Optimization of the Polarized Imaging Nephelometer (PI-Neph) for continuous monitoring of multiwavelength aerosol phase functions in support of space polarimetry missions

Bazo, E.; Martins, J.V.; Perez-Ramirez, D.; Valenzuela, A.; Titos, G.; Cazorla, A.; Fuertes, D.; Weiss, M.; Turpie, A.; Li, C.; García-Izquierdo, F.J.; Foyo-Moreno, I.; Alados-Arboledas, L.; Olmo, F.J.

doi:10.1016/j.atmosenv.2023.120181

Atmospheric Environment

2024

DOI: 10.1016/j.atmosenv.2023.120181

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Optimization of the Polarized Imaging Nephelometer (PI-Neph) for continuous monitoring of multiwavelength aerosol phase functions in support of space polarimetry missions

E. Bazo,

J.V. Martins,

D. Perez-Ramirez

et al.

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Comparison of diurnal aerosol products retrieved from combinations of micro-pulse lidar and sun photometer observations over the KAUST observation site

Lopatin,

Dubovik,

Stenchikov

et al. 2024

Atmos. Meas. Tech.

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Abstract. This study focuses on the comparison of aerosol columnar aerosol optical depth (AOD) and lidar ratios together with vertical profiles of aerosol extinction and backscatter at 532 nm retrieved over the King Abdullah University of Science and Technology (KAUST) campus observation site for the period of 2019–2022 using the Generalized Retrieval of Atmosphere and Surface Properties (GRASP) and Micro-Pulse Lidar Network (MPLNET) approaches. An emphasis is placed on independent analysis of daylight and nighttime retrievals to estimate how strongly the differences in the assumptions of both methods made in the absence of nighttime AOD observations influence the retrieval results. Additionally, two aerosol products provided by GRASP excluding and including the volume depolarization observations at 532 nm provided by MPLNET are analyzed to estimate the potential benefits of usage of depolarization data in aerosol profile retrievals. Overall, both columnar and vertical MPLNET and GRASP products demonstrated a better agreement for daytime retrievals for the GRASP product that excluded the depolarization information. At the same time, inclusion of the volume depolarization observations improved the agreement between MPLNET- and GRASP-estimated values at nighttime, both columnar and vertical. In addition, estimated values of daytime extinction profiles at ground level were compared to assess the impact of the assumption of a constant aerosol vertical distribution in the cutoff zone of lidar observations implied in GRASP. The values estimated by GRASP demonstrated a good agreement with MPLNET, for retrievals both including and excluding volume depolarization information. A seasonal variability in the diurnal cycle of aerosol properties estimated by GRASP over the KAUST site for the period 2019–2022 is presented, analyzed and discussed.

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Comparison of diurnal aerosol products retrieved from combinations of micro-pulse lidar and sun photometer observations over the KAUST observation site

Lopatin,

Dubovik,

Stenchikov

et al. 2024

Atmos. Meas. Tech.

View full text Add to dashboard Cite

show abstract

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Optimization of the Polarized Imaging Nephelometer (PI-Neph) for continuous monitoring of multiwavelength aerosol phase functions in support of space polarimetry missions

Cited by 1 publication

References 78 publications

Comparison of diurnal aerosol products retrieved from combinations of micro-pulse lidar and sun photometer observations over the KAUST observation site

Comparison of diurnal aerosol products retrieved from combinations of micro-pulse lidar and sun photometer observations over the KAUST observation site

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