SPATIAL AND TEMPORAL VARIATIONS OF THE KINEMATIC CHARACTERISTICS IN THE PROPAGATION OF ATMOSPHERIC STATIONARY WAVES

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摘要 Time-meanglobalgeneralcirculationdataareemployedtoanalyzethetemporalandspatialvariationsofthemeridionalgradientofzonalmeanpotentialvorticity,thecriticalwavenumbern_sforhorizontalwave-propagation,andthecriticalwavenumberK_cforverticalwave-propagation.Therebythekinematiccharac-teristicsinthepropagationofatmosphericstationarywavesandtheirannualvariationsarestudied.Resultsshowthatinthetropospheren_sandK_cusuallydecreasewiththeincreaseofeitherlatitudeoraltitude.Synopticandnear-resonantRossbywavescouldbetrappedduringtheirupwardandmeridionalpropagations.Thesecharacteristicspossessprominentannualvariations,especiallyintheNorthernHemisphere.Itisfoundthatthespatialandtemporalvariationsofthesekinematiccharacteristicsareingoodagreementwiththoseoftheatmosphericwavepatterns.
机构地区 不详
出处 《气象学报:英文版》 1990年4期
出版日期 1990年04月14日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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