利用F10.7和MgII构建太阳极紫外辐射长时间序列

Construction of long-time series of solar extreme ultraviolet radiation with F10.7 and Mg II

利用SOHO/SEM在1996—2008年的太阳EUV观测数据,比较和评估F10.7和MgII作为EUV代理参数的代表性,不能支持Viereck等关于Mg II是比F10.7更好的代理参数的结论.通过比较对两种参数的多种回归计算结果,确立双因子极大似然估计方法构建EUV计算模式,通过模型计算结果与SEM观测数据比较,表明该模型能够很好地重建EUV数据系列.利用该模式,构建了1978年11月以来的太阳极紫外辐射数据序列.

This paper compares and evaluates the representation of F10.7 and Mg Ⅱ as the proxies of EUV （Extreme Ultraviolet） using the observations of solar EUV from 1996 to 2008 of SOHO （Solar and Helospheric Observatory） /SEM （Solar EUV Monitor）,and the results show that the conclusion put forward by Viereck et al.,i.e.,Mg Ⅱ is a better proxy than F10.7,cannot be supported.We have established the two-factor MLE （Maximum Likelihood Estimate）method to construct EUV calculation model through comparing the multiple regression calculation results of the two parameters,and the comparison between the calculated results using the model and the observations using SEM shows that this model could be used to reconstruct EUV data series.We have constructed the solar EUV radiation data set from November 1978 using this mode.