Tag Archives: Northern Hemisphere

The Dr. David Viner moment we’ve all been waiting for…a new snow record

WUWT readers surely recall this most often quoted prediction about snow. From the Independent’s most cited article: Snowfalls are now just a thing of the past by Charles Onians: However, the warming is so far manifesting itself more in winters … Continue reading

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Posted in records, snowfall, Weather | Tagged , , , , , | 248 Comments

Yet another paper demonstrates warmer temperatures 1000 years ago and even 2000 years ago.

Yesterday I highlighted the paper The extra-tropical Northern Hemisphere temperature in the last two millennia: reconstructions of low-frequency variability, by B Christiansen of the Danish Meteorological Institute and F C Ljungqvist of Stockholm University which showed that using a multitude … Continue reading

Posted in Paleoclimatology | Tagged , , , , , | 182 Comments

New paper confirms the climate was warmer 1000 years ago

Mike Mann will have a twitfest on Twitter trying to knock this one down. Data from 91 Northern Hemisphere proxies was used to reconstruct temperature. See reconstruction graph (figure 5) below. Via The GWPF: A new paper, looking back at … Continue reading

Posted in Michael E. Mann, Paleoclimatology | Tagged , , , , , | 85 Comments

New study finds that a Carrington class solar event could cause global cooling of more than 3C

A paper recently published in Atmospheric Chemistry and Physics finds that “a solar proton event, if it took place in the near future with an intensity similar to that ascribed to the Carrington Event of 1859″. Based on the results … Continue reading

Posted in Solar, solar flare, Spaceweather | Tagged , , , , , , | 132 Comments

Little Ice Age Thermometers- Historic variations in temperatures Part 3 -BEST confirms extended period of warming.

Guest post by Tony Brown This short paper is a preliminary examination of BEST data to 1753, as compared to the Central England Temperature Record (CET) to 1660 (instrumental record) and 1538 (Extended by Tony Brown using thousands of contemporary … Continue reading

Posted in Berkeley Earth Surface Temperature, Climate data, UHI | Tagged , , , , , , | 68 Comments

NASA’s James Hansen’s big cherry pick

From NASA:  Research Links Extreme Summer Heat Events to Global Warming A new statistical analysis by NASA scientists has found that Earth’s land areas have become much more likely to experience an extreme summer heat wave than they were in … Continue reading

Posted in extreme weather, James Hansen | Tagged , , , , , , | 189 Comments

Sea Ice News – Volume 3 Number 8 – meltwater hues, or blues?

WUWT commenter Caleb writes on 2012/07/20 at 7:53 am Check out the “North Pole Camera” on the WUWT “Sea Ice Page.” Both Camera #1 and Camera #2 show lovely summer weather, and patches of melt-water atop the ice. One problem … Continue reading

Posted in Sea Ice News | Tagged , , , , , | 61 Comments

Why the U.S East Coast heatwave was not unusual nor the number of record temperatures unprecedented.

This is a combination of two posts elsewhere that illustrate just how much hype and how little substance the MSM and blogs like Grist, Climate Progress. and Capital Weather Gang have been pushing trying to make a run of the … Continue reading

Posted in records, Weather, Weather_stations | Tagged , , , , , , | 92 Comments

‘We don’t believe the ice cores can be interpreted purely as a signal of temperature’

From the University of Wisconsin: Greenland ice may exaggerate magnitude of 13,000-year-old deep freeze by Chris Barncard Ice samples pulled from nearly a mile below the surface of Greenland glaciers have long served as a historical thermometer, adding temperature data … Continue reading

Posted in Greenland ice sheet, Paleoclimatology | Tagged , , , , , , , | 43 Comments

Natural Variability in the Widths of the Tropics

Guest Post by Willis Eschenbach In my previous post, “Does This Analysis Make My Tropics Look Big?“I discussed a paper called “Recent Northern Hemisphere tropical expansion primarily driven by black carbon and tropospheric ozone”, by Robert Allen et al, hereinafter … Continue reading

Posted in Tropics | Tagged , , , , , , , , , , , , | 93 Comments

The CIA documents the global cooling research of the 1970’s

Despite what NCDC’s Thomas Peterson, Wikiwrangler William Connolley, and John Fleck would like you to believe as a “myth” (The Myth of the 1970s Global Cooling Scientific Consensus), there was in fact serious consideration of the global cooling issue in … Continue reading

Posted in Global cooling | Tagged , , , , , | 96 Comments

California Air Resources Board to make webcast on ‘black carbon and other “short-lived” greenhouse gases. ‘

Short notice – this is on NOW. Worth watching, even if only for how they justify saying ‘black carbon and other “short-lived” greenhouse gases.’. I didn’t know black carbon was a gas. Here’s the release: On Thursday, May 24, at … Continue reading

Posted in Uncategorized | Tagged , , , , , , , | 38 Comments

Sea Ice News Volume 3 Number 5 – SEARCH Sea Ice Outlook forecasting contest for 2012

The Arctic sea ice extent forecasting contest is on again.  As before I’ll allow readers to submit their best estimates in a poll, and I’ll submit those results as we’ve done in the past two years. Last year, the forecast … Continue reading

Posted in Arctic, Sea Ice News | Tagged , , , , , , , | 56 Comments

Does This Analysis Make My Tropics Look Big?

Guest Post by Willis Eschenbach There is a new paper in Nature magazine that claims that the tropics are expanding. This would be worrisome because it could push the dry zones further north and south, moving the Saharan aridity into … Continue reading

Posted in Tropics | Tagged , , , , , , , , , , | 84 Comments

Carbon soot may be driving the expansion of the tropics – not CO2

From the University of California – Riverside it seems that black carbon soot is driving tropical expansion. How could this be? I thought CO2 was all powerful, so powerful with the strength of 400,000 Hiroshima bombs each day that animals … Continue reading

Posted in Aerosols, Carbon soot | Tagged , , , , , , , , | 74 Comments

Shakun The Last, I Hope

Guest Post by Willis Eschenbach In three previous posts here, here, and here, I discussed problems with the paper by Shakun et al., “Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation” (PDF,hereinafter S2012) Commenters said, and … Continue reading

Posted in Paleoclimatology, Proxies | Tagged , , , , , , , , | 84 Comments

Does CO2 correlate with temperature history? – A look at multiple timescales in the context of the Shakun et al. paper

Guest post by Michael Pacnik Especially in the context of recent discussion of the Shakun et al. paper, a look at other sources for temperature history versus CO2 can be helpful, examining timescales ranging from the past century to the … Continue reading

Posted in Carbon dioxide, Paleoclimatology | Tagged , , , , , , , | 144 Comments

March 2012 Sea Surface Temperature (SST) Anomaly Update – A New Look

Guest post by Bob Tisdale THE ADDITION OF CMIP3 (IPCC AR4) HINDCASTS/PROJECTIONS TO GRAPHS I’ve added a new feature to the graphs of the monthly sea surface temperature updates on a trial basis, and it is the multi-model mean of … Continue reading

Posted in Sea Surface Temperature | Tagged , , , , , , , | 49 Comments

Spencer shows compelling evidence of UHI in CRUTem3 data

McKitrick & Michaels Were Right: More Evidence of Spurious Warming in the IPCC Surface Temperature Dataset Guest post by Roy W. Spencer, Ph. D. The supposed gold standard in surface temperature data is that produced by Univ. of East Anglia, … Continue reading

Posted in Uncategorized | Tagged , , , , , , , | 193 Comments

Weekly Climate and Energy News Roundup

Quote of the Week: “I am always happy to be in the minority.  Concerning the climate models, I know enough of the details to be sure that they are unreliable. They are full of fudge factors that are fitted to … Continue reading

Posted in Climate News Roundup | Tagged , , , , , , , | 34 Comments