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A Comparative Study of the Numerical Simulation of the 1998 Summer Flood in China by Two Kinds of Cumulus Convective Parameterized Methods


doi: 10.1007/BF03342059

  • The NCC T63L20 model of the National Climate Center, China Meteorological Administration isemployed to simulate the 1998 summer flood, which mainly occurred in the region of the Yangtze River andNortheast China. For this study, two kinds of cumulus convection parameterized schemes are employed inthis model respectively. The simulations show that the Gregory parameterized scheme, which is still usedin the United Kingdom Meteorological Office routine model, simulates more reasonable rainfall amountand distribution compared to the Kuo-type scheme. Moreover, the Gregory scheme better simulates thetendency of general circulation than the Kuo-type scheme. On the whole, the Gregory scheme providesa good simulation of the main features of the seasonal precipitation and general circulation in China,although the simulated result still exhibits some departures from the observations.
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Manuscript History

Manuscript received: 10 January 2003
Manuscript revised: 10 January 2003
通讯作者: 陈斌, bchen63@163.com
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A Comparative Study of the Numerical Simulation of the 1998 Summer Flood in China by Two Kinds of Cumulus Convective Parameterized Methods

  • 1. Institute of Atmosphere Physics, Chinese Academy of Sciences, Beijing 100029,Institute of Atmosphere Physics, Chinese Academy of Sciences, Beijing 100029,Institute of Atmosphere Physics, Chinese Academy of Sciences, Beijing 100029

Abstract: The NCC T63L20 model of the National Climate Center, China Meteorological Administration isemployed to simulate the 1998 summer flood, which mainly occurred in the region of the Yangtze River andNortheast China. For this study, two kinds of cumulus convection parameterized schemes are employed inthis model respectively. The simulations show that the Gregory parameterized scheme, which is still usedin the United Kingdom Meteorological Office routine model, simulates more reasonable rainfall amountand distribution compared to the Kuo-type scheme. Moreover, the Gregory scheme better simulates thetendency of general circulation than the Kuo-type scheme. On the whole, the Gregory scheme providesa good simulation of the main features of the seasonal precipitation and general circulation in China,although the simulated result still exhibits some departures from the observations.

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