Significant concentrations of nitryl chloride observed in rural continental Europe associated with the influence of sea salt chloride and anthropogenic emissions

G. J. Phillips; M. J. Tang; J. Thieser; B. Brickwedde; G. Schuster; B. Bohn; J. Lelieveld; J. N. Crowley

doi:10.1029/2012GL051912

Significant concentrations of nitryl chloride observed in rural continental Europe associated with the influence of sea salt chloride and anthropogenic emissions

G. J. Phillips^*, M. J. Tang, J. Thieser, B. Brickwedde, G. Schuster, B. Bohn, J. Lelieveld, J. N. Crowley

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

We present the first measurements of nitryl chloride (ClNO₂) over continental Europe. Significant quantities of ClNO₂, up to 800 pptv, were measured at a mountaintop field site in Hessen, southwest Germany. ClNO₂ was detected during the majority of nights between the 15th August and 16th September 2011, its largest mixing ratios being associated with air masses influenced by sea salt and anthropogenic NO_x emissions. ClNO₂ persisted in measurable quantities until early afternoons on days with low photolysis frequencies. As a consequence, early morning production rates of Cl atoms could significantly exceed the production of OH via ozone photolysis, likely leading to increased O₃ production.

Original language	English
Article number	L10811
Journal	Geophysical Research Letters
Volume	39
Issue number	10
DOIs	https://doi.org/10.1029/2012GL051912
Publication status	Published - 28 May 2012
Externally published	Yes

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Phillips, G. J., Tang, M. J., Thieser, J., Brickwedde, B., Schuster, G., Bohn, B., Lelieveld, J., & Crowley, J. N. (2012). Significant concentrations of nitryl chloride observed in rural continental Europe associated with the influence of sea salt chloride and anthropogenic emissions. Geophysical Research Letters, 39(10), Article L10811. https://doi.org/10.1029/2012GL051912

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abstract = "We present the first measurements of nitryl chloride (ClNO2) over continental Europe. Significant quantities of ClNO2, up to 800 pptv, were measured at a mountaintop field site in Hessen, southwest Germany. ClNO2 was detected during the majority of nights between the 15th August and 16th September 2011, its largest mixing ratios being associated with air masses influenced by sea salt and anthropogenic NOx emissions. ClNO2 persisted in measurable quantities until early afternoons on days with low photolysis frequencies. As a consequence, early morning production rates of Cl atoms could significantly exceed the production of OH via ozone photolysis, likely leading to increased O3 production.",

author = "Phillips, {G. J.} and Tang, {M. J.} and J. Thieser and B. Brickwedde and G. Schuster and B. Bohn and J. Lelieveld and Crowley, {J. N.}",

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AU - Phillips, G. J.

AU - Tang, M. J.

AU - Thieser, J.

AU - Brickwedde, B.

AU - Schuster, G.

AU - Bohn, B.

AU - Lelieveld, J.

AU - Crowley, J. N.

PY - 2012/5/28

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N2 - We present the first measurements of nitryl chloride (ClNO2) over continental Europe. Significant quantities of ClNO2, up to 800 pptv, were measured at a mountaintop field site in Hessen, southwest Germany. ClNO2 was detected during the majority of nights between the 15th August and 16th September 2011, its largest mixing ratios being associated with air masses influenced by sea salt and anthropogenic NOx emissions. ClNO2 persisted in measurable quantities until early afternoons on days with low photolysis frequencies. As a consequence, early morning production rates of Cl atoms could significantly exceed the production of OH via ozone photolysis, likely leading to increased O3 production.

AB - We present the first measurements of nitryl chloride (ClNO2) over continental Europe. Significant quantities of ClNO2, up to 800 pptv, were measured at a mountaintop field site in Hessen, southwest Germany. ClNO2 was detected during the majority of nights between the 15th August and 16th September 2011, its largest mixing ratios being associated with air masses influenced by sea salt and anthropogenic NOx emissions. ClNO2 persisted in measurable quantities until early afternoons on days with low photolysis frequencies. As a consequence, early morning production rates of Cl atoms could significantly exceed the production of OH via ozone photolysis, likely leading to increased O3 production.

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JO - Geophysical Research Letters

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Significant concentrations of nitryl chloride observed in rural continental Europe associated with the influence of sea salt chloride and anthropogenic emissions

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