陆地气溶胶粒子尺度分布的准确描述

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Abstract The size distributions of three main land aerosols (absorbing, neutral and no-absorbing) were analyzed based on aerosol robotic network (AERONET) level 2.0 data. The problems existing in the current descriptions for land aerosol size distributions were pointed out and the more accurate descriptions were proposed. The results showed when aerosol was dominated by fine particles, the relationship between fine mode radius (r_f) and total aerosol optical depth (τ_t) exhibited high correlation, however coarse mode radius (r_c) and τ_t didn't display such good correlation, and the relationship didn't always exhibit positive correlation, they could also exhibit negative correlation for different aerosol types. When fine mode fraction was low, neither r_f and τ_t nor r_c and τ_t exhibited high correlation. r_f and fine mode aerosol optical depth (τ_f) (or r_c and coarse mode aerosol optical depth (τ_c)) always displayed robust correlation with high coefficients, and different from the relationship between r_c and τ_t which can exhibit positive or negative correlation, r_c and τ_c always exhibited robust negative correlation. Finally, the influences of using the new description in satellite aerosol retrieval were discussed.

Key words： aerosols AERONET aerosol size distribution aerosol modal

Received: 27 May 2019

PACS:	X511
	TP79
	P407

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	WANG Jia-cheng
	CUI Sheng-cheng
	ZHU Yong

Cite this article:

WANG Jia-cheng,CUI Sheng-cheng,ZHU Yong. The more accurate descriptions of land aerosol size distribution[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(11): 4538-4545.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I11/4538

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