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 produced the first comprehensive regional analysis of the patterns and meteorology of humid-heat extremes in the U.S. Through development of a new methodology to decompose temperature and moisture contributions, we found that these are driven primarily by temperature anomalies in the cooler and wetter parts of the country, and primarily by moisture anomalies in the hotter and drier parts of the country. We also found significant potential predictability contained in preceding sea-surface temperatures and wave-activity fluxes. Contrary to initial hypotheses, for most U.S. regions SST anomalies in the central Pacific are most closely related with humid-heat extremes, much more so than SSTs just offshore.