Urban Heat Island High Water-Vapor Feedback Estimates and Heatwave Issues: A Temperature Difference Approach to Feedback Assessments

The goal of this paper is to provide an initial assessment water-vapor feedback (WVF) in humid urban heat island (UHI) environments based on temperature difference data. To achieve this, a novel WVF model was developed that can analyze global and UHI local Specifically, the applied comparative literature study similar cities located versus dry climates. found daytime ?T observed be 3.3 K higher compared climates when averaged over thirty-nine cities. Since direct measurement areas could prove challenging due variations lapse rates from tall buildings, modeling provides opportunity make preliminary where measurements may difficult. Thus, results first available assessment. find values for wet-biased 3.1 Wm?2K?1, 3.4 4 Wm?2K?1 5 °C, 15 30 °C average temperatures, respectively. also used reproduce values. This capability helps validate its findings. Heatwave assessments are discussed, as they strongly affected by support observation regions amplify than UHIs regions, exacerbating heatwave problems. Furthermore, recent studies have urbanization contributions warming more previously anticipated. Therefore, likely larger contributors such trends environments. These show concern strong issue environments, with possibly factor two average. indicates albedo management would effective way reduce resulting increase.