Fig. 4: Increased low-level geopotential heights due to intensified North Atlantic subtropical high.
From: Breaking the link: warming disrupts early-season rainfall predictability in the Caribbean
May–July mean 850-hPa geopotential heights (m, shaded contours) and 925-hPa horizontal wind speeds (m s−1, quivers) averaged over a 1979–2001 and b 2002–2024. Dashed contours indicate the 1560-gph contour line and highlight the westward extension of the North Atlantic Subtropical High (NASH). The 2002–2024 minus 1979–2001 difference in the mean variables is shown in (c). The statistical significance of long-term changes in geopotential heights and circulation is shown in Fig. S3.
