First observations of polar mesosphere summer echoes in Antarctica
A 25‐kW peak power 50‐MHz radar was installed at the Peruvian base on King George Island, Antarctica (62°S), in early 1993. A search for polar mesospheric summer echoes (PMSEs) was made during late January and early February of the first year of operation with negative results. These results have be...
Published in: | Journal of Geophysical Research: Space Physics |
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American Geophysical Union
1999
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ftinstgpperu:oai:repositorio.igp.gob.pe:20.500.12816/3947 2023-07-30T03:58:14+02:00 First observations of polar mesosphere summer echoes in Antarctica Woodman Pollitt, Ronald Francisco Balsley, B. B. Aquino, F. Flores, L. Vásquez, E. Sarango, M. Huamán, M. M. Soldi, H. 1999-10-01 application/pdf https://hdl.handle.net/20.500.12816/3947 https://doi.org/10.1029/1999JA900226 eng eng American Geophysical Union urn:issn:2169-9380 Woodman, R. F., Balsley, B. B., Aquino, F., Flores, L., Vásquez, E., Sarango, M., . Soldi, H. (1999). First observations of polar mesosphere summer echoes in Antarctica.==$Journal of Geophysical Research: Space Physics, 104$==(A10), 22577-22590. https://doi.org/10.1029/1999JA900226 index-oti2018 http://hdl.handle.net/20.500.12816/3947 Journal of Geophysical Research: Space Physics https://doi.org/10.1029/1999JA900226 info:eu-repo/semantics/restrictedAccess Polar echoes Equatorial field PMSE Comparative data http://purl.org/pe-repo/ocde/ford#1.05.01 info:eu-repo/semantics/article 1999 ftinstgpperu https://doi.org/20.500.12816/394710.1029/1999JA900226 2023-07-17T16:51:05Z A 25‐kW peak power 50‐MHz radar was installed at the Peruvian base on King George Island, Antarctica (62°S), in early 1993. A search for polar mesospheric summer echoes (PMSEs) was made during late January and early February of the first year of operation with negative results. These results have been reported in the literature [Balsley et al., 1993; 1995]. We report here results obtained during the austral summer of the second year (1994) of operation. Observations during the second year were begun earlier, i.e., closer to the austral summer solstice. PMSEs were observed during this period, albeit the echoes were much weaker than what one would expect based on earlier Poker Flat radar results at a comparable latitude (65°N) in the Northern Hemisphere. A large and measurable asymmetry in PMSE strength in the two hemispheres therefore exists. We explain this asymmetry by postulating a difference in summer mesopause temperatures between the two hemispheres of ∼7.5 K. This difference has been estimated using an empirical relationship between the variations of the Poker Flat PMSE power as a function of temperature given by the mass spectrometer incoherent scatter extended (MSISE‐90) model. Por pares Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal King George Island Repositorio Geofísico Naciona del Perú Austral King George Island Journal of Geophysical Research: Space Physics 104 A10 22577 22590 |
institution |
Open Polar |
collection |
Repositorio Geofísico Naciona del Perú |
op_collection_id |
ftinstgpperu |
language |
English |
topic |
Polar echoes Equatorial field PMSE Comparative data http://purl.org/pe-repo/ocde/ford#1.05.01 |
spellingShingle |
Polar echoes Equatorial field PMSE Comparative data http://purl.org/pe-repo/ocde/ford#1.05.01 Woodman Pollitt, Ronald Francisco Balsley, B. B. Aquino, F. Flores, L. Vásquez, E. Sarango, M. Huamán, M. M. Soldi, H. First observations of polar mesosphere summer echoes in Antarctica |
topic_facet |
Polar echoes Equatorial field PMSE Comparative data http://purl.org/pe-repo/ocde/ford#1.05.01 |
description |
A 25‐kW peak power 50‐MHz radar was installed at the Peruvian base on King George Island, Antarctica (62°S), in early 1993. A search for polar mesospheric summer echoes (PMSEs) was made during late January and early February of the first year of operation with negative results. These results have been reported in the literature [Balsley et al., 1993; 1995]. We report here results obtained during the austral summer of the second year (1994) of operation. Observations during the second year were begun earlier, i.e., closer to the austral summer solstice. PMSEs were observed during this period, albeit the echoes were much weaker than what one would expect based on earlier Poker Flat radar results at a comparable latitude (65°N) in the Northern Hemisphere. A large and measurable asymmetry in PMSE strength in the two hemispheres therefore exists. We explain this asymmetry by postulating a difference in summer mesopause temperatures between the two hemispheres of ∼7.5 K. This difference has been estimated using an empirical relationship between the variations of the Poker Flat PMSE power as a function of temperature given by the mass spectrometer incoherent scatter extended (MSISE‐90) model. Por pares |
format |
Article in Journal/Newspaper |
author |
Woodman Pollitt, Ronald Francisco Balsley, B. B. Aquino, F. Flores, L. Vásquez, E. Sarango, M. Huamán, M. M. Soldi, H. |
author_facet |
Woodman Pollitt, Ronald Francisco Balsley, B. B. Aquino, F. Flores, L. Vásquez, E. Sarango, M. Huamán, M. M. Soldi, H. |
author_sort |
Woodman Pollitt, Ronald Francisco |
title |
First observations of polar mesosphere summer echoes in Antarctica |
title_short |
First observations of polar mesosphere summer echoes in Antarctica |
title_full |
First observations of polar mesosphere summer echoes in Antarctica |
title_fullStr |
First observations of polar mesosphere summer echoes in Antarctica |
title_full_unstemmed |
First observations of polar mesosphere summer echoes in Antarctica |
title_sort |
first observations of polar mesosphere summer echoes in antarctica |
publisher |
American Geophysical Union |
publishDate |
1999 |
url |
https://hdl.handle.net/20.500.12816/3947 https://doi.org/10.1029/1999JA900226 |
geographic |
Austral King George Island |
geographic_facet |
Austral King George Island |
genre |
Antarc* Antarctica Antarctica Journal King George Island |
genre_facet |
Antarc* Antarctica Antarctica Journal King George Island |
op_relation |
urn:issn:2169-9380 Woodman, R. F., Balsley, B. B., Aquino, F., Flores, L., Vásquez, E., Sarango, M., . Soldi, H. (1999). First observations of polar mesosphere summer echoes in Antarctica.==$Journal of Geophysical Research: Space Physics, 104$==(A10), 22577-22590. https://doi.org/10.1029/1999JA900226 index-oti2018 http://hdl.handle.net/20.500.12816/3947 Journal of Geophysical Research: Space Physics https://doi.org/10.1029/1999JA900226 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/20.500.12816/394710.1029/1999JA900226 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
104 |
container_issue |
A10 |
container_start_page |
22577 |
op_container_end_page |
22590 |
_version_ |
1772821101277085696 |