Category Archives: Oceans

Sea level rise: what’s the worst case?

by Judith Curry

Draft of article to be submitted for journal publication.

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Special Report on Sea Level Rise

by Judith Curry

I have now completed my assessment of sea level rise and climate change.

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Resplandy et al. Part 4: Further developments

By Nic Lewis

There have been further interesting developments in this story Continue reading

Resplandy et al. Part 3: Findings regarding statistical issues and the authors’ planned correction

By Nic Lewis

Introduction

The Resplandy et al. (2018) ocean heat uptake study (henceforth Resplandy18) is based on measured changes in the O2/N2 ratio of air sampled each year, compared to air stored in high pressure tanks originally sampled in the late 1980s and early 1990s, and in atmospheric CO2 concentration. These are combined to produce an estimate (ΔAPOObs) of changes in atmospheric potential oxygen since 1991 (ΔAPO). They break this series down into four components, including one attributable to ocean warming (ΔAPOClimate). By estimating the other three, they isolate the implied ΔAPOClimate and use it to estimate the change in ocean heat content. In two recent articles, here and here, I set out why I thought the trend in ΔAPOClimate – from which they derived their ocean heat uptake estimate – was overstated, and its uncertainty greatly understated. Continue reading

Resplandy et al. Part 2: Regression in the presence of trend and scale systematic errors

by Nic Lewis

In a recent article I set out why I thought that the trend in ΔAPOClimate was overstated, and its uncertainty greatly understated, in the Resplandy et al. ocean heat uptake study. In this article I expand on the brief explanation of the points made about “trend errors” and “scale systematic errors” given in my original article, as these are key issues involved in estimating the trend in ΔAPOClimate and its uncertainty.

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A major problem with the Resplandy et al. ocean heat uptake paper

by Nic Lewis

Obviously doubtful claims about new research regarding ocean content reveal how unquestioning Nature, climate scientists and the MSM are. Continue reading

Sea level rise: isostatic adjustment

by Judith Curry

A discussion thread to ponder the uncertainties in glacial isostatic adjustment and the implications for past and future sea level rise.

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