Investigating the role of typhoon-induced waves and stratospheric hydration in the formation of tropopause cirrus clouds observed during the 2017 Asian monsoon

Pandit, Amit Kumar; Vernier, Jean-Paul; Fairlie, Thomas Duncan; Bedka, Kristopher M.; Avery, Melody A.; Gadhavi, Harish; Venkat Ratnam, Madineni; Dwivedi, Sanjeev; Amar Jyothi, Kasimahanthi; Wienhold, Frank G.; Vömel, Holger; Liu, Hongyu; Zhang, Bo; Kumar, Buduru Suneel; Dinh, Tra; Jayaraman, Achuthan

doi:https://doi.org/10.5194/acp-24-14209-2024

Articles | Volume 24, issue 24

https://doi.org/10.5194/acp-24-14209-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-14209-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 24

Research article

|

20 Dec 2024

Research article |

| 20 Dec 2024

Investigating the role of typhoon-induced waves and stratospheric hydration in the formation of tropopause cirrus clouds observed during the 2017 Asian monsoon

Amit Kumar Pandit, Jean-Paul Vernier, Thomas Duncan Fairlie, Kristopher M. Bedka, Melody A. Avery, Harish Gadhavi, Madineni Venkat Ratnam, Sanjeev Dwivedi, Kasimahanthi Amar Jyothi, Frank G. Wienhold, Holger Vömel, Hongyu Liu, Bo Zhang, Buduru Suneel Kumar, Tra Dinh, and Achuthan Jayaraman

Supplement

https://doi.org/10.5194/acp-24-14209-2024-supplement

Data sets

ERA5 hourly data on pressure levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.bd0915c6

RSMC Best Track Data Japan Meteorological Agency (JMA) https://www.jma.go.jp/jma/jma-eng/jma-center/rsmc-hp-pub-eg/besttrack.html

MLS/Aura Level 2 Water Vapor (H2O) Mixing Ratio V004 A. Lambert et al. https://doi.org/10.5067/Aura/MLS/DATA2009

Balloon data W. Li https://doi.org/10.6084/m9.figshare.27932037.v1

Trajectory data W. Li https://doi.org/10.6084/m9.figshare.27932082.v1

CALIPSO Lidar Level 2 5 km Cloud Layer, V4-20 NASA/LARC/SD/ASDC https://doi.org/10.5067/CALIOP/CALIPSO/LID_L2_05KMCLAY-STANDARD-V4-20

CALIPSO Lidar Level 2 Cloud Profile, V4-20 NASA/LARC/SD/ASDC https://doi.org/10.5067/CALIOP/CALIPSO/LID_L2_05KMCPRO-STANDARD-V4-20

MLS/Aura Level 2 Relative Humidity With Respect To Ice V004 W. Read and N. Livesey https://doi.org/10.5067/Aura/MLS/DATA2019

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Short summary

This study investigates the formation mechanism of a tropopause cirrus cloud layer observed at extremely cold temperatures over Hyderabad in India during the 2017 Asian summer monsoon using balloon-borne sensors. Ice crystals smaller than 50 µm were found in this optically thin cirrus cloud layer. Combined analysis of back trajectories, satellite, and model data revealed that the formation of this layer was influenced by waves and stratospheric hydration induced by typhoon Hato.