From the “desperation to find climate change everywhere” department comes this, this, thing… TV coverage of cycling races can help document the effects of climate change BRITISH ECOLOGICAL SOCIETY Analysing…
Search Results for: tree proxy
Mann's tree ring proxy train wreck
Eric Worrall writes: Mann’s thermometer spliced hockey stick has taken even more damage in the last few days, with Steve McIntyre helpfully providing reconstructions based on tree rings which demonstrate…
Oh Mann! Paper demonstrates that tree-ring proxy temperature data is 'seriously compromised'
Michael Mann won’t be happy about this. A new paper now in open review in the journal Climate of the Past suggests that “modern sample bias “has “seriously compromised” tree-ring…
Linking the ENSO and PDO induced rainfall of the Pacific Northwest to proxy data in tree rings and lake sediments
From Penn State , another Mann paper with proxy sets, and a divergence problem. At least they are talking about the MWP, or as they call it, the Medieval Climate…
Tree rings as a proxy for historical ENSO reconstruction
From the University of Hawai’i’s International Pacific Research Center at Mānoa, comes this proxy reconstruction that does some similar things the infamous hockey stick reconstruction, but doesn’t need to pull…
Yamal treering proxy temperature reconstructions don't match local thermometer records
Circling Yamal 3 – facing the thermometers Guest post by Lucy Skywalker Let’s look closely and compare local thermometer records (GISS) with the Twelve Trees, upon whose treerings depend…
Do European tree ring analyses indicate unusual recent hydroclimate?
MBF23 should be corrected and retitled because some key conclusions, including the headline claim in its title, are not supported by proper statistical analysis of the SPEI values that their…
“Courts, customers and Wall Street delivered rebukes to Exxon Mobil, Chevron and Shell”… Oh my!
Guest “it just doesn’t get any dumber than this” by David Middleton ‘Powerful signal’: In a single day, Big Oil suffers historic blows on climateCourts, customers and Wall Street delivered…
ExxonMobil “Cancelled” by The Wall Street Journal… Dumped From DJIA
Guest “WTF?” by David Middleton A couple of days ago Charles forwarded me a reader request for commentary on the recent decision to dump ExxonMobil from the Dow Jones Industrial…
Concord and discord among Northern Hemisphere paleotemperature reconstructions from tree rings
From Science Direct Scott St. George Jan Esper Department of Geography, Environment and Society, University of Minnesota, Minneapolis, USA Department of Geography, Johannes Gutenberg University, Mainz, Germany Received 3 September…
You can always tell a Mann, but you can’t tell him much – why tree ring data (and climatic conclusions from it) sucks
From the “we only select wood for hockey stick construction” department. Steve McIntyre comes back into the fray with a scathing review of just how crappy the tree ring proxies…
McIntyre: ‘a reductio ad absurdum of tree ring chronologies as useful temperature proxies’
Steve McIntyre has a look at the “revised” PAGES2K temperature proxy dataset that includes tree rings and river sediments. He finds the usual ridiculous problems from the past, such as…
Hunger Stones and Tree Ring evidence suggests solar cycle influence on climate
The Solar Cycle is responsible for extreme weather and Climate change According to Tree ring and Hunger Stone events by Francis Tucker Manns Ph.D., P.Geo (Ontario) Artesian Geological Research Abstract Recent discovery of the…
Fatally flawed paper: trees are proxies for the jet stream – and they say ‘now we have more extreme weather’
From the UNIVERSITY OF ARIZONA and the learn Liebigs Law before you make unsupportable claims department, comes this laughable paper that was conceived by the author, Valerie Trouet, at her parents house…
Remember that claim "global warming is causing cherry trees to bloom earlier" ? – Never mind, light pollution is likely the cause
Oh this is funny. I pointed out the other day on Twitter that “Global Warming is the universal boogeyman of the left”. Almost anything that seems slightly out of the…
Briffa embraces tree ring uncertainty in new study, gives 'message to the paleoclimate community'
From the UNIVERSITY OF OTAGO and the “one tree doesn’t work anymore” department: Uncertainties in tree-ring-based climate reconstructions probed Current approaches to reconstructing past climate by using tree-ring data need…
Aproxymations
Guest Post by Willis Eschenbach Over at Bishop Hill, the Bish has an interesting thread about a new proxy reconstruction by Rob Wilson et al. entitled “Last millennium northern hemisphere…
TEX-86 proxy for past ocean temperature reconstructions challenged, possible 21°C error
From the UNIVERSITY OF WASHINGTON Lab experiments question popular measure of ancient ocean temperatures Understanding the planet’s history is crucial if we are to predict its future. While some records…
Palynology: A Proxy Indicator of Climate Used To Make Remarkable Claim
Guest Opinion: Dr. Tim Ball Sometimes people ask how we know what the temperature was thousands of years ago? The answer is we estimate temperature from proxy data or secondary…
A benefit of increased Carbon Dioxide: increased efficiency in tree growth, no "Mike's Nature trick" needed
Gosh, whouda thunk it? There goes Mann’s hockey stick. No wonder he had to truncate all the data after 1960 and splice on the instrumental record. Of course, as I’ve…
New rust based climate proxy even easier for Michael Mann to use upside down
From the Helmholtz Centre for Ocean Research Kiel (GEOMAR) and the upside down Mann-world department: Ferromanganese crusts record past climates Marine scientists reconstruct past variations in Arctic climate In the…
Mann's not so Explosive Findings on Volcanos’ Climate Influence in Tree Rings
Guest essay by Patrick J. Michaels and Paul C. Knappenberger – A new paper overturns old suppositions regarding volcanoes, tree-rings, and climate sensitivity. According to a 2012 press release accompanying…
Neukom's Science By Proxy
Guest Post by Willis Eschenbach Over at Climate Audit, Steve McIntyre is engaged in the slow public defenestration of the latest multi-proxy extravapalooza, a gem of a paper yclept “Inter-hemispheric…
Another proxy study with an 'unprecedented' temperature claim
UPDATE: McIntyre discovers a serious flaw right away, more upside down Mann world – he writes: In keeping with the total and complete stubbornness of the paleoclimate community, they use…
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