Developing Story
Tibetan Plateau Heat–California Rain Teleconnection
A UCLA-led study identified a new climate teleconnection linking abnormally high Tibetan Plateau temperatures in early winter to catastrophic rainstorms in California, based on analysis of the 2016-2017 and 2022-2023 rain events.
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## Overview
A new study led by researchers from the University of California, Los Angeles has revealed a previously unidentified climate connection: abnormally high temperatures across the Tibetan Plateau in early winter can trigger catastrophic rainstorms in California (SCMP, September 11).
## Key Findings
- The study examined the winters of 2016-2017 and 2022-2023, when record-breaking rain swept across California and surrounding areas during years when drier weather was expected (SCMP, September 11).
- These rain events caused billions of dollars in damage and several deaths (SCMP, September 11).
- Researchers identified the link between Tibetan Plateau heat and California precipitation as a previously unidentified climate teleconnection (SCMP, September 11).
## Strategic Context
This discovery adds to a growing body of climate science identifying long-distance atmospheric teleconnections that affect regional weather extremes, joining other recent findings on the AMOC, jellyfish-driven reactor shutdowns, and other climate-linked disruptions. Understanding this mechanism could improve seasonal forecasting for California's water management and disaster preparedness.
## Why It Matters
For policymakers, insurers, and infrastructure planners in California, this teleconnection could offer new early-warning capability for extreme rainfall events, with implications for water resource management, flood insurance pricing, and climate adaptation planning.