Results 31 to 40 of about 2,581 (194)

Studies of the horizontal inhomogeneities in NO2 concentrations above a shipping lane using ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements and validation with airborne imaging DOAS measurements [PDF]

, 2019
This study describes a novel application of an “onion-peeling” approach to multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements of shipping emissions aiming at investigating the strong horizontal inhomogeneities in NO2 over a ...
Burrows, John P., Kattner, Lisa, Mathieu-Üffing, Barbara, Meier, Andreas C., Peters, Enno, Richter, Andreas, Ruhtz, Thomas, Schmolke, Stefan, Schönhardt, Anja, Seyler, André, Wittrock, Folkard   +10 more
core   +1 more source

New concepts for the comparison of tropospheric NO₂ column densities derived from car-MAX-DOAS observations, OMI satellite observations and the regional model CHIMERE during two MEGAPOLI campaigns in Paris 2009/10 [PDF]

Atmospheric Measurement Techniques, 2015
We compare tropospheric column densities (vertically integrated concentrations) of NO2 from three data sets for the metropolitan area of Paris during two extensive measurement campaigns (25 days in summer 2009 and 29 days in winter 2010) within the ...
R. Shaiganfar, S. Beirle, H. Petetin, Q. Zhang, M. Beekmann, T. Wagner   +5 more
doaj   +1 more source

MAX-DOAS measurements of tropospheric NO₂ and HCHO in Munich and the comparison to OMI and TROPOMI satellite observations [PDF]

Atmospheric Measurement Techniques, 2020
We present two-dimensional scanning Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) observations of nitrogen dioxide (NO2) and formaldehyde (HCHO) in Munich.
K. L. Chan, M. Wiegner, J. van Geffen, I. De Smedt, C. Alberti, C. Alberti, Z. Cheng, S. Ye, M. Wenig   +8 more
doaj   +1 more source

Ground-based Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) observations of NO₂ and H₂CO at Kinshasa and comparisons with TROPOMI observations [PDF]

Atmospheric Measurement Techniques, 2023
We present a database of MAX-DOAS (Multi-AXis Differential Optical Absorption Spectroscopy) ground-based observations of NO2 and H2CO tropospheric vertical column densities (VCDtropo) performed for the first time in the city of Kinshasa.
R. Yombo Phaka, R. Yombo Phaka, A. Merlaud, G. Pinardi, M. M. Friedrich, M. Van Roozendael, J.-F. Müller, T. Stavrakou, I. De Smedt, F. Hendrick, E. Dimitropoulou, R. Bopili Mbotia Lepiba, E. Phuku Phuati, B. L. Djibi, L. Jacobs, C. Fayt, J.-P. Mbungu Tsumbu, E. Mahieu   +17 more
doaj   +1 more source

Retrieval of Total NO₂ Columns Using Direct-Sun Differential Optical Absorption Spectroscopy Measurements in Thessaloniki

Environmental Sciences Proceedings, 2023
The monitoring of trace gases in the troposphere has been routinely performed at the Laboratory of Atmospheric Physics, Thessaloniki, Greece, for a decade now, by multiple Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) instruments ...
Dimitrios Nikolis, Dimitris Karagkiozidis, Alkiviadis F. Bais   +2 more
doaj   +1 more source

Gas emission strength and evolution of the molar ratio of BrO/SO2 in the plume of Nyiragongo in comparison to Etna [PDF]

, 2015
Airborne and ground-based differential optical absorption spectroscopy observations have been carried out at the volcano Nyiragongo (Democratic Republic of Congo) to measure SO2 and bromine monoxide (BrO) in the plume in March 2004 and June 2007 ...
Aiuppa, Aiuppa, Aiuppa, Aiuppa, Aiuppa, Bobrowski, Bobrowski, Bobrowski, Bobrowski, Bobrowski, Boichu, Bureau, Carn, Chakrabarti, Delmelle, Dorf, Durieux, Ebinger, Fitzenberger, Galle, Galle, Gerlach, Gerlach, Gerlach, Giggenbach, Glasow, Glasow, Glasow, Glasow, Halmer, Honda, Horrocks, Hönninger, Kelly, Kern, Kitto, Komorowski, Kutterolf, Lary, Lazrus, Martin, Martin, Noguchi, Oppenheimer, Parrella, Pennisi, Pinto, Platt, Pundt, Pyle, Richter, Richter, Roberts, Robock, Rogers, Rogers, Saiz-Lopez, Salawitch, Sawyer, Schofield, Schofield, Sedlacek, Shinohara, Sturges, Surl, Symonds, Tazieff, Theys, Theys, Wennberg, Witt, Wittmer, Woods, Yang   +73 more
core   +1 more source

Study of NO₂ and HCHO vertical profile measurement based on fast synchronous multi-axis differential optical absorption spectroscopy (FS MAX-DOAS) [PDF]

Atmospheric Measurement Techniques
This study investigates a multi-elevation fast synchronous multi-axis differential optical absorption spectroscopy (FS MAX-DOAS) observation system that can rapidly acquire trace gas profiles.
J. Xu, J. Xu, A. Li, Z. Hu, H. Zhang, H. Zhang, M. Qin   +6 more
doaj   +1 more source

Atmospheric nitrogen oxides (NO and NO2) at Dome C, East Antarctica, during the OPALE campaign [PDF]

, 2014
Mixing ratios of the atmospheric nitrogen oxides NO and NO2 were measured as part of the OPALE (Oxidant Production in Antarctic Lands & Export) campaign at Dome C, East Antarctica (75.1 degrees S, 123.3 degrees E, 3233 m), during December 2011 to January
France, J. L., Frey, M. M., King, M. D., Kukui, A., Legrand, M., Preunkert, S., Roscoe, H. K., Savarino, J.   +7 more
core   +10 more sources

Measurement report: Aerosol vertical profiling over the Southern Great Barrier Reef using lidar and MAX-DOAS measurements [PDF]

Atmospheric Chemistry and Physics
Aerosol vertical profile measurements were made using a Multi-Axis Differential Optical Absorption Spectrometer (MAX-DOAS) and Mini Micro Pulse Lidar (MPL) at One Tree Island in the Southern Great Barrier Reef from February to April 2023.
R. G. Ryan, L. Toms-Hardman, A. Smirnov, A. Smirnov, D. P. Harrison, D. P. Harrison, R. Schofield   +6 more
doaj   +1 more source

Evaluation of MAX-DOAS aerosol retrievals by coincident observations using CRDS, lidar, and sky radiometer inTsukuba, Japan [PDF]

Atmospheric Measurement Techniques, 2015
Coincident aerosol observations of multi-axis differential optical absorption spectroscopy (MAX-DOAS), cavity ring-down spectroscopy (CRDS), lidar, and sky radiometer were conducted in Tsukuba, Japan, on 5–18 October 2010. MAX-DOAS aerosol retrieval (for
H. Irie, T. Nakayama, A. Shimizu, A. Yamazaki, T. Nagai, A. Uchiyama, Y. Zaizen, S. Kagamitani, Y. Matsumi   +8 more
doaj   +1 more source