Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Harald, Stark"'
Autor:
Olivia J. Jenks, Marla P. DeVault, Anna C. Ziola, Melissa A. Morris, Melinda K. Schueneman, Harald Stark, Jose L. Jimenez, Paul J. Ziemann, Joost A. de Gouw
Publikováno v:
ACS Earth and Space Chemistry. 7:1097-1106
Autor:
Daniel John Katz, Aroob Abdelhamid, Harald Stark, Manjula R. Canagaratna, Douglas R. Worsnop, Eleanor C. Browne
In the lower troposphere, rapid collisions between ions and trace gases result in the transfer of positive charge to the highest proton affinity species and negative charge to the lowest proton affinity species. Measurements of the chemical compositi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff96983076fddc5707347e2b95c70874
http://hdl.handle.net/10138/359571
http://hdl.handle.net/10138/359571
Autor:
Zhe Peng, Douglas A. Day, Guy Symonds, Olivia Jenks, Harald Stark, Anne V. Handschy, Joost de Gouw, Jose L. Jimenez
Lamps emitting at 222 nm have attracted recent interest for germicidal ultraviolet disinfection (“GUV222”). Their impact on indoor air quality is considered negligible. In this study, ozone formation is observed for eight different lamps from fiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85d5158cde59e1eb7cc574ab7d68d32b
https://doi.org/10.1101/2023.05.13.23289946
https://doi.org/10.1101/2023.05.13.23289946
Autor:
Philip Croteau, Benjamin Nault, Manjula Canagaratna, Edward Fortner, Andrew Lambe, Harald Stark, Donna Sueper, Benjamin Werden, Anandi Williams, Leah Williams, Douglas Worsnop, John Jayne
Long-term measurements of the composition and mass concentration of particulate matter (PM) are essential for source apportionment, epidemiological studies, and air quality trends. Over the past ten years, the Aerosol Chemical Speciation Monitor (ACS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9eb0441c09e39795a947654b5ae3f9e
https://doi.org/10.5194/egusphere-egu23-9929
https://doi.org/10.5194/egusphere-egu23-9929
Autor:
Emily Matthews, Thomas Bannan, M. Anwar Khan, Dudley Shallcross, Harald Stark, Eleanor Browne, Alexander Archibald, Stéphane Bauguitte, Chris Reed, Navaneeth Thamban, Huihui Wu, James Lee, Lucy Carpenter, Ming-xi Yang, Thomas Bell, Grant Allen, Carl Percival, Gordon McFiggans, Martin Gallagher, Hugh Coe
Despite the reduced nitrogen (N) cycle being central to global biogeochemistry, there are large uncertainties surrounding its sources and rate of cycling. Here, we present the first observations of gas-phase urea (CO(NH₂)₂) in the atmosphere from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d342a9b855d0170b763830df5baf48f5
https://doi.org/10.5194/egusphere-egu23-6620
https://doi.org/10.5194/egusphere-egu23-6620
Publikováno v:
eISSN
Weighted positive matrix factorization (PMF) has been used by scientists to find small sets of underlying factors in environmental data. However, as the size of the data has grown, increasing computational costs have made it impractical to use tradit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2eac05a8c93fcea1b57ab4ec5b2a2ee7
https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1221/
https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1221/
Publikováno v:
eISSN
Mass spectrometry is an important analytical technique within the field of atmospheric chemistry. Owing to advances in instrumentation, particularly with regards to mass-resolving power and instrument response factors (sensitivities), hundreds of dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce7de9067d6aa64b191cdc2884ee9d54
https://doi.org/10.5194/egusphere-2022-1319
https://doi.org/10.5194/egusphere-2022-1319
Autor:
Alexander Moravek, Trevor C. VandenBoer, Zachary Finewax, Demetrios Pagonis, Benjamin A. Nault, Wyatt L. Brown, Douglas A. Day, Anne V. Handschy, Harald Stark, Paul Ziemann, Jose L. Jimenez, Joost A. de Gouw, Cora J. Young
Publikováno v:
Environmental sciencetechnology. 56(22)
Indoor gas-phase radical sources are poorly understood but expected to be much different from outdoors. Several potential radical sources were measured in a windowless, light-emitting diode (LED)-lit room in a college athletic facility over a 2 week