Coincident measurements of PMSE and NLC above ALOMAR (69° N, 16° E) by radar and lidar from 1999–2008
Polar Mesosphere Summer Echoes (PMSE) and Noctilucent Clouds (NLC) have been routinely measured at the ALOMAR research facility in Northern Norway (69° N, 16° E) by lidar and radar, respectively. 2900 h of lidar measurements by the ALOMAR Rayleigh/Mie/Raman lidar were combined with almost 18 000 h o...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2011
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-11-1355-2011 https://doaj.org/article/c1f9f61e69f14954aeaa4f14b25b7ac1 |
id |
ftdoajarticles:oai:doaj.org/article:c1f9f61e69f14954aeaa4f14b25b7ac1 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:c1f9f61e69f14954aeaa4f14b25b7ac1 2023-05-15T17:43:30+02:00 Coincident measurements of PMSE and NLC above ALOMAR (69° N, 16° E) by radar and lidar from 1999–2008 F.-J. Lübken R. Latteck J. Fiedler G. Baumgarten N. Kaifler M. Rapp 2011-02-01T00:00:00Z https://doi.org/10.5194/acp-11-1355-2011 https://doaj.org/article/c1f9f61e69f14954aeaa4f14b25b7ac1 EN eng Copernicus Publications http://www.atmos-chem-phys.net/11/1355/2011/acp-11-1355-2011.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-11-1355-2011 1680-7316 1680-7324 https://doaj.org/article/c1f9f61e69f14954aeaa4f14b25b7ac1 Atmospheric Chemistry and Physics, Vol 11, Iss 4, Pp 1355-1366 (2011) Physics QC1-999 Chemistry QD1-999 article 2011 ftdoajarticles https://doi.org/10.5194/acp-11-1355-2011 2022-12-31T06:55:15Z Polar Mesosphere Summer Echoes (PMSE) and Noctilucent Clouds (NLC) have been routinely measured at the ALOMAR research facility in Northern Norway (69° N, 16° E) by lidar and radar, respectively. 2900 h of lidar measurements by the ALOMAR Rayleigh/Mie/Raman lidar were combined with almost 18 000 h of radar measurements by the ALWIN VHF radar, all taken during the years 1999 to 2008, to study simultaneous and common-volume observations of both phenomena. PMSE and NLC are known from both theory and observations to be positively linked. We quantify the occurrences of PMSE and/or NLC and relations in altitude, especially with respect to the lower layer boundaries. The PMSE occurrence rate is with 75.3% considerably higher than the NLC occurrence rate of 19.5%. For overlapping PMSE and NLC observations, we confirm the coincidence of the lower boundaries and find a standard deviation of 1.26 km, hinting at very fast sublimation rates. However, 10.1% of all NLC measurements occur without accompanying PMSE. Comparison of occurrence rates with solar zenith angle reveals that NLC without PMSE mostly occur around midnight indicating that the ice particles were not detected by the radar due to the reduced electron density. Article in Journal/Newspaper Northern Norway Directory of Open Access Journals: DOAJ Articles Alomar ENVELOPE(-67.083,-67.083,-68.133,-68.133) Norway Atmospheric Chemistry and Physics 11 4 1355 1366 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 F.-J. Lübken R. Latteck J. Fiedler G. Baumgarten N. Kaifler M. Rapp Coincident measurements of PMSE and NLC above ALOMAR (69° N, 16° E) by radar and lidar from 1999–2008 |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Polar Mesosphere Summer Echoes (PMSE) and Noctilucent Clouds (NLC) have been routinely measured at the ALOMAR research facility in Northern Norway (69° N, 16° E) by lidar and radar, respectively. 2900 h of lidar measurements by the ALOMAR Rayleigh/Mie/Raman lidar were combined with almost 18 000 h of radar measurements by the ALWIN VHF radar, all taken during the years 1999 to 2008, to study simultaneous and common-volume observations of both phenomena. PMSE and NLC are known from both theory and observations to be positively linked. We quantify the occurrences of PMSE and/or NLC and relations in altitude, especially with respect to the lower layer boundaries. The PMSE occurrence rate is with 75.3% considerably higher than the NLC occurrence rate of 19.5%. For overlapping PMSE and NLC observations, we confirm the coincidence of the lower boundaries and find a standard deviation of 1.26 km, hinting at very fast sublimation rates. However, 10.1% of all NLC measurements occur without accompanying PMSE. Comparison of occurrence rates with solar zenith angle reveals that NLC without PMSE mostly occur around midnight indicating that the ice particles were not detected by the radar due to the reduced electron density. |
format |
Article in Journal/Newspaper |
author |
F.-J. Lübken R. Latteck J. Fiedler G. Baumgarten N. Kaifler M. Rapp |
author_facet |
F.-J. Lübken R. Latteck J. Fiedler G. Baumgarten N. Kaifler M. Rapp |
author_sort |
F.-J. Lübken |
title |
Coincident measurements of PMSE and NLC above ALOMAR (69° N, 16° E) by radar and lidar from 1999–2008 |
title_short |
Coincident measurements of PMSE and NLC above ALOMAR (69° N, 16° E) by radar and lidar from 1999–2008 |
title_full |
Coincident measurements of PMSE and NLC above ALOMAR (69° N, 16° E) by radar and lidar from 1999–2008 |
title_fullStr |
Coincident measurements of PMSE and NLC above ALOMAR (69° N, 16° E) by radar and lidar from 1999–2008 |
title_full_unstemmed |
Coincident measurements of PMSE and NLC above ALOMAR (69° N, 16° E) by radar and lidar from 1999–2008 |
title_sort |
coincident measurements of pmse and nlc above alomar (69° n, 16° e) by radar and lidar from 1999–2008 |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/acp-11-1355-2011 https://doaj.org/article/c1f9f61e69f14954aeaa4f14b25b7ac1 |
long_lat |
ENVELOPE(-67.083,-67.083,-68.133,-68.133) |
geographic |
Alomar Norway |
geographic_facet |
Alomar Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_source |
Atmospheric Chemistry and Physics, Vol 11, Iss 4, Pp 1355-1366 (2011) |
op_relation |
http://www.atmos-chem-phys.net/11/1355/2011/acp-11-1355-2011.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-11-1355-2011 1680-7316 1680-7324 https://doaj.org/article/c1f9f61e69f14954aeaa4f14b25b7ac1 |
op_doi |
https://doi.org/10.5194/acp-11-1355-2011 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
11 |
container_issue |
4 |
container_start_page |
1355 |
op_container_end_page |
1366 |
_version_ |
1766145591888314368 |