N. Aksaker, M. Bayazit, Z. Kurt, S. K. Yerli, A. Aktay, M. A. Erdoğan
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引用次数: 0
摘要
本研究的主要目的是采用多标准决策分析(MCDA)和地理信息系统(GIS)技术来确定和评估南极洲天文观测的潜在地点。我们的研究重点是制定南极洲天文观测站点适宜性指数(SIASA)。该指数是通过合并卫星和模型数据制定的,提供了二十年来广泛的时间和空间覆盖范围。为了评估其适用性,我们结合 MCDA 和 GIS 技术,对各种数据进行了评估,包括云层(CC)、可降水水汽(PWV)水平、海拔高度、大气温度和风速。我们的分析证实了南极洲的特殊性:每年平均有 361 天无云,可降水水汽值极低(0 毫米),平均海拔 2.300 米。稳定的大气风廓线进一步提高了天文观测的适宜性。此外,还对数据的长期趋势和相关性进行了研究。SIASA 数值表明,跨大西洋山脉的东部和内部地区非常适合天文观测,而沿海地区则被认为不太适合。在所有 SIASA 方案中,最佳站点覆盖了南极洲的 10%,其中圆顶 A、海脊 A 和圆顶 F 的数值在所有站点中最高。这些发现对于规划南极大陆未来的天文观测站点具有相当重要的意义。
Astronomical site selection for Antarctica with astro-meteorological parameters
The primary objective of this study is to employ Multi-Criteria Decision Analysis (MCDA) and Geographical Information System (GIS) techniques to identify and assess potential sites for astronomical observations in Antarctica. Our study focuses on the development of the Suitability Index for Astronomical Sites in Antarctica (SIASA). This index is formulated by merging data from satellites and models, providing extensive temporal and spatial coverage over two decades. To assess its suitability, we employed a combination of MCDA and GIS techniques, allowing us to evaluate various data, including cloud cover (CC), precipitable water vapor (PWV) levels, elevation, atmospheric temperature and wind speed. Our analysis confirmed the exceptional characteristics of Antarctica: An average of 361 cloud-free days per year, exceptionally low PWV values (0 mm), and an average elevation of 2.300 meters. The stable atmospheric wind profile further enhances its suitability for astronomical observations. Long-term trends and correlations of the data were also studied. SIASA values identified the eastern and inner parts of the Transatlantic Mountains as highly favorable for astronomical observations, while the coastal areas were considered less suitable. The best sites cover 10% of Antarctica in all SIASA scenarios, with Dome A, Ridge A and Dome F having the highest values of all stations. These findings hold considerable importance in planning future astronomical sites on the continent.
期刊介绍:
Many new instruments for observing astronomical objects at a variety of wavelengths have been and are continually being developed. Furthermore, a vast amount of effort is being put into the development of new techniques for data analysis in order to cope with great streams of data collected by these instruments.
Experimental Astronomy acts as a medium for the publication of papers of contemporary scientific interest on astrophysical instrumentation and methods necessary for the conduct of astronomy at all wavelength fields.
Experimental Astronomy publishes full-length articles, research letters and reviews on developments in detection techniques, instruments, and data analysis and image processing techniques. Occasional special issues are published, giving an in-depth presentation of the instrumentation and/or analysis connected with specific projects, such as satellite experiments or ground-based telescopes, or of specialized techniques.