Zobrazeno 1 - 10
of 65
pro vyhledávání: '"E. Kosciuch"'
Autor:
J. H. Crawford, J. R. Olson, E. Kosciuch, R. S. Hornbrook, R. L. Mauldin III, C. A. Cantrell, W. H. Brune, J. Mao, X. Ren, G. Chen, H. B. Singh
Publikováno v:
Atmospheric Measurement Techniques, Vol 5, Iss 8, Pp 2025-2037 (2012)
The hydroxyl (OH) and hydroperoxyl (HO2) radicals, collectively called HOx, play central roles in tropospheric chemistry. Accurate measurements of OH and HO2 are critical to examine our understanding of atmospheric chemistry. Intercomparisons of diff
Externí odkaz:
https://doaj.org/article/9ebec36aeb4047049b515b6ec7e5ba40
Autor:
T. Petäjä, R. L. Mauldin, III, E. Kosciuch, J. McGrath, T. Nieminen, P. Paasonen, M. Boy, A. Adamov, T. Kotiaho, M. Kulmala
Publikováno v:
Atmospheric Chemistry and Physics, Vol 9, Iss 19, Pp 7435-7448 (2009)
As demonstrated in a number of investigations, gaseous sulfuric acid plays a central role in atmospheric aerosol formation. Using chemical ionization mass spectrometer the gas-phase sulfuric acid and OH concentration were measured in Hyytiälä, SMEA
Externí odkaz:
https://doaj.org/article/7643e1dd6b53445096b1f566facf3c90
Autor:
A. Wiedensohler, S. Bauer, B. Wehner, K. Barsanti, A. Held, J. Smith, J. Rathbone, J. Greenberg, E. Kosciuch, R. L. Mauldin, A. Turnipseed, T. Karl, M. Boy, B. Bonn, M. Kulmala, A. Guenther
Publikováno v:
Atmospheric Chemistry and Physics, Vol 8, Iss 6, Pp 1577-1590 (2008)
New particle formation is of interest because of its influence on the properties of aerosol population, and due to the possible contribution of newly formed particles to cloud condensation nuclei. Currently no conclusive evidence exists as to the mec
Externí odkaz:
https://doaj.org/article/f26ed572194a41f29c159bff7cf86e0c
Autor:
J. H. Crawford, J. R. Olson, E. Kosciuch, R. S. Hornbrook, R. L. Mauldin III, C. A. Cantrell, W. H. Brune, J. Mao, X. Ren, G. Chen, H. B. Singh
Publikováno v:
Atmospheric Measurement Techniques, Vol 5, Iss 8, Pp 2025-2037 (2012)
The hydroxyl (OH) and hydroperoxyl (HO2) radicals, collectively called HOx, play central roles in tropospheric chemistry. Accurate measurements of OH and HO2 are critical to examine our understanding of atmospheric chemistry. Intercomparisons of diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::5d6c930387c8716008792950cf2241ae
https://www.atmos-meas-tech.net/5/2025/2012/
https://www.atmos-meas-tech.net/5/2025/2012/
Autor:
Hanwant B. Singh, Rebecca S. Hornbrook, Roy L. Mauldin, E. Kosciuch, Jingqiu Mao, James H. Crawford, Christopher A. Cantrell, Xinrong Ren, Jennifer R. Olson, G. Chen, William H. Brune
Publikováno v:
Atmospheric Measurement Techniques. 5:2025-2037
The hydroxyl (OH) and hydroperoxyl (HO2) radicals, collectively called HOx, play central roles in tropospheric chemistry. Accurate measurements of OH and HO2 are critical to examine our understanding of atmospheric chemistry. Intercomparisons of diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26f6be7b79d066335ce1669fad67a222
https://doi.org/10.5194/amt-5-2025-2012
https://doi.org/10.5194/amt-5-2025-2012
Autor:
Donald R. Blake, Fred Eisele, Douglas D. Davis, James H. Crawford, S. J. Sjostedt, Gao Chen, David B. Tanner, E. Kosciuch, Roy L. Mauldin, Greg Huey
Publikováno v:
Atmospheric Environment. 44:572-581
Measurements of OH, H2SO4, and MSA at South Pole (SP) Antarctica were recorded as a part of the 2003 Antarctic Chemistry Investigation (ANTCI 2003). The time period 22 November, 2003–2 January, 2004 provided a unique opportunity to observe atmosphe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ff232d8481577de0acee4151198ce43
https://doi.org/10.1016/j.atmosenv.2009.07.058
https://doi.org/10.1016/j.atmosenv.2009.07.058
Publikováno v:
International Journal of Mass Spectrometry. 239:147-159
A laminar flow reactor coupled to a proton transfer mass spectrometer utilizing H3O+·(H2O)n cluster ions is described. Experiments involving the Cl-atom initiated oxidation of organic species (cyclohexane, cyclopentane, ethane, methane) were perform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::449f5fb9fd5da92aaf1aa0909da35814
https://doi.org/10.1016/j.ijms.2004.07.021
https://doi.org/10.1016/j.ijms.2004.07.021
Autor:
Richard E. Shetter, Bruce E. Henry, G. Chen, Barry Lefer, David B. Tanner, Greg Huey, Roy L. Mauldin, E. Kosciuch, Fred L. Eisele, Douglas D. Davis
Publikováno v:
Atmospheric Environment. 38:5423-5437
Measurements of hydroxyl radical (OH), sulfuric acid (H2SO4) and methane sulfonic acid (MSA) together with the first HO2+RO2 observations at the South Pole are presented. These results were recorded as part of the Investigation of Sulfur Chemistry in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da228a5fed55fd1e40d50b4df853fb4d
https://doi.org/10.1016/j.atmosenv.2004.06.031
https://doi.org/10.1016/j.atmosenv.2004.06.031
Autor:
M. Buhr, E. Kosciuch, John B. Nowak, G. Chen, Richard Arimoto, Roy L. Mauldin, David J. Tanner, D. Slusher, L. G. Huey, Jack E. Dibb, Douglas D. Davis, Fred L. Eisele
Publikováno v:
Atmospheric Environment. 38:5411-5421
HNO 3 and SO 2 were measured by chemical ionization mass spectrometry at the South Pole (SP) during ISCAT 2000 (December, 2000). HNO 3 mixing ratios averaged 22 pptv and ranged from less than 5 to 68 pptv. A simple steady state photochemical analysis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5131071b711599542a87792fbd82e1ba
https://doi.org/10.1016/j.atmosenv.2004.04.037
https://doi.org/10.1016/j.atmosenv.2004.04.037
Autor:
Olusegun Goyea, R. Leon Mauldin, Sherry Stephens, Christopher A. Cantrell, G. D. Edwards, Richard E. Shetter, David J. Tanner, Brian S. Hill, Fred Eisele, E. Kosciuch
Publikováno v:
Analytical Chemistry. 75:5317-5327
Laboratory characterizations of the peroxy radical chemical ionization mass spectrometer (PerCIMS) instrument have been performed. The instrument functions by drawing ambient air through a 50-microm-diameter orifice into an inlet held at low pressure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77714e187f2d403bf2c1266cfcc7ff39
https://doi.org/10.1021/ac034402b
https://doi.org/10.1021/ac034402b