Articles | Volume 21, issue 10
Atmos. Chem. Phys., 21, 7947–7961, 2021
https://doi.org/10.5194/acp-21-7947-2021
Atmos. Chem. Phys., 21, 7947–7961, 2021
https://doi.org/10.5194/acp-21-7947-2021

Research article 25 May 2021

Research article | 25 May 2021

Lidar observations of cirrus clouds in Palau (7°33′ N, 134°48′ E)

Francesco Cairo et al.

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Cited articles

Biavati, G., Di Donfrancesco, G., Cairo, F., and Feist, D. G.: Correction scheme for close-range lidar returns, Appl. Opt., 50, 5872–5882, 2011. a
Bissonnette, L. R.: Lidar and multiple scattering, in: Lidar, Springer, 43–103, 2005. a
Boehm, M. T. and Verlinde, J.: Stratospheric influence on upper tropospheric tropical cirrus, Geophysical Res. Lett., 27, 3209–3212, 2000. a
Bucci, S., Cristofanelli, P., Decesari, S., Marinoni, A., Sandrini, S., Größ, J., Wiedensohler, A., Di Marco, C. F., Nemitz, E., Cairo, F., Di Liberto, L., and Fierli, F.: Vertical distribution of aerosol optical properties in the Po Valley during the 2012 summer campaigns, Atmos. Chem. Phys., 18, 5371–5389, https://doi.org/10.5194/acp-18-5371-2018, 2018. a
Bucci, S., Legras, B., Sellitto, P., D'Amato, F., Viciani, S., Montori, A., Chiarugi, A., Ravegnani, F., Ulanovsky, A., Cairo, F., and Stroh, F.: Deep-convective influence on the upper troposphere–lower stratosphere composition in the Asian monsoon anticyclone region: 2017 StratoClim campaign results, Atmos. Chem. Phys., 20, 12193–12210, https://doi.org/10.5194/acp-20-12193-2020, 2020. a
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Short summary
A lidar was used in Palau from February–March 2016. Clouds were observed peaking at 3 km below the high cold-point tropopause (CPT). Their occurrence was linked with cold anomalies, while in warm cases, cirrus clouds were restricted to 5 km below the CPT. Thin subvisible cirrus (SVC) near the CPT had distinctive characteristics. They were linked to wave-induced cold anomalies. Back trajectories are mostly compatible with convective outflow, while some distinctive SVC may originate in situ.
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