Mesospheric anomalous diffusion during noctilucent cloud scenarios
The Andenes specular meteor radar shows meteor trail diffusion rates increasing on average by about 10 % at times and locations where a lidar observes noctilucent clouds (NLCs). This high-latitude effect has been attributed to the presence of charged NLC after exploring possible contributions from t...
Published in: | Atmospheric Chemistry and Physics |
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Language: | English |
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Online Access: | https://doi.org/10.5194/acp-19-5259-2019 |
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ftncar:oai:drupal-site.org:articles_22469 2023-09-05T13:11:49+02:00 Mesospheric anomalous diffusion during noctilucent cloud scenarios Laskar, Fazlul I. (author) Stober, Gunter (author) Fiedler, Jens (author) Oppenheim, Meers M. (author) Chau, Jorge L. (author) Pallamraju, Duggirala (author) Pedatella, Nicholas M. (author) Tsutsumi, Masaki (author) Renkwitz, Toralf (author) 2019-04-17 https://doi.org/10.5194/acp-19-5259-2019 en eng Atmospheric Chemistry and Physics--Atmos. Chem. Phys.--1680-7324 articles:22469 ark:/85065/d7gh9n1c doi:10.5194/acp-19-5259-2019 Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. article Text 2019 ftncar https://doi.org/10.5194/acp-19-5259-2019 2023-08-14T18:48:51Z The Andenes specular meteor radar shows meteor trail diffusion rates increasing on average by about 10 % at times and locations where a lidar observes noctilucent clouds (NLCs). This high-latitude effect has been attributed to the presence of charged NLC after exploring possible contributions from thermal tides. To make this claim, the current study evaluates data from three stations at high, middle, and low latitudes for the years 2012 to 2016 to show that NLC influence on the meteor trail diffusion is independent of thermal tides. The observations also show that the meteor trail diffusion enhancement during NLC cover exists only at high latitudes and near the peaks of NLC layers. This paper discusses a number of possible explanations for changes in the regions with NLCs and leans towards the hypothesis that the relative abundance of background electron density plays the leading role. A more accurate model of the meteor trail diffusion around NLC particles would help researchers determine mesospheric temperature and neutral density profiles from meteor radars at high latitudes. Article in Journal/Newspaper Andenes OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Atmospheric Chemistry and Physics 19 7 5259 5267 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
The Andenes specular meteor radar shows meteor trail diffusion rates increasing on average by about 10 % at times and locations where a lidar observes noctilucent clouds (NLCs). This high-latitude effect has been attributed to the presence of charged NLC after exploring possible contributions from thermal tides. To make this claim, the current study evaluates data from three stations at high, middle, and low latitudes for the years 2012 to 2016 to show that NLC influence on the meteor trail diffusion is independent of thermal tides. The observations also show that the meteor trail diffusion enhancement during NLC cover exists only at high latitudes and near the peaks of NLC layers. This paper discusses a number of possible explanations for changes in the regions with NLCs and leans towards the hypothesis that the relative abundance of background electron density plays the leading role. A more accurate model of the meteor trail diffusion around NLC particles would help researchers determine mesospheric temperature and neutral density profiles from meteor radars at high latitudes. |
author2 |
Laskar, Fazlul I. (author) Stober, Gunter (author) Fiedler, Jens (author) Oppenheim, Meers M. (author) Chau, Jorge L. (author) Pallamraju, Duggirala (author) Pedatella, Nicholas M. (author) Tsutsumi, Masaki (author) Renkwitz, Toralf (author) |
format |
Article in Journal/Newspaper |
title |
Mesospheric anomalous diffusion during noctilucent cloud scenarios |
spellingShingle |
Mesospheric anomalous diffusion during noctilucent cloud scenarios |
title_short |
Mesospheric anomalous diffusion during noctilucent cloud scenarios |
title_full |
Mesospheric anomalous diffusion during noctilucent cloud scenarios |
title_fullStr |
Mesospheric anomalous diffusion during noctilucent cloud scenarios |
title_full_unstemmed |
Mesospheric anomalous diffusion during noctilucent cloud scenarios |
title_sort |
mesospheric anomalous diffusion during noctilucent cloud scenarios |
publishDate |
2019 |
url |
https://doi.org/10.5194/acp-19-5259-2019 |
genre |
Andenes |
genre_facet |
Andenes |
op_relation |
Atmospheric Chemistry and Physics--Atmos. Chem. Phys.--1680-7324 articles:22469 ark:/85065/d7gh9n1c doi:10.5194/acp-19-5259-2019 |
op_rights |
Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
op_doi |
https://doi.org/10.5194/acp-19-5259-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
7 |
container_start_page |
5259 |
op_container_end_page |
5267 |
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1776197161957982208 |