| 厄尔尼诺年和反厄尔尼诺年北半球500hPa非绝热热流量场的特征 |
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| 引用本文： | 章基嘉,李跃清,雷兆崇,孙照渤.厄尔尼诺年和反厄尔尼诺年北半球500hPa非绝热热流量场的特征[J].南京气象学院学报,1991(3). |
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| 作者姓名： | 章基嘉 李跃清 雷兆崇 孙照渤 |
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| 作者单位： | 国家气象局
(章基嘉)，四川省气象局
(李跃清)，南京气象学院
(雷兆崇)，南京气象学院(孙照渤) |
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| 摘 要： | 本文应用谱方法,诊断、计算了1964—1985年间,6个厄尔尼诺年和6个反厄尔尼诺年北半球月、季大气非绝热热流量距平场。结果表明:厄尔尼诺现象对大气非绝热热流量距平场具有显著影响,大气的响应表现为低纬和中高纬非绝热热流量正负距平中心有组织的优势排列,其位相或强度存在低频振荡,并且差值中心表现为双月周期。反厄尔尼诺年,大气具有分布不变,但距平中心基本上为反位相的响应形式。最后,通过海气相关分析,指出了海温异常是决定大气非绝热热流量异常的最重要的原因。
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| 关 键 词： | 非绝热加热 谱方法 强迫效应 |
FEATURES OF 500hPa DIABATIC HEATING OVER THE NORTHERN HEMISPHERE DURING EL NINO AND ANTI-EL NINO YEARS |
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| Zhang Jijia,Li Yueqing,Lei Zhaochong,Sun Zhaobo State Meteorological Administration Sichuan Provincial Weather Bureau Nanjing Institute of Meteorology.FEATURES OF 500hPa DIABATIC HEATING OVER THE NORTHERN HEMISPHERE DURING EL NINO AND ANTI-EL NINO YEARS[J].Journal of Nanjing Institute of Meteorology,1991(3). |
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| Authors: | Zhang Jijia Li Yueqing Lei Zhaochong Sun Zhaobo State Meteorological Administration Sichuan Provincial Weather Bureau Nanjing Institute of Meteorology |
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| Institution: | Zhang Jijia;Li Yueqing;Lei Zhaochong;Sun Zhaobo State Meteorological Administration Sichuan Provincial Weather Bureau Nanjing Institute of Meteorology |
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| Abstract: | The monthly and seasonal diabatic heating anomaly fields inthe atmosphere over the Northern Hemisphere during 6 E1 Nino and 6anti-E1 Nino years (1967--1985) are calculated by using spectral represen-tation. Results suggest that E1 Nino events have a significant influenceupon the diabatic heating anomalies in the atmosphere. The atmosphereresponse is characterized by the well-organized positive and negativecenters of diabatic heating in the lower and mid-high latitudes, withtheir phase and intensity having features of low frequency oscillationand difference centers showing quasi-bimonthly fluctuations. During anti-E1 Nino years the atmospheric distributions are the same as during E1Nino years except for the anti-phase of the anomaly center values.Asshown from the analysis of correlationship between sea surface tempe-rature (SST) and atmospheric variables, the anomaly of SST is the dominant reason for the diabatic heating anomaly in the atmosphere. |
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| Keywords: | diabatic heating spectral representation forcing effect |
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