Is the airborne fraction of anthropogenic CO 2 emissions increasing?

Wolfgang Knorr Received 18 August 2009; revised 21 September 2009; accepted 23 September 2009; published 7 November 2009. [ 1 ] Several recent studies have highlighted the possibility that the oceans and terrestrial ecosystems have started loosing part of their ability to sequester a large proportion of the anthropogenic CO2 emissions. This is an important claim, because so far only about 40% of those emissions have stayed in the atmosphere, which has prevented additional climate change. This study re-examines the available atmospheric CO2 and emissions data including their uncertainties. It is shown that with those uncertainties, the trend in the …

Global CO2 emissions from cement production

Robbie M. Andrew CICERO Center for International Climate Research, Oslo 0349, Norway Correspondence:Robbie M. Andrew (robbie.andrew@cicero.oslo.no) Published: 26 January 2018 Abstract.The global production of cement has grown very rapidly in recent years, and after fossil fuels andland-use change, it is the third-largest source of anthropogenic emissions of carbon dioxide. The required data for estimating emissions from global cement production are poor, and it has been recognised that some global estimates are significantly inflated. Here we assemble a large variety of available datasets and prioritise official data and emission factors, including estimates submitted to the UNFCCC plus new estimates for China …

NO EXPERIMENTAL EVIDENCE FOR THE SIGNIFICANT ANTHROPOGENIC CLIMATE CHANGE

A new study by researchers at Turku University in Finland found that the human contribution to a rise of 0.1°C in global temperatures over the last century is just 0.01°C. The paper, titled ‘No experimental evidence for the significant anthropogenic climate change’ was published by Jyrki Kauppinen and Pekka Malmi. The study found that, “During the last hundred years the temperature is increased about 0.1°C because of carbon dioxide. The human contribution was about 0.01°C.” Kauppinen and Malmi conclude that global temperatures are controlled primarily by cloud cover and that “only a small part” of the increased carbon dioxide concentration …

Human CO2 Emissions Have Little Effect on Atmospheric CO2

edberry.com Abstract The United Nations Intergovernmental Panel on Climate Change (IPCC) agrees human CO2 is only 5 percent and natural CO2 is 95 percent of the CO2 inflow into the atmosphere. The ratio of human to natural CO2 in the atmosphere must equal the ratio of the inflows. Yet IPCC claims human CO2 has caused all the rise in atmospheric CO2 above 280 ppm, which is now 130 ppm or 32 percent of today’s atmospheric CO2. To cause the human 5 percent to become 32 percent in the atmosphere, the IPCC model treats human and natural CO2 differently, which is …

RESPONSIVENESS OF ATMOSPHERIC CO2 TO FOSSIL FUEL EMISSIONS: UPDATED

JAMAL MUNSHI Date: July 2017, Revised 7/7/2017 ABSTRACT: The IPCC carbon budget concludes that changes in atmospheric CO2 are driven by fossil fuel emissions on a year by year basis. A testable implication of the validity of this carbon budget is that changes in atmospheric CO2 should be correlated with fossil fuel emissions at an annual time scale net of long term trends. A test of this relationship with insitu CO2 data from Mauna Loa 1958­2016 and flask CO2 data from twenty three stations around the world 1967­2015 is presented. The test fails to show that annual changes in atmospheric …

On the incident solar radiation in CMIP5 models

AGU100 Linjiong Zhou, Minghua Zhang, Qing Bao, Yimin Liu First published: 05 March 2015 https://doi.org/10.1002/2015GL063239 Abstract Annual incident solar radiation at the top of atmosphere should be independent of longitudes. However, in many Coupled Model Intercomparison Project phase 5 (CMIP5) models, we find that the incident radiation exhibited zonal oscillations, with up to 30 W/m2 of spurious variations. This feature can affect the interpretation of regional climate and diurnal variation of CMIP5 results. This oscillation is also found in the Community Earth System Model. We show that this feature is caused by temporal sampling errors in the calculation of the solar …

50 YEARS OF CONTINUOUS MEASUREMENT OF CO2 ON MAUNA LOA

by Ernst-Georg Beck, Dipl.Biol. Reprinted from ENERGY & ENVIRONMENT, VOLUME 19 No. 7 2008 Abb. 1: The Keeling Curve, above on the left: Roger Revelle, Gustav Arrhenius and Charles Keeling. On the right the Mauna Loa Observatory at the elevation of 3397 m in an aerial view of the volcano Mauna Loa [1, 2, 3, and 4]. Download PDF This browser does not support PDFs. Please download the PDF to view it..

180 YEARS OF ATMOSPHERIC CO2 GAS ANALYSIS BY CHEMICAL METHODS

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 …

Climate Change Reconsidered II : Fossil Fuels

Summary for Policymakers NIPCC Oct. 3, 2018 Introduction Climate Change Reconsidered II: Fossil Fuels, produced by the Nongovernmental International Panel on Climate Change (NIPCC), assesses the costs and benefits of the use of fossil fuels 1 by reviewing scientific and economic literature on organic chemistry, climate science, public health, economic history, human security, and theoretical studies based on integrated assessment models (IAMs) and cost-benefit analysis (CBA). It is the fifth volume in the Climate Change Reconsidered series and, like the preceding volumes, it focuses on research overlooked or ignored by the United Nations’ Intergovernmental Panel on Climate Change (IPCC) (see …

RESPONSIVENESS OF ATMOSPHERIC CO2 TO ANTHROPOGENIC EMISSIONS: A NOTE

JAMAL MUNSHI ABSTRACT: A statistically significant correlation between annual anthropogenic CO2 emissions and the annual rate of accumulation of CO2 in the atmosphere over a 53-year sample period from 1959-2011 is likely to be spurious because it vanishes when the two series are detrended. The results do not indicate a measurable year to year effect of annual anthropogenic emissions on the annual rate of CO2 accumulation in the atmosphere.