Deriving column-integrated thermospheric temperature with the N2 Lyman–Birge–Hopfield (2,0) band
Deriving column-integrated thermospheric temperature with the N2 Lyman–Birge–Hopfield (2,0) band
复制标题
使用 N2 Lyman-Birge-Hopfield (2,0) 频带导出柱积分热层温度
DOI：
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
T. Matsuo
中科院分区：
文献类型：
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作者：
C. Cantrall;T. Matsuo
抽象。本文介绍了一种利用天基远紫外气辉圆盘观测资料反演热层温度的新方法。该技术，从合成白天LBH盘排放的主成分分析的结果的指导下，使用的排放量在两个光谱通道，一起跨越莱曼-伯奇-霍普菲尔德（LBH）（2，0）带的比率，以确定相对于N2的旋转温度的变化带形状的变化。双通道比率方法的好处包括消除代表性误差，因为在推导过程中不需要绝对LBH强度，并且也不需要完全分辨系统，从而减少由LBH波段系统的仪器性能变化引起的系统测量误差的影响。研究表明，在不利用热层温度剖面先验信息的情况下，推导出的温度通常应解释为柱积分性质，而不是指定高度处的温度。使用2018年11月2日至8日期间NASA GOLD 1C级盘发射数据演示了双通道比率方法，在此期间发生了一场小型地磁暴。由于缺乏独立的热层温度观测，该方法的有效性进行了验证，通过比较的列积分温度来自GOLD 1C级数据与版本2的GOLD 2级温度产品，以及温度从第一原理和经验模型。风暴时的热层响应表现在列集成的温度也证实了半球集成焦耳加热速率，欧空局SWARM质量密度在460公里，和黄金2级列O / N2比。
Abstract. This paper presents a new technique to derive thermospheric temperature from space-based disk observations of far ultraviolet airglow. The technique, guided by findings from principal component analysis of synthetic daytime LBH disk emissions, uses a ratio of the emissions in two spectral channels that together span the Lyman–Birge–Hopfield (LBH) (2,0) band to determine the change in band shape with respect to a change in the rotational temperature of N2. The benefits of the two-channel ratio approach include an elimination of representativeness error as absolute LBH intensities are not required in the derivation procedure and a reduced impact of systematic measurement error caused by variations in the instrumental performance across the LBH band system as a fully resolved system is also not required. It is shown that the derived temperature should, in general, be interpreted as a column-integrated property as opposed to a temperature at a specified altitude without utilization of a priori information of the thermospheric temperature profile. The two-channel ratio approach is demonstrated using NASA GOLD Level 1C disk emission data for the period of 2–8 November 2018 during which a small geomagnetic storm has occurred. Due to the lack of independent thermospheric temperature observations, the efficacy of the approach is validated through comparisons of the column-integrated temperature derived from GOLD Level 1C data with version 2 of the GOLD Level 2 temperature product as well as temperatures from first principle and empirical models. The storm-time thermospheric response manifested in the column-integrated temperature is also shown to corroborate well with hemispherically integrated Joule heating rates, ESA SWARM mass density at 460 km, and GOLD Level 2 column O / N2 ratio.
高层大气辐射数据同化：GOLD 远紫外观测的可行性研究
DOI：
10.1029/2019ja026910
发表时间：
2019
期刊：
Journal of Geophysical Research: Space Physics
影响因子：
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作者：
Cantrall, Clayton E.;Matsuo, Tomoko;Solomon, Stanley C.
通讯作者：
Solomon, Stanley C.
高纬度电离层电动力学反演和数据同化程序的最新进展
DOI：
10.1007/978-3-030-26732-2_10
发表时间：
2020
期刊：
ISSI Scientific Report Series
影响因子：
--
作者：
Matsuo, T.
通讯作者：
Matsuo, T.
使用 N<sub>2</sub> LymanâBirgeâHopfieldâ (2,0) 频带导出柱积分热层温度
影响因子：
3.8
作者：
Cantrall, Clayton;Matsuo, Tomoko
通讯作者：
Matsuo, Tomoko