Characteristics of rainfall systems accompanied with Changma front at Chujado in Korea

You, Cheol‐Hwan; Lee, D. I.; Jang, Sang-Min; Jang, Myoung-Uoon; Uyeda, Hiroshi; Shinoda, Taro; Kobayashi, Fumiaki

doi:10.1007/s13143-010-0005-1

Cited by 27 publications

(15 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many types and structures of precipitation systems were observed during the field phase of GRL PHONE‐09, which was conducted from 24 June to 18 July 2009, at Chujado (33.95 ° N, 126.28 ° E) in the southwestern Korean Peninsula (Karev et al , 2010; You et al , ). One notable frontal precipitation system observed near the Changma front exhibited a line shape.…”

Section: Introductionmentioning

confidence: 92%

Structure and evolution of line‐shaped convective systems associated with C hangma front during GRL PHONE ‐09: 6 J uly 2009 case

et al. 2013

View full text Add to dashboard Cite

This study investigates the structure and evolution of line-shaped convective systems (LCSs) associated with the Changma front observed over Chujado in the southwestern Korean Peninsula by using intensive observational data from upper-air sounding and Doppler radars. LCSs embedded as a multicellular precipitation system developed north of the warm front and persisted for 4 h. With continuous new cells development, the convective cells gradually strengthened and merged into the LCSs and exhibited a high low-level mixing ratio, weak vertical wind shear, and negligible instability. A rear-to-front jet corresponding to a low-level jet (LLJ) was concurrent with a high equivalent potential temperature (θ e ) environmental inflow over the warm front, which suggests that the rear-to-front jet with moist air induced destabilization. Three-dimensional kinematic and reflectivity structures of the LCSs exhibited homogeneous southerly and southwesterly winds with height, small horizontal wind shear, and convergence. Transfer of positive u and v momentum upward by convective eddies into the LCSs and of horizontal momentum occurred through organized convection; both these transfers acted to intensify the LLJ.

show abstract

Section: Introductionmentioning

confidence: 92%

Structure and evolution of line‐shaped convective systems associated with C hangma front during GRL PHONE ‐09: 6 J uly 2009 case

et al. 2013

View full text Add to dashboard Cite

show abstract

“…This estimation of radar rainfall is based on the relationship between reflectivity (Z) and rainfall rate (R), known as the Z−R relation (R(Z)). Experimentally measured drop size distributions (DSDs) have been used extensively to obtain both radar reflectivity and rainfall rate (Compos and Zawadzki, 2000;Jang et al, 2004;You et al, 2004). There is no unique R(Z), since DSDs can be varied storm to storm and even within a single storm (Battan, 1973;You et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Approaches to radar reflectivity bias correction to improve rainfall estimation in Korea

et al. 2016

View full text Add to dashboard Cite

Abstract. Three methods for determining the reflectivity bias of single polarization radar using dual polarization radar reflectivity and disdrometer data (i.e., the equidistance line, overlapping area, and disdrometer methods) are proposed and evaluated for two low-pressure rainfall events that occurred over the Korean Peninsula on 25 August 2014 and 8 September 2012. Single polarization radar reflectivity was underestimated by more than 12 and 7 dB in the two rain events, respectively. All methods improved the accuracy of rainfall estimation, except for one case where drop size distributions were not observed, as the precipitation system did not pass through the disdrometer location. The use of these bias correction methods reduced the RMSE by as much as 50 %. Overall, the most accurate rainfall estimates were obtained using the overlapping area method to correct radar reflectivity.

show abstract

“…Meso-α-scale lows (MLs) associated with heavy rainfall events are frequently observed along the Baiu/Changma/Meiyu fronts (e.g., Matsumoto et al, 1970;Ninomiya and Akiyama, 1971;Park et al, 1986;Ding et al, 2001;You et al, 2010;Zhang et al, 2014), and the relationship between such frontal depressions and heavy rainfall is the subject of considerable research. Based on several Japanese studies (e.g., Yoshizumi, 1977;Akiyama, 1978;Ninomiya and Yamazaki, 1979), Ninomiya and Muraki (1986) noted that intense Baiu precipitation was produced by the successive development of meso-α-scale frontal depressions.…”

Section: Introductionmentioning

confidence: 99%

Origin, evolution and structure of meso-α-scale lows associated with cloud clusters and heavy rainfall over the Korean peninsula

Shin

Lee

2015

Asia-Pacific J Atmos Sci

View full text Add to dashboard Cite

An investigation was conducted to describe the locations of initial occurrence, evolution and structure of meso-α-scale lows (MLs) associated with cloud clusters and heavy rainfall over the Korean Peninsula using observation and reanalysis data. We selected 29 heavy rainfall events associated with MLs during the 10-year period of 2001-2010. The locations of initial ML occurrence are widely spread from the eastern flank of the Tibetan Plateau to the Yellow Sea. These locations are grouped into 3 regions: 1) the eastern flank of the Tibetan Plateau (R1, 6 cases), 2) central and eastern China (R2, 16 cases), and 3) the Yellow Sea (R3, 7 cases). Initial MLs tend to occur within a deep trough over the eastern flank of the Tibetan Plateau (R1 cases) or a long trough extended northeastward from the southeast of the Tibetan Plateau along the northwestern rim of the western Pacific subtropical high (a majority of R2 cases and two R3 cases). Horizontal temperature gradients are weak over the areas of initial MLs. Meso-α-scale lows tend to develop in the lower troposphere (e.g., below 700 hPa) in an environment of existing cyclonic vorticity. And they are accompanied by anticyclonic vorticity in the upper troposphere. The speed of ML movement varies with each case and with the location of ML. The average speeds of ML movement are 32.4, 37.2 and 40.4 km h −1 for the R1, R2 and R3 groups, respectively. Meso-α-scale lows are shown to have a warm-core structure in general. They are tilted toward various directions with a majority of them (14 of 29 MLs) tilting northward with height.

show abstract

Characteristics of rainfall systems accompanied with Changma front at Chujado in Korea

Cited by 27 publications

References 23 publications

Structure and evolution of line‐shaped convective systems associated with C hangma front during GRL PHONE ‐09: 6 J uly 2009 case

Structure and evolution of line‐shaped convective systems associated with C hangma front during GRL PHONE ‐09: 6 J uly 2009 case

Approaches to radar reflectivity bias correction to improve rainfall estimation in Korea

Origin, evolution and structure of meso-α-scale lows associated with cloud clusters and heavy rainfall over the Korean peninsula

Contact Info

Product

Resources

About