Results 11 to 20 of about 368 (128)

Validation of MAX-DOAS retrievals of aerosol extinction, SO₂, and NO₂ through comparison with lidar, sun photometer, active DOAS, and aircraft measurements in the Athabasca oil sands region [PDF]

Atmospheric Measurement Techniques, 2020
Vertical profiles of aerosols, NO2, and SO2 were retrieved from Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) measurements at a field site in northern Alberta, Canada, during August and September 2013.
Z. Y. W. Davis, U. Frieß, K. B. Strawbridge, M. Aggarwaal, S. Baray, E. G. Schnitzler, A. Lobo, A. Lobo, V. E. Fioletov, I. Abboud, C. A. McLinden, J. Whiteway, M. D. Willis, M. D. Willis, A. K. Y. Lee, J. Brook, J. Brook, J. Olfert, J. O'Brien, R. Staebler, H. D. Osthoff, C. Mihele, R. McLaren   +22 more
doaj   +1 more source

Retrieval and evaluation of tropospheric-aerosol extinction profiles using multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements over Athens, Greece [PDF]

Atmospheric Measurement Techniques, 2021
In this study, we report on the retrieval of aerosol extinction profiles from ground-based scattered sunlight multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements, carried out at Athens, Greece.
M. Gratsea, M. Gratsea, T. Bösch, P. Kokkalis, P. Kokkalis, A. Richter, M. Vrekoussis, M. Vrekoussis, S. Kazadzis, S. Kazadzis, A. Tsekeri, A. Papayannis, M. Mylonaki, V. Amiridis, N. Mihalopoulos, N. Mihalopoulos, N. Mihalopoulos, E. Gerasopoulos   +17 more
doaj   +1 more source

Inversion of tropospheric profiles of aerosol extinction and HCHO and NO₂ mixing ratios from MAX-DOAS observations in Milano during the summer of 2003 and comparison with independent data sets [PDF]

Atmospheric Measurement Techniques, 2011
We present aerosol and trace gas profiles derived from MAX-DOAS observations. Our inversion scheme is based on simple profile parameterisations used as input for an atmospheric radiative transfer model (forward model).
U. Platt, X. Li, W. Junkermann, K. P. Heue, J. D. Halla, C. Hak, U. Frieß, T. Deutschmann, T. Brauers, T. Wagner, S. Beirle, I. Pundt-Gruber   +11 more
doaj   +1 more source

Report on the MAX-DOAS analysis chain

, 2023
This document is the report of the activities performed in the frame of the project "WPs-2250-2251: DOAS-BO: Towards a new FRM4DOAS-compliant site - Phase 2''. Here, we briefly introduce the facility of San Pietro Capofiume and the instruments within the site that we exploit for the activities foreseen in this project.
Pettinari, Paolo, Valeri, Massimo, Papandrea, Enzo, Castelli, Elisa, Di Liberto, Luca, Marinoni, Angela, Decesari, Stefano   +6 more
openaire   +2 more sources

Observations of Atmospheric NO₂ Using a New Low-Cost MAX-DOAS System

Atmosphere, 2020
This article describes the prototype of a new MAX-DOAS (multi-axis differential optical absorption spectroscopy) system built at “Dunarea de Jos” University of Galati (UGAL), Romania, and the first results of its use to observe NO2 content ...
Adrian Roşu, Daniel-Eduard Constantin, Mirela Voiculescu, Maxim Arseni, Alexis Merlaud, Michel Van Roozendael, Puiu Lucian Georgescu   +6 more
doaj   +1 more source

Measurement report: MAX-DOAS measurements characterise Central London ozone pollution episodes during 2022 heatwaves [PDF]

Atmospheric Chemistry and Physics, 2023
Heatwaves are a substantial health threat in the UK, exacerbated by co-occurrence of ozone pollution episodes. Here we report on the first use of retrieved vertical profiles of nitrogen dioxide (NO2) and formaldehyde (HCHO) over Central London from a ...
R. G. Ryan, R. G. Ryan, E. A. Marais, E. Gershenson-Smith, R. Ramsay, J.-P. Muller, J.-L. Tirpitz, U. Frieß   +7 more
doaj   +1 more source

MAX-DOAS measurements of tropospheric NO₂ and HCHO in Nanjing and a comparison to ozone monitoring instrument observations [PDF]

Atmospheric Chemistry and Physics, 2019
In this paper, we present long-term observations of atmospheric nitrogen dioxide (NO2) and formaldehyde (HCHO) in Nanjing using a Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) instrument.
K. L. Chan, Z. Wang, A. Ding, K.-P. Heue, Y. Shen, J. Wang, F. Zhang, Y. Shi, N. Hao, M. Wenig   +9 more
doaj   +1 more source

MAX-DOAS measurements of formaldehyde in the Po-Valley [PDF]

Atmospheric Chemistry and Physics, 2004
Abstract. During the first measurement campaign of the EU FORMAT project in summer 2002 near Milan, northern Italy, ground-based scattered light differential optical absorption spectroscopy (DOAS) measurements were performed using a new multi-axis instrument. From the data set of this four week measurement period, the detailed analysis results of three
Heckel, A., Richter, A., Tarsu, T., Wittrock, F., Hak, C., Pundt, I., Junkermann, W., Burrwos, J. P.   +7 more
openaire   +5 more sources

Comparison of tropospheric NO₂ columns from MAX-DOAS retrievals and regional air quality model simulations [PDF]

Atmospheric Chemistry and Physics, 2020
Multi-axis differential optical absorption spectroscopy (MAX-DOAS) tropospheric NO2 column retrievals from four European measurement stations are compared to simulations from five regional air quality models which contribute to the European regional ...
A.-M. Blechschmidt, J. Arteta, A. Coman, L. Curier, L. Curier, H. Eskes, G. Foret, C. Gielen, F. Hendrick, V. Marécal, F. Meleux, J. Parmentier, E. Peters, G. Pinardi, A. J. M. Piters, M. Plu, A. Richter, A. Segers, M. Sofiev, Á. M. Valdebenito, M. Van Roozendael, J. Vira, T. Vlemmix, J. P. Burrows   +23 more
doaj   +1 more source

Cloud and aerosol classification for 2.5 years of MAX-DOAS observations in Wuxi (China) and comparison to independent data sets [PDF]

Atmospheric Measurement Techniques, 2015
Multi-axis differential optical absorption spectroscopy (MAX-DOAS) observations of trace gases can be strongly influenced by clouds and aerosols. Thus it is important to identify clouds and characterize their properties.
Y. Wang, M. Penning de Vries, P. H. Xie, S. Beirle, S. Dörner, J. Remmers, A. Li, T. Wagner   +7 more
doaj   +1 more source