High-Latitude Gravity Wave Measurements in Noctilucent Cloudsand Polar Mesospheric Clouds
Distinct wave forms traditionally observed in Noctilucent Cloud (NLC) photographs and most recently captured in high-resolution panoramic images of Polar Mesospheric Clouds (PMC) provide an exceptionally rich resource for quantifying gravity wave activity and properties in the high-latitude summer m...
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ftutahsudc:oai:digitalcommons.usu.edu:physics_facpub-2159 2023-05-15T17:35:17+02:00 High-Latitude Gravity Wave Measurements in Noctilucent Cloudsand Polar Mesospheric Clouds Taylor, Michael J. Pautet, P. D. Zhao, Y. Randall, C. E. Lumpe, J. Bailey, S. M. Carstens, J. Nielsen, K. Russell III, J. M. Stegman, J. Springer 2010-01-01T08:00:00Z https://digitalcommons.usu.edu/physics_facpub/1160 unknown Hosted by Utah State University Libraries https://digitalcommons.usu.edu/physics_facpub/1160 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 the Institutional Repository Librarian at digitalcommons@usu.edu. PDM All Physics Faculty Publications high-latitude gravity wave noctilucent clouds polar mesospheric clouds Physics text 2010 ftutahsudc 2022-10-27T17:23:06Z Distinct wave forms traditionally observed in Noctilucent Cloud (NLC) photographs and most recently captured in high-resolution panoramic images of Polar Mesospheric Clouds (PMC) provide an exceptionally rich resource for quantifying gravity wave activity and properties in the high-latitude summer mesopause region. Using extensive image data on PMC structures obtained by the Cloud Imaging and Particle Size (CIPS) ultraviolet instrument onboard the NASA Aeronomy of Ice in the Mesosphere (AIM) satellite, we have investigated the properties of prominent quasi-monochromatic waves imaged over the northern hemisphere polar region during summer 2007. Our two-dimensional spectral analysis has focused on the peak season, July period and over 450 events have been measured. The PMC field was found to contain a broad spectrum of gravity waves with horizontal wavelengths ranging from at least 20–400 km. The smallest scale wave events (km), exhibit the highest occurrence frequency, but substantial evidence for larger-scale (>100 km) wave activity was also found. The direction of motion of the waves (both large and small-scale) deduced from their orientations (with 180° ambiguity) was predominantly zonal (with a small meridional component), and differed significantly from recent NLC Type II band measurements which were dominated by strong near poleward wave motions. Evidence was also found for a reduction in gravity wave activity over the Europe/North Atlantic sector during the July 2007 period, as compared to other longitudes. These results build significantly on an initial seasonal investigation of quasi-monochromatic events by Chandran et al. (2009), and further demonstrate the high potential of CIPS data for detailed gravity wave studies. A more comprehensive investigation of the strong spatial alignments of the wave events and their longitudinal variability is currently in progress. Text North Atlantic Utah State University: DigitalCommons@USU |
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Utah State University: DigitalCommons@USU |
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topic |
high-latitude gravity wave noctilucent clouds polar mesospheric clouds Physics |
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high-latitude gravity wave noctilucent clouds polar mesospheric clouds Physics Taylor, Michael J. Pautet, P. D. Zhao, Y. Randall, C. E. Lumpe, J. Bailey, S. M. Carstens, J. Nielsen, K. Russell III, J. M. Stegman, J. High-Latitude Gravity Wave Measurements in Noctilucent Cloudsand Polar Mesospheric Clouds |
topic_facet |
high-latitude gravity wave noctilucent clouds polar mesospheric clouds Physics |
description |
Distinct wave forms traditionally observed in Noctilucent Cloud (NLC) photographs and most recently captured in high-resolution panoramic images of Polar Mesospheric Clouds (PMC) provide an exceptionally rich resource for quantifying gravity wave activity and properties in the high-latitude summer mesopause region. Using extensive image data on PMC structures obtained by the Cloud Imaging and Particle Size (CIPS) ultraviolet instrument onboard the NASA Aeronomy of Ice in the Mesosphere (AIM) satellite, we have investigated the properties of prominent quasi-monochromatic waves imaged over the northern hemisphere polar region during summer 2007. Our two-dimensional spectral analysis has focused on the peak season, July period and over 450 events have been measured. The PMC field was found to contain a broad spectrum of gravity waves with horizontal wavelengths ranging from at least 20–400 km. The smallest scale wave events (km), exhibit the highest occurrence frequency, but substantial evidence for larger-scale (>100 km) wave activity was also found. The direction of motion of the waves (both large and small-scale) deduced from their orientations (with 180° ambiguity) was predominantly zonal (with a small meridional component), and differed significantly from recent NLC Type II band measurements which were dominated by strong near poleward wave motions. Evidence was also found for a reduction in gravity wave activity over the Europe/North Atlantic sector during the July 2007 period, as compared to other longitudes. These results build significantly on an initial seasonal investigation of quasi-monochromatic events by Chandran et al. (2009), and further demonstrate the high potential of CIPS data for detailed gravity wave studies. A more comprehensive investigation of the strong spatial alignments of the wave events and their longitudinal variability is currently in progress. |
author2 |
Springer |
format |
Text |
author |
Taylor, Michael J. Pautet, P. D. Zhao, Y. Randall, C. E. Lumpe, J. Bailey, S. M. Carstens, J. Nielsen, K. Russell III, J. M. Stegman, J. |
author_facet |
Taylor, Michael J. Pautet, P. D. Zhao, Y. Randall, C. E. Lumpe, J. Bailey, S. M. Carstens, J. Nielsen, K. Russell III, J. M. Stegman, J. |
author_sort |
Taylor, Michael J. |
title |
High-Latitude Gravity Wave Measurements in Noctilucent Cloudsand Polar Mesospheric Clouds |
title_short |
High-Latitude Gravity Wave Measurements in Noctilucent Cloudsand Polar Mesospheric Clouds |
title_full |
High-Latitude Gravity Wave Measurements in Noctilucent Cloudsand Polar Mesospheric Clouds |
title_fullStr |
High-Latitude Gravity Wave Measurements in Noctilucent Cloudsand Polar Mesospheric Clouds |
title_full_unstemmed |
High-Latitude Gravity Wave Measurements in Noctilucent Cloudsand Polar Mesospheric Clouds |
title_sort |
high-latitude gravity wave measurements in noctilucent cloudsand polar mesospheric clouds |
publisher |
Hosted by Utah State University Libraries |
publishDate |
2010 |
url |
https://digitalcommons.usu.edu/physics_facpub/1160 |
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North Atlantic |
genre_facet |
North Atlantic |
op_source |
All Physics Faculty Publications |
op_relation |
https://digitalcommons.usu.edu/physics_facpub/1160 |
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 the Institutional Repository Librarian at digitalcommons@usu.edu. |
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PDM |
_version_ |
1766134393437421568 |