Earth Sciences

Projected increase in summer heat-dome-like stationary waves over Northwestern North America

Z. Chen, J. Lu, et al.

This groundbreaking research conducted by Ziming Chen, Jian Lu, Chuan-Chieh Chang, Sandro W. Lubis, and L. Ruby Leung uncovers a startling 95% increase in summer stationary wave amplitude projected for Northwestern North America, primarily due to tropical Pacific heating changes. The findings suggest that heatwave risks in the region may escalate significantly by the end of the century.

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Abstract

This study investigates projected changes in summer stationary waves over Northwestern North America using data from the Coupled Model Intercomparison Project Phase 6 (CMIP6). Findings reveal a significant 95% increase in summer stationary wave amplitude under a high-emission scenario (2080–2099) compared to 1995–2014. This increase is primarily driven by diabatic heating changes over the tropical Pacific, enhancing wave activity flux into Northwestern North America. The study concludes that this amplified heat-dome-like stationary wave anomaly will likely heighten heatwave risk in the region.

Publisher

npj Climate and Atmospheric Science

Published On

Nov 21, 2023

Authors

Ziming Chen, Jian Lu, Chuan-Chieh Chang, Sandro W. Lubis, L. Ruby Leung

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