论文标题
基于Fengyun-2卫星数据的天文位点上可观察到的夜晚比例的新分析
New analysis of the fraction of observable nights at astronomical sites based on FengYun-2 satellite data
论文作者
论文摘要
可观察到的夜晚的比例是选择天文位点的重要参数。近年来，气象卫星数据在识别和提供可观察到的夜晚的统计数据方面发挥了重要作用。我们提出了一种基于Fengyun-2系列的地静止气象卫星以及多个天文学地点的天气记录来估算可观察到夜晚的比例的方法。我们已经计算了印度尼西亚27个地点和中国两个天文遗址的可观察到夜晚的比例，以验证该方法。从我们的方法得出的结果与以前的工作表现出了很好的一致性。此外，我们在中国上方可观察到的夜晚的年度分布得出了，这表明该区域接近40 $^{\ circ} $ N的夜晚比中国的其他地区更可观察到。
The fraction of observable nights is an essential parameter for selecting astronomical sites. In recent years, meteorological satellite data have played an essential role in recognising and providing statistics of observable nights. We present a method to estimate the fraction of observable nights based on the FengYun-2 series of geostationary meteorological satellites and weather records of multiple astronomical sites. We have calculated the fraction of observable nights at 27 sites in Indonesia and two astronomical sites in China to validate the method. The results derived from our method show good agreement with previous works. Furthermore, we have derived the yearly distribution of the fraction of observable nights above China, which indicates the area near 40$^{\circ}$N has more observable nights than other areas in China.
