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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Влияние Москвы на интенсивные летние осадкитезисы доклада Электронная публикация
- Авторы: Ярынич Ю.И., Варенцов М.И., Платонов В.С., Степаненко В.М.
- Сборник: Международная конференция и школа молодых ученых по измерениям, моделированию и информационным системам для изучения окружающей среды ENVIROMIS-2022
- Тезисы
- Год издания: 2022
- Место издания: ИМКЭС СО РАН Томск
- Первая страница: 326
- Последняя страница: 329
- Аннотация: Large cities are especially vulnerable to heavy precipitation events, which can lead to significant economic losses. This topic is relevant both due to the observed increase in the frequency of dangerous weather phenomena including extreme precipitation [Ye et al., 2017; Chernokulsky et al., 2019] in midlatitudesin general, and due to the previously noted intensification of deep atmospheric convection and associated rainfall over urban areas [Han et al., 2014]. Despite the numerous studies, the magnitude of urban effects on intense precipitation and their physical drivers are not fully understood yet.In this study, we investigated urban effects on intensity and frequency of summer precipitation events exemplified by Moscow megacity, Russia. Previously, an increase of mean summer precipitation amount by 10% over Moscow was revealed according to COSMO-CLM simulations for multiyear period [Varentsov et al., 2018]. Here we used long-term (1988-2020) observations timeseries at urban and rural weather stations. Statisticalanalysis was performed separately for categories of precipitation intensity. Moreover, we estimated atmospheric convective instability and frontal parameters based on ERA5 reanalysis data in order to classify precipitation cases according to the synoptic situation.Eventually, we obtained that mean seasonal precipitation sum among urban stations is higher than mean sum among rural stations on 5.3%. The influence of the Moscow megacity is positive and the highest in cases when daily precipitation sum is between 20 and 40 mm. For both weak (1 – 5 mm) and extreme (> 60 mm) precipitation mean repeatability of such cases in Moscow is lower than for the rural stations. The influence ofthe city is higher in unstable atmosphere with weak mean winds and high water vapor content.
- Добавил в систему: Платонов Владимир Сергеевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Yarinich_Varentsov_Platonov_Stepanenko_ENVIROMIS_2022.pdf | 615,4 КБ | 2 сентября 2022 [VPlatonov] |