Published August 15, 2000
| Published
Journal Article
Open
Reflectivity variations off the Peru Coast: Evidence for indirect effect of anthropogenic sulfate aerosols on clouds
- Creators
- Kuang, Zhiming
-
Yung, Yuk L.
Chicago
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Abstract
Using reflectivity measurements from the Total Ozone Mapping Spectrometer (TOMS), we show that over the months when stratocumulus clouds are prominent off the Peru Coast, the ultraviolet (UV) reflectance of two marine sites is consistently higher than that of the surroundings. The regions of reflectivity enhancement coincide with large anthropogenic sulfate aerosol emission sources, and the magnitude of the enhancement has a strong seasonal dependence that is related to the seasonal cloud movement. We propose the indirect aerosol effect as a plausible explanation for the reflectivity observations.
Additional Information
© 2000 The American Geophysical Union. Received November 22, 1999; Revised June 12, 2000; Accepted June 12, 2000. Paper number 2000GL011376. This research was supported by NASA grants NAG5-7230 and NAG5-7680. We thank Y. Jiang, X. Huang, H. Yu for useful discussions, X. Huang for help with the NCEP/NCAR data, S. Byrne, M. Getstell, R. Kahn, J. Kiehl, J. Seinfeld, H. Wang for valuable comments. We thank two anonymous referees for improving the paper.Attached Files
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Additional details
- Eprint ID
- 48734
- Resolver ID
- CaltechAUTHORS:20140820-130043334
- NASA
- NAG5-7230
- NASA
- NAG5-7680
- Created
-
2014-08-20Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences (GPS)