Studies of Mid-Latitude Mesospheric Temperature Variability and Its Relationship to Gravity Waves, Tides, and Planetary Waves
Temperature observations of the middle atmosphere have been carried out from September 1993 through July 1995 using a Rayleigh backscatter lidar located at Utah State University (42°N, 111°W). Data have been analyzed to obtain absolute temperature profiles from 40 to 90 km. Various sources of error...
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ftutahsudc:oai:digitalcommons.usu.edu:etd-5720 2023-06-11T04:03:39+02:00 Studies of Mid-Latitude Mesospheric Temperature Variability and Its Relationship to Gravity Waves, Tides, and Planetary Waves Beissner, Kenneth C. 1997-05-01T07:00:00Z application/pdf https://digitalcommons.usu.edu/etd/4687 https://doi.org/10.26076/12c4-80ee https://digitalcommons.usu.edu/context/etd/article/5720/viewcontent/1997_Beissner_Kenneth.pdf unknown DigitalCommons@USU https://digitalcommons.usu.edu/etd/4687 doi:10.26076/12c4-80ee https://digitalcommons.usu.edu/context/etd/article/5720/viewcontent/1997_Beissner_Kenneth.pdf Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact digitalcommons@usu.edu. All Graduate Theses and Dissertations Physics text 1997 ftutahsudc https://doi.org/10.26076/12c4-80ee 2023-05-04T17:39:46Z Temperature observations of the middle atmosphere have been carried out from September 1993 through July 1995 using a Rayleigh backscatter lidar located at Utah State University (42°N, 111°W). Data have been analyzed to obtain absolute temperature profiles from 40 to 90 km. Various sources of error were reviewed in order to ensure the quality of the measurements. This included conducting a detailed examination of the data reduction procedure, integration methods, and averaging techniques. eliminating errors of 1-3%. The temperature structure climatology has been compared with several other mid-latitude data sets. including those from the French lidars, the SME spacecraft, the sodium lidars at Ft. Collins and Urbana, the MSISe90 model, and a high-latitude composite set from Andenes, Norway. In general, good agreement occurs at mid-latitudes, but areas of disagreement do exist. Among these, the Utah temperatures are significantly warmer than the MSISe90 temperatures above approximately 80 km, they are lower below 80 km than any of the others in summer, they show major year-to-year variability in the winter profiles, and they differ from the sodium lidar data at the altitudes where the temperature profiles should overlap. Also, comparisons between observations and a physics based global circulation model, the TIME-GCM, were conducted for a mid-latitude site. A photo-chemical model was developed to predict airglow intensity of OH based on output from the TIME-GCM. Many discrepancies between the model and observations were found, including a modeled summer mesopause too high, a stronger summer inversion not normally observed by lidar, a fall-spring asymmetry in the OH winds and lidar temperatures but not reproduced in the TIME-GCM equinoctial periods, larger winter seasonal wind tide than observed by the FPl, and a failure of the model to reverse the summertime mesospheric jet. It is our conclusion these discrepancies are due to a gravity wave parameterization in the model that is too weak and an increase will ... Text Andenes Utah State University: DigitalCommons@USU Norway |
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Utah State University: DigitalCommons@USU |
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language |
unknown |
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Physics |
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Physics Beissner, Kenneth C. Studies of Mid-Latitude Mesospheric Temperature Variability and Its Relationship to Gravity Waves, Tides, and Planetary Waves |
topic_facet |
Physics |
description |
Temperature observations of the middle atmosphere have been carried out from September 1993 through July 1995 using a Rayleigh backscatter lidar located at Utah State University (42°N, 111°W). Data have been analyzed to obtain absolute temperature profiles from 40 to 90 km. Various sources of error were reviewed in order to ensure the quality of the measurements. This included conducting a detailed examination of the data reduction procedure, integration methods, and averaging techniques. eliminating errors of 1-3%. The temperature structure climatology has been compared with several other mid-latitude data sets. including those from the French lidars, the SME spacecraft, the sodium lidars at Ft. Collins and Urbana, the MSISe90 model, and a high-latitude composite set from Andenes, Norway. In general, good agreement occurs at mid-latitudes, but areas of disagreement do exist. Among these, the Utah temperatures are significantly warmer than the MSISe90 temperatures above approximately 80 km, they are lower below 80 km than any of the others in summer, they show major year-to-year variability in the winter profiles, and they differ from the sodium lidar data at the altitudes where the temperature profiles should overlap. Also, comparisons between observations and a physics based global circulation model, the TIME-GCM, were conducted for a mid-latitude site. A photo-chemical model was developed to predict airglow intensity of OH based on output from the TIME-GCM. Many discrepancies between the model and observations were found, including a modeled summer mesopause too high, a stronger summer inversion not normally observed by lidar, a fall-spring asymmetry in the OH winds and lidar temperatures but not reproduced in the TIME-GCM equinoctial periods, larger winter seasonal wind tide than observed by the FPl, and a failure of the model to reverse the summertime mesospheric jet. It is our conclusion these discrepancies are due to a gravity wave parameterization in the model that is too weak and an increase will ... |
format |
Text |
author |
Beissner, Kenneth C. |
author_facet |
Beissner, Kenneth C. |
author_sort |
Beissner, Kenneth C. |
title |
Studies of Mid-Latitude Mesospheric Temperature Variability and Its Relationship to Gravity Waves, Tides, and Planetary Waves |
title_short |
Studies of Mid-Latitude Mesospheric Temperature Variability and Its Relationship to Gravity Waves, Tides, and Planetary Waves |
title_full |
Studies of Mid-Latitude Mesospheric Temperature Variability and Its Relationship to Gravity Waves, Tides, and Planetary Waves |
title_fullStr |
Studies of Mid-Latitude Mesospheric Temperature Variability and Its Relationship to Gravity Waves, Tides, and Planetary Waves |
title_full_unstemmed |
Studies of Mid-Latitude Mesospheric Temperature Variability and Its Relationship to Gravity Waves, Tides, and Planetary Waves |
title_sort |
studies of mid-latitude mesospheric temperature variability and its relationship to gravity waves, tides, and planetary waves |
publisher |
DigitalCommons@USU |
publishDate |
1997 |
url |
https://digitalcommons.usu.edu/etd/4687 https://doi.org/10.26076/12c4-80ee https://digitalcommons.usu.edu/context/etd/article/5720/viewcontent/1997_Beissner_Kenneth.pdf |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Andenes |
genre_facet |
Andenes |
op_source |
All Graduate Theses and Dissertations |
op_relation |
https://digitalcommons.usu.edu/etd/4687 doi:10.26076/12c4-80ee https://digitalcommons.usu.edu/context/etd/article/5720/viewcontent/1997_Beissner_Kenneth.pdf |
op_rights |
Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact digitalcommons@usu.edu. |
op_doi |
https://doi.org/10.26076/12c4-80ee |
_version_ |
1768381085892214784 |