Evaluating different methods for elevation calibration of MAX-DOAS (Multi AXis Differential Optical Absorption Spectroscopy) instruments during the CINDI-2 campaign

doi:10.5194/amt-13-685-2020

	Evaluating different methods for elevation calibration of MAX-DOAS (Multi AXis Differential Optical Absorption Spectroscopy) instruments during the CINDI-2 campaign
	Donner, Sebastian 13; Kuhn, Jonas 13,14; Van Roozendael, Michel 3; Bais, Alkiviadis 4; Beirle, Steffen 13; Boesch, Tim 2; Bognar, Kristof 1; Bruchkouski, Ilya 5; Chan, Ka Lok 6; Doerner, Steffen 13
刊名	ATMOSPHERIC MEASUREMENT TECHNIQUES
	2020-02-13
卷号	13
ISSN号	1867-1381
DOI	10.5194/amt-13-685-2020
通讯作者	Donner, Sebastian(sebastian.donner@mpic.de)
英文摘要	We present different methods for in-field elevation calibration of MAX-DOAS (Multi AXis Differential Optical Absorption Spectroscopy) instruments that were applied and inter-compared during the second Cabauw Intercomparison campaign for Nitrogen Dioxide measuring Instruments (CINDI-2). One necessary prerequisite of consistent MAX-DOAS retrievals is a precise and accurate calibration of the elevation angles of the different measuring systems. Therefore, different methods for this calibration were applied to several instruments during the campaign, and the results were inter-compared. This work first introduces and explains the different methods, namely far- and near-lamp measurements, white-stripe scans, horizon scans and sun scans, using data and results for only one (mainly the Max Planck Institute for Chemistry) instrument. In the second part, the far-lamp measurements and the horizon scans are examined for all participating groups. Here, the results for both methods are first inter-compared for the different instruments; secondly, the two methods are compared amongst each other. All methods turned out to be well-suited for the calibration of the elevation angles of MAX-DOAS systems, with each of them having individual advantages and drawbacks. Considering the results of this study, the systematic uncertainties of the methods can be estimated as +/- 0.05 degrees for the far-lamp measurements and the sun scans, +/- 0.25 degrees for the horizon scans, and around +/- 0.1 degrees for the white-stripe and near-lamp measurements. When comparing the results of far-lamp and horizon-scan measurements, a spread of around 0.9 degrees in the elevation calibrations is found between the participating instruments for both methods. This spread is of the order of a typical field of view (FOV) of a MAX-DOAS instrument and therefore affecting the retrieval results. Further, consistent (wavelength dependent) offsets of 0.32 degrees and 0.40 degrees between far-lamp measurements and horizon scans are found, which can be explained by the fact that, despite the flat topography around the measurement site, obstacles such as trees might mark the visible horizon during daytime. The observed wavelength dependence can be explained by surface albedo effects. Lastly, the results are discussed and recommendations for future campaigns are given.
资助项目	ESA through the CINDI-2[4000118533/16/I-Sbo] ; ESA through the FRM4DOAS[4000118181/16/IEF] ; EU 7 Framework Programme QA4ECV[607405] ; Austrian Science Fund (FWF)[I 2296-N29] ; Canadian Space Agency (AVATARS project) ; Natural Sciences and Engineering Research Council (PAHA project) ; Canada Foundation for Innovation
WOS关键词	SLANT COLUMN MEASUREMENTS ; ATMOSPHERIC AEROSOLS ; DERIVE INFORMATION ; NITROGEN-DIOXIDE ; PROFILES ; NO2 ; FORMALDEHYDE ; EXTINCTION ; RETRIEVAL ; AIR
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000514150700001
资助机构	ESA through the CINDI-2 ; ESA through the FRM4DOAS ; EU 7 Framework Programme QA4ECV ; Austrian Science Fund (FWF) ; Canadian Space Agency (AVATARS project) ; Natural Sciences and Engineering Research Council (PAHA project) ; Canada Foundation for Innovation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103891]
专题	中国科学院合肥物质科学研究院
通讯作者	Donner, Sebastian
作者单位	1.Univ Toronto, Dept Phys, Toronto, ON, Canada 2.Univ Bremen, Inst Environm Phys, Bremen, Germany 3.BIRA IASB Royal Belgian Inst Space Aeron, Brussels, Belgium 4.Aristotle Univ Thessaloniki, Lab Atmospher Phys, Thessaloniki, Greece 5.BSU, Natl Ozone Monitoring Res & Educ Ctr, Minsk, BELARUS 6.Ludwig Maximilians Univ Munchen, Meteorol Inst, Munich, Germany 7.CMA Meteorol Observat Ctr, Beijing, Peoples R China 8.Anhui Inst Opt & Fine Mech, Hefei, Peoples R China 9.Chinese Acad Meteorol Sci, Beijing, Peoples R China 10.Univ Nat Resources & Life Sci, Inst Meteorol, Vienna, Austria
推荐引用方式 GB/T 7714	Donner, Sebastian,Kuhn, Jonas,Van Roozendael, Michel,et al. Evaluating different methods for elevation calibration of MAX-DOAS (Multi AXis Differential Optical Absorption Spectroscopy) instruments during the CINDI-2 campaign[J]. ATMOSPHERIC MEASUREMENT TECHNIQUES,2020,13.
APA	Donner, Sebastian.,Kuhn, Jonas.,Van Roozendael, Michel.,Bais, Alkiviadis.,Beirle, Steffen.,...&Wagner, Thomas.(2020).Evaluating different methods for elevation calibration of MAX-DOAS (Multi AXis Differential Optical Absorption Spectroscopy) instruments during the CINDI-2 campaign.ATMOSPHERIC MEASUREMENT TECHNIQUES,13.
MLA	Donner, Sebastian,et al."Evaluating different methods for elevation calibration of MAX-DOAS (Multi AXis Differential Optical Absorption Spectroscopy) instruments during the CINDI-2 campaign".ATMOSPHERIC MEASUREMENT TECHNIQUES 13(2020).