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Evaluation and measurement of tropospheric glyoxal retrieved from MAX-DOAS in Shenzhen, China
Science of The Total Environment, 2023Glyoxal is one of the representative oxygenated volatile organic compounds in the atmosphere. Its accurate measurement has high significance for the determination of VOC emission sources and the calculation of the global budget of secondary organic aerosol.
Hairong, Zhang +8 more
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Validation of a MAX-DOAS instrument-based cloud classification algorithm
2023A major challenge in Differential Optical Absorption Spectroscopy (DOAS) is the characterization of the light path. For the determination of the light path length, cloud conditions are essential. While instruments like a LIDAR/ceilometer provide information on cloud base height in zenith direction, it is often quite challenging to obtain information on
Lucas Reischmann +5 more
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Towards tomographical MAX DOAS profile retrieval: sensitivity studies
2023The ground-based Multiple Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) measurement technique is of high interest to measure local scale pollution events like trace gas plumes above cities or power plants. Besides vertical column densities and especially for the comparison with in-situ measurements and model simulations, vertical ...
Janis Pukite +6 more
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Atmospheric Environment, 2011
Abstract A measurement method combining multi-axis differential optical absorption spectroscopy (MAX-DOAS) and a transmissometer (TX) is introduced as a means of retrieving surface trace gas mixing ratios in ambient air. The combined measurement method was utilized to derive surface NO2 mixing ratios from 27 March to 11 May 2007 in Seoul, Korea.
Hanlim Lee, Jhoon Kim, Youngmin Noh
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Abstract A measurement method combining multi-axis differential optical absorption spectroscopy (MAX-DOAS) and a transmissometer (TX) is introduced as a means of retrieving surface trace gas mixing ratios in ambient air. The combined measurement method was utilized to derive surface NO2 mixing ratios from 27 March to 11 May 2007 in Seoul, Korea.
Hanlim Lee, Jhoon Kim, Youngmin Noh
exaly +2 more sources
[MAX-DOAS Tomography Reconstruction for Gas Plume].
Guang pu xue yu guang pu fen xi = Guang pu, 2015In order to achieve precisely two-dimensional spatial distribution reconstruction of smoke plume, passive MAX-DOAS tomography is established, the measurement of the spatial distribution of the exhaust plume is implemented by more passive multi-axis differential absorption spectrum system.
Min-hong, Wei +3 more
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Ground-based MAX-DOAS observations of formaldehyde and glyoxal in Xishuangbanna, China
Journal of Environmental SciencesMulti-axial differential optical absorption spectroscopy (MAX-DOAS) measurements were conducted in Xishuangbanna, Yunnan, China, between November 1, 2021 and June 30, 2022 to obtain vertical distributions of formaldehyde (HCHO) and glyoxal (CHOCHO). The observations show an increase in vertical column densities (VCDs) and volume mixing ratios (VMRs ...
Yu Zhang +6 more
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MAX-DOAS observations of spatial variability of NO2 in Athens
Nitrogen dioxide is a key pollutant in the troposphere. Most of its sources are anthropogenic and linked to the burning of fossil fuels, but wildfires, lightning and soil emissions also contribute to the overall NOx (NO + NO2) loading.Using passive remote sensing in the UV and visible spectral range, NO2 columns can be retrieved with both ground-based ...Andreas Richter +6 more
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MAX-DOAS measurements of air pollution on the northern tip of Taiwan
Wind and weather in Taiwan are strongly influenced by the monsoons. Taiwan is on the lee side of the Asian winter monsoon, originating on the Asian continent. It receives continental air masses transported by the monsoon, thus air pollutants originating in the eastern and northern parts of China. While polluted air reaches Taiwan during winter monsoon,André Seyler +12 more
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Journal of Environmental Sciences
Studying the spatiotemporal distribution and transboundary transport of aerosols, NO2, SO2, and HCHO in typical regions is crucial for understanding regional pollution causes. In a 2-year study using multi-axis differential optical absorption spectroscopy in Qingdao, Shanghai, Xi'an, and Kunming, we investigated pollutant distribution and transport ...
Hongmei Ren +7 more
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Studying the spatiotemporal distribution and transboundary transport of aerosols, NO2, SO2, and HCHO in typical regions is crucial for understanding regional pollution causes. In a 2-year study using multi-axis differential optical absorption spectroscopy in Qingdao, Shanghai, Xi'an, and Kunming, we investigated pollutant distribution and transport ...
Hongmei Ren +7 more
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MAX-DOAS Measurements in Rural and Suburban regions of New Zealand
New Zealand is primarily made of two islands with a total population of around 5 Million.  The smaller North Island contains a higher population including New Zealand's largest city of Auckland with approximately 1.5 million residents, while the larger South Island contains a much smaller population and is largely rural.  Lauder on ...Jamie Halla, Richard Querel
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