Tracking the influence of cloud condensation nuclei on summer diurnal precipitating systems over complex topography in Taiwan

<p>This study focuses on how aerosols, serving as cloud condensation nuclei (CCN), affect the properties of diurnal precipitation under the weak synoptic weather regime over complex topography, which is a common summertime environmental regime in Taiwan. Semi-realistic large-eddy simulations (...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Y.-H. Chang, W.-T. Chen, C.-M. Wu, C. Moseley, C.-C. Wu
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/7b9bbbf86ff148adbadce940a6e93e43
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7b9bbbf86ff148adbadce940a6e93e43
record_format	dspace
spelling	oai:doaj.org-article:7b9bbbf86ff148adbadce940a6e93e432021-11-16T15:25:07ZTracking the influence of cloud condensation nuclei on summer diurnal precipitating systems over complex topography in Taiwan10.5194/acp-21-16709-20211680-73161680-7324https://doaj.org/article/7b9bbbf86ff148adbadce940a6e93e432021-11-01T00:00:00Zhttps://acp.copernicus.org/articles/21/16709/2021/acp-21-16709-2021.pdfhttps://doaj.org/toc/1680-7316https://doaj.org/toc/1680-7324<p>This study focuses on how aerosols, serving as cloud condensation nuclei (CCN), affect the properties of diurnal precipitation under the weak synoptic weather regime over complex topography, which is a common summertime environmental regime in Taiwan. Semi-realistic large-eddy simulations (LESs) were carried out using TaiwanVVM and driven by idealized observational soundings. We perform object-based tracking analyses, which diagnose both the spatial and temporal connectivity of convective systems, aiming to reduce the variability in convection and align the aerosol effects on the mature stage of the convective life cycle. In the hotspot areas of strong orographic locking processes, the precipitation initiation is postponed significantly when the CCN concentration is increased from the clean scenario to the normal scenario, which prolongs the development of local circulation and convection. For this organized regime, the occurrence of the tracked extreme diurnal precipitating systems is notably enhanced. Also, the 99th percentile of the maximum rain rate, cloud depth, and in-cloud vertical velocity during the lifetime of the diurnal precipitating systems increases by 9.4 %, 4.4 %, and 1.3 %. This study demonstrates that the design of semi-realistic LESs, as well as the object-based tracking analyses, is useful to investigate the responses of orographically driven diurnal convective systems to ambient conditions.</p>Y.-H. ChangW.-T. ChenC.-M. WuC. MoseleyC.-C. WuCopernicus PublicationsarticlePhysicsQC1-999ChemistryQD1-999ENAtmospheric Chemistry and Physics, Vol 21, Pp 16709-16725 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Chemistry QD1-999
spellingShingle	Physics QC1-999 Chemistry QD1-999 Y.-H. Chang W.-T. Chen C.-M. Wu C. Moseley C.-C. Wu Tracking the influence of cloud condensation nuclei on summer diurnal precipitating systems over complex topography in Taiwan
description	<p>This study focuses on how aerosols, serving as cloud condensation nuclei (CCN), affect the properties of diurnal precipitation under the weak synoptic weather regime over complex topography, which is a common summertime environmental regime in Taiwan. Semi-realistic large-eddy simulations (LESs) were carried out using TaiwanVVM and driven by idealized observational soundings. We perform object-based tracking analyses, which diagnose both the spatial and temporal connectivity of convective systems, aiming to reduce the variability in convection and align the aerosol effects on the mature stage of the convective life cycle. In the hotspot areas of strong orographic locking processes, the precipitation initiation is postponed significantly when the CCN concentration is increased from the clean scenario to the normal scenario, which prolongs the development of local circulation and convection. For this organized regime, the occurrence of the tracked extreme diurnal precipitating systems is notably enhanced. Also, the 99th percentile of the maximum rain rate, cloud depth, and in-cloud vertical velocity during the lifetime of the diurnal precipitating systems increases by 9.4 %, 4.4 %, and 1.3 %. This study demonstrates that the design of semi-realistic LESs, as well as the object-based tracking analyses, is useful to investigate the responses of orographically driven diurnal convective systems to ambient conditions.</p>
format	article
author	Y.-H. Chang W.-T. Chen C.-M. Wu C. Moseley C.-C. Wu
author_facet	Y.-H. Chang W.-T. Chen C.-M. Wu C. Moseley C.-C. Wu
author_sort	Y.-H. Chang
title	Tracking the influence of cloud condensation nuclei on summer diurnal precipitating systems over complex topography in Taiwan
title_short	Tracking the influence of cloud condensation nuclei on summer diurnal precipitating systems over complex topography in Taiwan
title_full	Tracking the influence of cloud condensation nuclei on summer diurnal precipitating systems over complex topography in Taiwan
title_fullStr	Tracking the influence of cloud condensation nuclei on summer diurnal precipitating systems over complex topography in Taiwan
title_full_unstemmed	Tracking the influence of cloud condensation nuclei on summer diurnal precipitating systems over complex topography in Taiwan
title_sort	tracking the influence of cloud condensation nuclei on summer diurnal precipitating systems over complex topography in taiwan
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/7b9bbbf86ff148adbadce940a6e93e43
work_keys_str_mv	AT yhchang trackingtheinfluenceofcloudcondensationnucleionsummerdiurnalprecipitatingsystemsovercomplextopographyintaiwan AT wtchen trackingtheinfluenceofcloudcondensationnucleionsummerdiurnalprecipitatingsystemsovercomplextopographyintaiwan AT cmwu trackingtheinfluenceofcloudcondensationnucleionsummerdiurnalprecipitatingsystemsovercomplextopographyintaiwan AT cmoseley trackingtheinfluenceofcloudcondensationnucleionsummerdiurnalprecipitatingsystemsovercomplextopographyintaiwan AT ccwu trackingtheinfluenceofcloudcondensationnucleionsummerdiurnalprecipitatingsystemsovercomplextopographyintaiwan
_version_	1718426367230476288

Tracking the influence of cloud condensation nuclei on summer diurnal precipitating systems over complex topography in Taiwan

Ejemplares similares