Results 41 to 50 of about 368 (128)

MAX-DOAS observations of ship emissions in the North Sea

Marine Pollution Bulletin
Shipping emissions were measured in Dunkirk, France. Elevated aerosol extinction coefficients (AEC), nitrogen dioxide (NO2) and sulphur dioxide (SO2) were observed up to 500 m from surface. Formaldehyde (HCHO) did not show an increase every time, which suggests that oxidation of emitted volatile organic compounds (VOCs) took longer than the transport ...
Mahajan, Anoop, Tinel, Liselotte, Riffault, Véronique, Guilbaud, Sarah, D’anna, Barbara, Cuevas, Carlos, Saiz-Lopez, Alfonso   +6 more
openaire   +4 more sources

Observations of the vertical distributions of summertime atmospheric pollutants and the corresponding ozone production in Shanghai, China [PDF]

Atmospheric Chemistry and Physics, 2017
Ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) and lidar measurements were performed in Shanghai, China, during May 2016 to investigate the vertical distribution of summertime atmospheric pollutants.
C. Xing, C. Xing, C. Liu, C. Liu, C. Liu, C. Liu, C. Liu, S. Wang, K. L. Chan, Y. Gao, X. Huang, W. Su, C. Zhang, Y. Dong, G. Fan, T. Zhang, Z. Chen, Q. Hu, H. Su, H. Su, Z. Xie, Z. Xie, Z. Xie, Z. Xie, J. Liu, J. Liu   +25 more
doaj   +1 more source

Continuous multi-component MAX-DOAS observations for the planetary boundary layer ozone variation analysis at Chiba and Tsukuba, Japan, from 2013 to 2019

Progress in Earth and Planetary Science, 2021
Ground-based remote sensing using multi-axis differential optical absorption spectroscopy (MAX-DOAS) was used to conduct continuous simultaneous observations of ozone (O3), nitrogen dioxide (NO2), and formaldehyde (HCHO) concentrations at Chiba (35.63° N,
Hitoshi Irie, Daichi Yonekawa, Alessandro Damiani, Hossain Mohammed Syedul Hoque, Kengo Sudo, Syuichi Itahashi   +5 more
doaj   +1 more source

MAX-DOAS measurements of atmospheric trace gases in Ny-Ålesund [PDF]

, 2003
Abstract. A new approach to derive tropospheric concentrations of some atmospheric trace gases from ground-based UV/vis measurements is described. The instrument, referred to as the MAX-DOAS, is based on the well-known UV/vis instruments, which use the sunlight scattered in the zenith sky as the light source and the method of Differential Optical ...
Wittrock, F., Oetjen, H., Richter, A., Fietkau, S., Medeke, T., Rozanov, A., Burrows, J. P.   +6 more
openaire   +2 more sources

Retrieving tropospheric nitrogen dioxide from the Ozone Monitoring Instrument: effects of aerosols, surface reflectance anisotropy, and vertical profile of nitrogen dioxide [PDF]

Atmospheric Chemistry and Physics, 2014
Retrievals of tropospheric nitrogen dioxide (NO2) from the Ozone Monitoring Instrument (OMI) are subject to errors in the treatments of aerosols, surface reflectance anisotropy, and vertical profile of NO2.
J.-T. Lin, R. V. Martin, K. F. Boersma, M. Sneep, P. Stammes, R. Spurr, P. Wang, M. Van Roozendael, K. Clémer, H. Irie   +9 more
doaj   +1 more source

Towards a New MAX-DOAS Measurement Site in the Po Valley: NO₂ Total VCDs

Remote Sensing, 2022
Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) instruments are used worldwide to retrieve pollutant information from visible (VIS) and ultra-violet (UV) diffuse solar spectra.
Paolo Pettinari, Elisa Castelli, Enzo Papandrea, Maurizio Busetto, Massimo Valeri, Bianca Maria Dinelli   +5 more
doaj   +1 more source

Toward Predictable Nanomedicine: Current Forecasting Frameworks for Nanoparticle–Biology Interactions

Advanced Intelligent Discovery, EarlyView.
Predictive models successfully screen nanoparticles for toxicity and cellular uptake. Yet, complex biological dynamics and sparse, nonstandardized data limit their accuracy. The field urgently needs integrated artificial intelligence/machine learning, systems biology, and open‐access data protocols to bridge the gap between materials science and safe ...
Mariya L. Ivanova, Michael Nicholls, Nicola Russo, Gueorgui Mihaylov, Konstantin Nikolic   +4 more
wiley   +1 more source

Retrievals of formaldehyde from ground-based FTIR and MAX-DOAS observations at the Jungfraujoch station and comparisons with GEOS-Chem and IMAGES model simulations [PDF]

Atmospheric Measurement Techniques, 2015
As an ubiquitous product of the oxidation of many volatile organic compounds (VOCs), formaldehyde (HCHO) plays a key role as a short-lived and reactive intermediate in the atmospheric photo-oxidation pathways leading to the formation of
B. Franco, F. Hendrick, M. Van Roozendael, J.-F. Müller, T. Stavrakou, E. A. Marais, B. Bovy, W. Bader, C. Fayt, C. Hermans, B. Lejeune, G. Pinardi, C. Servais, E. Mahieu   +13 more
doaj   +1 more source

Epileptic arousals: A neglected clinical entity

Epilepsia, EarlyView.
Abstract Objective Epileptic arousals (EAs) are seizures characterized solely by arousal from sleep. EAs are unrecognized in current seizure classifications. Their subtle semiology and inconsistently detectable ictal activity in scalp electroencephalography (EEG) complicate differentiation from physiological arousals (PAs). This study characterizes EAs
Lea Fisel, Nóra Pető, Sotirios Kalousios, Nicolas Zabler, Armin Brandt, Peter C. Reinacher, Dieter Riemann, Mohammad F. Khazali, Andreas Schulze‐Bonhage   +8 more
wiley   +1 more source

Validation of OMI, GOME-2A and GOME-2B tropospheric NO₂, SO₂ and HCHO products using MAX-DOAS observations from 2011 to 2014 in Wuxi, China: investigation of the effects of priori profiles and aerosols on the satellite products [PDF]

Atmospheric Chemistry and Physics, 2017
Tropospheric vertical column densities (VCDs) of NO2, SO2 and HCHO derived from the Ozone Monitoring Instrument (OMI) on AURA and the Global Ozone Monitoring Experiment 2 aboard METOP-A (GOME-2A) and METOP-B (GOME-2B) are widely used to characterize the ...
Y. Wang, S. Beirle, J. Lampel, M. Koukouli, I. De Smedt, N. Theys, A. Li, D. Wu, P. Xie, C. Liu, M. Van Roozendael, T. Stavrakou, J.-F. Müller, T. Wagner   +13 more
doaj   +1 more source