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ENSO循环

ENSO循环的相关文献在1993年到2021年内共计69篇,主要集中在大气科学(气象学)、海洋学、地球物理学 等领域,其中期刊论文60篇、会议论文9篇、专利文献183326篇;相关期刊33种,包括兰州大学学报(自然科学版)、大气科学、大气科学进展(英文版)等; 相关会议7种,包括2011年全国汛期气候预测技术交流会、第六届苏皖两省大气探测、环境遥感与电子技术学术交流研讨会、第26届中国气象学会年会等;ENSO循环的相关文献由129位作者贡献,包括李崇银、王凡、陈永利等。

ENSO循环—发文量

期刊论文>

论文:60 占比:0.03%

会议论文>

论文:9 占比:0.00%

专利文献>

论文:183326 占比:99.96%

总计:183395篇

ENSO循环—发文趋势图

ENSO循环

-研究学者

  • 李崇银
  • 王凡
  • 陈永利
  • 蔡学湛
  • 严邦良
  • 周任君
  • 张东凌
  • 张人禾
  • 张启龙
  • 穆明权
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 王宏; 郑秋萍; 温珍治; 黄艳艳
    • 摘要: ENSO(ElNiño-SouthernOscillation)循环被认为是年际气候变化的最强信号,是由东亚季风异常造成的赤道西太平洋异常纬向风驱动的热带太平洋次表海温距平的循环。利用NOAA提供的ONI(OceanicNiñoIndex)指数资料与福建省近地层质量臭氧浓度(ρ(O_(3)))资料,经数理统计、标准化处理,以滞后相关为切入点,开展福建省不同城市O_(3)Z指数与NiñoZ海温距平指数相关性分析,并探讨了ENSO不同相位对福建省ρ(O_(3))产生强迫的程度及其滞后效应。(1)福建省ρ(O_(3))的年际变化与ENSO的年际变化存在着一定的关系,城市O_(3)Z指数与NiñoZ海温距平指数呈现明显的负相关关系,且滞后在3个月时二者相关(绝对值)达到最大,加权平均后,相关系数为-0.5102,通过ɑ=0.001显著性检验。(2)不同城市O_(3)Z指数与NiñoZ海温距平指数的相关性有一定的差异,内陆城市比沿海城市明显偏小,且滞后性也不同,前者均在滞后1个月后相关系数(绝对值)达到最大值,平均相关系数-0.4048(ɑ=0.01),后者在滞后3个月时相关系数(绝对值)达到最大值,平均相关系数-0.5487(ɑ=0.001)。(3)ENSO循环对福建省ρ(O_(3))变化的影响主要表现为在ElNiño影响时ρ(O_(3))较常年平均值偏低,在LaNiña影响时ρ(O_(3))较常年平均值偏高,且O_(3)年超标天数偏多。研究的主要目的是基于ENSO预测,为开展福建省ρ(O_(3))长期趋势预测奠定基础。
    • 李晓惠; 徐峰; 陈虹颖; 夏天竹; 涂石飞
    • 摘要: 利用1980-2016年海表温度(SST)、海平面气压场(SLP)、南方涛动指数(SOI)、平均海洋尼诺指数(ONI)等资料对近37 a发生的ENSO(El Ni?o-Southern Oscillation)事件进行统计分析,并用经验正交函数分析法以及小波分析方法研究西太平洋暖池与ENSO循环过程之间的作用机制.研究表明:近37 a来,Nino3.4区的SST在厄尔尼诺(El Ni?o)现象发生时存在较大的正距平,采用Nino3.4区SSTA的大幅度突变作为指标,能够更好地反映El Ni?o事件的发生;El Ni?o事件合成分析可知其形成过程中,西太平洋有一逐渐增强东移的暖中心;西太暖池东边界变化具有明显的年际变化特征,平均3~4 a经历一次循环,并出现变化周期延长的现象;海表温度的EOF能很好地预示ENSO的发生;通过小波分析可以看出暖池东边界对ENSO的发生有较好的预报意义.
    • 于飞; 王启
    • 摘要: 采用SODA数据资料,分析了1950-2008年太平洋北赤道逆流(NECC)的年际变化特征及其与ENSO循环的联系.研究结果表明:(1)ElNino(La Nina)盛期是NECC流量由年际异常增大(减小)到异常减小(增大)的转折点;(2)NECC流轴的纬度在ElNino(La Nina)盛期达到年际异常最南(北)端;(3) NECC流轴在深度上呈西深东浅倾斜,El Nino(LaNina)盛期倾斜最弱(强).通过构造典型ENSO循环的海表面风应力场,驱动一层半线性约化重力数值模式,结果验证了在NECC的年际变化中海表面风应力场是关键因素,而大洋波动(Kelvin波和Rossby波)和洋流本身是海洋内部的主要动力调整机制.
    • 毛燕军; 茅史亮; 李少虹
    • 摘要: 对1968-2013年浙江森林火灾与气象资料进行统计分析,并对 ENSO 循环下浙江森林火灾与气象要素的关系进行了进一步分析,研究ENSO循环对浙江森林火灾的影响。结果表明:1968-1983年浙江森林火灾次数处于低值区,1984年起火灾次数突然上升,并于1986年达峰值,随后出现逐波下降趋势。浙江森林火灾多年平均月际变化呈单峰型,从12月开始上升,峰值出现在来年的4月,5月开始急剧下降,谷值出现在6月,海温暖异常月份,森林火灾减少;海温冷异常月份,森林火灾增加;ENSO循环影响浙江森林火灾的主要气候机理为:El Nino爆发前的冬季有利于浙江森林火灾的发生,而El Nino发生后的冬季不利于火灾发生;与之相反,在La Nina爆发之前的冬季不利于森林火灾的发生,而在La Nina发生后的冬季,有利于森林火灾的发生;ENSO循环还通过与冬季风的关系影响到浙江森林火灾峰值月份的出现时间,在El Nino年夏季,一般不利于浙江森林火灾的发生,在La Nina年夏季,当副高西伸脊点偏西,有利于森林火灾的发生,当西伸脊点偏东,则不利于森林火灾发生。%Statistical analysis on forest fires and meteorology data in Zhejiang Province during 1968-2013 demonstrated that forest fires occurred less during 1968-1983, but increased from 1984 and topped in 1986, and then decreased. Monthly forest fires(1995-2013) showed a single peak curve, increased from December, topped in April of the next year, decreased sharply in May, lowest in June. Analysis on ENSO circulation and forest fires concluded that forest fires decreased when the sea temperature was warm, and increased when it was cold.
    • 周莹; 赵雪花
    • 摘要: 基于汾河上游兰村站1956-2000年径流数据,采用累积距平、M -K趋势检验、有序聚类、EM D分解和双累积曲线等方法,探讨了径流的年内分布和年际变化特征,定量分析了降水和人类活动对径流的影响率,进一步研究了径流对太阳活动和ENSO循环的响应。结果表明:①汾河上游径流年内分布极不均匀。径流年际变化呈显著减少趋势,经历了丰枯两个阶段,并在1970年发生突变。年径流具有准2~4年等周期。②1970年前径流主要受降水影响,1970年后人类活动对径流减少贡献最大,降水次之。③厄尔尼诺发生年径流减少,结束年增加;拉尼娜发生年径流增加,结束年减少。两事件主要影响夏季和秋季的径流。太阳活动和径流丰枯有很好的响应关系。
    • 李天然; 张人禾; 温敏
    • 摘要: In this paper, the impact of ENSO on the precipitation over China in the winter half-year is investigated diagnostically. The results show that positive precipitation anomalies with statistical significance appear over southern China in El Nio episodes, which are caused by the enhanced warm and humid southwesterlies along the East Asian coast in the lower troposphere. The enhanced southwesterlies transport more water vapor to southern China, and the convergence of water vapor over southern China increases the precipitable water and specific humidity. In La Nia episodes,although atmospheric elements change reversely, they are not statistically significant as those in El Nio periods. The possible physical mechanism of the different impact of ENSO cycle on the precipitation over southern China is investigated by analyzing the intraseasonal oscillations(ISOs) in El Nio and La Nia winter half-years, respectively. By comparing the characteristics of ISOs in El Nio and La Nia, a physical mechanism is proposed to explain the different responses of the precipitation over China to ENSO in the winter half-year. In El Nio episodes, over western North Pacific(WNP) and South China Sea(SCS) the ISOs are inactive and exert little effect on water vapor transport and convergence, inducing positive precipitation anomalies with statistical significance over southern China in El Nio episodes. In La Nia episodes, however, the ISOs are active, which weaken the interannual variation signals of ENSO over WNP and southern China and lead to the insignificance of the interannual signals related to ENSO. Therefore, the different responses of precipitation over China to ENSO in the winter half-year are possibly caused by the difference of intraseasonal oscillations over WNP and SCS between El Nio and La Nia.
    • 赵景耀; 杨琰; 彭涛; 郭延伟; 任小凤; 张银环; 聂旭东; 刘肖; 李建仓
    • 摘要: 通过对河南西部栾川县鸡冠洞2009年10月~2012年10月3个完整水文年的大气降水、洞穴滴水氢氧稳定同位素及洞穴现生碳酸钙δ18O的连续监测,探讨研究区岩溶记录的夏季风水汽源δ18O变化特征的气候意义.结果表明:1)栾川地区大气降水δ18O在研究时段内变化范围为1.2‰~-16.1‰,夏季(7~9月)大气降水δ18O加权平均值-10.8‰;鸡冠洞中滴水δ18O变化范围为-7.3‰~-11.9‰,平均值-9.4‰;鸡冠洞中现生碳酸钙δ18O变化范围为-6.6‰ ~-10.1‰,平均值-8.7‰;研究区大气降水、洞穴滴水和洞穴现生碳酸钙的δ18O变化趋势基本一致,表现为夏秋偏轻冬春偏重.2)栾川地区大气降水线为:δD=8.10 δ18O+ 10.51,接近全球大气降水线.3)研究区大气降水中δ18O的雨量效应不显著,但对环流效应记录敏感,响应2009年10月~ 2010年10月E1 Ni(n)o和La Ni(n)a的转换过程,El Ni(n)o期间研究区大气降水、滴水和现生碳酸钙的δ18O显著偏重,且大气降水过量氘(d)明显偏高,而La Ni(n)a期间的δ18O和过量氘(d)变化特征则相反.
    • 祝丽娟; 王亚非; 高桥正明
    • 摘要: 采用1979-2009年NCEP/NCAR再分析资料、NOAA向外长波辐射(outgoing long-wave radiation,简称OLR)及扩展重建海表面温度资料,对南海大气季节内振荡(Intra-seasonal Oscillation,简称ISO)特征及其与ENSO循环的关系进行了诊断分析.结果表明:1)南海大气ISO的30~60 d周期在5-10月均显著.一般年南海大气ISO的对流传播在纬向上存在东传和西传,在经向上具有南北半球季节性摆动的特征.以低频动能表征的南海大气ISO强度年代际变化特征明显,近31a来趋势增强,年变化呈单峰结构,峰值在7-8月.2)南海大气ISO的对流与ENSO循环显著相关,其强度在E1 Ni(n)o(La Ni(n)a)年减弱(增强).与一般年对比,南海大气ISO对流在E1 Ni(n)o和LaNi(n)a年均表现为西传减弱、北传显著.北传特征表现为强对流活跃带于春季(4-5月)北跳至北半球(在La Ni(n)a年最北可至35°N),但在北半球的传播方向与一般年相比存在显著差异.3)南海大气ISO强度与ENSO循环关系密切,在E1 Nifio(La Ni(n)a)年减弱(增强),两者表现为约半年(6~8个月)的滞后相关.Ni(n)o3区海表面温度异常序列与南海大气ISO强度的相关在中西太平洋地区和E1 Ni(n)o成熟前的春、秋季最显著,同时相关中心伴随低频动能高值区东移.
    • 张晓晓; 张钰; 徐浩杰
    • 摘要: 以洮河流域把口水文站红旗站1960−2010年的径流序列为基础数据,采用Mann-Kendall方法分析了1960−2010年洮河流域年径流的变化趋势,并通过相关分析、统计规律分析、降水−径流双累积曲线法研究了气候变化、太阳黑子活动、ENSO循环和下垫面要素对洮河径流变化的影响.结果表明:1960−2010年洮河流域年径流总体呈减少趋势,其中1960−1969年洮河流域年径流有微弱的增加趋势,1970年以后,洮河流域年径流呈减少趋势,特别是1995年以后,年径流减少趋势明显.洮河流域多年径流的减少与汛期降水量的减少和蒸发量的增加密切相关,气候变化对洮河流域径流变化影响较大.1960−1985年在太阳黑子活动周期极大值年及前两年,年径流出现明显异常的现象.太阳黑子活动高值区年径流总体偏少,太阳黑子活动低值区年径流总体偏多.1985−2010年太阳黑子活动高值与低值区年径流均偏少. ENSO循环对洮河年径流变化有一定影响,洮河流域年径流对El Nino较为敏感.在El Nino发生当年,年径流偏枯;在El Nino发生次年,年径流偏枯程度不像El Nino当年那样显著.洮河流域年径流对La Nina并不敏感,下垫面要素变化对洮河流域年径流变化影响有限.%Based on the runoff data during 1960−2010 at Hongqi Station in the outlet of the Tao River basin, the runoff tendency was studied using the Mann-Kendall trend test and also studied were the climate changes, sunspot activities, ENSO cycle and underlying surface variations affecting the changes in the runoff of the Tao River basin by using correlation analysis, statistical law analysis and precipitation-runoff double mass analysis. The results showed that the annual runoff of the Tao River basin had a weak increasing trend during 1960−1969 and then it decreased during 1970−2010. The decreasing trend of annual runoff was significant after 1995. The trend of annual runoff reduction in the Tao River basin was strongly related with the reduction of precipitation, as well as the addition of evaporation in the flood season. Marked anomalies in annual runoff occurred in the maximum in the first two years of sunspot activities during 1960−1985. The runoff in the high values of sunspot activities was less than normal, while the runoff in the low values of sunspot activities was more than normal during 1960−1985. The runoff both in the high and low values of sunspot activities was less than normal during 1985−2010. The ENSO cycle had some influence on the runoff of the Tao River basin. The annual runoff was sensitive to El Nino, i.e. when it occurred, the runoff decreased. In the next year when El Nino did not occur the runoff did not decrease as much as in the previous year. The annual runoff was not sensitive to La Nina and the underlying surface variation had a weak influence on the runoff of the Tao River basin.
    • 陈永利; 赵永平; 王凡; 唐晓晖
    • 摘要: Based on SODA ocean assimilation and NCEP atmospheric reanalysis data , relationships of the main modes of tropic Pacific subsurface ocean temperature anomalies with variations of the upper ocean circulation of the North Pacific low-latitude western boundary currents (NPLLWBC) and the Asian-North Pacific atmospheric ver-tical and horizontal flow fields are analyzed. Major results are summarized as follows :(1) The tropical Pacific sub-surface ocean variabilities are dominated by two primary modes ,which make up the ENSO cycle. The first mode , represents the ENSO mature phase ,and mainly prevails in winter ,while the second mode represents the ENSO transition phase ,prevailing in summer.(2 ) ENSO cycle has major impact on the upper ocean circulation in the NPLLWBC areas. During the developing phase of El Ni ño events or decaying phase of La Ni ña events ,anomalous cyclonic circulation evolves in this area ,accompanied by strengthening of the North Equatorial Current (NEC ) , northward shift of the NEC bifurcation location ,enhancement of the Mindanao Current (MC) ,weakening of the Kuroshio Current (KC ) in its source region , and the strongest phase of the North Equatorial Countercurrent (NECC). During the mature phase of El Ni ño ,the anomalous cyclonic circulation in this area reaches its strongest phase ,with NEC also strongest ,NEC bifurcation location northmost ,MC strongest ,KC weakest ,and NECC weakened. Vice versa ,during the decaying of El Ni ño or developing of La Ni ña ,anomalous anti-cyclonic circula-tion appears in the area ,the NEC weakens ,NEC bifurcation location shifts southward ,MC weakens while KC strengthens ,and the NECC becomes weakest. During the mature phase of La Ni ña ,the anti-cyclonic circulation a-nomalies become strongest ,with NEC weakest ,NEC bifurcation location southmost ,MC weakest ,KC strongest , and NECC strengthened. (3) The influence of ENSO cycle on the upper ocean circulation of NPLLWBC are mainly achieved through the change of atmospheric circulation in response to thermal condition anomalies in the tropical Pacific during ENSO events. The ENSO events first generate anomalous thermal conditions in the tropical Pacific Ocean ,which lead to anomalous convection activities in the above atmosphere. The latter in turn alters atmospher-ic circulation field in related area directly or indirectly by energy transport through the “atmospheric bridge”resul-ting in anomalous sea surface wind stress fields ,and thus forces corresponding variations in the upper ocean circu-lation. In the end of the paper ,the reasons for generation and sustainment of the anomalous anti-cyclonic/cyclonic wind fields near Philippines during the ENSO events are also analyzed ,and the contributions of air-sea interaction in the NPLLWBC areas to the ENSO cycle are discussed.%用SODA海洋同化和NCEP大气再分析资料,分析了热带太平洋次表层海温异常主要模态与北太平洋低纬度西边界流海域上层海洋环流和亚洲-北太平洋地区大气垂直和水平流场变化之间的关系,得到以下结果:(1)在热带太平洋海洋次表层ENSO事件具有两种模态,二者组合构成ENSO循环。第一模态为 ENSO成熟期,主要出现在冬季,第二模态为 ENSO过渡期,主要出现夏季。(2) ENSO循环对北太平洋低纬度西边界流区上层海洋环流有重要影响。在El Ni鼻o发展期或La Ni鼻a衰退期,该区出现气旋性异常环流,北赤道流(NEC )加强,NEC分叉位置北移,棉兰老海流(MC)加大,菲律宾以东黑潮(KC)减小,北赤道逆流(NECC)最强。在El Ni鼻o(La Ni鼻a)成熟期,该区气旋性(反气旋性)异常环流达最强,NEC最强(最弱),NEC分叉位置最北(最南),MC最大(最小),KC最小(最大),NECC减弱(加强)。在El Ni鼻o衰退期或La Ni鼻a发展期与El Ni鼻o发展期相反,该区出现反气旋性异常环流,由此导致相应流系异常发生反位相变化。(3) ENSO循环对北太平洋低纬度西边界流海域上层海洋环流的影响是通过 ENSO事件期间热带太平洋热力状况异常改变上空大气环流来实现的。ENSO事件首先造成热带太平洋海洋热力状况异常,导致其上空对流活动异常,后者直接或间接通过“大气桥”能量传输引起相关地区大气环流场的变化,致使海面风应力场异常,进而强迫上层海洋环流场的相应变化。文章最后还分析了ENSO事件期间菲律宾附近异常反气旋或异常气旋性风场的产生和持续原因,讨论了北太平洋低纬度西边界流海域海气相互作用在 EN-SO循环中的贡献。
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