Implementation of the Sustainable Development Goals (SDG) marks a shift in the priority of the UNDP from tackling poverty to tackling climate change. This shift erodes the ability of the UNDP to perform its primary function of providing development assistance to poor countries. The climate...

Atmospheric CO2 concentrations and surface temperature reconstructions in the study period 1850-2017 are used to estimate observed equilibrium climate sensitivity. Comparison of climate sensitivities in the first and second halves of the study period and a study of climate sensitivities in a...

A Monte Carlo simulation of monthly mean surface temperatures is used to construct a time series of 156 moving decadal temperature trends in a 165-year sample period from 1850 to 2014. We define the current pause in global warming as five consecutive moving decades without a statistically...

The overall structure of changes in total column ozone levels over a 50-year sample period from 1966 to 2015 and across a range of latitudes from -90° to 71° shows that the data from Antarctica prior to 1995 represent a peculiar outlier condition specific to that time and place and not an...

In this short note we argue that an uncertain flow account is balanced as long as the null hypothesis that the balance is zero cannot be rejected. In applying this principle to the IPCC carbon budget we find that it is not sensitive to fossil fuel emissions in the presence of uncertainties in...