Russian Meteorology and Hydrology ( IF 0.7 ) Pub Date : 2021-07-23 , DOI: 10.3103/s1068373921030080 A. V. Nikolaev 1
Abstract
The need to reparametrize the OVATION Prime (2010) empirical auroral precipitation model using the Russian polar cap index (PC index) is considered. For this purpose, the integrated auroral power of particle precipitation obtained from the Polar satellite data for the period from December 1996 to June 1998 is compared with the PC index and the Newell’s coupling function. The analysis revealed that the PC index at the time delays up to 5–20 minutes correlates with the magnitude of auroral power much better (the correlation coefficient \(R \sim 0.76{-}0.87\)) than the Newell’s coupling function (\(R\sim 0.46{-}0.82\)). Thus, for the purpose of nowcasting the zone of active particle precipitation, the PC index showed much higher scores, although the predicting abilities of the Newell’s coupling function for the time delays of more than 20 minutes remain the best.
中文翻译:
关于重新参数化 OVATION Prime (2010) 极光降水模型的必要性
摘要
需要考虑使用俄罗斯极冠指数(PC 指数)重新参数化 OVATION Prime(2010)经验极光降水模型。为此,将从 1996 年 12 月至 1998 年 6 月期间极地卫星数据获得的粒子降水的综合极光功率与 PC 指数和纽厄尔耦合函数进行比较。分析表明,时间延迟达 5-20 分钟时的 PC 指数与极光强度的相关性(相关系数 \(R \sim 0.76{-}0.87\))比纽厄尔耦合函数(\ (R\sim 0.46{-}0.82\))。因此,为了临近预报活动粒子降水区,PC 指数显示出更高的分数,尽管纽厄尔耦合函数对超过 20 分钟的时间延迟的预测能力仍然是最好的。