broken20stick201

Run Away! The Anthropocene Has Arrived!!!

Guest post by David Middleton (Featured image borrowed from http://www.hockeyministries.org/rwt-blog-52316)   Unfortunately this article is behind a pay wall. While some of the points in the abstract are reasonable, these two seem to be totally unsupported in any literature of which I am aware… An average global temperature increase of 0.6o to 0.9oC from 1900 to…

Holocene_Temperature_Variations_Rev[1]

The Holocene Thermal Optimum

Guest essay by Andy May The Holocene Thermal Maximum, also called the Holocene Thermal Optimum, occurred at different times in different parts of the world but generally between 10,000 BP and 4,000 BP.  I use BP to indicate years before 2000.   The world ocean was probably 0.7°C warmer than today 8,000 BP. This is remarkable…

A comparison of δ13Ccarb trends and the GICE from Iowa (Ludvigson et al., 2000), Missouri (Metzger and Fike, 2013), Oklahoma (Young et al., 2005), Alabama (this study), West Virginia (Young et al., 2005), and Pennsylvania (Patzkowsky et al., 1997) [note: carbon isotopic trends from Iowa, Missouri, and Alabama are plotted on the same vertical scale while δ13Ccarb trends from Oklahoma, West Virginia, and Pennsylvania are plotted on a different vertical scale]. The Deicke and Millbrig K-bentonite beds are identified in the sections from Iowa (Ludvigson et al., 2000), West Virginia (Sell et al., 2015), and Pennsylvania (Sell et al., 2015) and tentatively identified in the Oklahoma section (Bergström et al., 2010). A map of the eastern United States indicates study locations and lithofacies distribution during deposition of the Deicke and Millbrig K-bentonites (modified from Holmden et al., 1998 and Panchuk et al., 2006). Red dashed lines indicate boundaries between the three aquafacies identified by Holmden et al. (1998). Bulk carbonate δ13Ccarb values for the Midcontinent aquafacies, Taconic aquafacies, and Southern aquafacies range from -2‰ to + 1.5‰, 0‰ to + 3‰, and 0‰ to + 3‰ respectively (Holmden et al., 1998 and Panchuk et al., 2006). (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)

Study: high CO2 levels equated to “warm average temperatures and flourishing life” low CO2, “preceding an ice age and eventual mass extinction”

From the UNIVERSITY OF MISSOURI-COLUMBIA: Paleoclimate researchers find connection between carbon cycles, climate trends Carbon cycling research can help scientists predict global warming and cooling trends COLUMBIA, Mo. – Making predictions about climate variability often means looking to the past to find trends. Now paleoclimate researchers from the University of Missouri have found clues in…

esper-2015-tree-ring-reconstruction

More facts against the Mann – ‘late 20th century warming has not been unique within…the past 750 years ‘

Earlier this week, in Facts against the Mann, we noted how some ice core data cast doubt on Michael E. Mann’s recent claim that:  “overall warmth of the globe and northern hemisphere today is substantially greater than during Medieval time” This was made in the context of an invective filled rebuttal in the Nevada City,…