6th International SKYNET Workshop 2021
Japan (online)
November 9-11, 2021
■Day 1, November 9 (Tue)UTC(JST)
9:00 (18:00) Welcome & Logi: Hitoshi Irie (Chiba Univ.)
Project aspect [Chair: P. Khatri ]9:10 (18:10) On the issues and prospects of the SKYNET project*Teruyuki Nakajima and the International SKYNET committee
9:25 (18:25) Current status and progress on International SKYNET Data Center (ISDC)*Tomoaki Nishizawa and Akiko Higurashi
9:40 (18:40) Models, In situ, and Remote sensing of Aerosols (MIRA): Formation of anInternational Working Group*Greg Schuster and Chip Trepte
9:55 (18:55) Metrology of Aerosol optical properties; the MAPP project*Stelios Kazadzis, Natalia Kouremeti, Saulius Nevas, and Julian Grobner
10:10 (19:10) Development of international air quality and sky research remote sensing (A-SKY)
network*Hitoshi Irie, Alessandro Damiani, Toshihiko Takemura, Thanawat
Jarupongsakul, Manish Naja, and Sang-Woo Kim
10:25 (19:25)(Break)COVID-19 [Chair: J. Bi ]10:40 (19:40) Use of sun-photometry to investigate the COVID-19 lockdown effects on theatmospheric composition in various Italian urban sites*Monica Campanelli, A.M. Iannarelli, G. Mevi, S. Casadio, H. Diémoz, S. Finardi,A. Dinoi, E. Castelli, A. di Sarra, A. Di Bernardino, G. Casasanta, C. Bassani, A.M.
Siani, M. Cacciani, F. Barnaba, L. Di Liberto, and S. Argentini
10:55 (19:55) Peculiar COVID-19 effects in the Greater Tokyo Area revealed by the variability intropospheric gases and light- absorbing aerosols*Alessandro Damiani, Hitoshi Irie, Dmitry Belikov, Tamio Takamura, Syedul H. M.
Hoque, and Raul R. Cordero
11:10 (20:10)
11:15 (20:15)

Group photo(Break)

11:25 (20:25)
To
12:55 (21:55)

Social gathering @ Zoom

■Day 2, November 10 (Wed)

Algorithm & QA/QC [Chair: Z. Wang ]UTC(JST)
9:00 (18:00) Development of Skyrad pack MRI version 2*Rei Kudo, Henri Diémoz, Victor Estellés, Monica Campanelli, Masahiro Momoi,
Franco Marenco, Claire L. Ryder, Osamu Ijima, Akihiro Uchiyama, Kouichi
Nakashima, Akihiro Yamazaki, Ryoji Nagasawa, Nozomu Ohkawara, HarumaIshida, Yasutaka Jin, and Tomoaki Nishizawa
9:15 (18:15) PSTAR/Pn-IMS: Efficient calculation of sky radiative intensity including thepolarization effect in moderately thick atmospheres using a truncation
approximation*Masahiro Momoi, Hitoshi Irie, Teruyuki Nakajima, and Miho Sekiguchi
9:30 (18:30) Long-Term Evaluation of Skyrad pack MRI Version 2 Retrievals and Estimation ofthe Vertical Profile of the Short-Wave Aerosol Radiative Effect at an Alpine Site
Gabriele Fasano, *Henri Diémoz, Monica Campanelli, Victor Estellés, Rei Kudo,and Anna Maria Siani
9:45 (18:45) 13 years of Aerosol measurements with PFR and CIMEL sun-photometers at
Davos: Aerosol optical depth and trend analysis comparison*Angelos Karanikolas, Natalia Kouremeti, Julian Gröbner, Luca Egli, and Stelios
Kazadzis
10:00 (19:00)(Break)Air quality in East Asia 1 [Chair: T. Dai ]10:15 (19:15) Estimating contributions of black and brown carbon to solar absorption fromskyradiometer measurements*Sang-Woo Kim and Chaeyoo Cho
10:30 (19:30) Dependence of aerosol light scattering on the chemical composition and size ofparticles in Beijing haze
Qingxia Ma, Yunfei Wu, Shenglei Fu, Zhiwei Han, Renjian Zhang, and *DaizhouZhang
10:45 (19:45) Aerosol optical properties at Yonsei University based on the skyradiometermeasurement in 2016-2018*Ja-Ho Koo, Juhee Lee, Dha Hyun Ahn, Sujung Go, and Jhoon Kim
11:00 (20:00) Classifying aerosol types over Japan by k-means clustering from sky-radiometer
observations*Hiroyasu Kobayashi, Hitoshi Irie, Masahiro Momoi, and Takeru Ohno
11:15 (20:15)(Break)Air quality in South Asia 1 [Chair: U. C. Dumka ]11:30 (20:30) Aerosol Black Carbon over India from Satellite (GOSAT-2 CAI-2) and Ground-based(ARFINET) Measurements*Mukunda M Gogoi, S Suresh Babu, Ryoichi Imasu, and Makiko Hashimoto
11:45 (20:45) Climatological aspects of size-resolved column aerosol optical properties over arural site in the southern peninsular India*B.L. Madhavan, M. Venkat Ratnam, A. Sai Krishnaveni, and V. Ravi Kiran
12:00 (21:00) Source Apportionment of Total Suspended Particulate in the Central Himalayan
Region*Rahul Sheoran, Umesh Chandra Dumka, Dimitris G. Kaskaoutis, and Georgios
Grivas12:15 (21:15)
To(Poster Core Time)
13:15 (22:15)

■Day 3, November 11 (Thr)
Cloud [Chair: A. Damiani ]UTC(JST)
9:00 (18:00) Important factors affecting the relationship between sky radiometer and satellite
observed cloud properties*Pradeep Khatri, Tadahiro Hayasaka, Hitoshi Irie, and Tamio Takamura
9:15 (18:15) Discrimination of the cloud cover from ground-based sky images*Takashi Y. Nakajima, Takashi M. Nagao, Nagai Shin, Kanta Shimizu, and Tsukasa
Eto
9:30 (18:30) Retrieval of cloud top pressure with GF5/DPC satellite measurement polarization
data*Wei Lesi, Husi Letu, and Shang Huazhe
9:45 (18:45) The spectral dependency of the cirrus cloud backscattering by lidar and radarsoundings in SKYNET Hefei Site
*Zhenzhu Wang, Dong Liu, Chenbo Xie, Yingjian Wang, Anatoli Borovoi, andAlexander Konoshonkin
10:00 (19:00)(Break)Air quality in South Asia 2 [Chair: B. L. Madhavan ]10:15 (19:15) Increasing aerosol burden over the foothills of the Himalaya*Shantikumar S. Ningombam, Mugil, S. K., and Umesh Chandra Dumka
10:30 (19:30) Water vapour radiative forcing at high-altitude Himalayan sites*U. C. Dumka, D. G. Kaskaoutis, Pradeep Khatri, and Shantikumar S. Ningombam
10:45 (19:45) Long-term variations of NO2, SO2, HCHO, and CHOCHO over the Himalayanfoothills: Observations from MAX-DOAS, TROPOMI, and GOME-2*Prajjwal Rawat, Manish Naja, H. Irie, Christophe Lerot, and S. Lal
11:00 (20:00)(Break)Air quality in East Asia 2 [Chair: S.-W. Kim ]11:15 (20:15) Dust aerosol optical property and vertical profile in the hinterland of Taklimakan
Desert*Jianrong Bi, Zhengpeng Li, Dapeng Zuo, Fan Yang, Zhongwei Huang, andJianping Huang
11:30 (20:30) Aerosol data assimilation using the ensemble kalman filter*Tie Dai, Yueming Cheng, Daisuke Goto, Hiroshi Murakami, Mayumi Yoshida,
Guangyu Shi, and Teruyuki Nakajima
11:45 (20:45) Lidar ratios determined from CALIOP and ground-based lidars using AODs fromMODIS and sky radiometers as a constraint in East Asia
*Man-Hae Kim, Sang-Woo Kim, Soojin Park, Tomoaki Nishizawa, and AtsushiShimizu
12:00 (21:00) Aerosols direct radiative effect combined ground-based Lidar and Sunphotometer observations: a comparison between haze and dust events in Beijing*Yuanxin Liang, Huizheng Che, Hong Wang, Wenjie Zhang, Lei Li, Yu Zheng, KeGui, Peng Zhang, and Xiaoye Zhang
12:15 (21:15) Closing remark: Teruyuki Nakajima

■Poster1

RSTAR/WV-CKD: Development of the look-up table of the k-distribution in the gas
absorption region around 940 nm for the sky-radiometer data analysis*Masahiro Momoi, Hitoshi Irie, Miho Sekiguchi, Teruyuki Nakajima, and Hideaki Takenaka2On MERRA-2 AOD Data Corrected based on Validation Using Ground-based Observations inPhimai, Thailand*Takeru Ohno, Hitoshi Irie, and Arlindo M da Silva

3Relationship between aerosol concentrations and meteorological factors in Nara basin withground-based optical observations*Misato Kamiya, Mayu Nakagawa, Makoto Kuji

4

The single scattering albedo obtained at Valencia (Spain) from in-situ scattering andabsorption measurements*V. Matos, J. Camarasa, S. Segura, A.R. Esteve, V. Estellés, G. Fasano, H. Diemoz, M.
Campanelli, M.P.Utrillas, and J.A. Martínez-Lozano

5Inter-comparison between the Aerosol Optical Properties Retrieved by Different Inversion
Methods from SKYNET Sky Radiometer Observations over Qionghai and Yucheng in China*Zhe Jiang, Minzheng Duan, Huizheng Che, Wenxing Zhang, Teruyuki, Nakajima, Makiko
Hashimoto, Bin Chen, and Akihiro Yamazaki

6Aerosol and cloud properties over a coastal area from aircraft observations in Zhejiang,
China*Yunfei Che, Jing Zhang, Chuanfeng Zhao, Chungang Fang, Xu Zhou, and Jing Duan

7Aerosol optical properties and lidar ratio retrieved from ground-based sky-radiometer andRaman lidar measurements over an urban site of north-western China*Jingjing Liu, Jingtao Liu, Kailiang Li , Qing Yan, Jun Wang, Fei Gao, Hao Chen, and Dengxin
Hua

8Analysis of aerosol optical characteristics from ground in Beijing and its response toenvironmental factors*Xiaofei Dong, Bin Chen, Akihiro Yamazaki, Akihiro Uchiyama, Rei Kudo, and Guangyu Shi

9Investigating the monthly and diurnal variation of AOD from HSRL measurements in Seoul,Korea*Soojin Park, Sang-Woo Kim, Man-Hae Kim, Robert Holz, and Ralph Kuehn

10

Comparison and analysis of cloud optical properties over beijing based on satellite data andsky radiometer*Wenxin Guo, Huizheng Che, Quanliang Cheng, and Zhisheng Xiao

11

Cloud geolocation estimation from all-sky-view cameras*Wanyi Xie, Yiren Wang, Yingwei Xia, and Dong Liu

12

Retrieval of Cloud Top Parameters from Himawari-8 Measurements*Ri Xu and Husi Letu

13

Retrieval of Surface Solar Radiation from Himawari-8 measurements*Run Ma, Husi Letu, and Takashi Y. Nakajima