首页> 外文期刊>Annals of Arid Zone >Dry Spells, Wet Spells and Rainfall Persistency at Sao Gongalo (NE Brazil) K.
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Dry Spells, Wet Spells and Rainfall Persistency at Sao Gongalo (NE Brazil) K.

机译:Sao Gongalo(巴西东北)的干法术,湿法术和降雨持久性。

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Results of a study of dry spells, wet spells and rainfall persistency at Sac Goncalo, a semi-arid station in Northeast Brazil are presented in this paper. Daily rainfall data for a period of 40 years is used in the study. Frequency distribution of dryspells of different durations at the station is compared with those derived from two statistical models. It is found that the Eggenberger-Polya model provides better results than the logarithmic model. Rainfall persistency is investigated using Erickson's (1965) and Jorgensen's (1949) models. The incidence of wet spells lasting one, two and three days is less than expected on chance and spells lasting longer than three days are more frequent than expected on chance basis. Rainfall persistency reaches amaximum value on the third day of a rainy spell.
机译:本文介绍了巴西东北部半干旱的Sac Goncalo干旱干旱,湿干旱和降雨持续时间的研究结果。该研究使用了40年的每日降雨量数据。将站点上不同持续时间的干式拼写的频率分布与从两个统计模型得出的频率进行比较。发现Eggenberger-Polya模型比对数模型提供更好的结果。使用Erickson(1965)和Jorgensen(1949)模型对降雨持续性进行了研究。持续1天,2天和3天的湿法发生率低于偶然发生的预期,持续3天以上的湿法发生率高于偶然发生的预期发生率。降雨持续时间在下雨天的第三天达到最大值。

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