Climatology of the mesopause relative density using a global distribution of meteor radars
The existing distribution of meteor radars located from high- to low-latitude regions provides a favorable temporal and spatial coverage for investigating the climatology of the global mesopause density. In this study, we report the climatology of the mesopause relative density estimated using multi...
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ftdoajarticles:oai:doaj.org/article:6dd205ea63d146659d394a454a40e429 2023-05-15T18:29:46+02:00 Climatology of the mesopause relative density using a global distribution of meteor radars W. Yi X. Xue I. M. Reid D. J. Murphy C. M. Hall M. Tsutsumi B. Ning G. Li R. A. Vincent J. Chen J. Wu T. Chen X. Dou 2019-06-01T00:00:00Z https://doi.org/10.5194/acp-19-7567-2019 https://doaj.org/article/6dd205ea63d146659d394a454a40e429 EN eng Copernicus Publications https://www.atmos-chem-phys.net/19/7567/2019/acp-19-7567-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-7567-2019 1680-7316 1680-7324 https://doaj.org/article/6dd205ea63d146659d394a454a40e429 Atmospheric Chemistry and Physics, Vol 19, Pp 7567-7581 (2019) Physics QC1-999 Chemistry QD1-999 article 2019 ftdoajarticles https://doi.org/10.5194/acp-19-7567-2019 2022-12-31T01:34:29Z The existing distribution of meteor radars located from high- to low-latitude regions provides a favorable temporal and spatial coverage for investigating the climatology of the global mesopause density. In this study, we report the climatology of the mesopause relative density estimated using multiyear observations from nine meteor radars, namely, the Davis Station (68.6 ∘ S, 77.9 ∘ E), Svalbard (78.3 ∘ N, 16 ∘ E) and Tromsø (69.6 ∘ N, 19.2 ∘ E) meteor radars located at high latitudes; the Mohe (53.5 ∘ N, 122.3 ∘ E), Beijing (40.3 ∘ N, 116.2 ∘ E), Mengcheng (33.4 ∘ N, 116.6 ∘ E) and Wuhan (30.5 ∘ N, 114.6 ∘ E) meteor radars located in the midlatitudes; and the Kunming (25.6 ∘ N, 103.8 ∘ E) and Darwin (12.3 ∘ S, 130.8 ∘ E) meteor radars located at low latitudes. The daily mean relative density was estimated using ambipolar diffusion coefficients derived from the meteor radars and temperatures from the Microwave Limb Sounder (MLS) on board the Aura satellite. The seasonal variations in the Davis Station meteor radar relative densities in the southern polar mesopause are mainly dominated by an annual oscillation (AO). The mesopause relative densities observed by the Svalbard and Tromsø meteor radars at high latitudes and the Mohe and Beijing meteor radars at high midlatitudes in the Northern Hemisphere show mainly an AO and a relatively weak semiannual oscillation (SAO). The mesopause relative densities observed by the Mengcheng and Wuhan meteor radars at lower midlatitudes and the Kunming and Darwin meteor radars at low latitudes show mainly an AO. The SAO is evident in the Northern Hemisphere, especially at high latitudes, and its largest amplitude, which is detected at the Tromsø meteor radar, is comparable to the AO amplitudes. These observations indicate that the mesopause relative densities over the southern and northern high latitudes exhibit a clear seasonal asymmetry. The maxima of the yearly variations in the mesopause relative densities display a clear latitudinal variation across the spring equinox as ... Article in Journal/Newspaper Svalbard Tromsø Directory of Open Access Journals: DOAJ Articles Svalbard Tromsø Davis Station ENVELOPE(77.968,77.968,-68.576,-68.576) Davis-Station ENVELOPE(77.968,77.968,-68.576,-68.576) Atmospheric Chemistry and Physics 19 11 7567 7581 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
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Physics QC1-999 Chemistry QD1-999 W. Yi X. Xue I. M. Reid D. J. Murphy C. M. Hall M. Tsutsumi B. Ning G. Li R. A. Vincent J. Chen J. Wu T. Chen X. Dou Climatology of the mesopause relative density using a global distribution of meteor radars |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The existing distribution of meteor radars located from high- to low-latitude regions provides a favorable temporal and spatial coverage for investigating the climatology of the global mesopause density. In this study, we report the climatology of the mesopause relative density estimated using multiyear observations from nine meteor radars, namely, the Davis Station (68.6 ∘ S, 77.9 ∘ E), Svalbard (78.3 ∘ N, 16 ∘ E) and Tromsø (69.6 ∘ N, 19.2 ∘ E) meteor radars located at high latitudes; the Mohe (53.5 ∘ N, 122.3 ∘ E), Beijing (40.3 ∘ N, 116.2 ∘ E), Mengcheng (33.4 ∘ N, 116.6 ∘ E) and Wuhan (30.5 ∘ N, 114.6 ∘ E) meteor radars located in the midlatitudes; and the Kunming (25.6 ∘ N, 103.8 ∘ E) and Darwin (12.3 ∘ S, 130.8 ∘ E) meteor radars located at low latitudes. The daily mean relative density was estimated using ambipolar diffusion coefficients derived from the meteor radars and temperatures from the Microwave Limb Sounder (MLS) on board the Aura satellite. The seasonal variations in the Davis Station meteor radar relative densities in the southern polar mesopause are mainly dominated by an annual oscillation (AO). The mesopause relative densities observed by the Svalbard and Tromsø meteor radars at high latitudes and the Mohe and Beijing meteor radars at high midlatitudes in the Northern Hemisphere show mainly an AO and a relatively weak semiannual oscillation (SAO). The mesopause relative densities observed by the Mengcheng and Wuhan meteor radars at lower midlatitudes and the Kunming and Darwin meteor radars at low latitudes show mainly an AO. The SAO is evident in the Northern Hemisphere, especially at high latitudes, and its largest amplitude, which is detected at the Tromsø meteor radar, is comparable to the AO amplitudes. These observations indicate that the mesopause relative densities over the southern and northern high latitudes exhibit a clear seasonal asymmetry. The maxima of the yearly variations in the mesopause relative densities display a clear latitudinal variation across the spring equinox as ... |
format |
Article in Journal/Newspaper |
author |
W. Yi X. Xue I. M. Reid D. J. Murphy C. M. Hall M. Tsutsumi B. Ning G. Li R. A. Vincent J. Chen J. Wu T. Chen X. Dou |
author_facet |
W. Yi X. Xue I. M. Reid D. J. Murphy C. M. Hall M. Tsutsumi B. Ning G. Li R. A. Vincent J. Chen J. Wu T. Chen X. Dou |
author_sort |
W. Yi |
title |
Climatology of the mesopause relative density using a global distribution of meteor radars |
title_short |
Climatology of the mesopause relative density using a global distribution of meteor radars |
title_full |
Climatology of the mesopause relative density using a global distribution of meteor radars |
title_fullStr |
Climatology of the mesopause relative density using a global distribution of meteor radars |
title_full_unstemmed |
Climatology of the mesopause relative density using a global distribution of meteor radars |
title_sort |
climatology of the mesopause relative density using a global distribution of meteor radars |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/acp-19-7567-2019 https://doaj.org/article/6dd205ea63d146659d394a454a40e429 |
long_lat |
ENVELOPE(77.968,77.968,-68.576,-68.576) ENVELOPE(77.968,77.968,-68.576,-68.576) |
geographic |
Svalbard Tromsø Davis Station Davis-Station |
geographic_facet |
Svalbard Tromsø Davis Station Davis-Station |
genre |
Svalbard Tromsø |
genre_facet |
Svalbard Tromsø |
op_source |
Atmospheric Chemistry and Physics, Vol 19, Pp 7567-7581 (2019) |
op_relation |
https://www.atmos-chem-phys.net/19/7567/2019/acp-19-7567-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-7567-2019 1680-7316 1680-7324 https://doaj.org/article/6dd205ea63d146659d394a454a40e429 |
op_doi |
https://doi.org/10.5194/acp-19-7567-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
11 |
container_start_page |
7567 |
op_container_end_page |
7581 |
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