气候变化领域集成服务门户(CCPortal): Mexican agricultural soil dust as a source of ice nucleating particles

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DOI	10.5194/acp-22-6435-2022
	Mexican agricultural soil dust as a source of ice nucleating particles
	Pereira, Diana L.; Gavilan, Irma; Letechipia, Consuelo; Raga, Graciela B.; Puig, Teresa Pi; Mugica-Alvarez, Violeta; Alvarez-Ospina, Harry; Rosas, Irma; Martinez, Leticia; Salinas, Eva; Quintana, Erika T.; Rosas, Daniel; Ladino, Luis A.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	6435
结束页码	6447
卷号	22 期号:10 页码:13
英文摘要	Agricultural soil erosion, both mechanical and eolic, may impact cloud processes, as some aerosol particles are able to facilitate ice crystal formation. Given the large agricultural sector in Mexico, this study investigates the ice nucleating abilities of agricultural dust collected at different sites and generated in the laboratory. The immersion freezing mechanism of ice nucleation was simulated in the laboratory via the Universidad Nacional Autonoma de Mexico (UNAM) microorifice uniform deposit impactor (MOUDI) droplet freezing technique (DFT), i.e., UNAM-MOUDI-DFT. The results show that agricultural dust from the Mexican territory promote ice formation in the temperature range from -11.8 to -34.5 degrees C, with ice nucleating particle (INP) concentrations between 0.11 and 41.8 L-1. Furthermore, aerosol samples generated in the laboratory are more efficient than those collected in the field, with T-50 values (i.e., the temperature at which 50 % of the droplets freeze) higher by more than 2.9 degrees C. Mineralogical analysis indicated a high concentration of feldspars, i.e., K-feldspar and plagioclase (> 40 %), in most of the aerosol and soil samples, with K-feldspar significantly correlated with the T50 of particles with aerodynamic diameters between 1.8 and 3.2 mu m Similarly, the organic carbon (OC) was correlated with the ice nucleation efficiency of aerosol samples from 3.2 to 5.6 and from 1.0 to 1.8 mu m. Finally, a decrease in INP efficiency after heating the samples at 300 degrees C for 2 h indicates that the organic matter from agricultural soils plays a predominant role in the ice nucleating abilities of this type of aerosol sample.
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:000797401800001
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/273714
作者单位	Universidad Nacional Autonoma de Mexico; Universidad Nacional Autonoma de Mexico; Universidad Nacional Autonoma de Mexico; Universidad Autonoma de Zacatecas; Universidad Nacional Autonoma de Mexico; Universidad Nacional Autonoma de Mexico; Universidad Autonoma Metropolitana - Mexico; Universidad Nacional Autonoma de Mexico; Instituto Politecnico Nacional - Mexico; Universidad Autonoma de Yucatan; Centre National de la Recherche Scientifique (CNRS); UDICE-French Research Universities; Universite Paris Cite; Universite Paris-Est-Creteil-Val-de-Marne (UPEC)
推荐引用方式 GB/T 7714	Pereira, Diana L.,Gavilan, Irma,Letechipia, Consuelo,et al. Mexican agricultural soil dust as a source of ice nucleating particles[J],2022,22(10):13.
APA	Pereira, Diana L..,Gavilan, Irma.,Letechipia, Consuelo.,Raga, Graciela B..,Puig, Teresa Pi.,...&Ladino, Luis A..(2022).Mexican agricultural soil dust as a source of ice nucleating particles.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(10),13.
MLA	Pereira, Diana L.,et al."Mexican agricultural soil dust as a source of ice nucleating particles".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.10(2022):13.