Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Jorn D, Herner"'
Autor:
Christopher R. Ruehl, Tao Huai, Jorn D. Herner, Sharon Lemieux, Elena Florea, Seungju Yoon, Shaohua Hu, Tom Montes, Paul Henderick, Yi Tan, William H. Robertson, Jenna Latt, Abraham Lee
Publikováno v:
Environmental Science & Technology. 55:13657-13665
This work evaluated the nitrogen oxide (NOx) emissions of 277 heavy-duty diesel vehicles (HDDVs) from three portable emission measurement system testing programs. HDDVs in these programs were properly maintained before emission testing, so the malfun
Autor:
Paul Henderick, Kanok Boriboonsomsin, Yi Tan, Seungju Yoon, Thomas Montes, Kent C. Johnson, Thomas D. Durbin, Daniel Sandez, Jorn D. Herner, George Scora
Publikováno v:
Environmental Science & Technology. 53:5504-5511
Real-world nitrogen oxides (NO x) emissions were estimated using on-board sensor readings from 72 heavy-duty diesel vehicles (HDDVs) equipped with a Selective Catalytic Reduction (SCR) system in California. The results showed that there were large di
Autor:
Stanley P. Sander, T. J. Pongetti, Bart E. Croes, Nicholas M. Vizenor, Stephen Conley, Jessica G. Charrier-Klobas, Donald R. Blake, Yanju Chen, T. Kuwayama, Jorn D. Herner
Publikováno v:
Environmental Science & Technology. 53:2961-2970
Rapid increase in atmospheric methane (CH4) mixing ratios over the past century is attributable to the intensification of human activities. Information on spatially explicit source contributions is...
Autor:
Vineet Yadav, Jorn D. Herner, A. Guha, P. Decola, Christopher O'Handley, Francesca M. Hopkins, Matthias Falk, G. D. Emmitt, Andrew K. Thorpe, Riley M. Duren, Sally Newman
Estimating methane (CH4) emission rates using quantitative CH4 retrievals from the Next Generation Airborne Visible/Infrared Imaging Spectrometer (AVIRIS-NG) requires the use of wind speeds. Model wind speeds have limited temporal and spatial resolut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b3c63e1f350bfa591e22b1c6fe2b20d
https://doi.org/10.5194/egusphere-egu21-3138
https://doi.org/10.5194/egusphere-egu21-3138
Autor:
Tao Huai, Christopher R. Ruehl, Shaohua Hu, Mark Burnitzki, Jorn D. Herner, John F. Collins, Yi Tan, Chandan Misra, Jeremy D. Smith, Seungju Yoon
Over the past decade, efforts to reduce emissions of particulate matter (PM) and oxides of nitrogen (NO + NO2, or NOx) from heavy-duty diesel vehicles (HDDVs) have led to the widespread adoption of both Diesel Particulate Filters (DPFs) to control PM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d27f53d0489cda9331d94ae3926f5163
Autor:
Jiacheng Yang, Thomas D. Durbin, Jorn D. Herner, Seungju Yoon, Kent C. Johnson, Georgios Karavalakis, Yu Jiang, Yi Tan
Publikováno v:
Fuel. 307:121771
For the first time, nitrogen oxide (NOx) emissions were systematically investigated during different operating conditions from a single test article on a chassis dynamometer, under real-world (on-road) conditions, on an engine dynamometer after the e
Publikováno v:
Atmospheric Environment. 167:335-345
This study was designed to estimate and compare the air pollution exposures experienced by commuters in six common transportation modes utilized by California residents, and to evaluate the impact of practical exposure mitigation strategies in reduci
Publikováno v:
Environmental Science & Technology. 51:6981-6989
The California Air Resources Board (ARB) and the City of Sacramento undertook this study to characterize the in-use emissions from model year (MY) 2010 or newer diesel, liquefied natural gas (LNG), and hydraulic hybrid diesel engines during real-worl
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 2627:1-8
Introduction of a selective catalytic reduction system for heavy-duty diesel trucks (HDDTs) has substantially reduced emissions of oxides of nitrogen (NOx). However, it was found that in-use NOx emissions measured from three 2010-technology HDDTs wer
Autor:
Jorn D. Herner, Riley M. Duren, Laura Bianco, Charles E. Miller, Dazhong Yin, Matthew S. Johnson, Y. Hsu, Marc Fischer, Kenneth Stroud, Laura T. Iraci, Tomoaki Tanaka, Ralph F. Keeling, Ray F. Weiss, Jeremy Avise, Xue Meng Chen, Y. Cui, A. Vijayan, Bart E. Croes, Zhan Zhao, Vineet Yadav, Yanju Chen, Eric A. Kort, Jooil Kim, K. R. Verhulst, Matthias Falk
Publikováno v:
Environmental sciencetechnology. 53(16)
California methane (CH4) emissions are quantified for three years from two tower networks and one aircraft campaign. We used backward trajectory simulations and a mesoscale Bayesian inverse model, ...