Observations of Reduced Turbulence and Wave Activity in the Arctic Middle Atmosphere Following the January 2015 Sudden Stratospheric Warming
Measurements of turbulence and waves were made as part of the Mesosphere-Lower Thermosphere Turbulence Experiment (MTeX) on the night of 25–26 January 2015 at Poker Flat Research Range, Chatanika, Alaska (65°N, 147°W). Rocket-borne ionization gauge measurements revealed turbulence in the 70- to 88-k...
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ftleibnizopen:oai:oai.leibnizopen.de:8h6CMYsBBwLIz6xGcBjE 2023-11-12T04:12:42+01:00 Observations of Reduced Turbulence and Wave Activity in the Arctic Middle Atmosphere Following the January 2015 Sudden Stratospheric Warming Triplett, Colin C. Li, Jintai Collins, Richard L. Lehmacher, Gerald A. Barjatya, Aroh Fritts, David C. Strelnikov, Boris Lübken, Franz‐Josef Thurairajah, Brentha Harvey, V. Lynn Hampton, Donald L. Varney, Roger H. 2018-12-11 application/pdf https://oa.tib.eu/renate/handle/123456789/10693 https://doi.org/10.34657/9729 eng eng Hoboken, NJ : Wiley CC BY-NC-ND 4.0 Unported https://creativecommons.org/licenses/by-nc-nd/4.0/ JGR : Atmospheres 123 (2018), Nr. 23 gravity waves ion-gauge lidar SSW turbulence 550 article Text 2018 ftleibnizopen https://doi.org/10.34657/9729 2023-10-15T23:36:28Z Measurements of turbulence and waves were made as part of the Mesosphere-Lower Thermosphere Turbulence Experiment (MTeX) on the night of 25–26 January 2015 at Poker Flat Research Range, Chatanika, Alaska (65°N, 147°W). Rocket-borne ionization gauge measurements revealed turbulence in the 70- to 88-km altitude region with energy dissipation rates between 0.1 and 24 mW/kg with an average value of 2.6 mW/kg. The eddy diffusion coefficient varied between 0.3 and 134 m2/s with an average value of 10 m2/s. Turbulence was detected around mesospheric inversion layers (MILs) in both the topside and bottomside of the MILs. These low levels of turbulence were measured after a minor sudden stratospheric warming when the circulation continued to be disturbed by planetary waves and winds remained weak in the stratosphere and mesosphere. Ground-based lidar measurements characterized the ensemble of inertia-gravity waves and monochromatic gravity waves. The ensemble of inertia-gravity waves had a specific potential energy of 0.8 J/kg over the 40- to 50-km altitude region, one of the lowest values recorded at Chatanika. The turbulence measurements coincided with the overturning of a 2.5-hr monochromatic gravity wave in a depth of 3 km at 85 km. The energy dissipation rates were estimated to be 3 mW/kg for the ensemble of waves and 18 mW/kg for the monochromatic wave. The MTeX observations reveal low levels of turbulence associated with low levels of gravity wave activity. In the light of other Arctic observations and model studies, these observations suggest that there may be reduced turbulence during disturbed winters. publishedVersion Article in Journal/Newspaper Arctic Alaska Unknown Arctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
gravity waves ion-gauge lidar SSW turbulence 550 |
spellingShingle |
gravity waves ion-gauge lidar SSW turbulence 550 Triplett, Colin C. Li, Jintai Collins, Richard L. Lehmacher, Gerald A. Barjatya, Aroh Fritts, David C. Strelnikov, Boris Lübken, Franz‐Josef Thurairajah, Brentha Harvey, V. Lynn Hampton, Donald L. Varney, Roger H. Observations of Reduced Turbulence and Wave Activity in the Arctic Middle Atmosphere Following the January 2015 Sudden Stratospheric Warming |
topic_facet |
gravity waves ion-gauge lidar SSW turbulence 550 |
description |
Measurements of turbulence and waves were made as part of the Mesosphere-Lower Thermosphere Turbulence Experiment (MTeX) on the night of 25–26 January 2015 at Poker Flat Research Range, Chatanika, Alaska (65°N, 147°W). Rocket-borne ionization gauge measurements revealed turbulence in the 70- to 88-km altitude region with energy dissipation rates between 0.1 and 24 mW/kg with an average value of 2.6 mW/kg. The eddy diffusion coefficient varied between 0.3 and 134 m2/s with an average value of 10 m2/s. Turbulence was detected around mesospheric inversion layers (MILs) in both the topside and bottomside of the MILs. These low levels of turbulence were measured after a minor sudden stratospheric warming when the circulation continued to be disturbed by planetary waves and winds remained weak in the stratosphere and mesosphere. Ground-based lidar measurements characterized the ensemble of inertia-gravity waves and monochromatic gravity waves. The ensemble of inertia-gravity waves had a specific potential energy of 0.8 J/kg over the 40- to 50-km altitude region, one of the lowest values recorded at Chatanika. The turbulence measurements coincided with the overturning of a 2.5-hr monochromatic gravity wave in a depth of 3 km at 85 km. The energy dissipation rates were estimated to be 3 mW/kg for the ensemble of waves and 18 mW/kg for the monochromatic wave. The MTeX observations reveal low levels of turbulence associated with low levels of gravity wave activity. In the light of other Arctic observations and model studies, these observations suggest that there may be reduced turbulence during disturbed winters. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Triplett, Colin C. Li, Jintai Collins, Richard L. Lehmacher, Gerald A. Barjatya, Aroh Fritts, David C. Strelnikov, Boris Lübken, Franz‐Josef Thurairajah, Brentha Harvey, V. Lynn Hampton, Donald L. Varney, Roger H. |
author_facet |
Triplett, Colin C. Li, Jintai Collins, Richard L. Lehmacher, Gerald A. Barjatya, Aroh Fritts, David C. Strelnikov, Boris Lübken, Franz‐Josef Thurairajah, Brentha Harvey, V. Lynn Hampton, Donald L. Varney, Roger H. |
author_sort |
Triplett, Colin C. |
title |
Observations of Reduced Turbulence and Wave Activity in the Arctic Middle Atmosphere Following the January 2015 Sudden Stratospheric Warming |
title_short |
Observations of Reduced Turbulence and Wave Activity in the Arctic Middle Atmosphere Following the January 2015 Sudden Stratospheric Warming |
title_full |
Observations of Reduced Turbulence and Wave Activity in the Arctic Middle Atmosphere Following the January 2015 Sudden Stratospheric Warming |
title_fullStr |
Observations of Reduced Turbulence and Wave Activity in the Arctic Middle Atmosphere Following the January 2015 Sudden Stratospheric Warming |
title_full_unstemmed |
Observations of Reduced Turbulence and Wave Activity in the Arctic Middle Atmosphere Following the January 2015 Sudden Stratospheric Warming |
title_sort |
observations of reduced turbulence and wave activity in the arctic middle atmosphere following the january 2015 sudden stratospheric warming |
publisher |
Hoboken, NJ : Wiley |
publishDate |
2018 |
url |
https://oa.tib.eu/renate/handle/123456789/10693 https://doi.org/10.34657/9729 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Alaska |
genre_facet |
Arctic Alaska |
op_source |
JGR : Atmospheres 123 (2018), Nr. 23 |
op_rights |
CC BY-NC-ND 4.0 Unported https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.34657/9729 |
_version_ |
1782331085811613696 |