The present issue 6.1 covers publications accepted during the first half of 2026. It contains five research articles, two essays, one invited address and one corrigendum.
The contributions address a broad range of subjects, including paleoclimatic temperature variability, the statistical analysis of possible climate drivers, ocean heat-content and Earth Energy Imbalance estimates, the economic and institutional dimensions of climate policy, observation-based assessments of the present climate, alternative hypotheses concerning recent warming, and laboratory investigations of radiative and convective heat transfer.
| Table of Contents | |
| Preface | iv |
| Editorial | vi |
| Research Articles | |
| Les Hatton: | 1 |
| Is a 1.1°C Rise in a Century Unusual?A Study of Interglacials in the Epica-Vostok Dataset | |
| Dai Ato: | 9 |
| Multivariate Analysis, Phase Verification, and the Rejection ofMan-made Positive Feedback Global Warming Theory | |
| Jonathan Cohler et al.: | 43 |
| IPCC’s Earth Energy Imbalance Assessment is Based on Physically InvalidArgo-Float-Based Estimates of Global Ocean Heat Content | |
| Roger Higgs: | 101 |
| Global Temperature Change by Solar Variation Outweighed Since the 1940sby the Warming Effect of Anthropogenic Airborne Black Carbon, Not CO₂? | |
| Michael Schnell and Hermann Harde: | 128 |
| Radiative and Convective Heat Transfer in the Atmosphere:Some Basic Laboratory Studies | |
| Invited Address | |
| Václav Klaus: | 77 |
| Clintel and Climate Change: A Few Remarks from a Klimarealist | |
| Essays | |
| David Shelley: | 82 |
| Are We in the Midst of a Climate Crisis? – NOAre Our CO₂ Emissions Causing Climate Change? – NO | |
| Ole Humlum: | 90 |
| The State of the Climate 2025: Global and Arctic,Based on Real Observations | |
| Antero Ollila: | 42 |
| Radiative Forcing of Water Vapour and its Use in Climate Models | |