Articles | Volume 8, issue 11
https://doi.org/10.5194/amt-8-4573-2015
https://doi.org/10.5194/amt-8-4573-2015
Research article
 | 
02 Nov 2015
Research article |  | 02 Nov 2015

Explaining darker deep convective clouds over the western Pacific than over tropical continental convective regions

B.-J. Sohn, M.-J. Choi, and J. Ryu

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Cited articles

Aumann, H. H., Pagano, T., and Hofstadter, M.: Observations of deep convective clouds as stable reflected light standard for climate research: AIRS evaluation, P. Soc. Photo.-Opt. Ins., 6684, 668410, https://doi.org/10.1117/12.734599, 2007.
Battaglia, A. and Simmer, C.: How does multiple scattering affect the spaceborne W-band radar measurements at ranges close to and crossing the surface-range?, IEEE T. Geosci. Remote, 46, 1644–1651, https://doi.org/10.1109/TGRS.2008.916085, 2008.
Chung, E. S., Sohn, B. J., Schmetz, J., and Koenig, M.: Diurnal variation of upper tropospheric humidity and its relations to convective activities over tropical Africa, Atmos. Chem. Phys., 7, 2489–2502, https://doi.org/10.5194/acp-7-2489-2007, 2007.
Doelling, D. R., Morstad, D., Scarino, B. R., Bhatt, R., and Gopalan, A.: The characterization of deep convective clouds as an invariant calibration target and as a visible calibration technique, IEEE T. Geosci. Remote, 51, 1147–1159, https://doi.org/10.1109/TGRS.2012.2225066, 2013.
Ham, S.-H. and Sohn, B. J.: Assessment of the calibration performance of satellite visible channels using cloud targets: application to Meteosat-8/9 and MTSAT-1R, Atmos. Chem. Phys., 10, 11131–11149, https://doi.org/10.5194/acp-10-11131-2010, 2010.
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Short summary
This study attempted to explain why deep convective clouds (DCCs) over the western Pacific are generally darker than those found over tropical African and South American land regions over the tropics. It was noted that smaller ice water path of the DCC over the western Pacific is mainly responsible for smaller reflectivity there. Findings further suggest how DCC criteria are set up for selecting the targets for the solar channel calibration.