Articles | Volume 21, issue 15
Research article
10 Aug 2021
Research article |  | 10 Aug 2021

The effect of forced change and unforced variability in heat waves, temperature extremes, and associated population risk in a CO2-warmed world

Jangho Lee, Jeffrey C. Mast, and Andrew E. Dessler

Data sets

Data from: Gridded global datasets for Gross Domestic Product and Human Development Index over 1990-2015 Dryad M. Kummu, M. Taka, and J. H. A. Guillaume

Columbia University Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11 CIESIN - Center for International Earth Science Information Network

Short summary
This paper investigates the impact of global warming on heat and humidity extremes. There are three major findings in this study. We quantify how unforced variability in the climate impacts can lead to large variations where heat waves occur, we find that all heat extremes increase as the climate warms, especially between 1.5 and 2.0 °C of the average global warming, and we show that the economic inequity of facing extreme heat will worsen in a warmer world.
Final-revised paper