Next Article in Journal
Application of Convective Condensation Level Limiter in Convective Boundary Layer Height Retrieval Based on Lidar Data
Next Article in Special Issue
Air Quality and Control Measures Evaluation during the 2014 Youth Olympic Games in Nanjing and its Surrounding Cities
Previous Article in Journal
Using Satellite and Lightning Data to Track Rapidly Developing Thunderstorms in Data Sparse Regions
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle
Atmosphere 2017, 8(4), 78;

Mobile DOAS Observations of Tropospheric NO2 Using an UltraLight Trike and Flux Calculation

European Center of Excellence for the Environment, Faculty of Sciences and Environment, “Dunarea de Jos” University of Galati, Str. Domneasca 111, Galati 800008, Romania
Royal Belgian Institute for Space Aeronomy, Ringlaan-3-Avenue Circulaire, B-1180 Brussels, Belgium
Author to whom correspondence should be addressed.
Academic Editors: Pius Lee, Rick Saylor and Jeff McQueen
Received: 24 February 2017 / Revised: 18 April 2017 / Accepted: 19 April 2017 / Published: 22 April 2017
(This article belongs to the Special Issue Air Quality Monitoring and Forecasting)
Full-Text   |   PDF [1728 KB, uploaded 22 April 2017]   |  


In this study, we report on airborne Differential Optical Absorption Spectroscopy (DOAS) observations of tropospheric NO2 using an Ultralight Trike (ULT) and associated flux calculations. The instrument onboard the ULT was developed for measuring the tropospheric NO2 Vertical Column Density (VCD) and it was operated for several days between 2011 and 2014, in the South-East of Romania. Collocated measurements were performed using a car-DOAS instrument. Most of the airborne and mobile ground-based measurements were performed close to an industrial platform located nearby Galati city (45.43° N, 28.03° E). We found a correlation of R = 0.71 between tropospheric NO2 VCDs deduced from airborne DOAS observations and mobile ground-based DOAS observations. We also present a comparison between stratospheric NO2 Slant Column Density (SCD) derived from the Dutch OMI NO2 (DOMINO) satellite data product and stratospheric SCDs obtained from ground and airborne measurements. The airborne DOAS observations performed on 13 August 2014 were used to quantify the NO2 flux originating from an industrial platform located nearby Galati city. Measurements during a flight above the industrial plume showed a maximum tropospheric NO2 VCD of (1.41 ± 0.27) × 1016 molecules/cm2 and an associated NO2 flux of (3.45 ± 0.89) × 10−3 kg/s. View Full-Text
Keywords: mobile DOAS; airborne observations; nitrogen dioxide; emission flux mobile DOAS; airborne observations; nitrogen dioxide; emission flux

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
Printed Edition Available!
A printed edition of this Special Issue is available here.

Share & Cite This Article

MDPI and ACS Style

Constantin, D.-E.; Merlaud, A.; Voiculescu, M.; Dragomir, C.; Georgescu, L.; Hendrick, F.; Pinardi, G.; Van Roozendael, M. Mobile DOAS Observations of Tropospheric NO2 Using an UltraLight Trike and Flux Calculation. Atmosphere 2017, 8, 78.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Atmosphere EISSN 2073-4433 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top