Comparison of microphysical characteristics of rain between the Southern Korean Peninsula and Oklahoma using two-dimensional video disdrometer data

Bang, Wonbae; Lee, GyuWon; Ryzhkov, Alexander; Schuur, Terry; Sunny Lim, Kyo-Sun

doi:10.1175/JHM-D-20-0087.1

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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

Comparison of microphysical characteristics of rain between the Southern Korean Peninsula and Oklahoma using two-dimensional video disdrometer data

2020
By Bang, Wonbae ; Lee, GyuWon ; Ryzhkov, Alexander ; ...
Source: Journal of Hydrometeorology, 21(11), 2675-2690

Details Related Documents You May Also Like

Details:

Journal Title:

Journal of Hydrometeorology
Personal Author:

Bang, Wonbae ; Lee, GyuWon ; Ryzhkov, Alexander ; Schuur, Terry ; Sunny Lim, Kyo-Sun

Bang, Wonbae ; Lee, GyuWon ; Ryzhkov, Alexander ; Schuur, Terry ; Sunny Lim, Kyo-Sun Less -
NOAA Program & Office:

CIMMS (Cooperative Institute for Mesoscale Meteorological Studies) ; OAR (Oceanic and Atmospheric Research) ; NSSL (National Severe Storms Laboratory)

CIMMS (Cooperative Institute for Mesoscale Meteorological Studies) ; OAR (Oceanic and Atmospheric Research) ; NSSL (National Severe Storms Laboratory) Less -
Description:

Differences in atmospheric environments can have a significant impact on microphysical processes of precipitation. Dominant warm (cold) rain processes in East Asia (southern Great Plains of the United States) are implied by a large (small or constant) gradient of reflectivity at low levels in vertical reflectivity profiles. Long-term ground observations using two-dimensional video disdrometers were conducted in the southern Korean Peninsula (KOR) and Norman, Oklahoma, United States (OKL). Raindrop size distributions (RSD) and their moments in the two regions were analyzed in the framework of scaling normalized RSDs. Results show that the concentrations of small (big) raindrops were higher (smaller) in KOR than in OKL. KOR RSDs were also found to be characterized by relatively high characteristic number concentrations N′0 and small characteristic diameters D′m when compared to OKL RSDs. The N′0 increases with increasing D′m in both KOR and OKL at lower Z with the opposite trend at higher Z. In addition, OKL RSDs with D′m>2.5mm indicate the existence of an equilibrium between coalescence and breakup processes. Rainfall estimation relationships between the rain rate R and radar variables were retrieved from scattering simulations at S-, C-, and X-band wavelengths. KOR RSDs showed relatively small horizontal reflectivity and specific differential phase shift at the same R and same wavelength when compared to OKL RSDs. The regional dependency was significant due to the different microphysical process in KOR and OKL. The specific attenuation of KOR was, however, similar to that of OKL only at S band, indicating an advantage of using specific attenuation in S band in rainfall estimation.
Keywords:

[+]

Cloud Microphysics Drop Size Distribution Surface Observations
Source:

Journal of Hydrometeorology, 21(11), 2675-2690
DOI:

https://doi.org/10.1175/JHM-D-20-0087.1
Document Type:

Journal Article
Funding:

Grant no. NA16OAR4320115
Place as Subject:

Asia ; North America

Asia ; North America Less -
Rights Information:

Other
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:49387f83cd4e3e2cc4cb8ba0d9f72a680b0c5407132dfa58b54770395c7be6ab
Download URL:

https://repository.library.noaa.gov/view/noaa/31634/noaa_31634_DS1.pdf
File Type:

[PDF-2.91 MB]