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Lee, Myong-In
Climate-Environment Modeling Lab
Research Interests
  • Climate Change, Seasonal Prediction, Extreme Weather, Aerosol

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The impacts of convective parameterization and moisture triggering on AGCM-simulated convectively coupled equatorial waves

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dc.contributor.author Lin, Jia-Lin ko
dc.contributor.author Lee, Myong-In ko
dc.contributor.author Kim, Daehyun ko
dc.contributor.author Kang, In-Sik ko
dc.contributor.author Frierson, Dargan M. W. ko
dc.date.available 2014-11-03T00:21:50Z -
dc.date.created 2014-10-31 ko
dc.date.issued 2008-03 -
dc.identifier.citation JOURNAL OF CLIMATE, v.21, no.5, pp.883 - 909 ko
dc.identifier.issn 0894-8755 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/8107 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=44349178739 ko
dc.description.abstract This study examines the impacts of convective parameterization and moisture convective trigger on convectively coupled equatorial waves simulated by the Seoul National University (SNU) atmospheric general circulation model (AGCM). Three different convection schemes are used, including the simplified Arakawa-Schubert (SAS) scheme, the Kuo (1974) scheme, and the moist convective adjustment (MCA) scheme, and a moisture convective trigger with variable strength is added to each scheme. The authors also conduct a "no convection" experiment with deep convection schemes turned off. Space-time spectral analysis is used to obtain the variance and phase speed of dominant convectively coupled equatorial waves, including the Madden-Julian oscillation (MJO), Kelvin, equatorial Rossby (ER), mixed Rossby-gravity (MRG), and eastward inertio-gravity (EIG) and westward inertio-gravity (WIG) waves. The results show that both convective parameterization and the moisture convective trigger have significant impacts on AGCM-simulated, convectively coupled equatorial waves. The MCA scheme generally produces larger variances of convectively coupled equatorial waves including the MJO, more coherent eastward propagation of the MJO, and a more prominent MJO spectral peak than the Kuo and SAS schemes. Increasing the strength of the moisture trigger significantly enhances the variances and slows down the phase speeds of all wave modes except the MJO, and usually improves the eastward propagation of the MJO for the Kuo and SAS schemes, but the effect for the MCA scheme is small. The no convection experiment always produces one of the best signals of convectively coupled equatorial waves and the MJO. ko
dc.description.statementofresponsibility open -
dc.language ENG ko
dc.publisher AMER METEOROLOGICAL SOC ko
dc.subject MADDEN-JULIAN OSCILLATION ko
dc.subject GENERAL-CIRCULATION MODEL ko
dc.subject TROPICAL INTRASEASONAL OSCILLATIONS ko
dc.subject SIMPLE MULTICLOUD PARAMETERIZATION ko
dc.subject AIR-SEA INTERACTION ko
dc.subject PART I ko
dc.subject LOW-FREQUENCY ko
dc.subject KELVIN WAVES ko
dc.subject STRATIFORM INSTABILITY ko
dc.subject CUMULUS CONVECTION ko
dc.title The impacts of convective parameterization and moisture triggering on AGCM-simulated convectively coupled equatorial waves ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-44349178739 ko
dc.identifier.wosid 000254263700003 ko
dc.type.rims ART ko
dc.description.wostc 58 *
dc.description.scopustc 54 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-10-31 *
dc.identifier.doi 10.1175/2007JCLI1790.1 ko
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