| 1 | 正在变弱的印度季风和ENSO相关关系显示文摘对 1 4 0a历史资料的分析表明 :ELNino 南方涛动 (ENSO)与印度夏季风的反相关关系 (暖ENSO事件产生弱季风 )在近 1 0a来已经破坏了。有 2种可能原因。首先 ,与ENSO事件相关的瓦克环流向东南移可能导致了印度地区下沉气流减弱 ,因而有利于加强季风。另外 ,冬春季欧亚大陆地面温度升高———这是中纬度大陆变暖趋势的一部分 ,可能有利于加强陆地—海洋热力梯度 ,因而导致强季风的爆发。这就增加了这样一种可能性 :即近 1 0a来欧亚大陆变暖有助于维持正常水平的季风降水 ,尽管在这期间发生了强ENSO事件。 | K.Krishna Kumar Balaji Rajagopalan Mark A.Cane 赵连伟 | 2000 | 辽宁气象2000，，1： | 1 |
| 2 | Perturbations in Earth’s Atmosphere over An Indian Region during the Total Solar Eclipse on 22 July 2009显示文摘During a total solar eclipse(TSE)on 22 July 2009,atmospheric perturbations were monitored from the surface to thermosphere to understand TSE’s impact on the meteorological(temperature,relative humidity,wind speed,and wind direction)and chemical(O3 and NOx)parameters around Kadapa(14.28°N,78.42°E),a tropical semi-arid region of India.For this purpose,an experiment was conducted at Yogi Vemana University Campus,Kadapa,India,to measure the temperature,wind speed,wind direction,and concentrations of ozone(O3),NO,NO2,and NOx by using the automatic weather station(AWS)and O3 analyzer.On the eclipse day(22 July 2009),the surface observations at Kadapa showed a reduction in temperature(about 1.1℃)because of the solar insulation.Comparison of the thermal,dynamical(wind),and chemical parameters on the TSE day with control days[preceding(21 July 2009)and succeeding(23 July 2009)the TSE]illustrated the influence of solar eclipse.During the eclipse period,the O3 mixing ratio decreased,while NO2 and NOx increased;however,NO remained unchanged.In addition,radio occultation(RO)temperature profiles from Constellation Observing System for Meteorology,Ionosphere,and Climate(COSMIC)/Formosat Satellite Mission(FORMOSAT-3)and Thermosphere,Ionosphere,and Mesosphere Energetics and Dynamics(TIMED)satellites were utilized to understand the impact of TSE on dynamics of the middle and upper atmosphere from tropopause to the thermosphere.High vertical resolution COSMIC observations revealed that during the solar eclipse,tropopause was cooler with twin peaks(double tropopause).The lower thermosphere between 110 and 130 km became warmer during the TSE,which might be caused by the dynamical response of the atmosphere in this region to the solar eclipse.The experimental data have provided very fine-scale variations of the atmospheric parameters both in time and height and also constituted a new set of results on TSE for further research. | S.B.Surendra PRASAD Vinay KUMAR K.Krishna REDDY S.K.DHAKA Shristy MALIK M.Venkatarami REDDY U.Murali KRISHNA | 2019 | Journal of Meteorological Research2019，33，4： | 0 |
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