Claim: Solar activity not a key cause of climate change, study shows

From the University of Edinburgh , another one-paper syndrome in the making funded by an NGO research council with a political mission to grab a headline. And, another poorly written press release where they don’t even cite the name of paper. Sigh. ============================================================ Climate change has not been strongly influenced by variations in heat from…

A link between the solar magnetic field and weather patterns on Earth may explain our lower than normal severe weather in 2013

From the “science is settled” department comes this new paper that points out a correlation between the Interplanetary Magnetic Field (IMF) and polar jet streams, which drive weather events on Earth. This new paper shows that the effects extend even further towards the Equator than before, meaning it will affect weather experienced by a greater…

NSF says biosphere is breathing in CO2 more deeply

Press Release 13-139 Seasonal carbon dioxide range expanding as more is added to Earth’s atmosphere Northern Hemisphere land-based ecosystems “taking deeper breaths,” scientists find Levels of carbon dioxide in the atmosphere rise and fall each year as plants, through photosynthesis and respiration, take up the gas in spring and summer, and release it in fall…

Great News from Greenland

Guest essay by Dr. Patrick J. Michaels I recently returned from a trip to Greenland’s Jokabshavn Glacier, which discharges more ice than any other in the Northern Hemisphere. Our route of flight from Reykjavik traversed the ice cap from about fifty miles north of Angmassalik to the airport at Ilulissat, on Disko Bay, about one-third…

Paper: ‘Summer temperatures were about 10°C warmer than today, even though the concentration of atmospheric CO2 was similar’

From AAAS: From Russia with Lovely Data Climate and the atmospheric concentration of CO2 are closely linked. Brigham-Grette et al. (p. 1421, published online 9 May) present data from Lake El’gygytgyn, in northeast Arctic Russia, that shows how climate varied between 3.6 and 2.2 million years ago, an important interval in the global cooling trend…

Pollution in Northern Hemisphere helped cause 1980s African drought

From the University of Washington: Decades of drought in central Africa reached their worst point in the 1980s, causing Lake Chad, a shallow lake used to water crops in neighboring countries, to almost dry out completely. The shrinking lake and prolonged drought were initially blamed on overgrazing and bad agricultural practices. More recently, Lake Chad…

The curious case of rising CO2 and falling temperatures

Guest essay by Tony Brown Some readers might recall my recent article ‘The Long Slow Thaw?’ In this I reconstructed Central England temperature to 1538 from its current instrumental date of 1659. I was surprised by two notable periods of warmth around 1630 and 1530. I am indebted amongst other material, to Phil Jones excellent…

Temperature change in perspective

Guest post by Ed Hoskins The UK Met Office long term Central England Temperature record[1] has kept a continuous and consistent data set since the 1660s. It appears to be reliable and to have maintained its quality. It has not been adjusted as have so many other official temperature records.Although the CET record covers only…

Future shifts in rainfall

From UC Berkeley: Rising temperature difference between hemispheres could dramatically shift rainfall patterns in tropics By Robert Sanders, Media Relations  BERKELEY — One often ignored consequence of global climate change is that the Northern Hemisphere is becoming warmer than the Southern Hemisphere, which could significantly alter tropical precipitation patterns, according to a new study by…

From UAH – Global Temperature Report: January 2013

Second warmest January in past 35 Global climate trend since Nov. 16, 1978: +0.14 C per decade January temperatures (preliminary) Global composite temp.: +0.51 C (about 0.92 degrees Fahrenheit) above 30-year average for January. Northern Hemisphere: +0.55 C (about 0.99 degrees Fahrenheit) above 30-year average for January. Southern Hemisphere: +0.46 C (about 0.83 degrees Fahrenheit)…

Global Temperature Updates – 2012

By Paul Homewood While Obama is imploring us to stop the global warming that is bringing us “the devastating impact of raging fires, and crippling drought, and more powerful storms”, it would seem to be a good idea to see exactly what global temperatures have been doing in the last year. December Updates First, let’s…

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 of proxy samples in the norther hemisphere, that: “The level of warmth during the peak…

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 observations) This extension to 1538 was a central part of my article ‘The Long Slow…

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 the middle of the 20th century. The research was published today in the journal Proceedings…

‘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 to studies of the local conditions up to the Northern Hemisphere’s climate. But the method…

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 A2012. They use several metrics to measure the width of the tropics—the location of the…

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 the 1970’s thanks to this 1974 document from the CIA. – Anthony The CIA Report…

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 Southern Europe. The paper is called “Recent Northern Hemisphere tropical expansion primarily driven by black…

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 reasonably so, that I had not fully addressed their claim that warming progressed from south…

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, the so-called CRUTem3 dataset. There has always been a lingering suspicion among skeptics that some…

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 the existing climate, so the models more or less agree with the observed data. But…

Snow White Takes a Walk In The Park

Guest Post by Willis Eschenbach I wrote a post called I Used To Be Snow White (… but then I drifted) a week or so ago about a study titled “Impact of Declining Arctic Sea Ice on Winter Snowfall” (PDF) that claimed to link low arctic ice levels with high snow levels. To recap, their specific…

Letter to the editor: Carbon Lies

Letter to the Editor Watts Up With That? 11th March 2012 The Australian government’s plan to sell their un-saleable carbon tax has hit a snag – their pollsters have discovered that the word ”carbon” provokes anger in the electorate. This is no surprise. Most decent people hate liars and the carbon tax campaign has been…

I used to be Snow White

Guest Post by Willis Eschenbach There’s a paper out by, inter alios, our good friend Judith Curry. The paper is “Impact of Declining Arctic Sea Ice on Winter Snowfall”, by Jiping Liu, Judith A. Curry, Huijun Wang, Mirong Song, and Radley M. Horton (PDF, hereinafter L2012). Judith has a thread discussing the paper at her…

Tamino’s Trick

Guest Post by Jeff Condon Tamino has his crowd all whipped up about sea ice.  He has done two posts now declaring how stupid I, Anthony Watts, and by association, all of you, are.   Sorry folks, it was a drive-by incident! For him, I’m not enough of a believer and for others, I’m too…

Increasing Winter Cold in Recent Years and the Arctic

By Joseph D’Aleo, CCM A new study led by the Georgia Institute of Technology attempted to support a relationship reported in recent years (Overland) between melting ice in the Arctic regions and widespread cold outbreaks in the Northern Hemisphere. “We think the recent snowy winters could be caused by the retreating Arctic ice altering atmospheric…

Sea ice decline posited to be driving snowier NH winters

From Georgia Tech, the science press release that gave us the best-warming-headline-evah thanks to media spin, likely started by BBC’s Richard Black. It is worth noting that this study cites data from such a short time from 2009-2011. Surely if any skeptical paper used such a short time period for a climatic conclusion, the paper…