Results 31 to 40 of about 690,046 (203)

Mini MAX-DOAS measurements of air pollutants over China

, 2016
This study continues the work of Clémer et al. (2010) and is aimed to improve trace gas retrievals with mini MAX-DOAS measurements in Nanjing. Based on that work, Aerosol extinction vertical profiles are retrieved using the bePRO inversion algorithm ...
Städt, Steffen
openaire   +2 more sources

MAX-DOAS retrievals of formaldehyde (HCHO) and nitrogen dioxide (NO2) vertical profiles over Central London

, 2022
Compressed zipped files of MAX-DOAS measurements at the Central London University College London monitoring site from 1 July to 30 September 2022.  Includes three compressed files of daily MAX-DOAS observations of HCHO, NO2, and O4 in NetCDF format. Each
Robert Ryan (9729227), Eleanor Smith (13857026), Eloise Marais (9047381), Udo Frieß (8012963), Jan-Lukas Tirpitz (6451505)   +4 more
core   +1 more source

Retrieval of atmospheric trace gases from DOAS/MAX-DOAS ground-based spectra [PDF]

, 2023
The study of the atmospheric chemical composition is crucial to understand the climate changes that we are experiencing in the last decades and to monitor the air quality over industrialized areas.
Pettinari, Paolo <1993>
core   +1 more source

Retrieval of tropospheric ozone profiles using ground-based MAX-DOAS

Science of The Total Environment, 2023
In recent years, surface ozone concentrations have increased in many cities in China. Ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) is a powerful technique for retrieving the profiles of tropospheric trace gases, such as NO2, SO2, and HCHO. However, since the difficulties in deducting the effects of stratospheric ozone,
Yuanyuan, Qian, Yuhan, Luo, Ke, Dou, Haijin, Zhou, Liang, Xi, Taiping, Yang, Tianshu, Zhang, Fuqi, Si   +7 more
openaire   +2 more sources

Retrieval of NO2 Columns by Exploiting MAX-DOAS Observations and Comparison with OMI and TROPOMI Data during the Time Period of 2015–2019

Aerosol and Air Quality Research, 2022
Nitrogen dioxide (NO2)—a criteria major air pollutant, is of paramount importance due to its role in atmospheric chemistry and tropospheric ozone formation. Exposure to high concentrations of NO2 has been reported to cause various health issues in humans.
Ahmad Iqbal, Naveed Ahmad, Hassan Mohy ud Din, Michel Van Roozendael, Muhammad Shehzaib Anjum, Muhammad Zeeshan Ali Khan, Muhammad Fahim Khokhar   +6 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

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

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

First MAX‐DOAS Observations of Formaldehyde and Glyoxal in Phimai, Thailand [PDF]

Journal of Geophysical Research: Atmospheres, 2018
AbstractMultiaxis differential optical absorption spectroscopy (MAX‐DOAS) observations were performed for the first time in Thailand at the rural site of Phimai (15.18°N, 102.56°E). Vertical profiles of eight components were retrieved separately using the Japanese MAX‐DOAS profile retrieval algorithm, version 2.
H. M. S. Hoque, H. Irie, A. Damiani
openaire   +1 more source