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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

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dana1981

Dana Nuccitelli is an environmental scientist at a private environmental consulting firm in the Sacramento, California area. He has a Bachelor's Degree in astrophysics from the University of California at Berkeley, and a Master's Degree in physics from the University of California at Davis.

Dana has been researching climate science, economics, and solutions since 2006, and has contributed to Skeptical Science since September, 2010.  He also blogs at The Guardian, and is the author of Climatology versus Pseudoscience.  He has published climate-related papers on various subjects, from the build-up of heat in the Earth's climate system to the expert consensus on human-caused global warming.

Follow him on Twitter.

Publications

Nuccitelli, D., Way, R., Painting, R., Church, J., & Cook, J. (2012). Comment on ocean heat content and Earth's radiation imbalance. II. Relation to climate shifts. Physics Letters A.

Cook, J., Nuccitelli, D., Green, S.A., Richardson, M., Winkler, B., Painting, R., Way, R., Jacobs, P., & Skuce, A. (2013). Quantifying the consensus on anthropogenic global warming in the scientific literature. Environmental Research Letters, 8(2), 024024+. 

Cook, J., Nuccitelli, D., Skuce, A., Way, R., Jacobs, P., Painting, R., Honeycutt, R., Green, S.A. (2014). Reply to Comment on ‘Quantifying the consensus on anthropogenic global warming in the scientific literature: a Reanalysis’. Energy Policy. DOI: 10.1016/j.enpol.2014.06.002

Nuccitelli, D. A., Abraham, J. P., Benestad, R. E., & Mandia, S. A. (2013). Comment on: Akasofu, S.-I. On the Present Halting of Global Warming. Climate 2013, 1, 4–11. Climate, 1(2), 76-83.
Abraham, J., Cook, J., Fasullo, J., Jacobs, P., Mandia, S., & Nuccitelli, D. (2014). Review of the consensus and asymmetric quality of research on human-induced climate changeCosmopolis2014(1), 3-18.

Benestad, R. E., Hygen, H. O., Dorland, R. V., Cook, J., & Nuccitelli, D. (2013). Agnotology: learning from mistakes. Earth System Dynamics Discussions, 4(1), 451-505.

Nuccitelli, D., Richter, M. J., & McCall, B. J. (2005). A search for interstellar carbon-60. In IAU Symposium (Vol. 235, p. 236P).

Encrenaz, T., Bézard, B., Greathouse, T., Holmes, S., Richter, M., Nuccitelli, D., & Forget, F. et al. (2006, February). Ground-based high-resolution IR spectroscopy of Mars: H2O and H2O2 mapping, search for CH4, and determination of CO2 isotopic ratios. In Second Workshop on Mars Atmosphere Modelling and Observations, held February.

 

Recent blog posts


University of Queensland offering free online course to demolish climate denial

Posted on 21 April 2015 by dana1981 &

Starting April 28th, 2015, the University of Queensland is offering a free Massive Open Online Course (MOOC) aimed at “Making Sense of Climate Science Denial.”

The course coordinator is John Cook, University of Queensland Global Change Institute Climate Communication Fellow, and founder of the climate science myth debunking website Skeptical ScienceCook’s research has primarily focused on the psychology of climate science denial. As he explains,

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7 comments


Price on carbon key to Canada tackling global warming, say researchers

Posted on 15 April 2015 by dana1981 &

65 researchers from provinces across Canada have published a report, Acting on Climate Change, that details how the country can successfully decarbonize its electric grid to slow global warming.

map

Map of researchers contributing to the Acting on Climate Change report.

The team unanimously endorsed putting a price on carbon pollution as a key strategy. Without a carbon fee, the price of electricity on the market doesn’t reflect its true costs to society. This is a market failure that economists call an “externality,” where the costs associated with a product (in this case, damages incurred via climate change) aren’t captured in its market price. Instead they’re paid by taxpayers in what could be considered a massive subsidy to the fossil fuel industry.

Most economists support putting a price on carbon pollution in order to correct this market failure. Acting on Climate Change notes that this could be accomplished with either a carbon tax or cap and trade system. So far, the province of British Columbia has implemented a highly popular and successful revenue-neutral carbon tax, while the province of Québec has adopted a cap and trade system in coordination with California as part of the Western Climate Initiative, and Ontario has just announced that it will also implement a carbon cap and trade system.

In addition to carbon pricing, some other key policies suggested in the report include,

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0 comments


The global warming 'pause' is more politics than science

Posted on 8 April 2015 by dana1981 &

The so-called 'pause' in the rate of global warming is false and distracting. It is a politically engineered excuse to avoid taking action on climate change.

Over the past 17 years, the Earth has warmed rapidly, accumulating energy at a rate equivalent to more than four atomic bomb detonations per second. That's over 2 billion atomic bombs worth of heat built up on our planet since 1998.

As discussed in a new book by one of us (Dana Nuccitelli) Climatology versus Pseudoscience, research has shown that much of the heat buildup during that time was deposited in the deep layers of the Earth's oceans, temporarily keeping it from the surface.

A new article co-authored by the other of us (Michael Mann), shows that natural ocean oscillations have recently acted to temporarily slow the warming of the Earth's surface temperatures, in combination with a relatively quiet sun, and active volcanoes.

Despite this temporary masking of some of the surface warming, 2005, 2010, and 2014 each set records for global surface temperature, and 2015 is thus far on pace to break the record once again. Such is the profound nature of human-caused global warming, that it has overcome these many short-term natural cooling influences.

Yet a purported global warming 'pause' (more aptly named the 'faux pause') is often used as an excuse by those who oppose taking action to curb climate change. For example, Republican Senator and US presidential candidate Ted Cruz recently said on American TV:

"Many of the alarmists on global warming, they've got a problem because the science doesn't back them up. In particular, satellite data demonstrate for the last 17 years, there's been zero warming."

This assertion is problematic for several reasons.

Read more...

17 comments


A revealing interview with top contrarian climate scientists

Posted on 6 April 2015 by dana1981 &

In 1990, University of Alabama at Huntsville scientists Roy Spencer and John Christy created a data set that estimates the temperature of the Earth’s atmosphere by using instruments on satellites (microwave sounding units) that measure microwave radiation in the atmosphere. According to their latestestimates, the Earth’s lower atmosphere has warmed significantly since satellite measurements began in 1979, but not quite as fast as thermometer measurements of temperatures at the Earth’s surface.

Spencer and Christy have also long disputed the degree to which humans are contributing to that warming, and have thus often been called to testify before Congress by policymakers seeking justification to oppose climate legislation. On the 25th anniversary of their satellite data set, Alabama.com interviewed the pairto discuss their science and climate contrarianism. The resulting discussion was quite revealing. 

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14 comments


Global warming and drought are turning the Golden State brown

Posted on 30 March 2015 by dana1981 &

There’s a rapidly growing body of scientific research finding that California is in the midst of its worst drought in over a millennium, global warming has made the drought worse, and decades-long mega-droughts could become the norm in the state later this century. A new study published in the Proceedings of the National Academy of Science (PNAS) by scientists at Stanford University adds to this bleak picture for the Golden State.

There has been some confusion about the human contribution to California’s drought, now entering its fourth consecutive year, because some reports have said that humans have not influenced the amount of precipitation falling in the state thus far. This is a subject of debate – some studies have found evidence of a human ‘fingerprint’ in the high pressure ridge that’s diverted storms away from California over the past three years. But overall, while precipitation has been low, there have been a few years in the historical record where it was lower.

However, evidence indicates that California is in the midst of its worst drought in over 1,200 years. The new PNAS paper helps reconcile these two facts. As an accompanying commentary by Michael Mann and Peter Gleick notes,

Part of the challenge is that the term “drought” can be defined in different ways: for example, meteorological, hydrological, agricultural, and socioeconomic drought. Drought, most simply defined, is the mismatch between the amounts of water nature provides and the amounts of water that humans and the environment demand.

California’s worst droughts have historically happened in years that are both dry and hot. While humans may or may not be influencing the amount of rain falling in the state, we are indisputably making it hotter. If we could flip coins representing precipitation and temperature each year, the first could come up wet or dry, but humans are weighting the second such that it will increasingly come up hot. This will make conditions like those that caused California’s current record-breaking drought return more often as the planet keeps warming.

PNAS
California temperature (°F) and precipitation (inches) anomalies from January 1895 to November 2014, plotted as 3-year anomalies relative to 1901–2000 mean. Data from the National Climatic Data Center nClimDiv dataset.  Source: PNAS; Mann & Gleick (2015).

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13 comments


Ipso proves impotent at curbing the Mail's climate misinformation

Posted on 27 March 2015 by dana1981 &

David Rose is a writer for the UK tabloid Mail on Sunday, and is known for his inaccurate and misleading climate change coverage. Rose is particularly fond of cherry picking data to hide the rapid decline in Arctic sea ice. In August 2014, he published a piece focusing on the fact that at the time, there was more sea ice in the Arctic than during the record-breaking summer of 2012. Rose’s misguided focus on noisy short-term data is underscored by the new record low winter Arctic sea ice extent we experienced this year, less than seven months after his piece was published.



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