太平洋副热带高压及南亚高压在NCEP/NCAR和ECMWF再分析资料中的对比研究

陈雯; 智协飞

太平洋副热带高压及南亚高压在NCEP/NCAR和ECMWF再分析资料中的对比研究

陈雯,
智协飞

南京信息工程大学/江苏省气象灾害重点实验室, 江苏, 南京210044

基金项目: 江苏省自然灾害重点实验室(KLME050210)项目资助

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出版历程
- 收稿日期: 2006-10-25
- 修回日期: 2007-05-28

ECMWF REANALYSIS DATASETS COMPARISONS OF THE WEST PACIFIC SUBTROPICAL HIGH AND OF THE SOUTH ASIA HIGH BETWEEN NCEP/NCAR AND ECMWF REANALYSIS DATASETS

Jiangsu Key Laboratory of Meteorological Disaster, NUIST, Nanjing 210044, China

摘要

摘要: 利用NCEP/NCAR和ECMWF 1961～2000年北半球逐月平均的500 hPa和100 hPa高度场再分析资料对影响我国天气、气候的重要系统——北半球西太平洋副热带高压以及南亚高压做了对比研究,发现两者在不同的再分析资料中虽然具有一定的相似性,但也存在着明显的区别。在1980年以前两者存在较大差异。NCEP/NCAR再分析资料分析出的副高明显偏弱,而其所反映的副高的变化在幅度和强度上均大于ECMWF再分析资料的结果。进一步分析发现,NCEP/NCAR再分析资料所得出的副高的年代际变化可能是不真实的。在1969年、1979～1991年间,NCEP/NCAR再分析资料中的南亚高压中心强度明显比ECMWF的强,特别是1992～1995年间,NCEP/NCAR再分析资料中的南亚高压中心强度更强且中心范围更大。此外,NCEP/NCAR再分析资料所反映的南亚高压的变化在幅度和强度上也都大于ECMWF再分析资料的结果。
- 再分析资料 /
- 西太平洋副热带高压 /
- 南亚高压 /
- 对比研究
Abstract: Comparisons of the west Pacific subtropical high and of the south Asia high are made in terms of NCEP/NCAR and ECMWF 500 hPa and 100 hPa monthly geopotential height fields of Northern Hemisphere during the period 1961～2000.Discrepancies are found especially around the year 1980.The west Pacific subtropical high in NCEP/NCAR data is less intensive than that in ECMWF data before 1980.The range and strength of the west Pacific subtropical high variation described by NCEP/NCAR data is above those depicted in ECMWF data.The same situation appears in the 100hPa geopotential field.These discoveries imply that the interdecadal variation of the two systems may not be true.Besides,the South Asia high center in NCEP/NCAR data is obviously stronger than that in ECMWF data during the period 1969,1979～1991 and 1992～1995.Furthermore,the range is larger from 1992 to 1995.
- reanalysis datasets /
- the West Pacific Subtropical High /
- the South Asia High /
- comparisons

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参考文献(17)

[1]	何金海,温敏,施晓晖,等.南海夏季风建立期间副高带断裂和东撤及其可能机制[J].南京大学学报,2002,38(3):318-330.
[2]	陶诗言,赵思雄,周晓平,等.天气学和天气预报的研究进展[J].大气科学,2003,27(4):451-467.
[3]	吴国雄,毛江玉,段安民,等.青藏高原影响亚洲夏季气候研究的最新进展[J].气象学报,2004,62(5):528-540.
[4]	钱永甫,张琼,张学洪.南亚高压与我国盛夏气候异常[J].南京大学学报,2002,38(3):295-307.
[5]	STERL A.On (in) homogeneity of reanalysis products[J].Journal of climate,2004,17(19):3 866-3 873.
[6]	POCARD I,JANICOT S,CAMBERLIN P.Comparison of rainfall structures between NCEP/NCAR reanalysis and observed data over tropical Africa[J].Climate Dynamics,2000,16 (12):897-916.
[7]	DELL'AQUILA A,LUCARINI V,RUTI P M,et al.Hayashi spectra of the northern hemisphere mid-latitude atmospheric variability in the NCEP/NCAR and ECMWF reanalysis[J].Climate Dynamics,2005,25(6):639-652.
[8]	JOSEY S A.A comparison of ECMWF,NCEP/NCAR and SOC surface heat fluxes with Moored Buoy Measurements in Subdnction Region of the Northeast Atlantic[J].Journal of Climate,2001,14(8):1 780-1 789.
[9]	TRIGO I F.Climatology and Interannual variability of storm-tracks in the Euro-Atlantic sector:a comparison between ERA-40 and NCEP/NCAR reanalysis[J].Climate Dynamics,2006,26(2/3):127-143.
[10]	DAVID H B,RYAN L F.Strong trends in the skill of the ERA-40 and NCEP/NCAR Reanalysis in the high and midlatitudes of the southern hemisphere,1958-2001[J].Journal of Climate,2004,17(23):4 603-4 619.
[11]	ANNAMALAI H,SLINGO J M,SPERBER K R.The mean evolution and variability of the Asian Summer Monsoon:Comparison of ECMWF and NCEP/NCAR Reanalysis[J].Monthly Weather Review,1999,127(6):1 157-1 186.
[12]	INOUE T,MATSUMOTO J.A comparison of summer sea level pressure over east Eurasia between NCEP-NCAR reanalysis and ERA-40 for the Period 1960-1999[J].Journal of the Meteorological Society of Japan,2004,82(3):951-958.
[13]	CUI Maochang (崔茂常),FENG Ming (冯明),LIAN Shumin (练树民).Evaluation of daily precipitation in China from ECMWF and NCEP Reanalysis[J].Chinese Journal of Oceanology and Limnology,2000,18(1):35-41.
[14]	岳阳,管兆勇,王盘兴.两种再分析资料间Hadley环流双层结构的差异[J].南京气象学院学报,2005,28(5):695-703.
[15]	魏凤英.现代气候统计诊断与预测技术[M].北京:气象出版社,1999:35-63.
[16]	MANN H B.Nonparametric tests against trend[J].Econometrica,1945,13(3):245-259.
[17]	KENDALL M G.Rank correlation methods[M].London:Charles Griffin,1970:125-130.