THE VARIATION OF THE SPRING PRECIPITATION IN GUANGZHOU ANDITS PRECURSORY SIGNALS

GU De-jun; JI Zhong-ping; LIN Ai-lan; HAO Li-sheng

Abstract:

Guangzhou spring rainfall mainly exhibits interannual variation of Quasi-biannual and interdecadal variation of 30 yrs, and is in the period of weak rainfall at interdecadal time scale. SST anomalies (SSTA) of Nino3 are the strongest precursor of Guangzhou spring rainfall. They have significant positive correlation from previous November and persist stably to April. Nino3 SSTA in the previous winter affects Guangzhou spring rainfall through North Pacific subtropical high and low wind in spring. When Nino3 SSTA is positive in the previous winter, spring subtropical high is intense and westward, South China is located in the area of ascending airflow at the edge of the subtropical high, and water vapor transporting to South China is intensified by anticyclone circulation to the east of the Philippines. So Guangzhou spring rainfall is heavy. When Nino3 SSTA is negative, the subtropical high is weak and eastward, South China is far away from the subtropical high and is located in the area of descending airflow, and water vapor transporting to South China is weak because low-level cyclonic circulation controls areas to the east of the Philippines and north wind prevails in South China. So Guangzhou spring rainfall is weak and spring drought is resulted.

Get Citation+

GU De-jun, JI Zhong-ping, LIN Ai-lan, et al. THE VARIATION OF THE SPRING PRECIPITATION IN GUANGZHOU ANDITS PRECURSORY SIGNALS [J]. Journal of Tropical Meteorology, 2006, 12(2): 121-129.

Export:

Article Metrics

THE VARIATION OF THE SPRING PRECIPITATION IN GUANGZHOU ANDITS PRECURSORY SIGNALS

Guangzhou Institute of Tropical and Marine Meteorology / Key Open Laboratory for Tropical Monsoon, CMA

Guangzhou Central Weather Observatory

Hengshui Meteorological Bureau of Hebei Province

Abstract: Guangzhou spring rainfall mainly exhibits interannual variation of Quasi-biannual and interdecadal variation of 30 yrs, and is in the period of weak rainfall at interdecadal time scale. SST anomalies (SSTA) of Nino3 are the strongest precursor of Guangzhou spring rainfall. They have significant positive correlation from previous November and persist stably to April. Nino3 SSTA in the previous winter affects Guangzhou spring rainfall through North Pacific subtropical high and low wind in spring. When Nino3 SSTA is positive in the previous winter, spring subtropical high is intense and westward, South China is located in the area of ascending airflow at the edge of the subtropical high, and water vapor transporting to South China is intensified by anticyclone circulation to the east of the Philippines. So Guangzhou spring rainfall is heavy. When Nino3 SSTA is negative, the subtropical high is weak and eastward, South China is far away from the subtropical high and is located in the area of descending airflow, and water vapor transporting to South China is weak because low-level cyclonic circulation controls areas to the east of the Philippines and north wind prevails in South China. So Guangzhou spring rainfall is weak and spring drought is resulted.

HTML

Reference (16)

[1]	WU Shang-sen, LIANG Jian-yin. Temporal and spatialcharacteristics of the drought and flood during the rainy seasonin south China[J]. Journal of Tropical Meteorology, 1992, 8(1):87-92.
[2]	WU Shang-sen, HUANG Cheng-chang, XUE Hui-xian. Oninterannual variation of precipitation during the second rainyseason in south China [J]. Journal of Tropical Meteorology,1990, 6(4): 348-356.
[3]	JI Zhong-ping, GU De-jun, XIE Jiong-guang. Multipletemporal scale analysis of climate change over the past 100years in Guangzhou [J]. Journal of Tropical Meteorology, 1999,15(1): 48-55.
[4]	LIANG Jian-yin. The interannual variations of thesubtropical high ridge position over western Pacific in Juneand its influence on precipitation in south of China [J]. Journalof Tropical Meteorology, 1994, 10(3): 274-279.
[5]	LIANG Jian-yin. Variations of SST for South China Sea andtheir influence on Guangdong rainfall [J]. Journal of TropicalMeteorology, 1991, 7(3): 246-253.
[6]	LIN Ai-lan, LIANG Jian-yin. Correlation between outgoinglongwave radiation (OLR) and precipitation in Guangdong [J].Journal of Tropical Meteorology, 1993, 9(3): 248-255.
[7]	LIANG Jian-yin, WU Shang-sen. Precipitation anomalies inthe summer of Guangdong and summer monsoon [J]. Journal ofTropical Meteorology, 1999, 15(1): 38-47.
[8]	XIE Qiong-guang, JI Zhong-ping. Relationship betweenSST in northwestern Pacific and precipitation in rainingseasons in Guangdong [J]. Journal of Tropical Meteorology,1999, 15(1): 56-63.
[9]	DENG Li-ping, WANG Qian-qian. On the relationshipbetween precipitation anomalies in the first raining season(April-June) in southern China and SST over offshore waters inChina [J]. Journal of Tropical Meteorology, 2002, 18(1): 45-55.
[10]	LI Chun-hui, LIANG Jian-yin, WU Shang-sen. Thecharacteristics of precipitation in the raining season inGuangzhou and its affecting factors over the past 100 years [J].Journal of Tropical Meteorology, 2004, 20(4): 365-374.
[11]	LU Shi-jin. Climate in South China [M]. Beijing:Meteorological Press, 1990: 163-174.
[12]	SMITH T M, REYNOLDS RW. Extended Reconstructionof Global Sea Surface Temperatures Based on COADS Data(1854-1997) [J]. Journal of Climate, 2003, 16(10): 1495-1510.
[13]	SMITH T M, REYNOLDS R W. Improved ExtendedReconstruction of SST (1854-1997) [J]. Journal of Climate,2004, 17(12): 2466-2477.
[14]	KALNAY E, KANAMITSU M, KISTLER, et al. TheNCEP/NCAR 40 year reanalysis project [J], Bulletin ofAmerican Meteorological Society, 1996, 77(3): 437-471.
[15]	MA Kai-yu, CHEN Xing, ZHANG Yao-cun. Diagnosticsof Climate [M]. Beijing:Meteorological Press, 1996: 107-109.
[16]	CHEN Lie-ting. Interaction between the subtropical highover the north Pacific and the sea surface temperature of theeastern equatorial Pacific [J]. Chinese Journal of AtmosphericSciences, 1982, 6(2): 148-156.

THE VARIATION OF THE SPRING PRECIPITATION IN GUANGZHOU ANDITS PRECURSORY SIGNALS

Abstract:

References

Get Citation+

Share Article

Article Metrics

Proportional views

Manuscript History

Online:

通讯作者: 陈斌, bchen63@163.com