An Engineering Hypothesis for Mitigating South Asian Heat-Dome Extreme Heat via High-Altitude Bagua-Arranged Artificial Anticyclone Array of Tethered Venturi Units

Every April–June, terrain forcing from the Qinghai-Xizang Plateau generates stationary South Asian High and heat-dome sinking circulation over the South Asian subcontinent at 500 hPa, confining near-surface thermal energy and triggering frequent destructive extreme heat across India, Pakistan and Bangladesh. Conventional weather modification cannot break this closed adiabatic subsidence fundamentally. This paper proposes a ground-tethered Venturi engineering array deployed at 5.5 km altitude. Totally 384 six-meter Venturi devices are arranged in Bagua topological layout to produce clustered small clockwise anticyclones, which gradually merge into a giant artificial mid-level anticyclone with far higher rotational speed than natural South Asian High. The strong vortex shear destroys the closed heat-dome circulation, releases trapped boundary-layer heat and increases regional rainfall moderately. Three safety constraints including fixed rotation mode, ground tether limitation and Himalayan geographic barrier avoid abnormal vortex drift toward ocean and tropical cyclone transformation. The artificial vortex decays naturally within 3–7 days after operation. A four-step validation plan from numerical simulation to field pilot test is proposed. This scheme offers a new feasible route for active artificial suppression of seasonal extreme high temperature.