Senator Barbara Boxer's own experts contradict Obama global warming science denial at Thursday Senate committee hearing

7/19/13, "Senator Barbara Boxer's Own Experts Contradict Obama On Global Warming," Forbes, James Taylor

"Expert witnesses called by Sen. Barbara Boxer to testify during Senate Environment and Public Works hearings yesterday contradicted a key assertion made by President Barack Obama on climate change.

Speaking at a Democratic fundraiser less than a month before directing the U.S. Environmental Protection Agency to impose costly new restrictions on carbon dioxide emissions, Obama said, “we also know that the climate is warming faster than anybody anticipated five or 10 years ago.”

“I don’t have much patience for people who deny climate change,” Obama added.

However, climate scientists including United Nations Intergovernmental Panel on Climate Change (IPCC) lead author Hans von Storch report temperatures have remained essentially flat for the past 10 years, and indeed for the past 15 years.  Storch told Der Spiegel that 98 percent of IPCC climate models cannot replicate the prolonged pause in global warming, and IPCC may need to revise its computer models to correct their apparent warming bias.

During yesterday’s Environment and Public Works hearings, Sen. David Vitter asked a panel of experts, including experts selected by Boxer, “Can any witnesses say they agree with Obama’s statement that warming has accelerated during the past 10 years?” 

For several seconds, nobody said a word. Sitting just a few rows behind the expert witnesses, I thought I might have heard a few crickets chirping, but I couldn’t tell for sure. We’ll give Obama the benefit of the doubt and count the crickets in the “maybe” camp.

After several seconds of deafening silence, global warming activist Heidi Cullen, who formerly served as a meteorologist for the Weather Channel, attempted to change the subject. Cullen said our focus should be on longer time periods rather than the 10-year period mentioned by Obama. When pressed, however, she contradicted Obama’s central assertion and said warming has slowed, not accelerated.

Several minutes later, Sen. Jeff Sessions returned to the topic and sought additional clarity. Sessions recited Obama’s quote claiming accelerating global warming during the past 10 years and asked, “Do any of you support that quote?”

Again, a prolonged and deafening silence ensued. Neither Cullen nor any of the other experts on the panel spoke a word, not even in an attempt to change the subject.

Boxer may have envisioned her high-profile global warming hearings as an opportunity to build momentum for congressional or EPA action to restrict carbon dioxide emissions. Instead, the very global warming activists she called to serve as expert witnesses delivered a crushing blow to President Obama’s central justification for expensive new restrictions on carbon dioxide emissions." via Lucianne

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Ed. note: Citations below (following ice melt study) for 15+ years of no warming for those who view 10 years as insufficient.

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Further problems with Obama global warming claims: Peer reviewed study in Nature Geoscience finds lack of evidence to attribute human CO2 to future ice melting, 2003-2012 study. Scientists say Greenland would require minimum of 20 years of satellite monitoring to begin to make such a claim: 
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7/14/13, "Limits in detecting acceleration of ice sheet mass loss due to climate variability," Nature Geoscience

"The Greenland and Antarctic ice sheets have been reported to be losing mass at accelerating rates^{1, 2}. If sustained, this accelerating mass loss will result in a global mean sea-level rise by the year 2100 that is approximately 43 cm greater than if a linear trend is assumed². However, at present there is no scientific consensus on whether these reported accelerations result from variability inherent to the ice-sheet–climate system, or reflect long-term changes and thus permit extrapolation to the future³. 

Here we compare mass loss trends and accelerations in satellite data collected between January 2003 and September 2012 from the Gravity Recovery and Climate Experiment to long-term mass balance time series from a regional surface mass balance model forced by re-analysis data. We find that the record length of spaceborne gravity observations is too short at present to meaningfully separate long-term accelerations from short-term ice sheet variability. We also find that the detection threshold of mass loss acceleration depends on record length: to detect an acceleration at an accuracy within ±10 Gt yr⁻², a period of 10 years or more of observations is required for Antarctica and about 20 years for Greenland. Therefore, climate variability adds uncertainty to extrapolations of future mass loss and sea-level rise, underscoring the need for continuous long-term satellite monitoring."

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2007 UN IPCC report says no long term acceleration of sea level has been determined using 20th century data alone:

"IPCC Fourth Assessment Report: Climate Change 2007," "Climate Change 2007: Working Group I: The Physical Science Basis, 5.5.2.4 Interannual and Decadal Variability and Long-Term Changes in Sea Level:"

parag. 3, "Interannual or longer variability is a major reason why no long-term acceleration of sea level has been identified using 20th-century data alone (Woodworth, 1990; Douglas, 1992). Another possibility is that the sparse tide gauge network may have been inadequate to detect it if present (Gregory et al., 2001). The longest records available from Europe and North America contain accelerations of the order of 0.4 mm yr^–1 per century between the 19th and 20th century (Ekman, 1988; Woodworth et al., 1999). For the reconstruction shown in Figure 5.13, Church and White (2006) found an acceleration of 1.3 ± 0.5 mm yr^–1 per century over the period 1870 to 2000. These data support an inference that the onset of acceleration occurred during the 19th century (see Section 9.5.2)."... 


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UK Guardian reports scientists find lack of certainty about 21st century ice melting:

7/15/13, "Polar ice loss cause still unclear," UK Guardian, Tim Radford

"New research shows that glaciologists still cannot say for certain whether the Earth's north and south polar ice is melting faster."

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Another press report on Nature Geoscience sea level study. Notes tide gauges show 20th century sea level rise only 2mm/yr.:
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7/15/13, "'There is no scientific consensus' on sea-level rise, say scientists," UK Register, Lewis Page. "Just don't have enough data to say what'll happen."

"There isn't enough data to say with any certainty what will happen to sea levels around the world this century, and there is no "scientific consensus" to suggest that the rate of the seas' rise will accelerate dangerously.

That's according to a group of eminent specialists based in Germany, the Netherlands and the UK. Writing in hefty boffinry journal Nature Geoscience this week, the assembled experts have this to say:

The Greenland and Antarctic ice sheets have been reported to be losing mass at accelerating rates ... However, at present there is no scientific consensus on whether these reported accelerations result from variability inherent to the ice-sheet–climate system, or reflect long-term changes ...

[Our emphasis.]

The Greenland and Antarctic ice sheets are very important factors in forecasting the rate at which the seas might rise in the coming century, which is perhaps the primary reason to be concerned about global warming and associated climate changes.

During the 20th century, sea levels as measured by tide gauges rose about 17cm, just short of 2mm a year. The most recent report of the Intergovernmental Panel on Climate Change said that "no long-term acceleration of sea level has been identified using 20th-century data alone", but the organisation nonetheless forecast rises in the 21st century of 26-59cm as many scientists think that the rate of rise will increase seriously due to global warming."...  
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If 10 years isn't enough, UN IPCC says 17 years of no warming. UK Met Office says 15 years of no warming:

1. UN IPCC, 2/21/13, “IPCC Head Pachauri Acknowledges Global Warming Standstill,” The Australian, Graham Lloyd,

"The UN’s climate change chief, Rajendra Pachauri, has acknowledged a 17-year pause in global temperature rises, confirmed recently by Britain’s Met Office."...

2. UK Met Office 1/18/13, "The British Met Office forecast even more recently that the temperature interval could continue at a high level until the end of 2017 - despite the rapidly increasing emissions of greenhouse gases . Then global warming would pause 20 years."..."The exact reasons of the temperature standstill since 1998, are not yet understood, says climate researcher Doug Smith of the Met Office."...1/18/13, “Climate change: scientists puzzle over halt in global warming,” Der Spiegel, by Axel Bojanowski (translation from German)

Der Spiegel chart from UK Met Office  



 
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134 scientists write to UN Sec. Gen. reminding him of 15 years of no warming:

11/29/12, 134 scientists write to UN Sec. Gen. Ban Ki-Moon, asking him to desist from blaming climate disasters on global warming that hasn't happened: 

"Global warming that has not occurred cannot have caused the extreme weather of the past few years."...“The NOAA “State of the Climate in 2008” report asserted that 15 years or more without any statistically-significant warming would indicate a discrepancy between observation and prediction. Sixteen years without warming have therefore now proven that the models are wrong by their creators’ own criterion.”…(2nd parag. fr. end of letter). 

“Global warming that has not occurred cannot have caused the extreme weather of the past few years.”…"Policy actions that aim to reduce CO2 emissions are unlikely to influence future climate. Policies need to focus on preparation for, and adaptation to, all dangerous climatic events, however caused."...Special to Financial Post, 12/10/12

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30 year peer reviewed study finds CO2 doesn't cause warming. CO2 lags global air and water temperatures:

Jan. 2013, “The phase relation between atmospheric carbon dioxide and global temperature,“ Global and Planetary Change, Ole Humlum^{a, b, ,} ,Kjell Stordahl^c, Jan-Erik Solheim^d

“Fig. 1. Monthly global atmospheric CO₂“

"In our analysis we use eight well-known datasets:  

1) globally averaged well-mixed marine boundary layer CO₂ data,
2) HadCRUT3 surface air temperature data,
3) GISS surface air temperature data,
4) NCDC surface air temperature data,
5) HadSST2 sea surface data,
6) UAH lower troposphere temperature data series,
7) CDIAC data on release of anthropogene CO₂, and
8) GWP data on volcanic eruptions....
Changes in CO₂ always lagging changes in temperature. The maximum positive correlation between CO₂ and temperature is found for CO₂ lagging."...

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NOAA study says US 2012 weather extremes not caused by global warming, were natural events:
 
4/12/13, “Study Reveals Global Warming Not To Blame For Last Year’s Crippling Drought,” stlouis.cbslocal.com with AP
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“A new federal study reveals that global warming is not to blame for last year’s extreme drought that crippled the central Great Plains. The study conducted by the National Oceanic and Atmospheric Drought Task Force places the blame on natural variations.“…  
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5/28/13, Peer reviewed NASA study says Superstorm Sandy not due to man-caused global warming or climate change:

5/28/13, "On the impact angle of Hurricane Sandy's New Jersey landfall," Geophysical Research Letters, Hall and Sobel

"Hall and Sobel report their findings in a paper published last week (29 May 2013) in Geophysical Research Letters, a journal of the American Geophysical Union."...

=====Following are two reports noting the above finding:

6/3/13, "Hurricane Sandy took highly unusual path, but climate change doesn’t get the blame – yet," blogs.AGU.org, by Sarah Charley

7/12/13, "Hurricane Sandy Was 1-in-700-Year Event," LiveScience.com, Elizabeth Howell

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6/10/13, CO2 emissions chart from IEA report, p. 2   

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Extra point: If you get your news only from broadcast television networks, you'll never know that global warming has "paused" for at least 15 years:

7/11/13, "Networks Do 92 Climate Change Stories; Fail to Mention 'Lull' in Warming All 92 Times, ABC, CBS and NBC ignore 'mystery' warming plateau in favor of alarmism about sea levels, allergies, weather." Wall St. Journal, Julia A. Seymour

"Just since Jan. 1, 2013, ABC, CBS and NBC morning and evening news programs have aired 92 stories about "climate change" or "global warming." Not a single one of those stories mentioned the "warming plateau" reported even by The New York Times on June 10."...