Emission Flux Measurement Error with a Mobile DOAS System and Application to NOx Flux Observations
Sensors, 2017 Mobile differential optical absorption spectroscopy (mobile DOAS) is an optical remote sensing method that can rapidly measure trace gas emission flux from air pollution sources (such as power plants, industrial areas, and cities) in real time. Generally,
Ang Li, Zhaokun Hu, Jianguo Liu
exaly +3 more sources
Multi axis differential optical absorption spectroscopy (MAX-DOAS) [PDF]
Atmospheric Chemistry and Physics, 2004 Multi Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) in the atmosphere is a novel measurement technique that represents a significant advance on the well-established zenith scattered sunlight DOAS instruments which are mainly sensitive to
G. Hönninger +3 more
exaly +1 more source
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 +22 more
doaj +1 more source
Off-Grid DoA Estimation via Two-Stage Cascaded Neural Network
Energies, 2021 This paper introduces an off-grid DoA estimation via two-stage cascaded network which can resolve a mismatch between true direction-of-arrival (DoA) and discrete angular grid.
Hyeonjin Chung +4 more
doaj +1 more source
Total water vapour columns derived from Sentinel 5P using the AMC-DOAS method [PDF]
Atmospheric Measurement Techniques, 2022 Water vapour is the most abundant natural greenhouse gas in the Earth's atmosphere, and global data sets are required for meteorological applications and climate research.
T. Küchler +8 more
doaj +1 more source
Soil–vegetation moisture capacitor maintains dry season vegetation productivity over India
Scientific Reports, 2023 India receives more than 70% of its annual rainfall in the summer monsoon from June to September. The rainfall is scanty and scattered for the rest of the year.
Dawn E. Sebastian +2 more
doaj +1 more source
Asia Europe Journal, 2021 The Comprehensive Agreement on Investment (CAI) that was borne but not formally blessed by China and the European Union in late December 2020 is unlikely to survive in its current form, if it survives at all. In fact, there is good reason to believe that the CAI is DOA - dead on arrival - due to EU sanctions and Chinese countersanctions related to ...
openaire +2 more sources
Mobile MAX-DOAS observations of tropospheric trace gases [PDF]
Atmospheric Measurement Techniques, 2010 From Multi-Axis- (MAX-) DOAS observations, information on tropospheric trace gases close to the surface and up to the free troposphere can be obtained. Usually MAX-DOAS observations are performed at fixed locations, which allows to retrieve the diurnal ...
T. Wagner +3 more
doaj +1 more source
MAX-DOAS and OMI Measurements of Tropospheric NO2 and HCHO over Eastern China [PDF]
Journal of Geodesy and Geoinformation Science, 2020 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.
Ka-Lok CHAN,Zhuoru WANG,Aijun DING,Klaus-Peter HEUE,Nan HAO,Mark WENIG
doaj +1 more source
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 +6 more
doaj +1 more source