Mitchell Dickau, PhD

@mitchelldickau.bsky.social

4323 Followers 126 Following

Climate modelling. Temperature overshoot. Remaining carbon budgets. Temporary carbon storage. Effect of climate change on outdoor skating in Canada. Post-doctoral fellow, Concordia University https://mitchell-dickau.github.io/

A figure showing the relationship between degree-years of overshot (x-axis) and the additional ocean warming caused by overshoot (y-axis). Dozens of faint grey trajectory lines loop upward and to the right, tracing the evolution of this relationship over time in an ensemble of overshoot scenarios. The endpoints of all these trajectories generally land on a single, linear red regression line that extends from the origin, annotated with an R-squared value of 0.996. A horizontal colorbar at the bottom indicates the "Peak temperature reached during overshoot (°C)," ranging from blue (lower peak temperatures) to red (higher peak temperatures). The endpoint dots fall perfectly along the same straight line regardless of their colour, visually demonstrating that long-term additional ocean warming is proportional to the cumulative degree-years of overshoot and independent of the peak temperature reached.

A global map illustrating the average spatial reversibility percentage of Surface Air Temperature (SAT) across a climate model ensemble immediately following a temperature overshoot. A vertical colorbar on the right scales from 80.0% (dark red) to 120.0% (dark blue), with 100.0% represented as white. The map shows a stark regional contrast: high-latitude regions, including the Arctic and Antarctica, are shaded in deep red and orange (below 100%), indicating they remain warmer than the baseline scenario. Meanwhile, low- and mid-latitude regions across the continents and oceans are shaded in light to dark blue (above 100%), indicating they are cooler than the baseline. Black contour lines outline the boundaries between these warming and cooling zones.