Potential impact of carbonaceous aerosol on the upper troposphere and lower stratosphere (UTLS) and precipitation during Asian summer monsoon in a global model simulation

Fadnavis, Suvarna; Kalita, Gayatry; Kumar, K. Ravi; Gasparini, Blaž; Li, Jui-Lin Frank

doi:https://doi.org/10.5194/acp-17-11637-2017

Articles | Volume 17, issue 18

https://doi.org/10.5194/acp-17-11637-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-17-11637-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 18

Research article

|

28 Sep 2017

Research article |

| 28 Sep 2017

Potential impact of carbonaceous aerosol on the upper troposphere and lower stratosphere (UTLS) and precipitation during Asian summer monsoon in a global model simulation

Suvarna Fadnavis, Gayatry Kalita, K. Ravi Kumar, Blaž Gasparini, and Jui-Lin Frank Li

Supplement

https://doi.org/10.5194/acp-17-11637-2017-supplement

Data sets

TRMM data NASA https://disc2.gesdisc.eosdis.nasa.gov/data/TRMM_L3/TRMM_3B42.7/

AEROCOM emissions data AeroCom http://aerocom.met.no/emissions.html

CALIPSO and CloudSat measurements Cloudsat http://www.cloudsat.cira.colostate.edu/data-products/

Aircraft measurements for August-September 2009 at Guwahati P. R. C. Rahul, R. L. Bhawar, D. C. Ayantika, A. S. Panicker, P. D., Safai, V. Tharaprabhakaran, B. Padmakumari, and M. P. Raju https://doi.org/10.1038/srep03670

Balloon-borne measurements on March~2010 at Hyderabad S. S. Babu, K. K. Moorthy, R. K. Manchanda, P. R. Sinha, S. K. Satheesh,D. P. Vajja, S. Srinivasan, and V. H. A. Kumar https://doi.org/10.1029/2011GL046654

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Short summary

In this study, the model simulations show that monsoon convection over the Bay of Bengal, the South China Sea and southern flanks of the Himalayas transports Asian carbonaceous aerosol into the UTLS. Carbonaceous aerosol induces enhancement in heating rate, vertical velocity and water vapor transport in the UTLS. Doubling of carbonaceous aerosols creates an anomalous warming over the TP. It generates monsoon Hadley circulation and thus increases precipitation over India and northeast China.