ISSN 1000-0526
CN 11-2282/P

Volume 14,Issue 4,1988 Table of Contents

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  • 1  The El Nino event in 1986—1987 and its impact on summer lain belt and temperature in China
    张先恭 赵汉光
    1988, 14(4):3-7. DOI: 10.7519/j.issn.1000-0526.1988.4.001
    [Abstract](581) [HTML](0) [PDF 481.79 K](614)
    Abstract:
    Based on the atmospheric and oceanic data from CAC of NOAA (U. S.) and BMC . (Beijing Meteorological Center), the features of formation process of 1986-1987 El-Nino event and the response of atmospheric circulation to the current ENSO episode are examined and compared with 1982-1983 counterpart. The influence of El-Nino event on summer rain belt and temperature anomaly in China is studied and some predictive indicators for summer rain belt in El-Nino year have been found.
    2  An objective analogue method for medium-range weather forecast
    钟元 李秀莉 姚嘉玲 朱美娜
    1988, 14(4):8-11. DOI: 10.7519/j.issn.1000-0526.1988.4.002
    [Abstract](527) [HTML](0) [PDF 340.73 K](577)
    Abstract:
    An objective analogue method for medium- ange (a period of ten days) weather forecast is developed. Using the lated Information and medium-range numerical prediction products and objective analogue criterion, an analogue process by which the weather forecast in a period of 10 days will be made in 500hPa synoptic evolution from past data is found by microcomputer. The forecasting results indicated thatthis method is efficacious.
    3  A comparison between the correlation ratio and the linear correlation coefficient
    朱光宇 胡成群 留小强
    1988, 14(4):12-16. DOI: 10.7519/j.issn.1000-0526.1988.04.003
    [Abstract](519) [HTML](0) [PDF 421.51 K](625)
    Abstract:
    In this paper, a comparison between the correlation ratio and the linear correlation coefficient are given,and their characteristics in evaluating correlation are con-sidered by computing them with practical data. The analysis shows that correlationratio has advantage over linear correlation coefficient and other correlation measure.
    4  A cross spectral analysis of accumulated temperature in the growth period and corn yield in Northeast China
    曹永华
    1988, 14(4):17-20. DOI: 10.7519/j.issn.1000-0526.1988.04.004
    [Abstract](496) [HTML](0) [PDF 346.28 K](580)
    Abstract:
    Based on a cross spectral analysis, the relationship between the periodic fluctuation of the accumulated temperature (∑T) during May to Sept. and corn yield (Y) is obtained, and the distribution features of the power spectra are discussed. The results show that there is a 3.3-year period of ET fluctuation in Liaoning and Jiling Provinces, and a 2.5-year one in Heilongjiang Province, a 6.68-, 4.0- and 4.0-year one of Y fluctuation in Liaoning, Jilin and Heilongjiang Province respectively.

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