Nitric acid in cirrus clouds
Uptake of nitric acid (HNO 3 ) in Arctic cirrus ice crystals was observed on 11 February 2003 by in-situ instruments onboard the M55 Geophysica aircraft. The cirrus cloud with a mean ice water content of 5.4 mg m -3 covered northern Scandinavia for several hours and extended up to the thermal tropop...
| Published in: | Geophysical Research Letters |
|---|---|
| Main Authors: | , , , , , , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
Wiley
2006
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| Subjects: | |
| Online Access: | https://elib.dlr.de/22631/ |
| _version_ | 1835011484902490112 |
|---|---|
| author | Voigt, C. Schlager, H. Ziereis, H. Kärcher, B. Luo, B.P. Schiller, C. Krämer, M. Popp, P.J. Irie, H. Kondo, Y. |
| author_facet | Voigt, C. Schlager, H. Ziereis, H. Kärcher, B. Luo, B.P. Schiller, C. Krämer, M. Popp, P.J. Irie, H. Kondo, Y. |
| author_sort | Voigt, C. |
| collection | Unknown |
| container_issue | 5 |
| container_title | Geophysical Research Letters |
| container_volume | 33 |
| description | Uptake of nitric acid (HNO 3 ) in Arctic cirrus ice crystals was observed on 11 February 2003 by in-situ instruments onboard the M55 Geophysica aircraft. The cirrus cloud with a mean ice water content of 5.4 mg m -3 covered northern Scandinavia for several hours and extended up to the thermal tropopause at 12.3 km. Within the cirrus region, on average 9% of the total HNO 3 measured as reactive nitrogen (NOy) is present in ice particles, increasing to 19% at temperatures below 205 K. In contrast to previous studies, we discuss the HNO 3 uptake in ice in terms of HNO 3 /H 2 O molar ratios in ice crystals. The HNO 3 content of the ice increases with increasing gas phase HNO 3 concentrations and decreasing temperatures. Enhanced uptake of HNO 3 in ice and heterogeneous chemistry on cold cirrus clouds may disturb the upper tropospheric ozone budget. |
| format | Article in Journal/Newspaper |
| genre | Arctic |
| genre_facet | Arctic |
| geographic | Arctic |
| geographic_facet | Arctic |
| id | ftdlr:oai:elib.dlr.de:22631 |
| institution | Open Polar |
| language | unknown |
| op_collection_id | ftdlr |
| op_doi | https://doi.org/10.1029/2005GL025159 |
| op_relation | Voigt, C. und Schlager, H. und Ziereis, H. und Kärcher, B. und Luo, B.P. und Schiller, C. und Krämer, M. und Popp, P.J. und Irie, H. und Kondo, Y. (2006) Nitric acid in cirrus clouds. Geophysical Research Letters, 33, L05803. Wiley. doi:10.1029/2005GL025159 <https://doi.org/10.1029/2005GL025159>. |
| publishDate | 2006 |
| publisher | Wiley |
| record_format | openpolar |
| spelling | ftdlr:oai:elib.dlr.de:22631 2025-06-15T14:21:15+00:00 Nitric acid in cirrus clouds Voigt, C. Schlager, H. Ziereis, H. Kärcher, B. Luo, B.P. Schiller, C. Krämer, M. Popp, P.J. Irie, H. Kondo, Y. 2006 https://elib.dlr.de/22631/ unknown Wiley Voigt, C. und Schlager, H. und Ziereis, H. und Kärcher, B. und Luo, B.P. und Schiller, C. und Krämer, M. und Popp, P.J. und Irie, H. und Kondo, Y. (2006) Nitric acid in cirrus clouds. Geophysical Research Letters, 33, L05803. Wiley. doi:10.1029/2005GL025159 <https://doi.org/10.1029/2005GL025159>. Atmosphärische Spurenstoffe Zeitschriftenbeitrag PeerReviewed 2006 ftdlr https://doi.org/10.1029/2005GL025159 2025-06-04T04:58:09Z Uptake of nitric acid (HNO 3 ) in Arctic cirrus ice crystals was observed on 11 February 2003 by in-situ instruments onboard the M55 Geophysica aircraft. The cirrus cloud with a mean ice water content of 5.4 mg m -3 covered northern Scandinavia for several hours and extended up to the thermal tropopause at 12.3 km. Within the cirrus region, on average 9% of the total HNO 3 measured as reactive nitrogen (NOy) is present in ice particles, increasing to 19% at temperatures below 205 K. In contrast to previous studies, we discuss the HNO 3 uptake in ice in terms of HNO 3 /H 2 O molar ratios in ice crystals. The HNO 3 content of the ice increases with increasing gas phase HNO 3 concentrations and decreasing temperatures. Enhanced uptake of HNO 3 in ice and heterogeneous chemistry on cold cirrus clouds may disturb the upper tropospheric ozone budget. Article in Journal/Newspaper Arctic Unknown Arctic Geophysical Research Letters 33 5 |
| spellingShingle | Atmosphärische Spurenstoffe Voigt, C. Schlager, H. Ziereis, H. Kärcher, B. Luo, B.P. Schiller, C. Krämer, M. Popp, P.J. Irie, H. Kondo, Y. Nitric acid in cirrus clouds |
| title | Nitric acid in cirrus clouds |
| title_full | Nitric acid in cirrus clouds |
| title_fullStr | Nitric acid in cirrus clouds |
| title_full_unstemmed | Nitric acid in cirrus clouds |
| title_short | Nitric acid in cirrus clouds |
| title_sort | nitric acid in cirrus clouds |
| topic | Atmosphärische Spurenstoffe |
| topic_facet | Atmosphärische Spurenstoffe |
| url | https://elib.dlr.de/22631/ |