Profiling Dust Mass Concentration in Northwest China Using a Joint Lidar and Sun-Photometer Setting

The satellite-based estimation of the dust mass concentration (DMC) is essential for accurately evaluating the global biogeochemical cycle of the dust aerosols. As for the uncertainties in estimating DMC caused by mixing dust and pollutants and assuming a fixed value for the mass extinction efficien...

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Veröffentlicht in:	Remote sensing (Basel, Switzerland) Switzerland), 2021-03, Vol.13 (6), p.1099
Hauptverfasser:	Wang, Tianhe, Han, Ying, Hua, Wenli, Tang, Jingyi, Huang, Jianping, Zhou, Tian, Huang, Zhongwei, Bi, Jianrong, Xie, Hailing
Format:	Artikel
Sprache:	eng
Schlagworte:	Aerosols Atmospheric aerosols Biogeochemical cycles Boundary layers Climate change Dust dust mass concentration Experiments Field tests identification and separation of dust aerosol Lidar lidar-photometer method mass extinction efficiency Mass extinctions Northwest China Particle size Photometers Planetary boundary layer Pollutants Remote sensing Simulation Troposphere Uncertainty
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Zusammenfassung:	The satellite-based estimation of the dust mass concentration (DMC) is essential for accurately evaluating the global biogeochemical cycle of the dust aerosols. As for the uncertainties in estimating DMC caused by mixing dust and pollutants and assuming a fixed value for the mass extinction efficiency (MEE), a classic lidar-photometer method is employed to identify and separate the dust from pollutants, obtain the dust MEE, and evaluate the effect of the above uncertainties, during five dust field experiments in Northwest China. Our results show that this method is effective for continental aerosol mixtures consisting of dust and pollutants. It is also seen that the dust loading mainly occurred in the free troposphere (
ISSN:	2072-4292 2072-4292
DOI:	10.3390/rs13061099