Category Archives: Uncategorized

We have recently published a study in Geophysical Research Letters titled “The necessity of cloud feedback for a basin-scale Atlantic Multidecadal Oscillation“. The Atlantic Multidecadal Oscillation (AMO) – a basin-scale coherent oscillation of sea surface temperatures over the North Atlantic – is … Continue reading →

2015 was the warmest year in the instrumental record (dating back to the mid/late 19th century) in all the major surface temperature datasets including NASA’s GISTEMP: However, 2015 still falls below the CMIP5 climate model mean value (left panel below). The … Continue reading →

Libertarian writer Robert Tracinski’s recently wrote an article called “What It Would Take to Prove Global Warming” in which he challenged mainstream climate science on a number of issues. I was asked by a few people to give my thoughts … Continue reading →

1) What is a climate model? In order to correctly interpret climate model output it is important to first understand what a computer climate model is. Climate models are software that simulate the whole earth system by using our knowledge … Continue reading →

This post appeared at Real Climate We recently published a study in Scientific Reports titled “Comparing the model-simulated global warming signal to observations using empirical estimates of unforced noise”. Our study seemed to generated a lot of interest and we … Continue reading →

Our Paper, “Regions of significant influence on unforced global mean surface air temperature variability in climate models” has been highlighted by a number of media outlets: sciencedaily carbonbrief scienceworldreport duke reportingclimatescience phys spacedaily green-energy-news rdmag astrobiologymagazie climatewire Neue Zuercher Zeitung (Swiss … Continue reading →