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...
Published in: | Atmospheric Measurement Techniques |
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ftcopernicus:oai:publications.copernicus.org:amt50586 2023-05-15T13:25:44+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. 2018-01-15 application/pdf https://doi.org/10.5194/amt-9-3911-2016 https://amt.copernicus.org/articles/9/3911/2016/ eng eng doi:10.5194/amt-9-3911-2016 https://amt.copernicus.org/articles/9/3911/2016/ eISSN: 1867-8548 Text 2018 ftcopernicus https://doi.org/10.5194/amt-9-3911-2016 2020-07-20T16:24:02Z 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. Text Andøya Arctic Copernicus Publications: E-Journals Alomar ENVELOPE(-67.083,-67.083,-68.133,-68.133) Andøya ENVELOPE(13.982,13.982,68.185,68.185) Arctic Atmospheric Measurement Techniques 9 8 3911 3919 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
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. |
format |
Text |
author |
Lübken, Franz-Josef Baumgarten, Gerd Hildebrand, Jens Schmidlin, Francis J. |
spellingShingle |
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 |
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 |
publishDate |
2018 |
url |
https://doi.org/10.5194/amt-9-3911-2016 https://amt.copernicus.org/articles/9/3911/2016/ |
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 |
eISSN: 1867-8548 |
op_relation |
doi:10.5194/amt-9-3911-2016 https://amt.copernicus.org/articles/9/3911/2016/ |
op_doi |
https://doi.org/10.5194/amt-9-3911-2016 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
9 |
container_issue |
8 |
container_start_page |
3911 |
op_container_end_page |
3919 |
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1766387602282250240 |