Articles | Volume 17, issue 11
https://doi.org/10.5194/acp-17-7025-2017
https://doi.org/10.5194/acp-17-7025-2017
Technical note
 | 
14 Jun 2017
Technical note |  | 14 Jun 2017

Technical note: Fu–Liou–Gu and Corti–Peter model performance evaluation for radiative retrievals from cirrus clouds

Simone Lolli, James R. Campbell, Jasper R. Lewis, Yu Gu, and Ellsworth J. Welton

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Berry, E. and Mace, G. G.: Cloud properties and radiative effects of the Asian summer monsoon derived from A-Train data, J. Geophys. Res.-Atmos., 119, 9492–9508, https://doi.org/10.1002/2014JD021458, 2014.
Bourgeois, Q., Ekman, A. M. L., Igel, M. R., and Krejci, R.: Ubiquity and impact of thin mid-level clouds in the tropics, Nat. Commun., 7, 12432, https://doi.org/10.1038/ncomms12432, 2016.
Campbell, J. R., Lolli, S., Lewis, J. R., Gu, Y., and Welton, E. J.: “Daytime Cirrus Cloud Top-of-Atmosphere Radiative Forcing Properties at a Midlatitude Site and their Global Consequence”, J. Appl. Meteorol. Clim., 55, 1667–1679, https://doi.org/10.1175/JAMC-D-15-0217.1, 2016.
Campbell, J. R., Hlavka, D. L., Welton, E. J., Flynn, C. J., Turner, D. D., Spinhirne, J. D., Scott, V. S., and Hwang, I. H.: Aerosol Lidar Observation at Atmospheric Radiation Measurement Program Sites: Instrument and Data Processing, J. Atmos. Ocean. Tech., 19, 431–442, 2002.
Comstock, J. M., Ackerson, T. P., and Mace, G. G.: Cirrus radiative properties in the tropical western pacific, Eleventh ARM Science Team Meeting Proceedings, Atlanta, Georgia, 19–23 March, 2001.
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We compare net TOA radiative forcing between the simplified Corti–Peter (CP) and relatively complex Fu–Liou–Gu models for cirrus clouds observed by NASA MPLNET at Singapore in 2010–11 and Greenbelt, Maryland, in 2012. We find daytime forcing discrepancies up to 65 % between the two, which is greater than previous studies. In some cases, the sign of net TOA daytime forcing also differs. We attribute model differences to numerical simplifications in CP via regression that are not valid globally.
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