Simultaneous and co-located wind measurements in the middle atmosphere by lidar and rocket-borne techniques
We present the first comparison of a new lidar technique to measure winds in the middle atmosphere, called DoRIS (Doppler Rayleigh Iodine Spectrometer), with a rocket-borne in situ method, which relies on measuring the horizontal drift of a target (“starute”) by a tracking radar. The launches took p...
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ftleibnizopen:oai:oai.leibnizopen.de:LG77PYkBdbrxVwz6DpmA 2023-07-30T03:56:10+02:00 Simultaneous and co-located wind measurements in the middle atmosphere by lidar and rocket-borne techniques Lübken, Franz-Josef Baumgarten, Gerd Hildebrand, Jens Schmidlin, Francis J. 2016 application/pdf https://doi.org/10.34657/1246 https://oa.tib.eu/renate/handle/123456789/867 eng eng München : European Geopyhsical Union CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ Atmospheric Measurement Techniques, Volume 9, Issue 8, Page 3911-3919 aerosol backscatter comparative study detection method DORIS gravity wave in situ measurement lidar middle atmosphere observational method tracking uncertainty analysis wind measurement 550 article Text 2016 ftleibnizopen https://doi.org/10.34657/1246 2023-07-10T12:54:58Z We present the first comparison of a new lidar technique to measure winds in the middle atmosphere, called DoRIS (Doppler Rayleigh Iodine Spectrometer), with a rocket-borne in situ method, which relies on measuring the horizontal drift of a target (“starute”) by a tracking radar. The launches took place from the Andøya Space Center (ASC), very close to the ALOMAR observatory (Arctic Lidar Observatory for Middle Atmosphere Research) at 69° N. DoRIS is part of a steerable twin lidar system installed at ALOMAR. The observations were made simultaneously and with a horizontal distance between the two lidar beams and the starute trajectories of typically 0–40 km only. DoRIS measured winds from 14 March 2015, 17:00 UTC, to 15 March 2015, 11:30 UTC. A total of eight starute flights were launched successfully from 14 March, 19:00 UTC, to 15 March, 00:19 UTC. In general there is excellent agreement between DoRIS and the in situ measurements, considering the combined range of uncertainties. This concerns not only the general height structures of zonal and meridional winds and their temporal developments, but also some wavy structures. Considering the comparison between all starute flights and all DoRIS observations in a time period of ±20 min around each individual starute flight, we arrive at mean differences of typically ±5–10 m s−1 for both wind components. Part of the remaining differences are most likely due to the detection of different wave fronts of gravity waves. There is no systematic difference between DoRIS and the in situ observations above 30 km. Below ∼ 30 km, winds from DoRIS are systematically too large by up to 10–20 m s−1, which can be explained by the presence of aerosols. This is proven by deriving the backscatter ratios at two different wavelengths. These ratios are larger than unity, which is an indication of the presence of aerosols. publishedVersion Article in Journal/Newspaper Andøya Arctic LeibnizOpen (The Leibniz Association) Alomar ENVELOPE(-67.083,-67.083,-68.133,-68.133) Andøya ENVELOPE(13.982,13.982,68.185,68.185) Arctic |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
aerosol backscatter comparative study detection method DORIS gravity wave in situ measurement lidar middle atmosphere observational method tracking uncertainty analysis wind measurement 550 |
spellingShingle |
aerosol backscatter comparative study detection method DORIS gravity wave in situ measurement lidar middle atmosphere observational method tracking uncertainty analysis wind measurement 550 Lübken, Franz-Josef Baumgarten, Gerd Hildebrand, Jens Schmidlin, Francis J. Simultaneous and co-located wind measurements in the middle atmosphere by lidar and rocket-borne techniques |
topic_facet |
aerosol backscatter comparative study detection method DORIS gravity wave in situ measurement lidar middle atmosphere observational method tracking uncertainty analysis wind measurement 550 |
description |
We present the first comparison of a new lidar technique to measure winds in the middle atmosphere, called DoRIS (Doppler Rayleigh Iodine Spectrometer), with a rocket-borne in situ method, which relies on measuring the horizontal drift of a target (“starute”) by a tracking radar. The launches took place from the Andøya Space Center (ASC), very close to the ALOMAR observatory (Arctic Lidar Observatory for Middle Atmosphere Research) at 69° N. DoRIS is part of a steerable twin lidar system installed at ALOMAR. The observations were made simultaneously and with a horizontal distance between the two lidar beams and the starute trajectories of typically 0–40 km only. DoRIS measured winds from 14 March 2015, 17:00 UTC, to 15 March 2015, 11:30 UTC. A total of eight starute flights were launched successfully from 14 March, 19:00 UTC, to 15 March, 00:19 UTC. In general there is excellent agreement between DoRIS and the in situ measurements, considering the combined range of uncertainties. This concerns not only the general height structures of zonal and meridional winds and their temporal developments, but also some wavy structures. Considering the comparison between all starute flights and all DoRIS observations in a time period of ±20 min around each individual starute flight, we arrive at mean differences of typically ±5–10 m s−1 for both wind components. Part of the remaining differences are most likely due to the detection of different wave fronts of gravity waves. There is no systematic difference between DoRIS and the in situ observations above 30 km. Below ∼ 30 km, winds from DoRIS are systematically too large by up to 10–20 m s−1, which can be explained by the presence of aerosols. This is proven by deriving the backscatter ratios at two different wavelengths. These ratios are larger than unity, which is an indication of the presence of aerosols. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Lübken, Franz-Josef Baumgarten, Gerd Hildebrand, Jens Schmidlin, Francis J. |
author_facet |
Lübken, Franz-Josef Baumgarten, Gerd Hildebrand, Jens Schmidlin, Francis J. |
author_sort |
Lübken, Franz-Josef |
title |
Simultaneous and co-located wind measurements in the middle atmosphere by lidar and rocket-borne techniques |
title_short |
Simultaneous and co-located wind measurements in the middle atmosphere by lidar and rocket-borne techniques |
title_full |
Simultaneous and co-located wind measurements in the middle atmosphere by lidar and rocket-borne techniques |
title_fullStr |
Simultaneous and co-located wind measurements in the middle atmosphere by lidar and rocket-borne techniques |
title_full_unstemmed |
Simultaneous and co-located wind measurements in the middle atmosphere by lidar and rocket-borne techniques |
title_sort |
simultaneous and co-located wind measurements in the middle atmosphere by lidar and rocket-borne techniques |
publisher |
München : European Geopyhsical Union |
publishDate |
2016 |
url |
https://doi.org/10.34657/1246 https://oa.tib.eu/renate/handle/123456789/867 |
long_lat |
ENVELOPE(-67.083,-67.083,-68.133,-68.133) ENVELOPE(13.982,13.982,68.185,68.185) |
geographic |
Alomar Andøya Arctic |
geographic_facet |
Alomar Andøya Arctic |
genre |
Andøya Arctic |
genre_facet |
Andøya Arctic |
op_source |
Atmospheric Measurement Techniques, Volume 9, Issue 8, Page 3911-3919 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.34657/1246 |
_version_ |
1772811341978927104 |