Fig. 7
From: Rapid termination of the African Humid Period triggered by northern high-latitude cooling
CCSM3 model output showing the effect of north Atlantic cooling on northern African winds and precipitation during the AHP. Height-latitude plots along longitudes 10° E (a, c, e, g) and 40° E (b, d, f, h) during JJA season. a, b Tropospheric temperature anomalies (°C) for the EHfre–EH experiment, highlighting the cool anomaly over the northern Sahara. c, d Zonal wind speed (m s−1), with contours representing the early Holocene control run (EH; negative values represent easterly winds). Shading represents anomalies (EHfre—EH): red region around 150 hPa is a negative easterly anomaly, blue region a positive easterly anomaly. e, f Vertical flow (Pa s−1), with contours representing the EH control run (negative values represent upward motion). Shading represents anomalies (EHfre—EH): red shows decreased upward motion, blue increased upward motion. g Precipitation anomalies (EHfre–EH; mm day−1) along 10° E. h Precipitation anomalies (EHfre–EH; mm day−1) along 40° E
