A Climatology of Atmospheric Rivers Over the Northeast United States

Anna Kaminski, “A Climatology of Atmospheric Rivers Over the Northeast United States”
Mentor: Clark Evans, Mathematical Sciences

Atmospheric Rivers (ARs) are characterized by long, narrow corridors of enhanced integrated water vapor (IWV) and integrated vapor transport (IVT) located in the warm sector of midlatitude extratropical cyclones. ARs are well-known contributors to high-impact precipitation and precipitation-related events (e.g., floods, landslides, avalanches, etc) and water resources across the western United States. Recent research has also demonstrated that ~40% of southeast U.S. heavy precipitation events in the winter and the transition seasons occur in association with ARs, AR-like, or AR-related features.The goal of this research was to develop a complementary climatology of ARs over the northeast U.S. from 38–48N and 80–66W every six hours for the years 1988–2017 and apply those results to different occurrences of high-impact weather. While many objective algorithms have recently been developed to automatically identify corridors of IWV and IVT resembling ARs, herein we seek to subjectively identify ARs using objective criteria (e.g., an IVT magnitude >250 kg m–1s–1 that is >2000 km in length and <1000 km wide or an aspect ratio of ~2:1, and linked to an extratropical cyclone). This presentation will review the results of the climatology summarizing the >3000 ARs identified (~101 per year) over the NEUS. The ARs are approximately evenly distributed throughout the year, with an average duration over the domain of 43 hours, average direction of southwest, and an average maximum IVT magnitude of 737 kg m–1s–1.

Comments

  1. Hello Anna.

    I really appreciate the work that you put into your research project. I had not heard of Atmospheric Rivers before, and I found your presentation to be fascinating. The layout of your presentation was very clear which made the content easier to understand. I also found the figures to be very helpful as well. Kudos on including the voice over through video as well. Very well done overall!

  2. You seem to be a natural presenter – very well done! Also good to see someone giving the northeast ARs some love

  3. Excellent research and presentation. Knowing very little about AR, I appreciated how you introduced the concept prior to delving in to your research. Your tone and cadence kept me engaged throughout the entire presentation. It is evident that you are well versed on the topic and have a deep understanding of the research. Congrats on a job well done!

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