Results 11 to 20 of about 11,339,588 (238)

AirFocus (Online); Air focus; AirFocus

, 2005
Annual, 2007-; Quarterly, -Fall 2006; Electronic coverage as of Sept. 18, 2009: Issue Fall 2005-issue Fall 2006; issue 1, 2007-; "News you can use from the Ohio Air Quality Development Authority."; Description based on: Issue Fall 2005, title from ...

core   +16 more sources

Surveillance-image-based outdoor air quality monitoring [PDF]

Environmental Science and Ecotechnology
Air pollution threatens human health, necessitating effective and convenient air quality monitoring. Recently, there has been a growing interest in using camera images for air quality estimation.
Xiaochu Wang, Meizhen Wang, Xuejun Liu, Ying Mao, Yang Chen, Songsong Dai   +5 more
doaj   +2 more sources

Evidential Value of Defra Air Quality Compliance Monitoring

, 2015
The Evidential value of Defra air quality compliance monitoring report, prepared by the Air Quality Expert Group (AQEG) for Defra and the Devolved Administrations looks at the range of activities that Defra's air quality monitoring networks support ...
Air Quality Expert Group
core   +5 more sources

Sources of particulate matter components in the Athabasca oil sands region: investigation through a comparison of trace element measurement methodologies [PDF]

Atmospheric Chemistry and Physics, 2017
The province of Alberta, Canada, is home to three oil sands regions which, combined, contain the third largest deposit of oil in the world. Of these, the Athabasca oil sands region is the largest.
C. Phillips-Smith, C.-H. Jeong, R. M. Healy, E. Dabek-Zlotorzynska, V. Celo, J. R. Brook, G. Evans   +6 more
doaj   +1 more source

An in situ flow tube system for direct measurement of N₂O₅ heterogeneous uptake coefficients in polluted environments [PDF]

Atmospheric Measurement Techniques, 2018
The heterogeneous reactivity of dinitrogen pentoxide (N2O5) on ambient aerosols plays a key role in the atmospheric fate of NOx and formation of secondary pollutants.
W. Wang, Z. Wang, C. Yu, C. Yu, M. Xia, X. Peng, Y. Zhou, D. Yue, Y. Ou, T. Wang   +9 more
doaj   +1 more source

Ozone pollution around a coastal region of South China Sea: interaction between marine and continental air [PDF]

Atmospheric Chemistry and Physics, 2018
Marine atmosphere is usually considered to be a clean environment, but this study indicates that the near-coast waters of the South China Sea (SCS) suffer from even worse air quality than coastal cities.
H. Wang, H. Wang, X. Lyu, X. Lyu, H. Guo, Y. Wang, S. Zou, Z. Ling, X. Wang, F. Jiang, Y. Zeren, W. Pan, X. Huang, J. Shen   +13 more
doaj   +1 more source

Organic aerosol source apportionment by using rolling positive matrix factorization: Application to a Mediterranean coastal city

Atmospheric Environment: X, 2022
We investigated the contributions and the evolution of organic aerosol (OA) sources at the Marseille-Longchamp supersite (MRS-LCP, France) based on Time-of-flight Aerosol Chemical Speciation Monitor (ToF-ACSM) measurements of non-refractory PM1 over a ...
Benjamin Chazeau, Imad El Haddad, Francesco Canonaco, Brice Temime-Roussel, Barbara D'Anna, Grégory Gille, Boualem Mesbah, André S.H. Prévôt, Henri Wortham, Nicolas Marchand   +9 more
doaj   +1 more source

Air quality monitoring. Meeting the requirements on Long-range Transboundary Air Pollution

, 2009
This article considers air quality monitoring in the UK, in particular its role in meeting the requirements of the Convention on Long-range Transboundary Air Pollution.
MacKechnie, Colin, Cape, Neil, Mills, Gina   +2 more
core   +4 more sources

The CarbonTracker Data Assimilation System for CO₂ and δ¹³C (CTDAS-C13 v1.0): retrieving information on land–atmosphere exchange processes [PDF]

Geoscientific Model Development, 2018
To improve our understanding of the global carbon balance and its representation in terrestrial biosphere models, we present here a first dual-species application of the CarbonTracker Data Assimilation System (CTDAS).
I. R. van der Velde, I. R. van der Velde, I. R. van der Velde, J. B. Miller, M. K. van der Molen, P. P. Tans, B. H. Vaughn, J. W. C. White, K. Schaefer, W. Peters, W. Peters   +10 more
doaj   +1 more source

Evaluating machine learning model performance in a two-step colocation process for TVOC and BTEX sensor calibration [PDF]

Atmospheric Measurement Techniques
Calibration of low-cost air quality sensors (LCSs) for total volatile organic compound (TVOC) and benzene, toluene, ethylbenzene, and xylenes (BTEX) quantification remains challenging due to the sensors' cross-sensitivity to temperature and humidity and ...
C. Frischmon, J. Porter, E. Balagopalan, W. Senga, J. Johnston, M. Hannigan   +5 more
doaj   +1 more source