渤海西岸城市边界层特征与城市化发展对其影响的分析

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1、(26．91％)，autumn(23．92％)andsummer(13．94％)(9)Theroughnessofurbanwinddirectionislargerthansuburbwinddirection，andtheinteranualchangeofannualmeanroughnessappearedthetrendofwaveescalation，andtherearevariationsindifferentseasons．Theproportionofinstabilitystratificationishigherthanthatofstabilitystr

2、atificationandneuralstratificationintheatmosphereboundarylayer，andtheinteranualchangeofproportionofinstabilitystratificationappearedthetrendofwavedegression，andthatofstabilitystratificationandneuralstratificationappearedthetrendofwaveescalation．Theinversionlayerofatmosphereboundarybottomappea

3、redfirstlyon17：00-21：00，andtheintensionofinversionlayerislargestaout7：00．theinteranualchangeofinversionlayerofatmosphereboundarybottomhasthreephases，andfromsuburbtypetourbantype．(10)TheurbanatmosphereboundarylayerinthecoastofBohaiseaisthetrendofdryandwarmtype．Theinfluenceofurbandevelopment09i

4、nteranualchangeaboutthedynamicalstructureofatmosphereboundarylayerinthewestcoastofBohaiseaisobvious．(11)ThepossiblemechanismoftheinfluenceofurbandevelopmentoninteranualchangeabouttheatmosphereboundarylayerinthewestcoastofBohaiseaislistedinbelow：Itismainlyinfluencedbythefasturbandevelopmentint

5、heweatcoastofBohaiseabesidesthe10cationandlandform．Withurbandevelopment，thecitypopulatinincreasedrapidly，andthecityeconomydeveloped．andthecityareaisextended．Andalltheseresultedintheintensionofpeopleactivitybeingenhanced，thekindofunderlyingsurfacebeingchanged，theatmosphereenvironmentbeingchang

6、ed，andthestructureofatmosphereboundarybeingchanged．Withallthesefactorseffectedsynthetical，theespecialurbanatmosphereboundarylayerinthecoastofBohaiseaformed．Keyword：interanalchange，urbanboundarylayer，influencefourbandevelopment,westcoastofBohaiseaY1008987原创性声明本人郑重声明：本人所呈交的学位论文，是在导师的指导下独立进行研究所取

7、得的成果。学位论文中凡引用他人已经发表或未发表的成果、数据、观点等，均已明确注明出处。除文中已经注明引用的内容外，不包含任何其他个人或集体已经发表或撰写过的科研成果。对本文的研究成果做出重要贡献的个人和集体，均已在文中以明确方式标明。本声明的法律责论文作者签名：O日期：2QQ互生!Q目关于学位论文使用授权的声明本人在导师指导下所完成的论文及相关的职务作品，知识产权归属兰州大学。本人完全了解兰州大学有关保存、使用学位论文的规定，同意学校保存或向国家有关部门或机构送交论文的纸质版和电