Steven Sjostedt
Georgia Institute of Technology
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Publication
Featured researches published by Steven Sjostedt.
Environmental Science & Technology | 2017
Xiaoxi Liu; Hang Qu; L. Gregory Huey; Yuhang Wang; Steven Sjostedt; Limin Zeng; Keding Lu; Yusheng Wu; Min Hu; Min Shao; Tong Zhu; Yuanhang Zhang
Molecular chlorine (Cl2) and nitryl chloride (ClNO2) concentrations were measured using chemical ionization mass spectrometry at a rural site over the North China Plain during June 2014. High levels of daytime Cl2 up to ∼450 pptv were observed. The average diurnal Cl2 mixing ratios showed a maximum around noon at ∼100 pptv. ClNO2 exhibited a strong diurnal variation with early morning maxima reaching ppbv levels and afternoon minima sustained above 60 pptv. A moderate correlation (R2 = 0.31) between Cl2 and sulfur dioxide was observed, perhaps indicating a role for power plant emissions in the generation of the observed chlorine. We also observed a strong correlation (R2 = 0.83) between daytime (10:00-20:00) Cl2 and ClNO2, which implies that both of them were formed from a similar mechanism. In addition, Cl2 production is likely associated with a photochemical mechanism as Cl2 concentrations varied with ozone (O3) levels. The impact of Cl2 and ClNO2 as Cl atom sources is investigated using a photochemical box model. We estimated that the produced Cl atoms oxidized slightly more alkanes than OH radicals and enhanced the daily concentrations of peroxy radicals by 15% and the O3 production rate by 19%.
Atmospheric Environment | 2007
G. Chen; L. G. Huey; J. H. Crawford; J. R. Olson; Manuel A. Hutterli; Steven Sjostedt; David J. Tanner; Jack E. Dibb; Barry Lefer; Nicola J. Blake; Douglas D. Davis; Andreas Stohl
Archive | 2005
Steven Sjostedt; L. Gregory Huey; David J. Tanner; J. Peischl; Guimin Chen; Jack E. Dibb; Barry Lefer; Manuel A. Hutterli; A. J. Beyersdorf; N. J. Blake; D. R. Blake
Archive | 2004
L. Gregory Huey; Steven Sjostedt; David J. Tanner; Jack E. Dibb; Guimin Chen; Barry Lefer; J. Peischl; Manuel A. Hutterli; N. J. Blake; D. R. Blake; A. J. Beyersdorf; T. B. Ryerson
Archive | 2002
David J. Tanner; Steven Sjostedt; Greg Huey; D. B. Slusher; Guimin Chen; Barry Lefer; Richard E. Shetter; Mary Anne Carroll; S. Hengel; Edward Charles Fortner; Vicky Young
Archive | 2005
J. B. Nowak; J. A. Neuman; K. Yoshida; T. B. Ryerson; L. Gregory Huey; David J. Tanner; Steven Sjostedt; G. Hübler; Tara Jean Fortin; D. J. Sueper; F. C. Fehsenfeld
Archive | 2004
David J. Tanner; Steven Sjostedt; J. Peischl; L. Gregory Huey
Archive | 2004
Guimin Chen; J. H. Crawford; L. Gregory Huey; David J. Tanner; Steven Sjostedt; Jack E. Dibb; Manuel A. Hutterli; Barry Lefer; Richard E. Shetter; N. J. Blake; D. R. Blake; A. J. Beyersdorf; Donna Sueper
Archive | 2004
Steven Sjostedt; David J. Tanner; Jack E. Dibb; M. P. Buhr; Mark J. Warshawsky; Douglas D. Davis; Guimin Chen; R. L. Mauldin; F. L. Eisele; Rieko Arimoto; L. Gregory Huey
Archive | 2004
J. H. Crawford; Guimin Chen; Douglas D. Davis; M. P. Buhr; F. L. Eisele; R. L. Mauldin; L. Gregory Huey; David J. Tanner; Steven Sjostedt; D. Tan; Jack E. Dibb; Manuel A. Hutterli; D. R. Blake
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Cooperative Institute for Research in Environmental Sciences
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