weather
- Part Three - Our Extreme Future: Predicting and Coping with a Changing Climate
Additional C2ES Resources
Find answers to some of the most frequently asked climate science questions and learn about the realities and misconceptions of climate change science.
Learn how Hurricane Sandy is a stark reminder of the rising risks of climate change.
See the latest on drought and climate change.
Learn more about extreme heat and climate change.
Keep up to date on current extreme weather events, climate change, and risk management.
The Intergovernmental Panel on Climate Change (IPCC) released a “special report” (that’s what they call topical reports they publish in between their better known comprehensive assessments) today that is worth a close look for anyone who wants to start getting ready for a future with weirder and often harsher weather.
About a year ago I published an opinion editorial taking the Intergovernmental Panel on Climate Change (IPCC) to task for neglecting risk-based information to help decision makers cope with inevitable uncertainties about the future impacts of climate change:
Since uncertainty is endemic to the future, when the second IPCC assessment concluded in 1995 that ‘The balance of evidence suggests a discernable human influence on the global climate’, the IPCC should have reconvened around the risk implications of this probable human influence. Instead, it redoubled its effort to reduce physical science uncertainties [which will not be resolved before action is required].
This blog is co-written by Jay Gulledge
Recently, President Obama quipped about GOP presidential candidate and Texas governor Rick Perry: “You’ve got a governor whose state is on fire denying climate change.” While this type of election jousting risks further politicizing an issue that should be totally non-partisan, it raises a legitimate question: Is climate change increasing the risk of drought and wildfires in Texas?
Researchers must make a stronger case for funding in the face of a perfect storm of budget cuts and eroding political support, says Jay Gulledge.
This op-ed appears in Nature magazine.
By Jay Gulledge
The current U.S. debt crisis sets the stage for a potential tipping point in federal science spending. The ideology that government-sponsored science is crucial to the well-being of society has eroded along with the cold-war security agenda, which embraced and fortified science for decades. Meanwhile, science has been pulled repeatedly into political clashes on cultural issues. Against this backdrop, the global economic crisis portends a decade-long reduction in federal budgets. To avoid a permanent retraction of government support for research, the science community must be more strategic and aggressive in conveying the value of its work to society and in gaining robust support from politicians.
US federal science spending has long been rooted in the national security agenda. The National Science Foundation (NSF) was established shortly after the Second World War “to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense”. NASA was established less than 10 months after the Soviets launched Sputnik 1 in 1957, in a frenzied response to the Soviets’ early lead in developing ballistic missiles. Through the decades of the cold war, support for science straddled party lines.
But, after the fall of the Berlin wall, the United States stood as the sole great power and shifted its strategic emphasis from establishing scientific superiority to cultivating democratic movements in the developing world. The September 11, 2001, terrorist attacks reinforced this shift: security analysts believed that Al Qaeda and the Taliban, the main US enemies, would be defeated by winning hearts and minds, not by building a better mouse trap.
The erosion of the cold-war security doctrine therefore removed the bipartisan backstop to science funding. The quest for economic competitiveness might reasonably have replaced it, but has not done so. For example, the America COMPETES Act, passed in 2007 and reauthorized in 2010 by Democrat-run Congresses, planned to expand the NSF’s budget from US$6.6 billion in 2008 to $8.1 billion in 2010, but appropriators froze NSF budgets in response to the economic crisis. The current Republican-led House of Representatives is unlikely to support the increase of science budgets. Representative Ralph Hall (Republican, Texas), the recently installed chair of the House Committee on Science, Space and Technology, has said that the America COMPETES Act is “just too heavily drowned in money”.
Add to this the ‘culture wars’ that have gripped the United States for some time. They split the nation into two camps along divisive issues such as abortion, gun control and gay rights. In recent decades, some of the most contentious issues have put science in the crossfire, from evolution to tobacco health effects, stem-cell research and most recently my own area of expertise — climate change. This year, an informal survey of US Earth-science teachers found that climate change was second only to evolution in evoking protests from parents and school administrators (S. Reardon Science 333, 688–689; 2011).
These divisions threaten science budgets. Hall has expressed doubts about the scientific evidence for human-induced climate change and recently sponsored an amendment to the 2011 spending bill to stop the National Oceanic and Atmospheric Administration from spending money to set up a national climate service; the bill passed with support from 227 Republicans and 6 Democrats.
In the midst of all this, the debt-ceiling deal — formally the Budget Control Act of 2011 — has the potential to administer a massive shock to science budgets. The law requires non-defence discretionary spending (which includes science funding) to be cut by $917 billion over the next ten years, an average of 15 percent per year. On top of this, an automatic trigger will reduce spending on defence and on social entitlements — the sacred cows of Republicans and Democrats, respectively, if by the end of the year Congress cannot agree on ways to reduce the deficit by $1.2 trillion over the next decade. The two parties will therefore be strongly motivated to cut non-defence discretionary budgets as much as possible.
Whether future Congresses will soften the impact of the debt-ceiling deal depends on the pace of economic recovery, the evolution of the culture wars, and the public’s perception of the return on taxpayer investment in research. The scientific community can directly influence the last of these, but it needs a coherent strategy to do so. Like industry, it needs to document its net value to society and flaunt it. Unfortunately, through decades of cold-war complacency, the scientific community has developed a culture that runs counter to doing this.
An institution representing the U.S. science community is needed to undertake a broad, ongoing, quantitative assessment of the overall contribution of science to society and the economy and communicate these effects to the public and politicians through the media and other channels. As ever, the contribution to national security is a good place to start. Neutralizing today’s threats — terrorism, biological and chemical weapons, nuclear proliferation, and cyberwarfare — is an intensely scientific undertaking. Social sciences are needed to tackle joblessness, food and energy insecurity, financial disruptions and climate-change-induced destabilization of developing countries. Economic development, cost savings through innovation and efficiency enhancement, environmental quality, mental health and happiness are all affected by scientific research and development.
The American Association for the Advancement of Science is the traditional home for such cross-cutting efforts, and its work is laudable. But the ongoing public misunderstanding of science shows that the established approaches are inadequate.
There are signs of new ways of thinking. In March, the American Geophysical Union hosted a gathering of the presidents and top administrators of 17 US scientific societies and research consortia, from a broad spectrum of fields, to discuss how they might cooperate to improve public understanding of climate science — a unique and remarkable effort that should be expanded.
At the same time, science institutions need to enhance their value to society by incorporating socioeconomic benefits into their missions. Although some branches of academies already embrace this role to some extent — medical, law and engineering schools, for example — basic-science and social-science schools traditionally eschew it. In part this is because the production of social benefits is scantily rewarded. In the words of Anthony Janetos, director of the Joint Global Change Research Institute at the University of Maryland in College Park, at a 2009 meeting of the Center for a New American Security in Washington DC: “Nobody asks me, ‘How many policy decisions did your work inform?’ Instead they ask, ‘How many papers did you publish and how much grant money did you raise for the institute?’” Both should matter.
Peer-reviewed publications, research grants, and professional impact should remain the core metrics of success in academia. But the remit should be broadened so that recognized publications include assessment reports and science-based articles in public-policy, interdisciplinary, and business journals. Recognized grants should include those from mission-oriented agencies, foundations, and non-governmental organizations. And recognized impact must include influence on government, business, and civil-society decision makers.
The drive for international superiority during the cold war passively nourished a wide spectrum of sciences, the true value of which manifested in an array of benefits outside defence. In today’s chillier strategic and political climate, the scientific community must work hard to enhance and advertise those benefits. Those in academia who worry about the erosion of curiosity-driven science should have a greater fear: the erosion of science in general.
Jay Gulledge is the Senior Scientist and Director of the Science and Impacts Program at the Pew Center on Global Climate Change, and a Non-resident Senior Fellow at the Center for a New American Security.
During the last weekend of August, the Eastern U.S. braced for a walloping. Hurricane Irene spiraled up the Atlantic coast, ripping trees out of the ground in North Carolina and drenching much of the rest of the coast. When I heard that Irene was making her way up toward my hometown of Ridgewood, NJ, I had flashbacks to Hurricane Floyd, a devastating storm in 1999 that brought us much destruction and devastation.
Like it or not, climate change is now part of the “culture wars.” Like abortion, gun control, and health care, climate change divides conversations along political battle lines of left versus right. But if you listen closely to what is being said, you will find that people are talking past each other, engaged in a debate that has little to do with an evaluation of climate science. Instead, it is a clash about values, beliefs, and worldviews. Opinions are based largely on ideological filters that people use to understand complex issues, influenced strongly by the cultural groups of which they are a part and the opinions of thought-leaders and pundits whom they trust. The arguments are constructed around the frames by which people view the science, not the science itself.
“Don’t wait, don’t delay, we all hope for the best and prepare for the worst.” President Obama’s statement on Hurricane Irene urges the public to take precautions before one of the most significant northeast hurricanes in recent history. Mandatory evacuations have been ordered for much of the Atlantic seaboard, including coastal areas of New York City. All lanes of one major highway in New Jersey are headed in one direction only – west. The safest course of action is always to get out of the way of an approaching storm – to minimize the risk of harm when you can.
Texas climatologists have recently stated that the ongoing dry spell is the worst one-year drought since Texas rainfall data started being recorded in 1895. The majority of the state has earned the highest rating of “exceptional” drought and the remaining areas are not far behind with “extreme” or “severe” ratings by the U.S. Drought Monitor. So far, Texas has only received 6.5 inches of the 16 inches that has normally accumulated by this time of year.
Over the weekend, the National Weather Service issued an excessive heat warning across a huge swath of the country, putting 132 million people under a heat alert. This warning is only issued when a heat index of at least 105°F is expected for more than three hours per day on two consecutive days or when the heat index is expected to rise above 115°F for any length of time. Recently in Iowa, the heat index reached 131°F, a level normally found only along the Red Sea in the Middle East. Scientists warn that these types of events could become much more common in the future, thanks to climate change.
We are teaming up with Scientific American to explain the link between climate change and extreme weather. In a new three-part series featured on Scientific American.com, award-winning science journalist John Carey dissects the science, impacts, and actions to take regarding the record-breaking floods, heat waves, droughts, storms, and wildfires experienced across the United States and the world in the past year. The first installment appears today.