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arXiv 1402.4782astro-ph.IM
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Cosmic Ray探测器的全球大气模式

Global Atmospheric Models for Cosmic Ray Detectors

Martin Will

摘要:

大气参数的知识-如温度,压力和湿度-是非常重要的空气簇射的正确重建,特别是与荧光技术。全球数据同化系统(GDAS)提供了这些大气状态变量和其他几个变量随高度变化的分布图。每隔三小时,全球就有一个新的数据集,包括23个恒定气压水平和一个额外的表面值。这些GDAS数据现在用于皮埃尔俄歇天文台的标准空气簇射重建。通过与从现场气象无线电探测和在马拉圭观测站获得的气象站测量值平均得到的月模型进行比较,验证了数据的有效性。利用GDAS数据和月模型重建的比较。由于GDAS是一个全球模型,因此数据可能用于其他宇宙和伽马射线探测器。已经在全球多个地点进行或正在进行多项研究。作为一个例子,在科罗拉多州进行的一项研究,作为一个可能的未来宇宙射线天文台的大气R&D的一部分。

英文摘要:

The knowledge of atmospheric parameters -- such as temperature, pressure, and humidity -- is very important for a proper reconstruction of air showers, especially with the fluorescence technique. The Global Data Assimilation System (GDAS) provides altitude-dependent profiles of these state variables of the atmosphere and several more. Every three hours, a new data set on 23 constant pressure level plus an additional surface values is available for the entire globe. These GDAS data are now used in the standard air shower reconstruction of the Pierre Auger Observatory. The validity of the data was verified by comparisons with monthly models that were averaged from on-site meteorological radio soundings and weather station measurements obtained at the Observatory in Malargüe. Comparisons of reconstructions using the GDAS data and the monthly models are also presented. Since GDAS is a global model, the data can potentially be used for other cosmic and gamma ray detectors. Several studies were already performed or are underway for several locations worldwide. As an example, a study performed in Colorado as part of an Atmospheric R&D for a possible future cosmic ray observatory is presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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