Details:

Journal Title:
Monthly Weather Review
Personal Author:
Zawislak, Jonathan ; Jiang, Haiyan ; Alvey, George R. ; Zipser, Edward J. ; Rogers, Robert F. ; ... More +
Zawislak, Jonathan ; Jiang, Haiyan ; Alvey, George R. ; Zipser, Edward J. ; Rogers, Robert F. ; Zhang, Jun A. ; Stevenson, Stephanie N. Less -
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) ; CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
OAR (Oceanic and Atmospheric Research) ; AOML (Atlantic Oceanographic and Meteorological Laboratory) ; CIMAS (Cooperative Institute for Marine and Atmospheric Studies) Less -
Description:
The structural evolution of the inner core and near environment throughout the life cycle of Hurricane Edouard (2014) is examined using a synthesis of airborne and satellite measurements. This study specifically focuses on the precipitation evolution and thermodynamic changes that occur on the vortex scale during four periods: when Edouard was a slowly intensifying tropical storm, another while a rapidly intensifying hurricane, during the initial stages of weakening after reaching peak intensity, and later while experiencing moderate weakening in the midlatitudes. Results suggest that, in a shear-relative framework, a wavenumber-1 asymmetry exists whereby the downshear quadrants consistently exhibit the greatest precipitation coverage and highest relative humidity, while the upshear quadrants (especially upshear right) exhibit relatively less precipitation coverage and lower humidity, particularly in the midtroposphere. Whether dynamically or precipitation driven, the relatively dry layers upshear appear to be ubiquitously caused by subsidence. The precipitation and thermodynamic asymmetry is observed throughout the intensification and later weakening stages, while a consistently more symmetric distribution is only observed when Edouard reaches peak intensity. The precipitation distribution, which is also discussed in the context of the boundary layer thermodynamic properties, is intimately linked to the thermodynamic symmetry, which becomes greater as the frequency, areal coverage, and, in particular, rainfall rate increases upshear. Although shear is generally believed to be detrimental to intensification, observations in Edouard also indicate that subsidence warming from mesoscale downdrafts in the low- to midtroposphere very near the center may have contributed favorably to organization early in the intensification stage.
Source:
Monthly Weather Review, 144(9), 3333-3354.
DOI:
https://doi.org/10.1175/MWR-D-16-0018.1
Document Type:
Journal Article
Funding:
Grant no. NA13OAR4590191 ; Grant no. NA15OAR4590199 ; Grant no. NA14NWS4680028
Grant no. NA13OAR4590191 ; Grant no. NA15OAR4590199 ; Grant no. NA14NWS4680028 Less -
Rights Information:
Other
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:f3d42e8fc56cac009054ea29887e4fed3f77cdc0f8df2a40f1414aef0f4e9393
Download URL:
https://repository.library.noaa.gov/view/noaa/16183/noaa_16183_DS1.pdf
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