All posts in Papers

MDPI climate W. Jackson Davis Received: 8 August 2017 / Revised: 15 September 2017 / Accepted: 22 September 2017 / Published: 29 September 2017 Abstract Assessing human impacts on climate and biodiversity requires an understanding of the relationship between the concentration of carbon dioxide (CO2) in the Earth’s atmosphere and global temperature (T). Here I explore this relationship empirically using comprehensive, recently-compiled databases of stable-isotope proxies from the Phanerozoic Eon (~540 million years before the present) and through complementary modeling using the atmospheric absorption/transmittance code MODTRAN. Atmospheric CO2 concentration is correlated weakly but negatively with linearly-detrended T proxies over the …

by Ernst-Georg Beck Reprinted from ENERGY & ENVIRONMENT VOLUME 18 No. 2 2007 ABSTRACT More than 90,000 accurate chemical analyses of CO2 in air since 1812 are summarised. The historic chemical data reveal that changes in CO2 track changes in temperature, and therefore climate in contrast to the simple, monotonically increasing CO2 trend depicted in the post-1990 literature on climate-change. Since 1812, the CO2 concentration in northern hemispheric air has fluctuated exhibiting three high level maxima around 1825, 1857 and 1942 the latter showing more than 400 ppm. Between 1857 and 1958, the Pettenkofer process was the standard analytical method …

On the Existence of a “Tropical Hot Spot” & The Validity of EPA’s CO2Endangerment Finding Abridged Research Report Second Edition Dr. James P. Wallace III, Dr. John R. Christy, Dr. Joseph S. D’Aleo April 20, 2017 Excerpted summary of this peer-reviewed science: “The analysis results invalidate EPA’s CO2 Endangerment Finding, including the climate models that EPA has claimed can be relied upon for policy analysis purposes. Moreover, these research results clearly demonstrate that once the solar, volcanic and oceanic activity, that is, natural factor,impacts on temperature data are accounted for, there is no “record setting” warming to be concerned about.”

Peter Filzmoser, Karel Hron, Clemens Reimann Received 8 May 2009 Received in revised form 24 July 2009 Accepted 5 August 200 abstract For almost 30 years it has been known that compositional (closed) data have special geometrical properties.In environmental sciences, where the concentration of chemical elements in different sample materials isinvestigated, almost all datasets are compositional. In general, compositional data are parts of a whole whichonly give relative information. Data that sum up to a constant, e.g. 100wt.%, 1,000,000 mg/kg are the bestknown example. It is widely neglected that the “closure” characteristic remains even if only one of all possible …