Concurrent multiaxis differential optical absorption spectroscopy system for the measurement of tropospheric nitrogen dioxide.
Concurrent multiaxis differential optical absorption spectroscopy system for the measurement of tropospheric nitrogen dioxide.
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DOI：
10.1364/ao.45.007504
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发表时间：
2006-10
期刊：
影响因子：
1.9
通讯作者：
R. Leigh;G. Corlett;U. Friess;P. Monks
中科院分区：
文献类型：
--
作者：
R. Leigh;G. Corlett;U. Friess;P. Monks
详细介绍了一种用于监测城市二氧化氮浓度快速变化的新型并行多轴(CMAX)天空观测光谱仪的研制。CMAX差分光学吸收光谱(DOAS)技术涉及空间分辨散射太阳光的天顶和离轴测量的同时光谱成像。使用已建立的DOAS技术从测量光谱中提取痕量气体数量。展示了CMAX DOAS技术在获取城市环境中NO2快速变化的浓度和空间分布信息方面的潜力。给出了2004年英国莱斯特(北纬52.62度，西经1.12度)对流层NO2测量的三个样本数据集。这些数据显示了CMAX DOAS方法在测量城市NO2实时空间分布的能力方面的当前能力和未来潜力。
The development of a new concurrent multiaxis (CMAX) sky viewing spectrometer to monitor rapidly changing urban concentrations of nitrogen dioxide is detailed. The CMAX differential optical absorption spectroscopy (DOAS) technique involves simultaneous spectral imaging of the zenith and off-axis measurements of spatially resolved scattered sunlight. Trace-gas amounts are retrieved from the measured spectra using the established DOAS technique. The potential of the CMAX DOAS technique to derive information on rapidly changing concentrations and the spatial distribution of NO2 in an urban environment is demonstrated. Three example data sets are presented from measurements during 2004 of tropospheric NO2 over Leicester, UK (52.62 degrees N, 1.12 degrees W). The data demonstrate the current capabilities and future potential of the CMAX DOAS method in terms of the ability to measure real-time spatially disaggregated urban NO2.