Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region
Meteorological and atmospheric models are being extended up to 80 km altitude but there are very few observing techniques that can measure stratospheric–mesospheric winds at altitudes between 20 and 80 km to verify model datasets. Here we demonstrate the feasibility of horizontal wind profile measur...
Published in: | Atmospheric Measurement Techniques |
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Language: | English |
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Copernicus Publications
2016
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Online Access: | http://nora.nerc.ac.uk/id/eprint/512364/ https://nora.nerc.ac.uk/id/eprint/512364/1/Newnham.pdf http://www.atmos-meas-tech.net/9/3309/2016/ |
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ftnerc:oai:nora.nerc.ac.uk:512364 2023-05-15T13:49:32+02:00 Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region Newnham, D.A. Ford, G.P. Moffat-Griffin, T.A. Pumphrey, H.C. 2016-07-26 text http://nora.nerc.ac.uk/id/eprint/512364/ https://nora.nerc.ac.uk/id/eprint/512364/1/Newnham.pdf http://www.atmos-meas-tech.net/9/3309/2016/ en eng Copernicus Publications https://nora.nerc.ac.uk/id/eprint/512364/1/Newnham.pdf Newnham, D.A. orcid:0000-0001-8422-1289 Ford, G.P.; Moffat-Griffin, T.A. orcid:0000-0002-9670-6715 Pumphrey, H.C. 2016 Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region. Atmospheric Measurement Techniques, 9 (7). 3309-3323. https://doi.org/10.5194/amt-9-3309-2016 <https://doi.org/10.5194/amt-9-3309-2016> cc_by CC-BY Publication - Article PeerReviewed 2016 ftnerc https://doi.org/10.5194/amt-9-3309-2016 2023-02-04T19:42:24Z Meteorological and atmospheric models are being extended up to 80 km altitude but there are very few observing techniques that can measure stratospheric–mesospheric winds at altitudes between 20 and 80 km to verify model datasets. Here we demonstrate the feasibility of horizontal wind profile measurements using ground-based passive millimetre-wave spectroradiometric observations of ozone lines centred at 231.28, 249.79, and 249.96 GHz. Vertical profiles of horizontal winds are retrieved from forward and inverse modelling simulations of the line-of-sight Doppler-shifted atmospheric emission lines above Halley station (75°37′ S, 26°14′ W), Antarctica. For a radiometer with a system temperature of 1400 K and 30 kHz spectral resolution observing the ozone 231.28 GHz line we estimate that 12 h zonal and meridional wind profiles could be determined over the altitude range 25–74 km in winter, and 28–66 km in summer. Height-dependent measurement uncertainties are in the range 3–8 m s−1 and vertical resolution ∼ 8–16 km. Under optimum observing conditions at Halley a temporal resolution of 1.5 h for measuring either zonal or meridional winds is possible, reducing to 0.5 h for a radiometer with a 700 K system temperature. Combining observations of the 231.28 GHz ozone line and the 230.54 GHz carbon monoxide line gives additional altitude coverage at 85 ± 12 km. The effects of clear-sky seasonal mean winter/summer conditions, zenith angle of the received atmospheric emission, and spectrometer frequency resolution on the altitude coverage, measurement uncertainty, and height and time resolution of the retrieved wind profiles have been determined. Article in Journal/Newspaper Antarc* Antarctica W. Antarctica Natural Environment Research Council: NERC Open Research Archive Halley Station ENVELOPE(-26.541,-26.541,-75.581,-75.581) Atmospheric Measurement Techniques 9 7 3309 3323 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Meteorological and atmospheric models are being extended up to 80 km altitude but there are very few observing techniques that can measure stratospheric–mesospheric winds at altitudes between 20 and 80 km to verify model datasets. Here we demonstrate the feasibility of horizontal wind profile measurements using ground-based passive millimetre-wave spectroradiometric observations of ozone lines centred at 231.28, 249.79, and 249.96 GHz. Vertical profiles of horizontal winds are retrieved from forward and inverse modelling simulations of the line-of-sight Doppler-shifted atmospheric emission lines above Halley station (75°37′ S, 26°14′ W), Antarctica. For a radiometer with a system temperature of 1400 K and 30 kHz spectral resolution observing the ozone 231.28 GHz line we estimate that 12 h zonal and meridional wind profiles could be determined over the altitude range 25–74 km in winter, and 28–66 km in summer. Height-dependent measurement uncertainties are in the range 3–8 m s−1 and vertical resolution ∼ 8–16 km. Under optimum observing conditions at Halley a temporal resolution of 1.5 h for measuring either zonal or meridional winds is possible, reducing to 0.5 h for a radiometer with a 700 K system temperature. Combining observations of the 231.28 GHz ozone line and the 230.54 GHz carbon monoxide line gives additional altitude coverage at 85 ± 12 km. The effects of clear-sky seasonal mean winter/summer conditions, zenith angle of the received atmospheric emission, and spectrometer frequency resolution on the altitude coverage, measurement uncertainty, and height and time resolution of the retrieved wind profiles have been determined. |
format |
Article in Journal/Newspaper |
author |
Newnham, D.A. Ford, G.P. Moffat-Griffin, T.A. Pumphrey, H.C. |
spellingShingle |
Newnham, D.A. Ford, G.P. Moffat-Griffin, T.A. Pumphrey, H.C. Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region |
author_facet |
Newnham, D.A. Ford, G.P. Moffat-Griffin, T.A. Pumphrey, H.C. |
author_sort |
Newnham, D.A. |
title |
Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region |
title_short |
Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region |
title_full |
Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region |
title_fullStr |
Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region |
title_full_unstemmed |
Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region |
title_sort |
simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 ghz region |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
http://nora.nerc.ac.uk/id/eprint/512364/ https://nora.nerc.ac.uk/id/eprint/512364/1/Newnham.pdf http://www.atmos-meas-tech.net/9/3309/2016/ |
long_lat |
ENVELOPE(-26.541,-26.541,-75.581,-75.581) |
geographic |
Halley Station |
geographic_facet |
Halley Station |
genre |
Antarc* Antarctica W. Antarctica |
genre_facet |
Antarc* Antarctica W. Antarctica |
op_relation |
https://nora.nerc.ac.uk/id/eprint/512364/1/Newnham.pdf Newnham, D.A. orcid:0000-0001-8422-1289 Ford, G.P.; Moffat-Griffin, T.A. orcid:0000-0002-9670-6715 Pumphrey, H.C. 2016 Simulation study for measurement of horizontal wind profiles in the polar stratosphere and mesosphere using ground-based observations of ozone and carbon monoxide lines in the 230–250 GHz region. Atmospheric Measurement Techniques, 9 (7). 3309-3323. https://doi.org/10.5194/amt-9-3309-2016 <https://doi.org/10.5194/amt-9-3309-2016> |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/amt-9-3309-2016 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
9 |
container_issue |
7 |
container_start_page |
3309 |
op_container_end_page |
3323 |
_version_ |
1766251514681098240 |