气候变化领域集成服务门户(CCPortal): Microphysical processes producing high ice water contents (HIWCs) in tropical convective clouds during the HAIC-HIWC field campaign: dominant role of secondary ice production

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DOI	10.5194/acp-22-2365-2022
	Microphysical processes producing high ice water contents (HIWCs) in tropical convective clouds during the HAIC-HIWC field campaign: dominant role of secondary ice production
	Huang, Yongjie; Wu, Wei; McFarquhar, Greg M.; Xue, Ming; Morrison, Hugh; Milbrandt, Jason; Korolev, Alexei, V; Hu, Yachao; Qu, Zhipeng; Wolde, Mengistu; Cuong Nguyen; Schwarzenboeck, Alfons; Heckman, Ivan
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	2365
结束页码	2384
卷号	22 期号:4 页码:20
英文摘要	High ice water content (HIWC) regions in tropical deep convective clouds, composed of high concentrations of small ice crystals, were not reproduced by Weather Research and Forecasting (WRF) model simulations at 1 km horizontal grid spacing using four different bulk microphysics schemes (i.e., the WRF single-moment 6-class microphysics scheme (WSM6), the Morrison scheme and the Predicted Particle Properties (P3) scheme with one- and two-ice options) for conditions encountered during the High Altitude Ice Crystals (HAIC) and HIWC experiment. Instead, overestimates of radar reflectivity and underestimates of ice number concentrations were realized. To explore formation mechanisms for large numbers of small ice crystals in tropical convection, a series of quasi-idealized WRF simulations varying the model resolution, aerosol profile, and representation of secondary ice production (SIP) processes are conducted based on an observed radiosonde released at Cayenne during the HAIC-HIWC field campaign. The P3 two-ice category configuration, which has two free ice categories to represent all ice-phase hydrometeors, is used. Regardless of the horizontal grid spacing or aerosol profile used, without including SIP processes the model produces total ice number concentrations about 2 orders of magnitude less than observed at -10 degrees C and about an order of magnitude less than observed at -30 degrees C but slightly overestimates the total ice number concentrations at -45 degrees C. Three simulations including one of three SIP mechanisms separately (i.e., the Hallett-Mossop mechanism, fragmentation during ice-ice collisions, and shattering of freezing droplets) also do not replicate observed HIWCs, with the results of the simulation including shattering of freezing droplets most closely resembling the observations. The simulation including all three SIP processes produces HIWC regions at all temperature levels, remarkably consistent with the observations in terms of ice number concentrations and radar reflectivity, which is not replicated using the original P3 two-ice category configuration. This simulation shows that primary ice production plays a key role in generating HIWC regions at temperatures <-40 degrees C, shattering of freezing droplets dominates ice particle production in HIWC regions at temperatures between -15 and 0 degrees C during the early stage of convection, and fragmentation during ice-ice collisions dominates at temperatures between -15 and 0 degrees C during the later stage of convection and at temperatures between -40 and -20 degrees C over the whole convection period. This study confirms the dominant role of SIP processes in the formation of numerous small crystals in HIWC regions.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000760852600001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273240
作者单位	University of Oklahoma System; University of Oklahoma - Norman; University of Oklahoma System; University of Oklahoma - Norman; University of Oklahoma System; University of Oklahoma - Norman; National Center Atmospheric Research (NCAR) - USA; Environment & Climate Change Canada; Environment & Climate Change Canada; Peking University; National Research Council Canada; Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU); Universite Clermont Auvergne (UCA)
推荐引用方式 GB/T 7714	Huang, Yongjie,Wu, Wei,McFarquhar, Greg M.,et al. Microphysical processes producing high ice water contents (HIWCs) in tropical convective clouds during the HAIC-HIWC field campaign: dominant role of secondary ice production[J],2022,22(4):20.
APA	Huang, Yongjie.,Wu, Wei.,McFarquhar, Greg M..,Xue, Ming.,Morrison, Hugh.,...&Heckman, Ivan.(2022).Microphysical processes producing high ice water contents (HIWCs) in tropical convective clouds during the HAIC-HIWC field campaign: dominant role of secondary ice production.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(4),20.
MLA	Huang, Yongjie,et al."Microphysical processes producing high ice water contents (HIWCs) in tropical convective clouds during the HAIC-HIWC field campaign: dominant role of secondary ice production".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.4(2022):20.