El Nino signature in Alaskan river breakups
G. Boffetta
TL;DR
This study identifies a significant El Nino influence on Alaskan river breakups, with earlier ice breakups during El Nino years, demonstrating ENSO's remote regional impact.
Contribution
It reveals a statistically significant El Nino signature in Alaskan river breakup timing, highlighting a teleconnection between tropical Pacific ENSO and Arctic hydrological events.
Findings
El Nino years lead to about 3.4 days earlier river breakups
The ENSO teleconnection is statistically significant
Demonstrates remote regional impact of ENSO phenomena
Abstract
A signature of El Nino-Southern Oscillation is found in the historical dataset of the Alaskan Tanana river breakups where the average ice breaking day is found to anticipate of about 3.4 days when conditioned over El Nino years. This results represents a statistically significant example of ENSO teleconnection on regions remote from tropical Pacific.
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Taxonomy
TopicsOceanographic and Atmospheric Processes · Methane Hydrates and Related Phenomena · Arctic and Antarctic ice dynamics