Arid
DOI10.3390/rs10060937
Retrieval of Aerosol Components Using Multi-Wavelength Mie-Raman Lidar and Comparison with Ground Aerosol Sampling
Hara, Yukari1; Nishizawa, Tomoaki2; Sugimoto, Nobuo2; Osada, Kazuo3; Yumimoto, Keiya1; Uno, Itsushi1; Kudo, Rei4; Ishimoto, Hiroshi4
通讯作者Nishizawa, Tomoaki
来源期刊REMOTE SENSING
ISSN2072-4292
出版年2018
卷号10期号:6
英文摘要

We verified an algorithm using multi-wavelength Mie-Raman lidar (MMRL) observations to retrieve four aerosol components (black carbon (BC), sea salt (SS), air pollution (AP), and mineral dust (DS)) with in-situ aerosol measurements, and determined the seasonal variation of aerosol components in Fukuoka, in the western region of Japan. PM2.5, PM10, and mass concentrations of BC and SS components are derived from in-situ measurements. MMRL provides the aerosol extinction coefficient (), particle linear depolarization ratio (), backscatter coefficient (), and lidar ratio (S) at 355 and 532 nm, and the attenuated backscatter coefficient ((att)) at 1064 nm. We retrieved vertical distributions of extinction coefficients at 532 nm for four aerosol components (BC, SS, AP, and DS) using 1(532) + 1(532) + 1(att,1064) + 1(532) data of MMRL. The retrieved extinction coefficients of the four aerosol components at 532 nm were converted to mass concentrations using the theoretical computed conversion factor assuming the prescribed size distribution, particle shape, and refractive index for each aerosol component. MMRL and in-situ measurements confirmed that seasonal variation of aerosol optical properties was affected by internal/external mixing of various aerosol components, in addition to hygroscopic growth of water-soluble aerosols. MMRL overestimates BC mass concentration compared to in-situ observation using the pure BC model. This overestimation was reduced drastically by introducing the internal mixture model of BC and water-soluble substances (Core-Gray Shell (CGS) model). This result suggests that considering the internal mixture of BC and water-soluble substances is essential for evaluating BC mass concentration in this area. Systematic overestimation of BC mass concentration was found during summer, even when we applied the CGS model. The observational facts based on in-situ and MMRL measurements suggested that misclassification of AP as CGS particles was due to underestimation of relative humidity (RH) by the numerical model in lidar analysis, as well as mismatching of the optical models of AP and CGS assumed in the retrieval with aerosol properties in the actual atmosphere. The time variation of lidar-derived SS was generally consistent with in-situ measurement; however, we found some overestimation of SS during dust events. The cause of this SS overestimation is mainly due to misclassifying internally mixing DS as SS, implying that to consider internal mixing between DS and water-soluble substances leads to better estimation. The time-variations of PM2.5 and PM10 generally showed good agreement with in-situ measurement although lidar-derived PM2.5 and PM10 overestimated in dust events.


英文关键词Raman lidar mixing state of aerosols aerosols air pollution aerosols mineral dust black carbon marine aerosols
类型Article
语种英语
国家Japan
收录类别SCI-E
WOS记录号WOS:000436561800131
WOS关键词SPECTRAL-RESOLUTION LIDAR ; OPTICAL-PROPERTIES ; SEASONAL-VARIATION ; MODEL ANALYSIS ; DESERT DUST ; ASIAN DUST ; EXTINCTION ; JAPAN ; CLASSIFICATION ; BACKSCATTER
WOS类目Remote Sensing
WOS研究方向Remote Sensing
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212631
作者单位1.Kyushu Univ, Res Inst Appl Mech, 6-1 Kasuga Pk, Fukuoka 8168580, Japan;
2.Natl Inst Environm Studies, Ctr Environm Measurement & Anal, 16-2 Onogawa, Tsukuba, Ibaraki 3058506, Japan;
3.Nagoya Univ, Grad Sch Environm Studies, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan;
4.Japan Meteorol Agcy, Meteorol Res Inst, 1-1 Nagamine, Tsukuba, Ibaraki 3050052, Japan
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Hara, Yukari,Nishizawa, Tomoaki,Sugimoto, Nobuo,et al. Retrieval of Aerosol Components Using Multi-Wavelength Mie-Raman Lidar and Comparison with Ground Aerosol Sampling[J],2018,10(6).
APA Hara, Yukari.,Nishizawa, Tomoaki.,Sugimoto, Nobuo.,Osada, Kazuo.,Yumimoto, Keiya.,...&Ishimoto, Hiroshi.(2018).Retrieval of Aerosol Components Using Multi-Wavelength Mie-Raman Lidar and Comparison with Ground Aerosol Sampling.REMOTE SENSING,10(6).
MLA Hara, Yukari,et al."Retrieval of Aerosol Components Using Multi-Wavelength Mie-Raman Lidar and Comparison with Ground Aerosol Sampling".REMOTE SENSING 10.6(2018).
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