Idealized Model Simulations to Determine Impacts of Storm‐Relative Winds on Differential Reflectivity and Specific Differential Phase Fields
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields

Dates

to

Document Data
Library
People
Clear All
Clear All

For additional assistance using the Custom Query please check out our Help Page

The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i

Idealized Model Simulations to Determine Impacts of Storm‐Relative Winds on Differential Reflectivity and Specific Differential Phase Fields

Filetype[PDF-1.98 MB]


Details Supporting Files You May Also Like

Details:

  • Journal Title:
    Journal of Geophysical Research: Atmospheres
  • Personal Author:
  • NOAA Program & Office:
    OAR (Oceanic and Atmospheric Research)
  • Description:
    Hydrometeors of varying sizes have different fall speeds; for example, larger raindrops have greater fall speeds than smaller raindrops. The resultant differential sedimentation leads to differences in residence time in a sorting layer where drops can be advected by the storm‐relative winds. The resulting size sorting has an effect on the polarimetric radar variables including specific differential phase KDP and differential reflectivity ZDR. This study uses a simple numerical model of raindrop size sorting to analyze and further elucidate the relationship between the storm‐relative winds and the ZDR and KDP fields. Increased mean storm‐relative winds lead to increased ZDR magnitudes and decreased KDP magnitudes. The separation distance between ZDR and KDP maxima is proportional to the magnitude of the mean storm‐relative wind and the orientation of a vector from ZDR to KDP maxima is aligned with the mean storm‐relative wind over the sorting layer. Further, it is shown that larger values of storm‐relative helicity are associated with greater separation distances and separation orientations approaching orthogonal to the shear vector over the sorting layer.
  • Keywords:
  • Source:
    Journal of Geophysical Research: Atmospheres, 125(24)
  • DOI:
  • ISSN:
    2169-897X;2169-8996;
  • Format:
    PDF
  • Publisher:
    American Geophysical Union (AGU)
  • Document Type:
    Journal Article
  • Funding:
    Grant no. NA19OAR4590222
  • Rights Information:
    Other
  • Compliance:
    Library
  • Main Document Checksum:
  • Download URL:
  • File Type:

You May Also Like

Checkout today's featured content at repository.library.noaa.gov

Version 3.27.1