Ten‐year east Asian summer monsoon simulation using a regional climate model (RegCM2)

Lee, Dong‐Kyou; Suh, Myoung‐Seok

doi:10.1029/2000jd900438

Cited by 95 publications

(95 citation statements)

References 26 publications

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“…This tendency did not occur only in the PRM. Previous studies using different regional models also found a similar bias (e.g., Lee and Suh 2000;Wang et al 2003;Y.-H. Ding, personal communication). Similar bias occurred in models with very different designs, indicating the possible existence of an unsolved fundamental problem.…”

Section: Conclusion and Discussionmentioning

confidence: 63%

“…The simulated southwesterly was much too strong in southern China in July, corresponding to the excessive precipitation in the area. In August, the synoptic-scale anticyclone south of Japan and the corresponding strong southwesterly in the northern part of this domain were the major circulation features associated with the anomalous precipitation in Korea (out of the range of the plot; Lee et al 2002). The PRM did not capture the synoptic-scale anticyclone, and therefore underestimated the strength of the southwesterly and the precipitation.…”

Section: Seasonal and Monthly Meansmentioning

confidence: 99%

“…1a). These features reflected dramatic weather events, e.g., floods in the Yangtze River valley and torrential rain in southern China and Taiwan (Ding and Liu 2001;Lee et al 2002;Wang et al 2003). These large precipitation areas tended to be located near or downstream of a strong 850 hPa southwesterly (Fig.…”

Section: Seasonal and Monthly Meansmentioning

confidence: 99%

“…However, climate simulations using present state-of-theart general circulation models usually have difficulty capturing the transient activities of the EASM and its banded structures . Regional models have been used to resolve the fine structure and evolution of the EASM with some degree of success (e.g., Liu et al 1994;Liu et al 1996;Hong et al 1999;Leung et al 1999;Wang et al 2000;Sasaki et al 2000;Lee and Suh 2000;Wang et al 2003). Although many difficulties remain unsolved using a regional model to simulate the EASM, this appears to be a reasonable approach for this type of study.…”

Section: Introductionmentioning

confidence: 99%

“…One of the most recent extreme events is the 1998 EASM. It was rich in anomalous climate conditions, e.g., severe and prolonged floods occurred in China in June and July and in Korea in August (Ding and Liu 2001;Lee et al 2002;Wang et al 2003). Strong intraseasonal oscillations, which were evident at the 30-60 day and 10-20 day periods, were observed to propagate northward and coincide with the Yangtze River floods in June and July (Mu and Li 2000;Xu and Zhu 2002;Wang et al 2003;Ding et al 2004).…”

Section: Introductionmentioning

confidence: 99%

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Simulation of the 1998 East Asian Summer Monsoon using the Purdue Regional Model

Hsu

Kau

et al. 2004

Journal of the Meteorological Society of Japan

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This study used the Purdue Regional Model to simulate the 1998 EASM to assess the model performance. The results indicated that the model was capable of simulating the overall characteristics of the 1998 EASM on the seasonal, intraseasonal, onset, and daily time scales. On the seasonal time scale, the model tended to produce more precipitation over the land and less precipitation over the ocean. This land-sea contrast in the model performance was consistent with the stronger-than-observed Pacific anticyclone in the simulation. It appears that the over simulated anticyclone was also found in other models, and is not a unique problem to the PRM. Future studies are needed to tackle this seemingly fundamental problem in several regional models.The model simulated the seasonal march of the EASM well, characterized by northward-propagating rain bands. Intraseasonal oscillation events propagating northward were also well reproduced. These results confirm that the model is capable of producing realistic sub-seasonal variability in the inner domain, once the proper lateral boundary forcing is provided.The model correctly simulated the onset timing and dramatic changes before and after the onset. However, the model incorrectly simulated the circulation and precipitation during the onset, because it failed to simulate the rapid development of a weak trough in the northern South China Sea. After the onset period, the model performance became reliable again. This indicates that the model is capable of fixing the existing large biases, with the proper lateral boundary forcing.This model was able to simulate the gross fluctuation in the regional-averaged daily precipitation, although it missed some extreme events that resulted in flooding in China. The incorrect simulation of these extreme events was partially responsible for the biases in the simulated seasonal precipitation. It is suggested that a regional model should be able to simulate the multi-scale features from the daily to seasonal time scales and their mutual interaction to correctly simulate the monthly and seasonal mean fields.

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Section: Conclusion and Discussionmentioning

confidence: 63%

Section: Seasonal and Monthly Meansmentioning

confidence: 99%

Section: Seasonal and Monthly Meansmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simulation of the 1998 East Asian Summer Monsoon using the Purdue Regional Model

Hsu

Kau

et al. 2004

Journal of the Meteorological Society of Japan

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Assessment of the RegCM4 over East Asia and future precipitation change adapted to the RCP scenarios

Park

Lee

et al. 2014

J. Geophys. Res. Atmos.

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105

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In this study, we investigated spatial and temporal changes in precipitation over the Coordinated Regional Climate Downscaling Experiment (CORDEX) East Asia domain, for present (1986)(1987)(1988)(1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005) and future (2031-2050) periods using the Regional Climate Model version 4 (RegCM4). Future meteorology produced by the Hadley Center Global Environmental Model version 2 coupled with the Atmosphere-Ocean (HadGEM2-AO) following global climate change scenarios (Representative Concentration Pathways (RCP) 4.5 and 8.5) was used as meteorological boundary conditions for the RegCM4. Six subregions (South Korea, North China, South China, Japan, Mongolia, and India) in the CORDEX East Asia domain were considered for analysis. The RegCM4 simulated spatial distributions of precipitation over East Asia with a correlation coefficient of 0.7 against Climate Research Unit data. The simulation skills of its temporal variability varied based on geographical regions and seasons, showing relatively poorer performance (underestimation in rainfall amount) in summer than in winter, in general. The future climate simulations by the RegCM4 presented that the East Asian continental regions will be warmer and more humid, leading to increased precipitation amounts, especially in the summer. The summer precipitation amount was projected to increase by about 5%, on average, over the East Asian domain, 5À15% in most subregions, and even higher (44% and 24%) in the South Korean region for the RCP 4.5 and 8.5 scenarios, respectively. It was also expected that heavy rainfall (> 50 mm/d) events may occur more frequently in the future possibly owing to meteorological changes that are favorable to convective heavy precipitation.

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Future climate projection under IPCC A1B scenario in the source region of Yellow River with complex topography using RegCM3

et al. 2014

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Located on the Tibetan Plateau, the source region of Yellow River has experienced remarkable climate change over past a few decades, which affects the regional ecosystem, agricultural development, and water availability. In this paper, high-resolution RegCM3 driven by ECHAM5 is applied to generate both control climate for 1980-2000 and regional climate projections for the 21 st century under the Intergovernmental Panel on Climate Change (IPCC) A1B emission scenario. For control climate, RegCM3 can well reproduce the spatial patterns of precipitation and surface air temperature with more detailed representation of fine scale topography. Wet and cold biases are produced in the simulation, but overall improvement by RegCM3 is evident compared to the driving global climate model (GCM) of ECHAM5. In the future projection, the model demonstrates significant warming over the whole analysis domain. Precipitation on the other hand shows mixed signals of reduction and increase over simulation domain, while the areas of precipitation reduction extend with increasing integration time and finally cover most parts of the domain at the end of 21 st century. As projection time increases, high altitude region will experience more precipitation reduction in summer and less reduction or even increase in winter. The winter warming at the high elevation area gets more evident than that at the low elevation area, which may be due to the snow feedback. Analyzing the change of probability distributions of surface climate, it can be concluded that the frequency of heavy precipitation in winter tends to increase with time indicating more extreme precipitation events in the future. The spectrum of temperature probability density functions (PDFs) moves toward higher end.

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Ten‐year east Asian summer monsoon simulation using a regional climate model (RegCM2)

Abstract: Abstract. This paper presents a 10-year (1987)(1988)(1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)

Cited by 95 publications

References 26 publications

Simulation of the 1998 East Asian Summer Monsoon using the Purdue Regional Model

Simulation of the 1998 East Asian Summer Monsoon using the Purdue Regional Model

Assessment of the RegCM4 over East Asia and future precipitation change adapted to the RCP scenarios

Future climate projection under IPCC A1B scenario in the source region of Yellow River with complex topography using RegCM3

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