@article{8326947793e24aafa7e0d2e877a2699c,
title = "Intensification of a distant hurricane by warm-core eddies in the Gulf Stream in boreal fall",
abstract = "This study investigated how warm-core eddies (WCEs) in the Gulf Stream (GS) modulated the intensity of a distant tropical cyclone (TC) approaching the current in October. We performed cloud-resolving regional simulations including a control run with the observed WCEs and a sensitivity run excluding the WCEs. These simulations found that the WCEs played a favorable role in the development of the distant TC. The WCEs affected the synoptic-scale thermodynamic environments over the North Atlantic through the enhanced heat and moisture supply from the GS, increasing the moisture imports toward the distant TC. The WCEs-enhanced moisture influx created very moist environments in the inner core. This inner-core moistening was favorable for deep eyewall convection and an associated TC secondary circulation, leading to TC development. This result indicates the importance of WCEs in facilitating the remote process leading to TC development that previous studies have proposed.",
author = "Keita Fujiwara and Ryuichi Kawamura",
note = "Funding Information: The authors would like to thank Dr. Rhys Parfitt and three anonymous reviewers for their important comments and useful suggestions. We used the following publicly available data: HURDAT2 (available at https://www.nhc.noaa.gov/data/#hurdat ), OISST V2.1 (available at https://www.ncei.noaa.gov/products/optimum-interpolation-sst ), and NCEP GFS data (available at https://rda.ucar.edu/datasets/ds084.1/ ). In Figure 1 , we used the Japanese 55‐year Reanalysis (available at http://search.diasjp.net/ja/dataset/JRA55 ), J‐OFURO3 (available at http://search.diasjp.net/en/dataset/JOFURO3_V1_1 ), and DUACS (available at https://cds.climate.copernicus.eu/cdsapp#!/dataset/satellite‐sea‐level‐global?tab=overview ). This research was supported by JSPS KAKENHI grants JP19H05696, JP20H00289, and JP20J11837. Publisher Copyright: {\textcopyright} 2022 The Authors. Atmospheric Science Letters published by John Wiley & Sons Ltd on behalf of the Royal Meteorological Society.",
year = "2022",
doi = "10.1002/asl.1141",
language = "English",
journal = "Atmospheric Science Letters",
issn = "1530-261X",
publisher = "John Wiley and Sons Inc.",
}