G
Gayle S.W. Hagler
Researcher at United States Environmental Protection Agency
Publications - 59
Citations - 3988
Gayle S.W. Hagler is an academic researcher from United States Environmental Protection Agency. The author has contributed to research in topics: Air quality index & Air pollution. The author has an hindex of 28, co-authored 58 publications receiving 3067 citations. Previous affiliations of Gayle S.W. Hagler include Research Triangle Park & Georgia Institute of Technology.
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Journal ArticleDOI
The Changing Paradigm of Air Pollution Monitoring
Emily Gibb Snyder,Timothy H. Watkins,Paul A. Solomon,Eben D. Thoma,Ronald Williams,Gayle S.W. Hagler,David Shelow,David A. Hindin,Vasu Kilaru,Peter W. Preuss +9 more
TL;DR: Air pollution monitoring paradigm is rapidly changing due to recent advances in the development of portable, lower-cost air pollution sensors reporting data in near-real time at a high-time resolution, increased computational and visualization capabilities, and wireless communication/infrastructure.
Journal ArticleDOI
Applications of low-cost sensing technologies for air quality monitoring and exposure assessment: How far have they gone?
Lidia Morawska,Phong K. Thai,Xiaoting Liu,Akwasi Bonsu Asumadu-Sakyi,Godwin A. Ayoko,Alena Bartonova,Andrea Bedini,Fahe Chai,Bryce Christensen,Matthew Dunbabin,Jian Gao,Gayle S.W. Hagler,Rohan Jayaratne,Prashant Kumar,Alexis K.H. Lau,Peter K.K. Louie,Mandana Mazaheri,Zhi Ning,Nunzio Motta,Ben Mullins,Mahmudur Rahman,Zoran Ristovski,Mahnaz Shafiei,Dian Tjondronegoro,Dane Westerdahl,Ronald Williams +25 more
TL;DR: Over the past decade, a range of sensor technologies became available on the market, enabling a revolutionary shift in air pollution monitoring and assessment, and it can be argued that with a significant future expansion of monitoring networks, including indoor environments, there may be less need for wearable or portable sensors/monitors to assess personal exposure.
Journal ArticleDOI
Community Air Sensor Network (CAIRSENSE) project: Evaluation of low-cost sensor performance in a suburban environment in the southeastern United States
Wan Jiao,Gayle S.W. Hagler,Ron Williams,Robert Sharpe,Ryan Brown,Daniel Garver,Robert Judge,Motria Caudill,Joshua Rickard,Michael Davis,Lewis Weinstock,Susan Zimmer-Dauphinee,Ken Buckley +12 more
TL;DR: The performance of emerging air quality sensor technologies in a real-world setting is demonstrated; the variable agreement between sensors and reference monitors indicates that in situ testing of sensors against benchmark monitors should be a critical aspect of all field studies.
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Post-processing Method to Reduce Noise while Preserving High Time Resolution in Aethalometer Real-time Black Carbon Data
TL;DR: The Optimized Noisereduction Averaging (ONA) algorithm was developed to post-process data from the Aethalometer, one of the widely used real-time aerosol black carbon (BC) instruments as discussed by the authors.
Journal ArticleDOI
Source areas and chemical composition of fine particulate matter in the Pearl River Delta region of China
Gayle S.W. Hagler,Michael H. Bergin,Lynn G. Salmon,Jian Zhen Yu,E.C.H. Wan,Mei Zheng,Liwu Zeng,C. S. Kiang,Y.H. Zhang,Alexis K.H. Lau,James J. Schauer +10 more
TL;DR: In this paper, the authors measured fine particulate matter (PM2.5) for four months during 2002-2003 at seven sites located in the rapidly developing Pearl River Delta region of China, an area encompassing the major cities of Hong Kong, Shenzhen and Guangzhou.