Changes in Cu Characteristics and Precipitation during Cu Merging
| Autor: | V. S. Snegurov, N. E. Veremei, A. V. Snegurov, Yu. P. Mikhailovskii, V. B. Popov, I. A. Tarabukin, A. A. Sin’kevich, E. V. Dorofeev, Yu. A. Dovgalyuk |
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| Rok vydání: | 2018 |
| Předmět: |
Fluid Flow and Transfer Processes
Atmospheric Science Radiometer 010504 meteorology & atmospheric sciences Meteorology Rain gauge 010505 oceanography Flux 01 natural sciences Lightning law.invention dBZ law Environmental science Precipitation Radar Intensity (heat transfer) 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | Russian Meteorology and Hydrology. 43:506-515 |
| ISSN: | 1934-8096 1068-3739 |
| DOI: | 10.3103/s1068373918080022 |
| Popis: | The results of investigation of convective cloud merging observed near Saint Petersburg are presented. Data obtained with a set of remote sensing instruments (radar, radiometer, and lightning location system) were analyzed. Rain gage network data are used. Clouds simulation is performed using a 1.5-dimensional nonstationary model. A method to calibrate the radar measurements to obtain precipitation characteristics using rain gage network data is developed. According to radar data, a 2-km increase in the cloud top height was observed after Cu merging, the maximum reflectivity of clouds increased at 10 dBZ, maximum rain intensity and rain flux increased by about two times. The increase in rainfall intensity is also corroborated by rain gage observations and numerical simulations. An increase in the intensity of lightning discharges during the merging is registered. |
| Databáze: | OpenAIRE |
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