Severe Thunderstorm Internal Structure from Dual-Doppler Radar Measurements

Eagleman, J. R.; Lin, Wen

doi:10.1175/1520-0450-16.10.1036

Cited by 11 publications

(8 citation statements)

References 10 publications

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“…Comprehensive analyses of tornadic thunderstorms using multiple-Doppler radar observations have provided detailed documentation of the important features of these storms (cf. Ray et al 1975, 1981, Brandes 1977, Eagleman & Lin 1977. Numerical simulations have also provided an informative view of supercell thunderstorms, particularly those conducted in idealized environmental conditions, where various environmental influences can be selectively evaluated (cf.…”

Section: Storm Propagationmentioning

confidence: 99%

Dynamics of Tornadic Thunderstorms

Klemp¹

1987

Annu. Rev. Fluid Mech.

284

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Section: Storm Propagationmentioning

confidence: 99%

Dynamics of Tornadic Thunderstorms

Klemp¹

1987

Annu. Rev. Fluid Mech.

284

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“…Measurements in another thunderstorm (Segman, 1970) by this laboratory also indicated a double-vortex structure. Data of a severe thunderstorm collected by dual-Doppler radars showed a very clear double-vortex structure at 5-6 km (Eagleman and Lin, 1977), and this storm occurred near Norman, Oklahorma on 8 June 1974. Figure 8 gives the mean radial velocity and reflectivity PPI maps.…”

Section: Mid-level Flow Structurementioning

confidence: 99%

Analysis of three supercell storms with Doppler weather radar data

2011

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Three supercell storms on induced different damages in Shandong Province. Storm 0927 was inferior in size and intensity to storms 0628 and 0624. The structure and evolvement of the three storms were analyzed in detail based on the WSR-98D radar data in combination with weather charts. The results show that mesoscale surface convergence triggered release of instable energy, which resulted in severe convection. During the development stage, storms 0927, 0628, and 0624 displayed multi-cell propagation, single-cell evolution, and multi-cell mergence, respectively. The storm tracks were similar: they were all right-moving supercell storms, i.e., moving at an angle of 30 • -70 • to the right of the mean wind and at a speed of about 45%-70% of the mean wind speed. In the mature stage, the maximum reflectivity appeared at the low level in storm 0927, mid level in storm 0628, and mid-upper level in storm 0624. These storms possessed almost all typical features of supercell storms: weak echo region (WER), bounded weak echo region (BWER), and mesocyclone. An organized mesocyclone formed at the middle height of an updraft, deepened gradually downward and upward, and became a typical mid-level mesocyclone with strong updrafts. The vertical structures of airflows in the three storms were similar, i.e., significant convergence at low level, nearly pure rotation at mid level, and divergent rotation at upper level. However, signatures of mid-level horizontal airflows in the three storms were different: at mid level, there was a single vortex in storm 0628, but a double-vortex flow pattern was seen in storms 0927 and 0624. The horizontal structure of the double-vortex flow was hard to be blown away by the environmental airflow, and thus the storms could persist for a longer period of time than the single vortex storm.Citation: Diao Xiuguang, Zhu Junjian, and Liu Zhihong, 2011: Analysis of three supercell storms with Doppler weather radar data.

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“…would then give corresponding sector averages based on compass points. [10][11][12] C--r-r-'T"--.,--r--.,--r--.,--r-,.-,--,--,-- …”

Section: -20~----~---l_f~l-~~----~----~~--~~----~----~~--~mentioning

confidence: 99%