80a-Oscillation of Summer Rainfall over the East Part of China and East-Asian Summer Monsoon

Zhu Jinhong; Wang Shaowu

doi:10.1007/s00376-007-0024-y

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Volume 18 Issue 5

Sep. 2001

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 2001 > 18(5): 1043-1051

80a-Oscillation of Summer Rainfall over the East Part of China and East-Asian Summer Monsoon

1.
Department of Geophysics, Peking University, Beijing 100871,Department of Geophysics, Peking University, Beijing 100871

doi: 10.1007/s00376-007-0024-y

Abstract
References
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Abstract:
Relationship between summer rainfall over the east part of China and East-Asian Summer Monsoon (EASM) was studied based on the summer rainfall grade data set from 1470 to 1999 and the rain gauge data set from 1951 to 1999 over the east part of China, and sea level pressure (SLP) data for the period of 1871-2000. A distinct 80a-oscillation of summer rainfall was found over North China (NC), southern part of Northeast China, over the middle and lower reaches of the Yangtze River (YR) and South China (SC). The 80a oscillation of summer rainfall over NC was varied in phase with that over SC, and was out of phase to that along the middle and lower reaches of the Yangtze River. Summer rainfall over NC correlated negatively with the SLP averaged for the area from 105E to 120E, and from 30N to 35N, but positively to that for the area from 120E to 130E, and from 20N to 25N. Therefore, an index of EASM was de fined by the difference of averaged SLP over the two regions. The summer rainfall over NC was greater than normal when the EASM was strong, and while drought occurred along the middle and lower reaches of the Yangtze River. The drought was found over NC, and flood along the middle and lower reaches of the Yangtze River when the EASM was close to normal. Finally, the interdecadal variability of EASM was stu died by using of long term summer rainfall grade data set over NC for the past 530 years.
- 80a-oscillation,
- Summer rainfall over the east part of China,
- Summer East-Asian monsoon
References

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Manuscript History

Manuscript received: 10 September 2001

Manuscript revised: 10 September 2001

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

80a-Oscillation of Summer Rainfall over the East Part of China and East-Asian Summer Monsoon

1. Department of Geophysics, Peking University, Beijing 100871,Department of Geophysics, Peking University, Beijing 100871

Manuscript received: 2001-09-10
Manuscript revised: 2001-09-10

Abstract: Relationship between summer rainfall over the east part of China and East-Asian Summer Monsoon (EASM) was studied based on the summer rainfall grade data set from 1470 to 1999 and the rain gauge data set from 1951 to 1999 over the east part of China, and sea level pressure (SLP) data for the period of 1871-2000. A distinct 80a-oscillation of summer rainfall was found over North China (NC), southern part of Northeast China, over the middle and lower reaches of the Yangtze River (YR) and South China (SC). The 80a oscillation of summer rainfall over NC was varied in phase with that over SC, and was out of phase to that along the middle and lower reaches of the Yangtze River. Summer rainfall over NC correlated negatively with the SLP averaged for the area from 105E to 120E, and from 30N to 35N, but positively to that for the area from 120E to 130E, and from 20N to 25N. Therefore, an index of EASM was de fined by the difference of averaged SLP over the two regions. The summer rainfall over NC was greater than normal when the EASM was strong, and while drought occurred along the middle and lower reaches of the Yangtze River. The drought was found over NC, and flood along the middle and lower reaches of the Yangtze River when the EASM was close to normal. Finally, the interdecadal variability of EASM was stu died by using of long term summer rainfall grade data set over NC for the past 530 years.

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