Figure 2
From: Contrasting impacts of dry versus humid heat on US corn and soybean yields
Correlation between dry and humid heat days for the corn growing regions. Year-to-year correlation coefficients for (a,c) between the number of extreme heat days (exceeding the 90th or 95th percentile threshold of maximum daily dry-bulb temperature, Tmax) and extreme humid heat days (exceeding the local 90th or 95th percentile thresholds of daily maximum daily wet-bult temperature, Twmax), and (b,d) between the number of extreme dry heat days (exceeding the 90th or 95th percentile threshold for Tmax, but not exceeding the corresponding threshold for Twmax) and extreme humid heat days. Correlation values significant at the 5% level using a two-sided Student-t test are shown as filled circles and the non-significant correlations are shown as open circles. The maps are made with ArcGIS Pro 2.2.0 with the US base map downloaded from Census Bureau, https://catalog.data.gov/dataset/2019-cartographic-boundary-shapefile-current-census-tract-for-united-states-1-500000.
