Al Bredenberg

NASA's James Hansen: Data Proves Global Warming is Causing Crazy Weather

by , 08/07/12

climate change, global warming, James Hansen, NASA, weather, extreme weather, research, study

James E. Hansen, head of the NASA Goddard Institute for Space Studies, declared Aug. 3 that a new study by him and colleagues Makiko Sato and Reto Ruedy proves global warming is causing the extreme weather dominating the news in recent years. The study was published today online in the Proceedings of the National Academy of Sciences (NAS). Hansen asserts in an op-ed for The Washington Post, that “for the extreme hot weather of the recent past, there is virtually no explanation other than climate change.”

climate change, global warming, James Hansen, NASA, weather, extreme weather, research, study

Hansen is famous for his 1988 congressional testimony declaring that human-caused global warming had begun. That testimony, along with Hansen’s projections that greenhouse gases (GHGs) would cause further temperature increases, helped propel climate change into public consciousness and policy debate. Hansen now says his projections about increasing temperatures “have been proved true” but that, in fact, he “failed to fully explore how quickly that average rise would drive an increase in extreme weather.”

It’s been common up to now for climate scientists to state that rising temperatures “load the dice” or change the odds so that extreme weather is more likely. For example, a July study from the National Oceanic and Atmospheric Agency (NOAA) found that “Cold Decembers are half as likely to occur now versus fifty years ago, whereas warm Novembers are now 62 times more likely.”

But the new study goes further than that. The researchers charted the world’s changing temperatures over the past 30 years and found that “the extremes of unusually cool and, even more, the extremes of unusually hot are being altered so they are becoming both more common and more severe,” Hansen writes. Extreme-heat events, Hansen says, “used to be exceedingly rare.” But the study identifies a new category of events that it calls “summertime extremely hot outliers.” The researchers write that “This hot extreme, which covered much less than 1 percent of Earth’s surface during the base period [1951-1980], now typically covers about 10 percent of the land area.”

Climate scientists are usually hesitant to connect any one weather event with climate change. But the new study gets more direct, stating that:

It follows that we can state, with a high degree of confidence, that extreme anomalies such as those in Texas and Oklahoma in 2011 and Moscow in 2010 were a consequence of global warming because their likelihood in the absence of global warming was exceedingly small.

In his essay Hansen says that new analysis shows that such events “will become even more frequent and more severe.” Hansen, who is not just a scientist but also an environmental activist, believes the climate change problem can be fought by imposing “a gradually rising fee on carbon collected from fossil-fuel companies, with 100 percent of the money rebated to all legal residents on a per capita basis.” Such a measure would “stimulate innovations and create a robust clean-energy economy.”

+ Perception of Climate Change Study

Via The Washington Post

Chart credit: NASA

Photo credit: tarsandsaction, CC BY 2.0

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6 Comments

  1. rnbram January 12, 2013 at 12:09 pm

    Right. A man who is well known to be part of a group who use data selectivity to ‘prove’ their a priori conclusions, is to be believed? For the last 600 million years or more, the Earth has been 3 to 5 degrees C warmer than today, and has had as much as 10x present atmospheric CO2 levels. A return to those conditions is a return to periods when life on earth was richest. It would also enhance agriculture, feeding billions more readily. Yet, here the Green and AGW crowd oppose that life affirming boon.

    Of course, as Leftist politics & economic mismanagement (supported by most Environmentalists) becomes increasingly common, no amount of agricultural improvement will prevent people from going to bed hungry. The Leftists and the Environmentalists will continue to blame overpopulation and economic freedom, despite the fact that economic freedom ALWAYS leads to more food, better health and longer life spans in every demographic group.

  2. William Branham January 12, 2013 at 7:49 am

    Hansen is famous for his 1988 congressional testimony declaring that human-caused global warming had begun. That testimony, along with Hansen’s projections that greenhouse gases (GHGs) would cause further temperature increases, helped propel climate change into public consciousness and policy debate. Hansen now says his projections about increasing temperatures “have been proved true” but that, in fact, he “failed to fully explore how quickly that average rise would drive an increase in extreme weather.”

    Read more: NASA’s James Hansen: Data Proves Global Warming is Causing Crazy Weather | Inhabitat – Sustainable Design Innovation, Eco Architecture, Green Building

  3. rnbram August 9, 2012 at 6:44 pm

    Hansen: “. . . for the extreme hot weather of the recent past, there is virtually no explanation other than climate change.”

    And, whilst its raining, “there is virtually no explanation other than cooling air and water condensation”!

    Hansen’s meaningless-statement-that-sounds-scary, relies on the reader to insert “man-made” before “climate”. But has no evidence to support that claim. Worse, Hansen has ignored the fact that
    1. we are experiencing a peak in the 11 year solar output cycle,
    2. Earth is presently in one of the three coolest periods it has had in 600 million years, and
    3. Earth is at one of its lowest ever levels of atm-CO2 in 600 million years (which also shows temperature changing quite independently of atm-CO2 levels).

    Hansen of NASA has long been exposed as a charlatan, as has Phil Jones of Arcadia U. and Michael Mann of Penn State U. All three have fudged numbers, thrown out data or ignored plain facts that did not fit their agenda, and promoted glaring falsehoods for the publicity, political pull and funding it brought them. They should have been fired decades ago.

  4. rnbram August 9, 2012 at 4:06 pm

    Paul Erlich made the same basic over-population predictions as G. Kaplan above, for 1980 and then again for (was it?) 2005. Kaplan is just as wrong as Erlich. Both should read a little more Julian Simon and a lot less Green scaremongering.

  5. rnbram August 9, 2012 at 4:02 pm

    Hmmm, why doesn’t he mention that
    1. solar output is approaching a peak in its 11 year cycle
    2. over the last ~10,000 years the earth as been 3 to 5 deg C cooler than all but two other occasions in 600 million years, so warming should be expected,
    3. over the last ~10,000 yrs atm-CO2 levels have only been this low once before in 600 million years, and that temperature moves quite independently of atm-CO2

    The planet’s atmosphere needs a quadrupling of CO2, which would dramatically increase plant growth, improve agriculture (feed the poor) and NOT cause catastrophes. If a global warming of four or five degrees also occurred, it would end the present cycle that is tending towards a glacier age.

    Hansen is a dishonest scientist, and should be ignored. As if the U of Arcadia emails with Phil Jones and Michael Mann (Penn State U)were not enough to have all three men dismissed, to be ignored in disgrace.

  6. g kaplan August 8, 2012 at 3:55 am

    IF THIS BRINGS US TO OUR KNEES NOW, WHAT WILL IT BE LIKE IN 20 YEARS??
    TODAY, I OUT OF EVERY 4 CHILDREN IN THE USA GOES TO BED HUNGRY EVERY DAY!

    IT IS BECAUSE OF EXCESS POPULATION, STUPID!

    in 1800 the USA had 23 million people, now 311 million
    in 1800 the World had 1 billion people, now 7 billion
    Each time we consume natural resources, we destroy the environment, pollute
    and expel CO2. It is that simple.

    TODAY, 3 new people are born for each one that dies, watch this:
    http://www.worldometers.info/world-population/

    However, this is unsustainable, as the planet’s ability to provide for us has reached its tipping point.

    Chief Scientist for the UK warns, that in ABOUT 20 years, we face a PERFECT STORM : PROF. Beddington VIDEO

    http://news.bbc.co.uk/2/hi/science/nature/7952348.stm

    G Kaplan, MD, President
    http://www.lifewatchgroup.org/

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