Co-development of a cyclone family and an atmospheric river over the North Atlantic: a synoptic evolution with associated moisture transports
Co-développement d'une famille de cyclones et d'une rivière atmosphérique au-dessus de l'Atlantique Nord : une évolution synoptique avec transports d'humidité associés
Yano, Jun-Ichi ; Martínez-Alvarado, Oscar
Année de publication
2025
Atmospheric rivers, identified as narrow strips of high moisture transport, emerge and evolve with the synoptic-scale dynamics. Here, the co-development of a well-defined extensive atmospheric river crossing the North Atlantic Ocean and a cyclone family during the period of 18-20 September 2018 is presented from its initiation to the end from this perspective. The high moisture state of atmospheric rivers is maintained by the local supply of moisture over a short timescale of less than 24h by convergence and divergence not only associated with the synoptic-scale evolution of the cyclones but also associated with extensive horizontal transport.</div>
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