TITLE

Global Monsoon, El Niño, and Their Interannual Linkage Simulated by MIROC5 and the CMIP3 CGCMs

AUTHOR(S)
Kim, Hyung-Jin; Takata, Kumiko; Wang, Bin; Watanabe, Masahiro; Kimoto, Masahide; Yokohata, Tokuta; Yasunari, Tetsuzo
PUB. DATE
November 2011
SOURCE
Journal of Climate;Nov2011, Vol. 24 Issue 21, p5604
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This study evaluates the capability of coupled global climate models (CGCMs) in simulating the prime examples of the forced response (global monsoon) and internal feedback process (El Niño). Emphases are also placed on the fidelity of the year-to-year variability of global monsoon precipitation that is coordinated by the interannual sea surface temperature (SST) fluctuation over the tropics. The latest version of the Model for Interdisciplinary Research on Climate 5 (MIROC5) with advanced physical schemes is compared with the two previous versions (MIROC3.2, high- and medium-resolution versions) and with the 20 CGCMs participating in the third phase of the Coupled Model Intercomparison Project (CMIP3). The climatological annual mean and cycles of precipitation and 850-hPa winds, the key components to demarcate the global monsoon domain, are reproduced better in MIROC5 than in MIROC3 versions. As a consequence, the former considerably outperforms the latter and is generally superior to the CMIP3 CGCMs in replicating the intensity and domain of global monsoon precipitation and circulations. These results highlight the importance of the improved physical parameterization in a model. Analyses of the monthly Niño-3 index suggest that the amplitude and periodicity of El Niño are simulated better in MIROC5 than in the MIROC3 versions. Yet the reality of nonlinear ENSO dynamics measured indirectly by the SST asymmetricity over the equatorial Pacific is unsatisfactory in the MIROC family as well as in the majority of the CMIP3 models. The maximum covariance analysis shows that a significant fraction of the interannual global monsoon rainfall variability is in concert with El Niño. The multimodel results reveal that such coupling is robust across the current CGCMs. More importantly, the fidelity of the global monsoon precipitation significantly relies on the realism of tropical SST. Comparison among the MIROC models suggests that improved El Niño is likely attributable to the more realistic Bjerknes feedback loop, which results from the intensified convective activity over the equatorial central Pacific Ocean.
ACCESSION #
70333249

 

Related Articles

  • The 1997/98 Summer Rainfall Season in Southern Africa. Part II: Model Simulations and Coupled Model Forecasts. Lyon, Bradfield; Mason, Simon J. // Journal of Climate;Jul2009, Vol. 22 Issue 13, p3802 

    This is the second of a two-part investigation of rainfall in southern Africa during the strong El Niño of 1997/98. In Part I it was shown that widespread drought in southern Africa, typical of past El Niño events occurring between 1950 and 2000, generally failed to materialize during the...

  • f. Global monsoon summary. Wang, B. // Bulletin of the American Meteorological Society;July 2014 Supplement, pS101 

    The article summarizes global monsoon activity in 2013. Topics discussed include the annual variation of the tropical-subtropical precipitation and circulation, the variability of the Earth's climate system, and the impact of the El Niño-South Oscillation (ENSO) on global monsoon...

  • Formation of the anomalous summer precipitation in east China in 2010 and 1998: A comparison of the impacts of two kinds of El Niño. Wang, Qin; Li, Shuanglin; Fu, Jianjian; Li, Guoping // Acta Meteorologica Sinica;Dec2012, Vol. 26 Issue 6, p665 

    In the summers of 1998 and 2010, severe floods occurred in the middle and lower reaches of the Yangtze River. Although an El Niño event took place preceding each of the summer floods, significant differences between the two summer floods and the two El Niño events were identified. The...

  • Rainfall regime changes and trends in Botswana Kalahari Transect's late summer precipitation. Mphale, K.; Dash, S.; Adedoyin, A.; Panda, S. // Theoretical & Applied Climatology;Apr2014, Vol. 116 Issue 1/2, p75 

    Sixty-year-long January-March (JFM) rainfall data from four (4) stations along the Kalahari Transect were analyzed for long-term trends and abrupt changes in rainfall regimes. On average, JFM rainfall accounts for more than 50 % of annual rainfall in the region. Mann-Kendall trend test has shown...

  • Annual Cycle of Rainfall in the Western North Pacific and East Asian Sector. Chou, Chia; Huang, Li-Fan; Tseng, Lishan; Tu, Jien-Yi; Tan, Pei-Hua // Journal of Climate;Apr2009, Vol. 22 Issue 8, p2073 

    The annual cycle of precipitation over the western North Pacific and East Asian (WNP–EA) sector has five major periods: spring, the first and second wet periods, fall, and winter. In this study, processes that induce precipitation in each period are examined from a large-scale point of...

  • Indian Summer Monsoon variations could have affected the early-Holocene woodland expansion in the Near East. Djamali, Morteza; Akhani, Hossein; Andrieu-Ponel, Valérie; Braconnot, Pascale; Brewer, Simon; de Beaulieu, Jacques-Louis; Fleitmann, Dominik; Fleury, Jules; Gasse, Françoise; Guibal, Frédéric; Jackson, Stephen T.; Lézine, Anne-Marie; Médail, Frédéric; Ponel, Philippe; Roberts, Neil; Stevens, Lora // Holocene;Aug2010, Vol. 20 Issue 5, p813 

    Postglacial expansion of deciduous oak woodlands of the Zagros-Anti-Taurus Mountains, a major biome of the Near East, was delayed until the middle Holocene at ~6300 cal. yr BP. The current hypotheses explain this delay as a consequence of a regional aridity during the early Holocene, slow...

  • Signature of a southern hemisphere extratropical influence on the summer monsoon over India. Viswambharan, Nithin; Mohanakumar, K. // Climate Dynamics;Aug2013, Vol. 41 Issue 2, p367 

    The weakening relationship of El Nino with Indian summer monsoon reported in recent years is a major issue to be addressed. The altered relationships of Indian monsoon with various parameters excite to search for other dominant modes of variability that can influence the precipitation pattern....

  • Subkilometer Simulation of a Torrential-Rain-Producing Mesoscale Convective System in East China. Part I: Model Verification and Convective Organization. Zhang, Man; Zhang, Da-Lin // Monthly Weather Review;Jan2012, Vol. 140 Issue 1, p184 

    A nocturnal torrential-rain-producing mesoscale convective system (MCS) occurring during the mei-yu season of July 2003 in east China is studied using conventional observations, surface mesoanalysis, satellite and radar data, and a 24-h multinested model simulation with the finest grid spacing...

  • Observational and modeling studies of impacts of the South China Sea monsoon on the monsoon rainfall in the middle-lower reaches of the Yangtze River during summer. Jin, Lijun; Zhao, Ping // Acta Meteorologica Sinica;Apr2012, Vol. 26 Issue 2, p176 

    Based on the ERA-40 and NCEP/NCAR reanalysis data, the NOAA Climate Prediction Center's merged analysis of precipitation (CMAP), and the fifth-generation PSU/NCAR Mesoscale Model version 3 (MM5v3), we defined a monsoon intensity index over the East Asian tropical region and analyzed the impacts...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics