Characteristics of thunderstorm centers during the development of mesoscale convective systems over the south of Western Siberia

In this work, estimates of thunderstorm activity during the passage of mesoscale convective complexes (MCC) in the south of Western Siberia for 2016–2019 were obtained. When analyzing the trajectories of the MCC movement, it was revealed that it passes from the southwest to the northeast. The duration of the thunderstorm activity generated by the MCC is on average about 9 hours. At the same time, the duration of thunderstorm activity less than 4 hours was not noted. average area of a thunderstorm center ~ 5700 km2. The average distance covered by a thunderstorm is ~ 470 km. According to WWLLN, the number of lightning strikes is ~ 530

Мезомасштабные конвективные комплексы на юго-востоке Западной Сибири и их пространственно-временное распределение

The temporal variability of mesoscale convective complexes (MCCs) formed over southern Western Siberia for the period 2010–2019 has been assessed. During the period of study a total of 279 cases of MCCs were recorded, and two centers having the highest occurrence of MCC were identified. The first repeatability maximum is observed over the northwestern slopes of the Altai Mountains, the Salair Range and the Baraba Lowland, and the second is located over the southern Omsk Region. It was found that higher MCC repeatability over the northwestern Altai Mountains is represented by the air mass genetic type, whereas the MCCs, occurring over the Salair ridge and the Baraba lowland, are related to the frontal type. When evaluating the characteristics of the MCC, it was revealed that the areas of the air mass MCCs are smaller than for the frontal ones, but their cloud top height and the cloud effective radius is higher than for the frontal ones. Проведена оценка характеристик мезомасштабных конвективных комплексов (МКК) с помощью данных, полученных с искусственных спутников Земли. Отмечено, что прослеживается двухлетняя цикличность изменчивости характеристик МКК на юге Западной Сибири за период 2010–2019 гг. Установлены тренды повышения влагосодержания и размера облачных частиц, что может являться индикатором роста энергетики процессов, следствием чего является увеличение повторяемости опасных явлений погоды