Analytical Representations for Characterizing the Global Aviation Radiation Environment Based on Model and Measurement Databases
Analytical Representations for Characterizing the Global Aviation Radiation Environment Based on Model and Measurement Databases
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基于模型和测量数据库的全球航空辐射环境特征分析表示
DOI：
10.1029/2018sw001843
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发表时间：
2018
期刊：
影响因子：
3.7
通讯作者：
R. Fuschino
中科院分区：
文献类型：
--
作者：
W. Tobiska;L. Didkovsky;K. Judge;Seth Weiman;D. Bouwer;J. Bailey;B. Atwell;Molly K. Maskrey;C. Mertens;Yihua Zheng;M. Shea;D. Smart;B. Gersey;R. Wilkins;D. Bell;L. Gardner;R. Fuschino
航空安全大气电离辐射临近预报气候模式和航空航天安全自动辐射测量（ARMAS）统计数据库采用多项式拟合方程。使用基于高度、L壳层和地磁条件的方程，可以计算来自银河宇宙射线（GCR）环境的任何位置的有效剂量率。ARMAS数据库的一个子集表示的GCR加上可能的相对论高能粒子（REP;货车艾伦带REP）有效剂量率在一个狭窄的带L壳与海拔和地磁的依赖性的第二个多项式拟合方程。由于我们的数据库不包含这些事件，因此本研究不考虑太阳高能粒子事件。这项工作支持的建议，可能有一个REP的贡献，在航空高度的影响。ARMAS数据库有丰富的西半球L壳层1.5和5之间的观测数据;有许多可能与辐射带粒子的影响有关的辐射增强事件。我们的工作确定，在这个L壳层范围内的增强辐射环境的综合影响通常比GCR背景高15%。我们还确定了应用程序的方程代表航空安全和ARMAS数据库的大气电离辐射的临近预报。它们包括（一）与测量的天气变率相比较的有效剂量率气候学和（二）气候学和统计学的天气临近预报和预报。这些数据库可能特别有助于预测区域空中交通管理、机场飞越操作和单个飞机的航空承运人航线操作的辐射环境。
The Nowcast of Atmospheric Ionizing Radiation for Aviation Safety climatological model and the Automated Radiation Measurements for Aerospace Safety (ARMAS) statistical database are presented as polynomial fit equations. Using equations based on altitude, L shell, and geomagnetic conditions an effective dose rate for any location from a galactic cosmic ray (GCR) environment can be calculated. A subset of the ARMAS database is represented by a second polynomial fit equation for the GCR plus probable relativistic energetic particle (REP; Van Allen belt REP) effective dose rates within a narrow band of L shells with altitudinal and geomagnetic dependency. Solar energetic particle events are not considered in this study since our databases do not contain these events. This work supports a suggestion that there may be a REP contribution having an effect at aviation altitudes. The ARMAS database is rich in Western Hemisphere observations for L shells between 1.5 and 5; there have been many cases of enhanced radiation events possibly related to effects from radiation belt particles. Our work identifies that the combined effects of an enhanced radiation environment in this L shell range are typically 15% higher than the GCR background. We also identify applications for the equations representing the Nowcast of Atmospheric Ionizing Radiation for Aviation Safety and ARMAS databases. They include (i) effective dose rate climatology in comparison with measured weather variability and (ii) climatological and statistical weather nowcasting and forecasting. These databases may especially help predict the radiation environment for regional air traffic management, for airport overflight operations, and for air carrier route operations of individual aircraft.
DOI：
10.1002/2017sw001669
发表时间：
2018-01-01
影响因子：
3.7
作者：
Morley, S. K.;Brito, T. V.;Welling, D. T.
通讯作者：
Welling, D. T.