Articles | Volume 19, issue 18
Research article
24 Sep 2019
Research article |  | 24 Sep 2019

Assessment of regional aerosol radiative effects under the SWAAMI campaign – Part 1: Quality-enhanced estimation of columnar aerosol extinction and absorption over the Indian subcontinent

Harshavardhana Sunil Pathak, Sreedharan Krishnakumari Satheesh, Ravi Shankar Nanjundiah, Krishnaswamy Krishna Moorthy, Sivaramakrishnan Lakshmivarahan, and Surendran Nair Suresh Babu

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Assessment of regional aerosol radiative effects under the SWAAMI campaign – Part 2: Clear-sky direct shortwave radiative forcing using multi-year assimilated data over the Indian subcontinent
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Subject: Aerosols | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Adhikary, B., Kulkarni, S., Dallura, A., Tang, Y., Chai, T., Leung, L., Qian, Y., Chung, C., Ramanathan, V., and Carmichael, G.: A regional scale chemical transport modeling of Asian aerosols with data assimilation of AOD observations using optimal interpolation technique, Atmos. Environ., 42, 8600–8615, 2008. a, b, c
Babu, S. S. and Moorthy, K. K.: Aerosol black carbon over a tropical coastal station in India, Geophys. Res. Lett., 29, 13-1–13-4,, 2002. a
Babu, S. S., Moorthy, K. K., and Satheesh, S.: Aerosol black carbon over Arabian Sea during intermonsoon and summer monsoon seasons, Geophys. Res. Lett., 31, L06104,, 2004. a, b
Babu, S. S., Moorthy, K. K., Manchanda, R. K., Sinha, P. R., Satheesh, S., Vajja, D. P., Srinivasan, S., and Kumar, V.: Free tropospheric black carbon aerosol measurements using high altitude balloon: do BC layers build “their own homes” up in the atmosphere?, Geophys. Res. Lett., 38, L08803,, 2011. a, b, c, d
Babu, S. S., Manoj, M., Moorthy, K. K., Gogoi, M. M., Nair, V. S., Kompalli, S. K., Satheesh, S., Niranjan, K., Ramagopal, K., Bhuyan, P., and Singh, D.: Trends in aerosol optical depth over Indian region: Potential causes and impact indicators, J. Geophys. Res.-Atmos., 118, 11794–11806,, 2013. a, b, c, d
Short summary
We have developed quality-enhanced, gridded datasets for aerosol optical depth (AOD) and absorption AOD by assimilating highly accurate measurements from the dense network of ground-based stations, with respective satellite-retrieved datasets. The assimilated datasets demonstrate improved accuracy and reduced uncertainties as compared to respective satellite products. Thus, these assimilated products emerge as important tools to improve the accuracy of climate impact assessment of aerosols.
Final-revised paper