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王婷, 王普才, 余环, 孙丽. 华北地区香河站对流层NO2的MAX-DOAS光谱仪观测及变化特征分析[J]. 气候与环境研究, 2014, 19(1): 51-60. DOI: 10.3878/j.issn.1006-9585.2012.12131
引用本文: 王婷, 王普才, 余环, 孙丽. 华北地区香河站对流层NO2的MAX-DOAS光谱仪观测及变化特征分析[J]. 气候与环境研究, 2014, 19(1): 51-60. DOI: 10.3878/j.issn.1006-9585.2012.12131
WANG Ting, WANG Pucai, YU Huan, SUN Li. Analysis of the Characteristics of Tropospheric NO2 in Xianghe Based on MAX-DOAS Measurement[J]. Climatic and Environmental Research, 2014, 19(1): 51-60. DOI: 10.3878/j.issn.1006-9585.2012.12131
Citation: WANG Ting, WANG Pucai, YU Huan, SUN Li. Analysis of the Characteristics of Tropospheric NO2 in Xianghe Based on MAX-DOAS Measurement[J]. Climatic and Environmental Research, 2014, 19(1): 51-60. DOI: 10.3878/j.issn.1006-9585.2012.12131

华北地区香河站对流层NO2的MAX-DOAS光谱仪观测及变化特征分析

Analysis of the Characteristics of Tropospheric NO2 in Xianghe Based on MAX-DOAS Measurement

  • 摘要: 利用中国科学院大气物理研究所香河大气探测综合试验站2010年3月至2012年2月(2年)的多轴差分吸收光谱仪(MAX-DOAS)观测数据和32 m高塔常规气象资料,反演了华北地区香河站对流层NO2柱浓度,分析了该区域NO2柱浓度的季节变化特征。研究表明:可见光455~485 nm、紫外330~370 nm都可以作为MAX-DOAS工作波段很好地反演NO2;香河地区NO2柱浓度夏季最低,几乎保持在2×1016 cm-2以下,春、秋季次之,在3×1016 cm-2上下小范围浮动,冬季最高,可达4.5×1016 cm-2;月平均最低值出现在7月,最高值出现在11月。NO2柱浓度与风速、风向密切相关:来自东边唐山方向的风,风速越大时NO2浓度越高,因为唐山是NO2的高值区之一;其它方向风速越大,浓度越低。春、夏两季NO2柱浓度日变化趋势比较平缓,秋、冬两季日变化明显,秋季正午偏高,冬季早晚偏高。

     

    Abstract: Based on the measurements by Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) and the 32-m meteorological tower at Xianghe station of Atmospheric Comprehensive Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences (Xianghe: 39.77°N, 117.0°E), from March 2010 to February 2012, the tropospheric vertical column density (VCD) of NO2 in Xianghe was retrieved and its seasonal characteristics were analyzed. The results show that MAX-DOAS is an effective method for measuring NO2 VCD, which can be well retrieved from wavelength intervals of 455-485 nm in the visible and 330-370 nm in the UV range. NO2 VCD in Xianghe has an obvious seasonal variation, with its monthly mean being maximum in winter (November) and minimum in summer (July). The variation of NO2 VCD is closely related to solar radiation intensity, source emission, atmospheric stability, and wind. Higher values of NO2 VCD are observed in the eastern part of the region; the diurnal variation of NO2 VCD is obvious in autumn and winter.

     

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