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Missing Gas-Phase Source of HONO Inferred from Zeppelin Measurements in the Troposphere

Open access
Li, Xin, Rohrer, Franz, Hofzumahaus, Andreas, Brauers, Theo, Häseler, Rolf, Bohn, Birger, Broch, Sebastian, Fuchs, Hendrik, Gomm, Sebastian, Holland, Frank, Jäger, Julia, Kaiser, Jennifer, Keutsch, Frank N., Lohse, Insa, Lu, Keding, Tillmann, Ralf, Wegener, Robert, Wolfe, Glenn M., Mentel, Thomas F., Kiendler-Scharr, Astrid, Wahner, Andreas·2014·Science

Abstract

On a Zeppelin: Nitrous acid (HONO) is an important atmospheric trace gas that acts as a precursor of tropospheric hydroxyl-radicals (OH), which is responsible for the self-cleansing capacity of the atmosphere and which also controls the concentrations of greenhouse gases, such as methane and ozone. How HONO is made is a mystery. Flying onboard a Zeppelin over the Po Valley in Northern Italy, Li et al. (p. 292 ) discovered HONO in the undisturbed morning troposphere, indicating that HONO must be produced there, rather than mixed from the surface. The high HONO concentrations are likely to have been formed by a light-dependent gas-phase source that probably consumed OH or HO2 radicals, which hints that the impact of HONO on the abundance of OH in the entire troposphere may be substantially overestimated.

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Metadata

Authors
Li, X., Rohrer, F., Hofzumahaus, A., Brauers, T., Häseler, R., Bohn, B., Broch, S., Fuchs, H., Gomm, S., Holland, F., Jäger, J., Kaiser, J., Keutsch, F. N., Lohse, I., Lu, K., Tillmann, R., Wegener, R., Wolfe, G. M., Mentel, T. F., Kiendler-Scharr, A., & Wahner, A.
Venue
Science
Published
2014-04-18
Volume
344
Issue
6181
Pages
292-296
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2084897789
Cited by
227
References
0
FWCI
14.12
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Missing Gas-Phase Source of HONO Inferred from Zeppelin Measurements in the Troposphere. https://app.cochat.ai/papers/10.1126/science.1248999
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Li, X., Rohrer, F., Hofzumahaus, A., Brauers, T., Häseler, R., Bohn, B., Broch, S., Fuchs, H., Gomm, S., Holland, F., Jäger, J., Kaiser, J., Keutsch, F. N., Lohse, I., Lu, K., Tillmann, R., Wegener, R., Wolfe, G. M., Mentel, T. F., . . . Wahner, A. (2014). Missing Gas-Phase Source of HONO Inferred from Zeppelin Measurements in the Troposphere. Science. https://doi.org/10.1126/science.1248999

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