本文研究了层云降水加热对于激发热带大气季节内振荡(Madden-Julian oscillation,简称MJO)所起到的作用。将层云加热作用引入到非线性的CISK(Conditional Instability of Second Kind)-Kelvin波方程组,并分别利用截谱方法和四阶Runge-Ku...本文研究了层云降水加热对于激发热带大气季节内振荡(Madden-Julian oscillation,简称MJO)所起到的作用。将层云加热作用引入到非线性的CISK(Conditional Instability of Second Kind)-Kelvin波方程组,并分别利用截谱方法和四阶Runge-Kutta方法对该方程组进行了简化和数值求解,结果发现,单纯的层云加热同积云加热一样也可以激发出MJO。如果考虑两者共同的作用,相比于仅考虑积云的情况,能够在很大程度上扩大加热强度的取值范围,从而使热带大气更容易发生MJO。层云作用的引入还使得波动多以波群传播,波动形式更规律,周期性也更显著。展开更多
The photo-generated charge transfer characteristics of n-Si/TiO2/Azo pigment in micrometer regions was studied by means of kelvin probe force microscopy(KFM) technique.The results showed that the photo-generated elect...The photo-generated charge transfer characteristics of n-Si/TiO2/Azo pigment in micrometer regions was studied by means of kelvin probe force microscopy(KFM) technique.The results showed that the photo-generated electrons of Azo pigment particles transferred to n-Si/TiO2 under illumination,and a photo-induced p-n-p structure in micro-scale was observed for the first time.This result indicates that photo-generated charge transfer characteristics of organic/inorganic complex in nano-scale can be observed directly by KFM.展开更多
文摘本文研究了层云降水加热对于激发热带大气季节内振荡(Madden-Julian oscillation,简称MJO)所起到的作用。将层云加热作用引入到非线性的CISK(Conditional Instability of Second Kind)-Kelvin波方程组,并分别利用截谱方法和四阶Runge-Kutta方法对该方程组进行了简化和数值求解,结果发现,单纯的层云加热同积云加热一样也可以激发出MJO。如果考虑两者共同的作用,相比于仅考虑积云的情况,能够在很大程度上扩大加热强度的取值范围,从而使热带大气更容易发生MJO。层云作用的引入还使得波动多以波群传播,波动形式更规律,周期性也更显著。
文摘The photo-generated charge transfer characteristics of n-Si/TiO2/Azo pigment in micrometer regions was studied by means of kelvin probe force microscopy(KFM) technique.The results showed that the photo-generated electrons of Azo pigment particles transferred to n-Si/TiO2 under illumination,and a photo-induced p-n-p structure in micro-scale was observed for the first time.This result indicates that photo-generated charge transfer characteristics of organic/inorganic complex in nano-scale can be observed directly by KFM.
