The Effect of Climate Change on the Variability of the Northern Hemisphere Stratospheric Polar Vortex by Mitchell, D, Osprey, S, Gray, L, Butchart, N, Hardiman, S, Ciarlton-Perez, A, Watson, P

The effect of climate changes on the variability of the Northern Hemisphere stratospheric polar vortex (vol 69, pg 2608, 2012) by Mitchell, D, Osprey, S, Gray, L, Butchart, N, Hardiman, S, Charlton-Perez, A, Watson, P

Larger spatial footprint of wintertime total precipitation extremes in a warmer climate by Bevacqua, E, Shepherd, TG, Watson, PAG, Sparrow, S, Wallom, D, Mitchell, D

“…Employing new multi‐thousand‐year climate model simulations, we show that under both 2.0 °C and 1.5 °C warming scenarios, wintertime total precipitation extreme extents would increase over about 80%–90% of the Northern Hemisphere extratropics (i.e., of the latitude band 28°–78°N). …”

Higher CO2 concentrations increase extreme event risk in a 1.5C world by Baker, HS, Millar, RJ, Allen, MR, Karoly, DJ, Beyerle, U, Guillod, BP, Mitchell, D, Shiogama, H, Sparrow, SN, Woollings, T, Allen, MR

“…Here, using an ensemble of model simulations, we show that atmospheric CO2 increase - a more predictable consequence of emissions compared to global temperature increase - has a significant impact on Northern Hemisphere summer temperature, heat stress, and tropical precipitation extremes. …”

Polar vortices on Earth and Mars: A comparative study of the climatology and variability from reanalyses by Mitchell, D, Montabone, L, Thomson, S, Read, P

“…Unlike on Earth, it is found that the Martian polar vortices are annular, and that the Northern Hemisphere vortex is far stronger than its southern counterpart. …”

Biogeophysical impacts of land use change on climate extremes in low emission scenarios: results from HAPPI-Land by Hirsch, A, Guillod, B, Seneviratne, S, Beyerle, U, Boysen, L, Brovkin, V, Davin, E, Doelman, J, Kim, H, Mitchell, D, Nitta, T, Shiogama, H, Sparrow, S, Stehfest, E, van Vuuren, D, Wilson, S

“…We also demonstrate that LUC contributes to more than 20% of the change in temperature extremes for large land areas concentrated over the Northern Hemisphere. However, we also identify sources of uncertainty that influence the multimodel consensus of our results including how LUC is implemented and the corresponding biogeophysical feedbacks that perturb climate. …”

Characterizing the Variability and Extremes of the Stratospheric Polar Vortices Using 2D Moment Analysis by Mitchell, D, Charlton-Perez, A, Gray, L

“…The mean state, variability, and extreme variability of the stratospheric polar vortices, with an emphasis on the Northern Hemisphere (NH) vortex, are examined using two-dimensional moment analysis and extreme value theory (EVT). …”