HNO3 partitioning in cirrus clouds
During the 1997 POLSTAR-1 winter campaign in northern Sweden a flight was performed across a cold trough of air (similar or equal to 196 K) in the tropopause region. Measurements of total water vapour, nitric acid, particles and reactive nitrogen (NOy) were taken. The particle measurements indicate...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Geophysical Union
1999
|
Subjects: | |
Online Access: | https://juser.fz-juelich.de/record/39932 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-39932%22 |
id |
ftfzjuelichnvdb:oai:juser.fz-juelich.de:39932 |
---|---|
record_format |
openpolar |
spelling |
ftfzjuelichnvdb:oai:juser.fz-juelich.de:39932 2024-09-15T18:26:09+00:00 HNO3 partitioning in cirrus clouds Meilinger, S. K. Tsias, A. H. Schiller, C. Peter, T. Dreiling, V. Kuhn, M. Feigl, C. Schlager, H. Curtius, J. Sierau, B. Arnold, F. Zöger, M. DE 1999 https://juser.fz-juelich.de/record/39932 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-39932%22 eng eng American Geophysical Union info:eu-repo/semantics/altIdentifier/issn/0094-8276 info:eu-repo/semantics/altIdentifier/doi/10.1029/1999GL900423 info:eu-repo/semantics/altIdentifier/wos/WOS:000081527100044 info:eu-repo/semantics/altIdentifier/hdl/2128/20820 https://juser.fz-juelich.de/record/39932 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-39932%22 info:eu-repo/semantics/openAccess Geophysical research letters 26, 2207 - 2210 (1999). doi:10.1029/1999GL900423 info:eu-repo/classification/ddc/550 J info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1999 ftfzjuelichnvdb https://doi.org/10.1029/1999GL900423 2024-08-05T23:55:48Z During the 1997 POLSTAR-1 winter campaign in northern Sweden a flight was performed across a cold trough of air (similar or equal to 196 K) in the tropopause region. Measurements of total water vapour, nitric acid, particles and reactive nitrogen (NOy) were taken. The particle measurements indicate that about 3% of the particles in the moist tropospheric air were ice particles. Forward and backward facing NOy inlets were used simultaneously to determine condensed phase HNO3. The combined NOy and particle measurements reveal that less than 1% of a monolayer of NOy could have resided on the ice particles. This casts doubt on the hypothesis that sedimenting cirrus particles generally lead to a strong downward flux of NOy. In addition to the NOy measurements, independent HNO3 measurements were used to determine total HNO3. Although quantitative uncertainties do not allow to completely rule out that the NOy uptake on ice was limited by total HNO3, the combined NOy and KNO3 data suggest that there was low uptake of NOy on ice despite abundant HNO3 in the gas phase. Model studies indicate, that the most likely explanation of the measured nitric acid partitioning is given by HNO3 in ternary solution droplets coexisting with almost HNO3 free ice in the same air mass. Article in Journal/Newspaper Northern Sweden Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) Geophysical Research Letters 26 14 2207 2210 |
institution |
Open Polar |
collection |
Forschungszentrum Jülich: JuSER (Juelich Shared Electronic Resources) |
op_collection_id |
ftfzjuelichnvdb |
language |
English |
topic |
info:eu-repo/classification/ddc/550 J |
spellingShingle |
info:eu-repo/classification/ddc/550 J Meilinger, S. K. Tsias, A. H. Schiller, C. Peter, T. Dreiling, V. Kuhn, M. Feigl, C. Schlager, H. Curtius, J. Sierau, B. Arnold, F. Zöger, M. HNO3 partitioning in cirrus clouds |
topic_facet |
info:eu-repo/classification/ddc/550 J |
description |
During the 1997 POLSTAR-1 winter campaign in northern Sweden a flight was performed across a cold trough of air (similar or equal to 196 K) in the tropopause region. Measurements of total water vapour, nitric acid, particles and reactive nitrogen (NOy) were taken. The particle measurements indicate that about 3% of the particles in the moist tropospheric air were ice particles. Forward and backward facing NOy inlets were used simultaneously to determine condensed phase HNO3. The combined NOy and particle measurements reveal that less than 1% of a monolayer of NOy could have resided on the ice particles. This casts doubt on the hypothesis that sedimenting cirrus particles generally lead to a strong downward flux of NOy. In addition to the NOy measurements, independent HNO3 measurements were used to determine total HNO3. Although quantitative uncertainties do not allow to completely rule out that the NOy uptake on ice was limited by total HNO3, the combined NOy and KNO3 data suggest that there was low uptake of NOy on ice despite abundant HNO3 in the gas phase. Model studies indicate, that the most likely explanation of the measured nitric acid partitioning is given by HNO3 in ternary solution droplets coexisting with almost HNO3 free ice in the same air mass. |
format |
Article in Journal/Newspaper |
author |
Meilinger, S. K. Tsias, A. H. Schiller, C. Peter, T. Dreiling, V. Kuhn, M. Feigl, C. Schlager, H. Curtius, J. Sierau, B. Arnold, F. Zöger, M. |
author_facet |
Meilinger, S. K. Tsias, A. H. Schiller, C. Peter, T. Dreiling, V. Kuhn, M. Feigl, C. Schlager, H. Curtius, J. Sierau, B. Arnold, F. Zöger, M. |
author_sort |
Meilinger, S. K. |
title |
HNO3 partitioning in cirrus clouds |
title_short |
HNO3 partitioning in cirrus clouds |
title_full |
HNO3 partitioning in cirrus clouds |
title_fullStr |
HNO3 partitioning in cirrus clouds |
title_full_unstemmed |
HNO3 partitioning in cirrus clouds |
title_sort |
hno3 partitioning in cirrus clouds |
publisher |
American Geophysical Union |
publishDate |
1999 |
url |
https://juser.fz-juelich.de/record/39932 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-39932%22 |
op_coverage |
DE |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Geophysical research letters 26, 2207 - 2210 (1999). doi:10.1029/1999GL900423 |
op_relation |
info:eu-repo/semantics/altIdentifier/issn/0094-8276 info:eu-repo/semantics/altIdentifier/doi/10.1029/1999GL900423 info:eu-repo/semantics/altIdentifier/wos/WOS:000081527100044 info:eu-repo/semantics/altIdentifier/hdl/2128/20820 https://juser.fz-juelich.de/record/39932 https://juser.fz-juelich.de/search?p=id:%22PreJuSER-39932%22 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/1999GL900423 |
container_title |
Geophysical Research Letters |
container_volume |
26 |
container_issue |
14 |
container_start_page |
2207 |
op_container_end_page |
2210 |
_version_ |
1810466597758828544 |