Retrieving instantaneous extinction of aerosol undetected by the CALIPSO layer detection algorithm

Mao, Feiyue; Shi, Ruixing; Rosenfeld, Daniel; Pan, Zengxin; Zang, Lin; Zhu, Yannian; Lu, Xin

doi:https://doi.org/10.5194/acp-22-10589-2022

Articles | Volume 22, issue 16

https://doi.org/10.5194/acp-22-10589-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-10589-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 16

Research article

|

19 Aug 2022

Research article |

| 19 Aug 2022

Retrieving instantaneous extinction of aerosol undetected by the CALIPSO layer detection algorithm

Feiyue Mao, Ruixing Shi, Daniel Rosenfeld, Zengxin Pan, Lin Zang, Yannian Zhu, and Xin Lu

Data sets

An evaluation of the SAGE III version 4 aerosol extinction coefficient and water vapor data products (https://asdc.larc.nasa.gov/project/SAGE III-ISS) L. W. Thomason, J. R. Moore, M. C. Pitts, J. M. Zawodny, and E. W. Chiou https://doi.org/10.5194/acp-10-2159-2010

A global 3D view of aerosols and clouds (https://asdc.larc.nasa.gov/project/CALIPSO) D. M. Winker, J. Pelon, J. A. Coakley Jr., S. A. Ackerman, R. J. Charlson, P. R. Colarco, P. Flamant, Q. Fu, R. M. Hoff, C. Kittaka, T. L. Kubar, H. Le Treut, M. P. Mccormick, G. Mégie, L. Poole, K. Powell, C. Trepte, M. A. Vaughan, and B. A. Wielicki https://doi.org/10.1175/2010BAMS3009.1

Short summary

Previous studies generally ignored the faint aerosols undetected by the CALIPSO layer detection algorithm because they are too optically thin. Here, we retrieved the faint aerosol extinction based on instantaneous CALIPSO observations with the constraint of SAGE data. The correlation and normalized root-mean-square error of the retrievals with independent SAGE data are 0.66 and 100.6 %, respectively. The minimum retrieved extinction at night can be extended to 10^-4 km^-1 with 125 % uncertainty.