Aerosol-enhanced high precipitation events near the Himalayan foothills

Choudhury, Goutam; Tyagi, Bhishma; Vissa, Naresh Krishna; Singh, Jyotsna; Sarangi, Chandan; Tripathi, Sachchida Nand; Tesche, Matthias

doi:https://doi.org/10.5194/acp-20-15389-2020

Articles | Volume 20, issue 23

https://doi.org/10.5194/acp-20-15389-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-15389-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 23

Research article

|

11 Dec 2020

Research article |

| 11 Dec 2020

Aerosol-enhanced high precipitation events near the Himalayan foothills

Goutam Choudhury, Bhishma Tyagi, Naresh Krishna Vissa, Jyotsna Singh, Chandan Sarangi, Sachchida Nand Tripathi, and Matthias Tesche

Supplement

https://doi.org/10.5194/acp-20-15389-2020-supplement

Data sets

MODIS Atmosphere L3 Daily Product S. Platnick, P. Hubanks, K. Meyer, and M. D. King https://doi.org/10.5067/MODIS/MOD08_D3.061

TRMM (TMPA) Rainfall Estimate L3 3 hour 0.25 degree x 0.25 degree V7 TRMM (Tropical Rainfall Measuring Mission) https://doi.org/10.5067/TRMM/TMPA/3H/7

MERRA-2 inst3_2d_gas_Nx: 2d,3-Hourly,Instantaneous,Single-Level,Assimilation,Aerosol Optical Depth Analysis V5.12.4 GMAO (Global Modeling and Assimilation Office) https://doi.org/10.5067/HNGA0EWW0R09

MERRA-2 inst3_3d_asm_Np: 3d,3-Hourly,Instantaneous,Pressure-Level,Assimilation,Assimilated Meteorological Fields V5.12.4 GMAO (Global Modeling and Assimilation Office) https://doi.org/10.5067/QBZ6MG944HW0

ERA-Interim Project ECMWF (European Centre for Medium-Range Weather Forecasts) https://doi.org/10.5065/D6CR5RD9

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Short summary

This study uses 17 years (2001–2017) of observed rain rate, aerosol optical depth (AOD), meteorological reanalysis fields and outgoing long-wave radiation to investigate high precipitation events at the foothills of the Himalayas. Composite analysis of all data sets for high precipitation events (daily rainfall > 95th percentile) indicates clear and robust associations between high precipitation events, high aerosol loading and high moist static energy values.