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两种不同的灾害征兆——厄尔尼诺和拉尼娜
字体: [ ] 日期: 2020-03-24 浏览次数:
来源:老时时彩_时彩注册_信誉无忧 作者:

   

    这两种灾害源于一个特殊的地理条件,这就是赤道太平洋东部存在一片辽阔的冷水洋面。这片冷水洋面是一种极其特殊的自然现象。因为,根据太阳辐射有随纬度升高而减少的分布原理,赤道附近应当是温度最高的地方,然而这里却反了过来,出现了低温洋面,成为低纬度地区最大的冷源(热汇),所以对大气环流有极其特殊的影响。

老时时彩    chidaotaipingyangdongbudelengshuiyangmianwendubianhua——xingchengeerninuohelanina

    chidaotaipingyangdongbudelengshuiyangmianshiyoumilulengyangliuxingchengde。zhiyaokankanditu,jiuhuizhuyidao,nanbanqiudeyangmianyuandayulumian,zainanjizhoudezhouweidaxiyang、taipingyangheyinduyangsandayangyijinghuichengyipianliaokuodeshuiyu,jiaozuonandayang。nandayangzhengshixifengshengxingdai,zheilideyangliushiyouxixiangdongderao(nan)jiliu,zheizhiraojiliuzaiguangkuodenandayanghaohaodangdangxiangdongliuqu,ranernanmeidaluquenanshendaonanwei55duzuoyou,qiduiandenanjibandaoqueyoubeishendaonanwei64dufujin,yushizaizheilixingchengyishankuandubuchaoguo10geweijudexiazhaitongdao。yangliushoudaozheigeludimenkandezulan,shibufenshuiliuyannanmeixianaoxingdehaianxianzheerxiangbei,zheijiushimiluyangliu。 

老时时彩    miluyangliushoudiqiuzizhuandeyingxiang,zaixiangbeiliudongdeguochengzhongzhujianxiangxipianzhuan,daolechidaofujingengyouyudongfengdaideyingxiang,bianchengleyoudongxiangxidenanchidaoyangliu。youyuyangliulikaihaian,youliyujiaolengerfuyuyingyangdeshencenghaishuishangyongbuchong,jifuyoushengwudefazhanchuangzaolelianghaodetiaojian,shizheilixingchengyouliangdeyuchangheniaoleidefanzhizhidi。

    danshi,meigejinian,zheilidelengshuiyangmianfashengshengwenxianxiang,zheijiushieerninuo,tashiyinfadangdixuduozaihaideyuanyin。shouxian,tayingxiangdaoshencenghaishuibuzaishangyong,shifuyoushengwuquefayingyangwuzhierwufashengcun,yuleiyuniaoleiyesuizhiquefashiwudaliangsiwang,chengweiyuyezaihaidezhuyaoyuanyin;lingwai,zheilibenlaishiyushuihenshaodeganhandiqu,zheishiyouyuhaiwenshangsheng,shikongqiduiliujiaqiang,yizhibaoyuchengzai。youyuzheizhongxianxiangwangwangzaishengdanjieqianhouzuiweixianzhu,suoyirenmenjiaotaeerninuo,jishengyingdeyisi。 

    yueerninuoxiangfan,dangchidaoyangmiandongbushuimianwendugengdiyuchangnian,erxibushuiwengaoyuchangnian,yenengyinqizaihai,zheijiaozuolanina。2007-2008niandongjimeiguojingchuxianlongjuanfeng,erzhongguochuxianduonianbuyudexuezai,tongchidaodayangxibushuiwenshenggaoyouguan。 

    eerninuoyulanina——bukenengwanquanzhuzailaoshishicaiguodeqihouyichang

    zaizuijinjishinianlieerninuoyulaninapinfanfasheng,zuijindeyicishi2007nianxiabannianzhijinzaichidaozhongdongtaipingyangxingchengdelaninashijian。shoulaninayingxiang,cong2008nian1yuekaishi,laoshishicaiguonanfangdiquchuxianbainianyiyudedamianjidiwenyuxuebingdongzaihaitianqi,zaochengjudasunshi。1997-1998nianyu1982-1983nianshiyingxianghendadeliangci,tebieshi1997-1998nianzaieerninuozhihouhaifashengyiciqiangdadelanina。1997nian6yuekaishi,nanmeieguaduoer、milu、baxi、zhiliyuagentingdebeibudoubaoyuchengzai,shizheilideganhanhuangmobiandeshengtaifanrong;erzaichidaotaipingyangxibudeyinniyuaodaliyazechuxianduonianbuyudehanzai,rehaipinfan,duochudifanggaowendapojilu,aodaliyadeheidelanganghemanduolazhenhaichuxian46℃degaowen。 

    quanqiutianqishiyousandataodongdexianghuyingxiangzuchengde,sandataodonggouchenglequanqiudaqihuanliudezongtituxiang。zheisandataodongjiushibeitaipingyangfuredaigaoyayualiushendiyazuchengdebeitaipingyangtaodong、beidaxiyangfuredaigaoyayubingdaodiyazuchengdebeidaxiyangtaodong、chidaotaipingyangdongbugaoyayuxibudiyazuchengdenanfangtaodong。zheisandataodongbudanxianghuyingxiang,erqiemeigetaodongjuyouqiaoqiaobanshideqiyabianhua,jiqiyigechengyuanshengyajiubansuizhelingyichengyuandejiangya,xiangfan,qizhongyigejianyajiuyoulingyigeshengya。

    eerninuoxianxiangfashengzainanfangtaodongdedongtaipingyanggaoyaqu,suoyitajiutongguonanfangtaodongertongdaqihuanliulianxiqilai。meidangeerninuofashengshi,nanfangtaodongdeqiaoqiaobanguanxijiufashengdaozhuan: yuanlaizaichidaotaipingyangdexibuyinniyuaodaliyayidaidediyaqubianruole,shenzhibianchenggaoqiya,zheijiushidezheiliyuanbenjiangshuihenduodeqihoubiandeganhanshaoyu;xiangfan,dongtaipingyangdegaoqiyazebianchengdiqiya,shizheiliyuanbenganhandeqihoubianchengchaoshiduoyu。yushieerninuobachidaotaipingyanglianchengyigezhengti,erqiehaitongdaqihuanliudebianhuamiqiexiangguan。renmenbatamentongjiaozuoenso,jieerninuoyunanfangtaodongdeyingwensuoxie。

    中国并不位于ENSO的中心区,而是位于它的边缘地区,中国每年的气候是同冬季风与夏季风的交替与相互作用有关的。厄尔尼诺主要是通过夏季风影响老时时彩国,冬季风并不受厄尔尼诺的直接影响,所以厄尔尼诺不可能完全主宰老时时彩国的气候异常。在强大的厄尔尼诺影响下,老时时彩国的冬春季副热带高压可能异常发达,直接影响老时时彩国冬季的多雨现象。

    现在全球增温已经十分明显,增温的中心是在南北两个极区,这里增温的幅度达到全球平均幅度的两倍。2007年北冰洋的冰雪面积最小时只有300万平方公里,约为北冰洋总面积的1/7,南极洲冰雪也在消融。其结果,极区与赤道之间的温度差必将明显减少,影响西风的强度,进而使绕极洋流的强度减少和位置北移,秘鲁洋流也将因此受到影响;温度升高又会使副热带高压加强,高压区海水蒸发加快,有利于温盐洋流加强。这许多现象起着不同的作用,是厄尔尼诺现象增加的原因。但其中有些作用是相反的,所以对厄尔尼诺的影响究竟如何,还需要专门的研究。

            文章来源:老时时彩_时彩注册_信誉无忧

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