March 30, 2010

Southern Hemisphere Hurricanes – Not Changing?

Filed under: Climate Extremes, Hurricanes

Have you heard of all the hurricane activity going on right now in the Southern Hemisphere? We are moving into the hurricane season for the Southern Hemisphere, and if you haven’t heard much about it, the reason is that right now there is zero hurricane activity anywhere on the planet. Of course, there will be a hurricane in the Southern Hemisphere in the coming weeks, and some reporter will immediately invoke global warming – this is our guaranteed prediction!

The latest research on trends in hurricanes in the Southern Hemisphere comes from a team of seven scientists from Australia’s National Climate Centre and the Centre for Australian Weather and Climate Research. Kuleshov et al. begin with the usual proclamation that “Trends in tropical cyclone (TC) occurrences and intensity, and possible physical mechanisms for change, have been discussed widely in recent years.” That is an understatement – we at World Climate Report have posted no end of essays on the topic based on articles on the subject that seem to appear in the literature over and over. Kuleshov et al. review key articles suggesting a substantial increase in intense TC’s for the globe, the North Atlantic, and the northwest Pacific. However, they state “Other authors have rejected these findings, mainly on the basis of the argument that changes have been so great in observation technologies and analysis techniques that the reported changes are artificial, and not due to any actual trends.”

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March 5, 2010

European Storms

The winter of 2009-2010 has produced its fair share of winter storms in the Northern Hemisphere – recall that President Obama arrived back in Washington from his appearance at the Copenhagen climate conference only to find the White House grounds buried under near-record amounts of snow. Europe and Asia have seen their share of large winter storms as well during the 2009-2010 winter. Hardly a large storm goes by without someone, somewhere suggesting that whatever we are seeing, it is related to “climate change”. If one looked no further than the Technical Summary of the IPCC, they would discover that the IPCC is rather quiet on this subject with no claims whatsoever that winter storms will increase in frequency, magnitude, duration, or intensity due to the ongoing changes in atmospheric composition.

Two new articles are out that further confirm that global warming has not and will not be causing mid-latitude winter storms to become some new destructive result of the greenhouse effect.

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January 27, 2010

Upward Trend in Hurricane Damage in China?

Filed under: Climate Extremes, Hurricanes

A recent article has appeared in the Bulletin of the American Meteorological Society regarding trends in tropical cyclone damages in China. The article was generated by three Chinese scientists from the China Meteorological Administration’s National Climate Center and Nanjing University’s Laboratory of Meteorological Disaster. The authors note that “This research was supported by Ministry of Science and Technology of the People’s Republic of China through the National Science and Technology Support Project and the National Natural Scientific Foundation of China.”

Let’s start with a key figure (Figure 1) in which Zhang et al. reveal an upward trend in damage from tropical cyclones (a.k.a., hurricanes, typhoons) over the 1983 to 2006. They note that “In addition to the heavy economic losses in individual years, the time series shown” “contains an upward trend over the past 24 yr, which is statistically significant at the 95% level. On average, the losses caused by landfalling tropical cyclones in China mainland increased by 1.19 billion yuans each year.” We could see this result spun several different ways. On one hand, we could write about how poor China is being ravaged by hurricanes fueled-up thanks to global warming. On the other hand, we could say, see, China is now the world leader in greenhouse gas emissions, and they are suffering the consequences. As we are about to see, there is a lot more to this story about increasing damages in China.


Figure 1. Estimated direct economic losses caused by landfalling tropical cyclones in billion yuans (thin, inflation adjusted to 2006) and the corresponding 5-yr running mean (thick) (from Zhang et al., 2009).

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January 21, 2010

More or Less Intense Hurricanes?

[see update at bottom of post]

A new article has just been published in the January 22, 2010 issue of Science magazine which finds that there will be a large increase in the frequency of the strongest hurricanes in the Atlantic basin as the climate changes from increasing anthropogenic greenhouse gas emissions. But a closer look at the results shows that this model-based result is produced by a hurricane model which under-simulates the frequency of strong storms in today’s climate. And that, despite the projected increase in intense hurricanes, the frequency of those storms projected by the model to occur by the end of the 21st century is considerably less than the frequency of intense hurricanes actually observed in the current climate. If the model doesn’t work for the present, why should we trust it for the future?

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January 14, 2010

Listening to Johnny Chan

Filed under: Climate Extremes, Hurricanes

OK – who is Johnny Chan? Thanks to ESPN stations, many Americans have come to know Johnny Chan as one of the world’s best and most entertaining poker players. He is on television as much as Tiger Woods, still going strong since winning the championship event of the World Series of Poker in 1987 and 1988. Chan has won 10 overall World Series of Poker bracelets thereby tying him for second with the great Doyle Brunson in that category. Chan was inducted into the Poker Hall of Fame in 2002, and he appeared as himself in the movie Rounders. You might be wondering what Johnny Chan has to do with the climate change debate … well, it depends on which Johnny Chan we are talking about!

One of these men is Johnny Chan the poker expert and the other is Johnny Chan the hurricane expert – can you decide?

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December 27, 2009

Winter Storms Update

Filed under: Extratropical Storms

If we happen to see an unusually large number of winter storms this year, we suspect some reporter or some scientist will insist we are witnessing the effects of global warming, or at least declare we are witnessing climate change before our very eyes. Oppositely, if this year’s winter storms are infrequent, we will expect to learn from someone that we have seen the effects of climate change. In fact, in a recent paper in the International Journal of Climatology, the authors begin their piece noting “One area of growing concern in climate science is the impact that global warming could have through modulations of the nature and characteristics of naturally occurring extreme events, such as severe mid-latitude storms.” In the very next sentence, the research team from the United Kingdom and Australia state “However, both observational and modelling studies of historical and future storminess patterns and scenarios are divided on the role that global warming has played, or could play, in changing patterns of mid-latitude storms”. Once again, we find any straightforward link between global warming and winter storms is a bit more dicey than originally thought … there is always more to the story.

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February 9, 2009

1,000 Years of Boston Hurricanes

Filed under: Climate Extremes, Hurricanes

The next highway from Boston to Los Angeles can be paved with articles at odds with the notion that hurricanes are becoming more fierce or frequent or longer-lived thanks to you driving an SUV or flying to Hawaii for a vacation. Our World Climate Report achive is so chalked-full of material on this subject, we wonder if it can stand any more? If the greenhouse crusade would for once say they are wrong on this subject, we would give it up. But with literally millions websites still loudly promoting the link between hurricanes and warming, we are going to stay in business for another essay on the topic.

A research team from the University of Massachusetts, the University of Pittsburgh, and institutions in Germany and Québec focused on hurricane activity near Boston over the past 1,000 years with substantial funding from NSF, NOAA, and UMass. Besonen et al. begin their article noting “The natural variability of hurricane activity on centennial and longer timescales is poorly known because instrumental records extend back just ~130 years, and aircraft reconnaissance and satellite observations only began in the mid-1940’s. Interest is heightened in light of studies suggesting that hurricane activity may increase due to anthropogenic global warming, and, more recently, that such an increase is already perceptible.”

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December 30, 2008

Lesson of the Lesser Antilles

Filed under: Climate Extremes, Hurricanes

Are you tired of winter yet? How about a vacation to some warm tropical island with outstanding golf and scuba (excellent winter sports)? If we suggest the Lesser Antilles (also know as the Caribbees), you might immediately agree; a second later, you might realize the shortcomings of your geography training and wonder where on Earth you are going for this vacation.

As seen in the map below (Figure 1), the “Lesser Antilles” include islands that wrap around the eastern end and southern fringe of the Caribbean Sea. The names of the subgroups include the Leeward Islands in the north, Windward Islands to the south, and the Leeward Antilles north of Venezuela. You will find names like the Netherlands Antilles and the Greater Antilles – you will immediately get the “Antilles willies” trying to figure out what names correspond to the various islands! Columbus arrived in these parts in 1492 and thought he was close to India, and the term “West Indies” was the popular as well. Various European languages still refer to the Caribbean Sea as the “Sea of Antilles.” The origin of the word “Antilles” is still debated with some who believe it is related to “Atlantis” while others think it came from the Latin ante-ilha (i.e. “the island out before” or “the island in front of”). You decide!

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December 11, 2008

Paleostorms of Southern France

Filed under: Climate Extremes

The United Nations Climate Change Conference is well-underway in Europe and environmental groups are lobbying to reinforce every pillar of the greenhouse gas – global warming story. According to their reports, any severe storm any place on the planet can now blamed on global warming. Thunderstorms, tornadoes, hurricanes, winter storms – it just doesn’t matter … they are all caused by global warming and any deaths or damages from these storms is directly related to the consumption of fossil fuels, particularly that obscene consumption in the United States. Of course, they always insist that the debate on any of these subjects is over, and it is now time for action. Even U.N. Secretary-General Ban Ki-moon told the conference participants, “The economic crisis is serious; yet when it comes to climate change, the stakes are far higher…The climate crisis affects our potential prosperity and our people’s lives, both now and far into the future…we must recommit ourselves to the urgency of our cause.” Damn the torpedoes, full speed ahead!

Well, before you get carried away and win a Nobel Peace Prize, be alert that we have covered this nonsense many times in the past at World Climate Report, and the scientific literature on the subject continues to provide a stream of evidence countering the claims of the global warming advocates. As we have seen many times before, the claims of increasing storm intensity or frequency are generally inconsistent with the conclusions of the United Nations Intergovernmental Panel on Climate Change (IPCC) and certainly at odds with dozens of articles published each year in the professional scientific literature.

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November 21, 2008

Hurricane History Lessons

Filed under: Climate Extremes, Hurricanes

Here we go again – hurricane season has come to an end and yet another year has failed to produce the widespread pain and suffering that can reinforce the claim that the buildup of greenhouse gases is the root cause of all the damage. We have covered this topic dozens of times in the past, but the literature on the subject never seems to stop oozing right through the distortion of the greenhouse crusaders. We get tired of writing about this subject over and over and we suspect you see this as another in a very long line of essays on the topic…we feel each other’s pain. The hurricane story should have been destroyed a decade ago, but for whatever reason, the global warmers continue to insist that hurricanes are increasing in frequency, intensity, and/or duration and the blame should sit squarely on carbon dioxide emissions from the United States. If you want more on the subject, visit literally FIVE million websites on the subject!

One of many recent articles on this subject was produced by a pair of prolific scientists with the Department of Atmospheric Science at Colorado State University who “acknowledge funding provided by NSF Grant ATM-0346895 and by the Research Foundation of Lexington Insurance Company (a member of the American International Group).” Sounds like “Big Insurance” is involved here, so be aware! Of course, never mind that these guys also secured research dollars from the incredibly competitive National Science Foundation.

Klotzbach and Gray begin by noting “There has been a considerable increase in Atlantic basin tropical cyclone (TC) activity since 1995. Also, the very active seasons of 2004 and 2005 produced record amounts of damage in the United States. This increase in both Atlantic basin activity as a whole as well as U.S. landfalling activity had been anticipated by as early as the late 1980s. Considerable debate has ensued over the past few years as to the causes of this increase.” Once again, we wonder how a major professional scientific outlet like the Journal of Climate can allow anyone to suggest “Considerable debate” continues on anything related to global warming – isn’t the debate over?

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