Influence of the Tropical Indian Ocean Tripole on Summertime Cold Extremes Over Central Siberia

Abstract This study investigates the influence of interannual variability Indian Ocean tripole (IOT) on summertime cold extremes in Central Siberia. During positive IOT phases, two cross‐equatorial airflows are induced over tropical eastern and western Ocean. These strengthen ascending motion southern Asia (80°–125°E, 15°–25°N), increasing precipitation situ, as evidenced observations simulations by using Community Atmosphere Model. Serving a heat source, upper‐level Asian continent meridional teleconnection (ACMT) pattern transports signals from into Positive geopotential height anomalies Siberia ACMT favor more solar radiation to reach surface raise local temperatures through modulating tropospheric air expansion/compression, further reducing extreme days. Consequently, latent fluxes associated with acts an atmospheric bridge that links extremes.