Observational study on melting layer characteristics over Palau in Pacific Ocean

Krishna, U. V. Murali; Reddy, K. Krishna; Mastanaiah, R.; Shirooka, Ryuichi; Chen, Pan

doi:10.1016/j.jastp.2014.09.015

Cited by 5 publications

(1 citation statement)

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“…This enhanced reflectivity results primarily due to rise in dielectric constant from the melting of snowflakes (0.19) to water (0.9) near the melting layer along with an increase in fall velocities of rain drops towards the end of the melting process (Battan 1973). Several observational studies have been conducted to understand the BB characteristics and explained the BB effect both qualitatively and quantitatively (Ryde 1946;Cunningham 1947;Austin and Bemis 1950;Marshall and Gunn 1952;Atlas et al 1953;Wexler and Atlas 1956;Lhermitte and Atlas 1963;Fabry and Zawadzki 1995;Kowalewski and Peters 2010;Krishna et al 2014).…”

Section: Introductionmentioning

confidence: 99%

A case study on bright band transition from very light to heavy rain using simultaneous observations of collocated X- and Ka-band radars

et al. 2019

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The observations of bright band carried out simultaneously with X-and Ka-band radars for the first time over the Indian region have been examined to reveal various contrasting characteristics of bright band at the two wavelengths. The study reports the bright band observations on September 12-13, 2015 at millimeter and centimeter wavelengths and brings out a comparative analysis of the bright band features (e.g., intensity, thickness, height, etc.) under three different rain conditions ranging from very light (<0.1 mm/hr) to light (0.1-3 mm/hr) to heavy (3-5 mm/hr). It is seen that the bright band region at Ka-band is always narrower and situated at a higher altitude than at X-band frequency. Our analysis shows that at Ka-band frequency, the polarimetric fields like LDR can be utilized to detect and determine the bright band features using an appropriate selection of a threshold value of LDR, which is found to be −22 dB in this study and could be associated reasonably with the top and bottom heights of the bright band. This study explores the potential of both radars, particularly the Ka-band radar for probing the bright band effect and estimating its features which would be helpful to improve the quantitative estimates of precipitation.

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