The Relationship Between Reflectivity and Rainfall Rate From Rain Size Distributions Observed in Hurricanes

Leighton, H.; Black, R.; Zhang, X.; Marks, F. D. Jr.

doi:10.1029/2022GL099332

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The Relationship Between Reflectivity and Rainfall Rate From Rain Size Distributions Observed in Hurricanes

2022
By Leighton, H. ; Black, R. ; Zhang, X. ; ...
Source: Geophysical Research Letters, 49, e2022GL099332

[PDF-1.44 MB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Leighton, H. ; Black, R. ; Zhang, X. ; Marks, F. D. Jr.

Leighton, H. ; Black, R. ; Zhang, X. ; Marks, F. D. Jr. 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:

Raindrop size distributions collected by the DROPLET MEASUREMENT TECHNOLogies Precipitation imaging probe from 17 flights through 6 hurricanes during National Oceanic and Atmospheric Administration’s hurricane field program in 2020 are used to study reflectivity (Z) and rainfall rate (RR) (R) relationship (i.e., Z-R relationship). The results show that the Z-R distribution is highly scattered and the scatter increases with RR and reflectivity up to 48 dBZ or 25 mm hr−1, after which it decreases rapidly. The range of the estimated RR from a power-law Z-R relationship can be as large as 50 mm hr−1 at reflectivity of 40 dBZ. The result from random forest regression model demonstrates that including the information of mass-weighted-diameter (Dm) along with radar reflectivity improves the estimated RR significantly.
Keywords:

[+]

Hurricanes Rain And Rainfall Raindrop Size Distribution Z-r Relationship
Source:

Geophysical Research Letters, 49, e2022GL099332
DOI:

https://doi.org/10.1029/2022GL099332
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by-nc/4.0/
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CC BY-NC
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Submitted
Main Document Checksum:

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urn:sha256:b2e80fce0bab0f028ce7b865c2d9b7622d0314a6791394aa56921fe157bed312
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https://repository.library.noaa.gov/view/noaa/48151/noaa_48151_DS1.pdf
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The Relationship Between Reflectivity and Rainfall Rate From Rain Size Distributions Observed in Hurricanes

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