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The impact of the diurnal cycle on the MJO over the Maritime Continent: A modelling study assimilating TRMM rain rate into global analysis

Cited 13 time in scopus
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Title
The impact of the diurnal cycle on the MJO over the Maritime Continent: A modelling study assimilating TRMM rain rate into global analysis
Other Titles
TRMM 강수자료 동화를 통한 일주기변동과 적운대류활동의 관련성 규명
Authors
Kwang-Yul Kim
Hyo-Jong Song
Gyu-Ho Lim
Kim, Baek-Min
Ji-Hyun Oh
Subject
Meteorology & Atmospheric Sciences
Keywords
TRMM; diurnal cycle; global spectral model
Issue Date
2012
Publisher
Springer
Citation
Kwang-Yul Kim, et al. 2012. "The impact of the diurnal cycle on the MJO over the Maritime Continent: A modelling study assimilating TRMM rain rate into global analysis". Climate Dynamics, 40(3-4): 893-911.
Abstract
In the present study, we use modeling experiments to investigate the impact of the diurnal cycle on the Madden-Julian Oscillation (MJO) during the Australian summer. Physical initialization and a nudging technique enable us to assimilate the observed Tropical Rainfall Measuring Mission (TRMM) rain rate and atmospheric variables from the National Centers for Environmental Prediction- National Center for Atmospheric Research Reanalysis 2 (R2) into the Florida State University Global Spectral Model (FSUGSM), resulting in a realistic simulation of the MJO. We suggest that diminishing the diurnal cycle in NO_DIURNAL consumes less moist static energy (MSE), which is required to trigger both diurnal and intraseasonal convection. Thus, the remaining MSE may play a major role in intensifying the MJO over the Maritime Continent in the model simulation.e the observed Tropical Rainfall Measuring Mission (TRMM) rain rate and atmospheric variables from the National Centers for Environmental Prediction- National Center for Atmospheric Research Reanalysis 2 (R2) into the Florida State University Global Spectral Model (FSUGSM), resulting in a realistic simulation of the MJO. We suggest that diminishing the diurnal cycle in NO_DIURNAL consumes less moist static energy (MSE), which is required to trigger both diurnal and intraseasonal convection. Thus, the remaining MSE may play a major role in intensifying the MJO over the Maritime Continent in the model simulation.
URI
http://repository.kopri.re.kr/handle/201206/6154
DOI
http://dx.doi.org/10.1007/s00382-012-1419-8
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