|
ИСТИНА |
Войти в систему Регистрация |
Интеллектуальная Система Тематического Исследования НАукометрических данных |
||
The effect of cloud condensation nuclei reduction over Moscow during spring 2020 lockdown on the cloud characteristics according to the COSMO simulations and measurementsтезисы доклада
- Авторы: Khlestova J., Chubarova N., Shatunova M.
- Сборник: ABSTRACTS of presentations during the 20th AerCom and the 9th AeroSAT workshops, 11-15 October 2021
- Тезисы
- Год издания: 2021
- Первая страница: 15
- Последняя страница: 16
- Аннотация: We analyzed the impact of spring lockdown due to COVID-2019 in Moscow on the number concentration of cloud particles (Nd) and the physical characteristics of clouds. The cloud properties were evaluated according to the satellite MODIS data (version 6). In addition, we used CERES satellite data product and radiative observations at the Meteorological Observatory of Moscow State University for the evaluation of global irradiance at ground. The number concentration of cloud particles was retrieved by the methods described in (Quaas et al., 2006; McComiskey et al., 2009). Based on Nd retrievals we carried out simulations using the COSMO-Ru mesoscale model (Rivin et al., 2020) with twomoment microphysics (Seifert and Beheng, 2006) at 1 km grid step and cloud-radiation interaction scheme CLOUDRAD, which adjusts the aerosol-cloud radiative effect using the number concentration of cloud condensation nuclei (Muskatel et al., 2021). The air mass northern advection was observed during the most of the lockdown period (Chubarova et al., 2021). We showed that in similar meteorological conditions with northern advection the number concentration of cloud particles over Moscow during the spring lockdown of 2020 was lower by approximately 100 cm-3 than the Nd during the springs of 2018 and 2019. The median number concentrations of cloud particles in the cases of northern advection were 196 (221) cm-3 according to methods 1 (and 2) during the lockdown period and 269 (306) cm-3 during the springs of 2018-2019. The model simulations demonstrate that the reduction of Nd has a noticeable effect on the liquid water path, cloud optical thickness and global irradiance at the ground. The liquid water path declines by 5 g/m² (6%) due to the Nd reduction. The clouds are getting optically thinner, and the global irradiance at the ground increases by 10 W/m² (16%) in overcast conditions.This research has been supported by the Russian Government (grant number 075-15-2021-574).
- Добавил в систему: Шувалова Юлия Олеговна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | abstracts_AC2021.pdf | 1,0 МБ | 2 ноября 2021 [khlestova] |