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The Regional Dependency of Cloud-radiative Forcing on the Sea Surface Temperature in the Interannual and Seasonal Time Scales  

Lee, Woo-Seop (Department of Atmospheric Science, Kongju National University)
Kwak, Chong-Heum (Department of Atmospheric Science, Kongju National University)
So, Seon-Sup (Department of Atmospheric Science, Kongju National University)
Suh, Myoung-Seok (Department of Atmospheric Science, Kongju National University)
Kim, Maeng-Ki (Department of Atmospheric Science, Kongju National University)
Publication Information
Journal of the Korean earth science society / v.24, no.6, 2003 , pp. 558-567 More about this Journal
Abstract
The regional dependency of cloud-radiative forcing at the top of atmosphere is studied using ERBE (Earth Radiation Budget Experiment), ISCCP (International Satellite Cloud Climatology Project) and NCEP/NCAR (National Centers for Environmental Prediction/National Center for Atmospheric Research) reanalysis data for 60 months from January 1985 to December 1989 over tropical ocean. In the interannual time scale, the dependency of cloud-radiative forcing on the sea surface temperature over the equatorial eastern Pacific ocean is about 7.4Wm$^{-2}$K$^{-1}$ for longwave radiation and about -4.4Wm$^{-2}$K$^{-1}$ for shortwave radiation, respectively. This shows that the net cloud-radiative forcing due to the increase of sea surface temperature over the equatorial eastern Pacific ocean heats the atmosphere. But the dependency is reversed over tropical oceans with -3.4Wm$^{-2}$K$^{-1}$ for longwave and 1.9WmWm$^{-2}$K$^{-1}$ for shortwave radiation, indicating that the net cloud-radiative forcing cools the atmosphere over tropical oceans. In raw data including seasonal cycle, the dependency of cloud-radiative forcing over the equatorial eastern Pacific ocean is very similar to that in interannual time scale in both the magnitude and the sign. But the dependency of cloud-radiative forcing on the sea surface temperature over tropical oceans is about 0.2Wm$^{-2}$K$^{-1}$ for longwave and 2.7Wm$^{-2}$K$^{-1}$ for shortwave radiation, respectively. These results represent that the role of seasonal cycle on the cloud radiative forcing is gradually more important than role of interannual time scale as the ocean area is broadening from the tropical central Pacific to the tropical ocean.
Keywords
cloud-radiative forcing; interannual variation; seasonal variation; sea surface temperature;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 손병주, 1996, 구름이 지표 장파복사 수지에 미치는 영향.한국기상학회지 , 32(2), 229-242
2 Lau, K.-M., Wu, H.-T, and Bony, S., 1997, The Role of Large-Scale Atmospheric Circulation in the Relation-ship Between Tropical Convection and Sea Surface Temperature. Joumal of Climate, 10, 381-392   DOI   ScienceOn
3 Zhang, M. H., Cess, R. D., and Xie, S. C., 1996, Relation-ship between Cloud Radiative Forcing and Sea Surface Temperatures over the Entire Tropical Oceans, Joumal of Climate 9, 1374-1384   DOI   ScienceOn
4 Arking, A. and Ziskin, D., 1994, Relationship between clouds and sea surface temperatures in the western trop-ical Pacific. Journal of Climate, 7, 988-1000   DOI   ScienceOn
5 Bony, S., K. Lau, M., and Sud, Y. C., 1997, Sea surface temperature and large-scale circulation influences on tropical greenhouse effect and cloud radiative forcing. Joumal of Climate, 10, 2055-2077   DOI   ScienceOn
6 Harrison, E. F, Barkstorm, B. R., Ramanathan, V, Cess, R. D., and Gibson, G. G. 1990, Seasonal variation of cloud radiative forcing derived from the Earth radiation Budget Experiment. Joumal of Geophysical Research, 95, 18687-18703   DOI
7 Rossow, W. B., Brest, C. L., and Roiter, M., 1996, Intema-tional Satellite Cloud Climatology Project (ISCCP) Update of Radiance Calibrations. WMO/TD.-No. 736. World Meteorological Organization
8 김맹기, 강인식, 1998, 지표온난화에 미치는 구름-복사 피드백의 계절의존도. 한국기상학회 추계학술대회 초록집. 194-197
9 Bergman, J. and Hendon, H. H., 2000, The impact of clouds on the seasonal cycle of radiative heating over the Pacific. Joumal of the Atmospheric Science, 57, 545-566   DOI   ScienceOn
10 Preisendorfer, R. W. and Mobley, C. D., 1988, Principalcomponent analysis in meteorology and oceanography.Elsevier Science Publication, 425 pp
11 Ho, C.-H., Chou, M.-D., and Sui, C.-H. 2002, Compari-son of different earth radiation budget experiment data sets over tropical oceans, International Journal of Clima-tology, 22, 263-270   DOI   ScienceOn
12 Pai, D. S. and Rajeevan, M., 1998, Clouds and cloud radi-ative forcing over tropical Indian ocean and their rela-tionship with sea surface temperature. Current Science, 75, 372-381
13 Song, B.-G. and Kim, Y.-S., 2002, Interrelationship between sea surface temperature and clouds over the Tropical ocean. Journal of the Korean Meteorological Society, 38 (3), 225-235
14 Ramanathan, V, Cess, R. D., Hamson, E. R, Minnis, R, Barkstomn, B. R., Ahmad, E., and Hartmann, D., 1989, Cloud-radiative forcing and climate: Results from the Earth Radiation Budget Experiment. Science, 243, 57-63   DOI
15 Hartmann, D. L. and Michelsen, M., 1993, Large-scale effects on the regulation of tropical sea surface tempera-ture. Joumal of Climate, 6, 2049-2062   DOI   ScienceOn