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Climate Report Nails Risk Communication

The views expressed are those of the author and are not necessarily those of Scientific American.

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The National Climate Assessment released Tuesday by the White House is a masterful piece of science and risk communication. Senior science writer Susan Joy Hassol, who turned massive contributions from hundreds of scientists into an accessible, persuasive report that will play an important role in getting the U.S. to act on climate change, deserves great credit.

Will the report raise enough public concern about climate change enough to produce the political mandate for action that so many think is necessary? Probably not. But will it help leaders take the actions they need to take even without that mandate? Absolutely.

The language of the report is clear and accessible to the average reader. Facts are well explained. The supporting evidence behind those facts is provided and simplified for the average reader, but not overly dumbed down. Graphics summarize and reinforce the impact of the information. Basic questions about the workings of climate change and its impacts, present and future, are answered. What science is still unsure about is honestly acknowledged.

But beyond those science communication basics, the National Climate Assessment intelligently applies social science insights into how to communicate about risk in order to maximize the impact the communication has, not just on how well the reader understands the issue, but also on how they feel about it. It applies research on the psychology of risk perception to the challenge of communicating, not just so people get the facts, but so they care.

Most climate change communication has framed the issue as a future threat. Future risks don’t worry us as much as threats that are imminent or current. The basic message of the National Climate Assessment, offered repeatedly through the entire report, is that climate change is not something we need to worry about tomorrow. It’s something to worry about now. “Climate change, once considered an issue for a distant future, has moved firmly into the present,” it reads.

The report makes ample use of graphics in support of the case that climate change is happening now. Note the time frame in this chart:

National Climate Assessment

Most climate change communication has framed the issue as a threat to polar bears, to distant places like glaciers and oceans, or to people somewhere else. Abstract threats to others don’t concern us as much as those that put us personally at risk. The National Climate Assessment makes climate change local and describes the threat in terms that people can relate to:

“Americans are noticing changes all around them. Summers are longer and hotter, and extended periods of unusual heat last longer than any living American has ever experienced. Winters are generally shorter and warmer. Rain comes in heavier downpours. People are seeing changes in the length and severity of seasonal allergies, the plant varieties that thrive in their gardens, and the kinds of birds they see in any particular month in their neighborhoods.

Other changes are even more dramatic. Residents of some coastal cities see their streets flood more regularly during storms and high tides. Inland cities near large rivers also experience more flooding, especially in the Midwest and Northeast. Insurance rates are rising in some vulnerable locations, and insurance is no longer available in others. Hotter and drier weather and earlier snow melt mean that wildfires in the West start earlier in the spring, last later into the fall, and burn more acreage.”

A clickable graphic even lets you read the details about the region where you live. Climate change is described as, well, about the climate. But who wakes up and checks the global climate report? We check the local weather, and the National Climate Assessment provides that too, at least on a regional scale.

National Climate Assessment

National Climate Assessment

Climate change has been made a polarized issue largely by those who ideologically oppose the kind of big government intervention that solutions to climate change will require. The National Climate Assessment addresses the questions the skeptics raise. But following the research on science communication that says the most effective way to address such ideologically based skepticism is to avoid sounding confrontational, the report’s section on Frequently Asked Questions answers the skeptics in a respectful, neutral voice. Throughout the report, the tone is direct, evidence-based and credible, at times dramatic, but never strident. That builds trust and makes the communication more persuasive.

Nonetheless, it is unlikely this single body of work, as informationally rich and shrewdly framed as it is, will prompt much of a change in public opinion, at least not enough, fast enough, to give leaders the public mandate that would make action politically easier. First, despite all the attention the report will get (as part of the rollout, President Obama did interviews with prominent TV weathercasters who polls show have high public recognition and trust), most people probably won’t hear anything about it, and a tiny minority will read any of it. Second, even those who do read some part of the report will probably not suddenly feel personally threatened by climate change enough to shift how much they care about the issue. Psychologically, climate change just doesn’t scare people that much. This report can’t change that.

But the report will play a role in getting the U.S. to take action on climate change. It will almost surely provide a solid basis on which President Obama will claim, as he has in the past, “The debate is over and it’s time to act.” He will use the report to minimize the impact of the deniers and skeptics on the majority of Americans. This is a classic communication strategy. Don’t try to change the minds and hearts of the most vociferous and ideologically motivated stakeholders. Just minimize their impact by making your case with the larger audience. The convincing case the report lays out will help the President do that. This is clearly the strategy, as acknowledged to Bloomberg News by John Podesta, the President’s chief adviser on climate change:

[Podesta] said the White House will focus on climate-change policies this week, using executive actions to address the problem as most Republicans in Congress reject the scientific consensus.

“The president, under existing law, has the authority to take action,” Podesta said at a briefing today. Congress “is challenging right now, but hopefully this will change some minds” and “climate deniers will recede,” he said.

Presidential executive actions to be announced in coming days may include regulations on the greenhouse gas emissions of existing power plants, allocation of funds to adaptation programs, Energy Department investment in clean energy to replace fossil fuels, and more. The National Climate Assessment provides the foundation for these actions and makes them politically more acceptable.

The climate skeptics whose ideological and group identities are tied to the fight against action will not be swayed. They are already picking the report apart. But the National Climate Assessment makes the case that for action on climate change so credibly and persuasively that history is likely to look back on it as an important step that finally pushed America to take the threat of climate change as seriously as the danger demands.

David Ropeik About the Author: David Ropeik is an Instructor at the Harvard Extension School and author of 'How Risky Is It, Really? Why Our Fears Don’t Always Match the Facts'. Follow on Twitter @dropeik.

The views expressed are those of the author and are not necessarily those of Scientific American.

Comments 11 Comments

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  1. 1. Jerzy v. 3.0. 5:11 am 05/7/2014

    Figure 1. has no values on Y-axis. Figure 2. has change of ‘very heavy’ precipitation – without definintion what is ‘very heavy’.

    You call it a good communication? If tobacco industry produced such graphs, SciAm would be having a laugh all day.

    Link to this
  2. 2. SteveGoddard 5:31 pm 05/7/2014

    The US is having its coldest start to the year on record. No one is going to pay attention to this nonsense.

    Give it up already.

    Link to this
  3. 3. SciAmSince1978 5:54 pm 05/7/2014

    People will respond better to a cost benefit study. How much will we spend and how much will the temperature drop and what is the confidence level? Note US emissions are at 1994 levels and trending downward according to the EPA. Advocating unilateral action by the executive branch is disturbing on a number of levels.

    Link to this
  4. 4. DavidRopeik 8:34 pm 05/7/2014

    Jerry, lord how shallow. Yeah, that one flaw ruins the whole enterprise. LORD!

    Steve, The either ideology or ignorance that compels such outright rejection of one of the most overwhelmingly agreed upon findings of science, after one of most exhaustive research projects in human history, now borders on immoral. Do you benefit from a society in which you live? Your obstinacy denial of evidence selfishly
    threatens the rest of us. You may worry about big government. That pales against the physical perils of a dramatically warmer world.

    Link to this
  5. 5. coraifeartaigh 12:04 pm 05/8/2014

    Superb summary. Reports like this give me some hope that the message will finally resonate with most citizens, even if a minority will always feel they understand climate science better than the scientists.

    Link to this
  6. 6. SteveGoddard 12:20 pm 05/8/2014


    The American Meteorological Society took a poll of its member in December. 52% said that man is the primary driver of global warming. 37% of professional forecasters believe that man is the primary driver of global warming.

    Instead of parroting “consensus” propaganda, you would be wise to check out the facts for yourself.

    Link to this
  7. 7. SteveGoddard 12:23 pm 05/8/2014

    I converse with many professional weather forecasters every day. I don’t know a single one who believes that CO2 drives the climate.

    Unlike academics, their livelihood depends on being correct.

    Link to this
  8. 8. Lentil 4:35 pm 05/12/2014

    Just a few comments: Recent extreme weather cannot be blamed on global warming, because there has not been any global warming for about 17 years. There is only low correlation between CO2 and global temperatures (see the reference below). US winter temperatures show no trend. The IPCC climate models which produced the projected temperatures did not predict the hiatus in temperatures and have not successfully hindcasted. This assessment is not based on facts.

    Link to this
  9. 9. Lentil 5:48 pm 05/12/2014

    For the real facts check out the following:
    A Factual Look at the Relationship Between Climate and Weather
    Subcommittee on Environment
    Committee on Science, Space and Technology
    11 December 2013
    Testimony of John R. Christy
    University of Alabama in Huntsville.

    Link to this
  10. 10. hkraznodar 5:13 pm 05/22/2014

    @Lentil: 404 File or directory not found.

    Link to this
  11. 11. Lentil 4:56 pm 05/23/2014

    try this:

    Link to this

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