Impact of a New Cloud Microphysics Parameterization on the Simulations of Mesoscale Convective Systems in E3SM

Abstract Mesoscale convective systems (MCSs) are one of the most climatically significant forms of convection because of their large role in water and energy cycles. The mesoscale features associated with MCS are difficult to represent in climate models because the relevant dynamics and physics are...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jingyu Wang, Jiwen Fan, Zhe Feng, Kai Zhang, Erika Roesler, Benjamin Hillman, Jacob Shpund, Wuyin Lin, Shaocheng Xie
Formato:	article
Lenguaje:	EN
Publicado:	American Geophysical Union (AGU) 2021
Materias:	mesoscale convective system regionally refined model energy exascale Earth system model predicted particle properties microphysics parameterization MCS tracking Physical geography GB3-5030 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/a93bc9ad2bbc41c1a12f75e7dabc22b2
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:a93bc9ad2bbc41c1a12f75e7dabc22b2
record_format	dspace
spelling	oai:doaj.org-article:a93bc9ad2bbc41c1a12f75e7dabc22b22021-11-30T08:40:32ZImpact of a New Cloud Microphysics Parameterization on the Simulations of Mesoscale Convective Systems in E3SM1942-246610.1029/2021MS002628https://doaj.org/article/a93bc9ad2bbc41c1a12f75e7dabc22b22021-11-01T00:00:00Zhttps://doi.org/10.1029/2021MS002628https://doaj.org/toc/1942-2466Abstract Mesoscale convective systems (MCSs) are one of the most climatically significant forms of convection because of their large role in water and energy cycles. The mesoscale features associated with MCS are difficult to represent in climate models because the relevant dynamics and physics are absent or poorly represented with coarse model resolution (∼100 km). Using a regionally refined model (RRM) with 0.25° grid spacing embedded in the Energy Exascale Earth System Model (E3SM), we explore the impact of cloud microphysics parameterizations on the simulation of precipitation, particularly MCS precipitation over the contiguous United States. The Predicted Particle Properties (P3) cloud microphysics scheme has been modified and implemented into E3SM to overcome the limitations of the default Morrison and Gettelman (MG2) scheme in which rimed precipitating ice particles (graupel/hail) are absent and frozen particles are artificially partitioned into cloud ice and snow. We show that P3 improves the simulation of precipitation statistics including frequency distribution compared with MG2 with a limited effect on the diurnal cycle. P3 predicts higher hourly rain rates, resulting in 20% more MCSs and a higher total MCS precipitation (4.4%) compared to MG2, agreeing better with observations. The improvements with P3 mainly result from improved representations of ice microphysics, which not only produces higher rain rates through melting but also leads to a stronger large‐scale ascending motion by releasing more latent heating. This study suggests that improving microphysics parameterization is important for simulating MCS precipitation as future climate model resolutions continue to increase.Jingyu WangJiwen FanZhe FengKai ZhangErika RoeslerBenjamin HillmanJacob ShpundWuyin LinShaocheng XieAmerican Geophysical Union (AGU)articlemesoscale convective systemregionally refined modelenergy exascale Earth system modelpredicted particle propertiesmicrophysics parameterizationMCS trackingPhysical geographyGB3-5030OceanographyGC1-1581ENJournal of Advances in Modeling Earth Systems, Vol 13, Iss 11, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	mesoscale convective system regionally refined model energy exascale Earth system model predicted particle properties microphysics parameterization MCS tracking Physical geography GB3-5030 Oceanography GC1-1581
spellingShingle	mesoscale convective system regionally refined model energy exascale Earth system model predicted particle properties microphysics parameterization MCS tracking Physical geography GB3-5030 Oceanography GC1-1581 Jingyu Wang Jiwen Fan Zhe Feng Kai Zhang Erika Roesler Benjamin Hillman Jacob Shpund Wuyin Lin Shaocheng Xie Impact of a New Cloud Microphysics Parameterization on the Simulations of Mesoscale Convective Systems in E3SM
description	Abstract Mesoscale convective systems (MCSs) are one of the most climatically significant forms of convection because of their large role in water and energy cycles. The mesoscale features associated with MCS are difficult to represent in climate models because the relevant dynamics and physics are absent or poorly represented with coarse model resolution (∼100 km). Using a regionally refined model (RRM) with 0.25° grid spacing embedded in the Energy Exascale Earth System Model (E3SM), we explore the impact of cloud microphysics parameterizations on the simulation of precipitation, particularly MCS precipitation over the contiguous United States. The Predicted Particle Properties (P3) cloud microphysics scheme has been modified and implemented into E3SM to overcome the limitations of the default Morrison and Gettelman (MG2) scheme in which rimed precipitating ice particles (graupel/hail) are absent and frozen particles are artificially partitioned into cloud ice and snow. We show that P3 improves the simulation of precipitation statistics including frequency distribution compared with MG2 with a limited effect on the diurnal cycle. P3 predicts higher hourly rain rates, resulting in 20% more MCSs and a higher total MCS precipitation (4.4%) compared to MG2, agreeing better with observations. The improvements with P3 mainly result from improved representations of ice microphysics, which not only produces higher rain rates through melting but also leads to a stronger large‐scale ascending motion by releasing more latent heating. This study suggests that improving microphysics parameterization is important for simulating MCS precipitation as future climate model resolutions continue to increase.
format	article
author	Jingyu Wang Jiwen Fan Zhe Feng Kai Zhang Erika Roesler Benjamin Hillman Jacob Shpund Wuyin Lin Shaocheng Xie
author_facet	Jingyu Wang Jiwen Fan Zhe Feng Kai Zhang Erika Roesler Benjamin Hillman Jacob Shpund Wuyin Lin Shaocheng Xie
author_sort	Jingyu Wang
title	Impact of a New Cloud Microphysics Parameterization on the Simulations of Mesoscale Convective Systems in E3SM
title_short	Impact of a New Cloud Microphysics Parameterization on the Simulations of Mesoscale Convective Systems in E3SM
title_full	Impact of a New Cloud Microphysics Parameterization on the Simulations of Mesoscale Convective Systems in E3SM
title_fullStr	Impact of a New Cloud Microphysics Parameterization on the Simulations of Mesoscale Convective Systems in E3SM
title_full_unstemmed	Impact of a New Cloud Microphysics Parameterization on the Simulations of Mesoscale Convective Systems in E3SM
title_sort	impact of a new cloud microphysics parameterization on the simulations of mesoscale convective systems in e3sm
publisher	American Geophysical Union (AGU)
publishDate	2021
url	https://doaj.org/article/a93bc9ad2bbc41c1a12f75e7dabc22b2
work_keys_str_mv	AT jingyuwang impactofanewcloudmicrophysicsparameterizationonthesimulationsofmesoscaleconvectivesystemsine3sm AT jiwenfan impactofanewcloudmicrophysicsparameterizationonthesimulationsofmesoscaleconvectivesystemsine3sm AT zhefeng impactofanewcloudmicrophysicsparameterizationonthesimulationsofmesoscaleconvectivesystemsine3sm AT kaizhang impactofanewcloudmicrophysicsparameterizationonthesimulationsofmesoscaleconvectivesystemsine3sm AT erikaroesler impactofanewcloudmicrophysicsparameterizationonthesimulationsofmesoscaleconvectivesystemsine3sm AT benjaminhillman impactofanewcloudmicrophysicsparameterizationonthesimulationsofmesoscaleconvectivesystemsine3sm AT jacobshpund impactofanewcloudmicrophysicsparameterizationonthesimulationsofmesoscaleconvectivesystemsine3sm AT wuyinlin impactofanewcloudmicrophysicsparameterizationonthesimulationsofmesoscaleconvectivesystemsine3sm AT shaochengxie impactofanewcloudmicrophysicsparameterizationonthesimulationsofmesoscaleconvectivesystemsine3sm
_version_	1718406702348369920

Impact of a New Cloud Microphysics Parameterization on the Simulations of Mesoscale Convective Systems in E3SM

Ejemplares similares