Raymond, C., Singh, D., and Horton, R. M. (2017). Spatiotemporal patterns and synoptics of extreme wet-bulb temperature in the contiguous United States. J. Geophys. Res. Atmos., 122. https://doi.org/10.1002/2017jd027140
We discovered differences in the patterns and meteorology underlying humid-heat extremes in the U.S. Specifically, we found that they are driven more by temperature anomalies in the cooler and wetter parts of the country, and more by humidity anomalies in the hotter and drier parts of the country. We also determined that sea-surface-temperature anomalies in the central Pacific correspond closely with the occurrence of humid-heat extremes, much more so than ocean temperatures just offshore.