[O-05] Poster presentations by senior high school students

[O05-P23] Look for a reliable Weather Forecast !

*Chinatsu Kobayashi¹, *Ako Miura¹, Momoka Yoshida¹, Misato Roppongi¹, Marin Sawada¹ (1.Maebashi Girls' High School )

Keywords:Weather Forecasts

When we made plans such as the astronomical observation event and the camp to practice earth science in our club, we thought that we wanted to more accurately practice the weather forecast of high starlit sky, because good weather conditions are important to practice astronomy. At first, we thought about analyzing weather satellite images, but we doubted how predictable they are. Instead, we thought that by using existing weather forecasts and comparing their predictions with the actual weather conditions in real time, we could find the most accurate conditions to determine the best time to view the starlit sky. To test, we recorded the weather forecast of several companies online and checked the state of the weather of the night sky in person and investigated by comparing those data. In addition, we organized the data which we collected, applied it to a formula, and compared the value. As a result, we found that the amount of days which are good for viewing the starlit sky increased in winter in comparison with summer and we found that the starlit sky index and accuracy ratio of Grid Point Value were higher for ‘Weather .jp' and ‘Excite weather' than other weather forecasts.