The Interaction Of Atmospheric Rivers And High-Pressure Systems
Abstract
As Midlatitude Pacific storms migrate east, some develop moisture plumes that can stretch from the western United States to Hawaii. These events are commonly known as atmospheric rivers (ARs) and have been associated with some of worst flooding in the western United States. There is evidence that both extratropical ARs and low-level high-pressure systems form near the Hawaiian Islands, and the low-level high-pressure system aids moisture transport into the AR. Four AR events were analyzed, and this study found that ARs from these extratropical cyclones 1) result from the interaction of the surface high- and low-pressure system centers to form major (Pineapple Express) AR events; 2) are fed moisture from the high-pressure system to the east; and 3) have different relative sources of moisture that impact on observed downstream precipitation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2020
- Accession Number
- AD1127135
Entities
People
- Justin P. Van Es
Organizations
- Naval Postgraduate School