Climate change is one of the most serious problems facing the world today. The recent Intergovernmental Panel on Climate Change reports confirmed that climate change will have a significant impact on global surface temperature. The projections of IPCC are that the rise of the mean temperature will be as high as 6.4oC by 2100, while the concentration of CO2 will be 1.3 times higher than it was 2...

We present recent observed climate trends for carbon dioxide concentration, global mean air temperature, and global sea level, and we compare these trends to previous model projections as summarized in the 2001 assessment report of the Intergovernmental Panel on Climate Change (IPCC). The IPCC scenarios and projections start in the year 1990, which is also the base year of the Kyoto protocol, i...

0. Executive Summary • The IPCC was created on the assumption that manmade warming was a problem and was given the narrow focus of investigating it rather than all causes of climate change. • The key finding of AR5 has no supporting basis because temperatures have not risen as models predicted • The IPCC's expressions of uncertainty are misleading • AR5 does not seriously discuss other hypothes...

Mountain regions worldwide are affected by climate change. Indeed, mountains represent unique areas for the detection of climate change and the assessment of climate-related impacts (Beniston 2003; Messerli & Ives 1997). The Intergovernmental Panel on Climate Change (IPCC) has predicted dramatic impacts on mountain ecosystems as a result of climate change. Changing climates will potentially alt...

This paper briefly outlines the basic science on climate change, as well as the IPCC assessments on emissions scenarios and climate impacts, to provide a context for the topic of key vulnerabilities to climate change. A conceptual overview of “dangerous” climate change issues and the roles of scientists and policy makers in this complex scientific and policy arena are suggested, based on litera...

The IPCC suggests a “likely range” for the equilibrium climate sensitivity of atmospheric carbon dioxide. At the recommended upper limit of this likely range, the calculated temperature rise (using the quasi-steady approximation) is found to be substantially higher than the observed historical data. Theoretically, the quasi-steady response is indeed expected to be higher than the actual (time d...

All these gases are addressed by the Revised 1996 IPCC Guidelines for National Greenhouse Gas Inventories (IPCC Guidelines). The technical approach in estimating CO2 emissions is relatively simple and the accuracy level high since the CO2 emission factors are mainly a function of the fuel properties, which are generally well addressed by most countries. The non-CO2 emissions however are closely...

In August 2021, while the world was grappling with release of IPCC WGI report, a group activist scientists called Scientist Rebellion leaked parts Working Group III contribution to Sixth Assessment Report (AR6) prior intergovernmental approval. Although are not first leak an they most vocal leaker particular political agenda: generate disruptive climate action by curtailing carefully orchestrat...