Simultaneous observations of noctilucent clouds and polar mesosphere summer echoes at Syowa Station, Antarctica
This paper reports simultaneous observations of visible noctilucent clouds (NLC) and polar mesosphere summer echoes (PMSE) at Syowa Station (69°01′S, 38°61′E) in Antarctica. During a 1.5 h interval from 2000 to 2130 UT (2300 to 0030 LT) on Feb. 11, 2009, visible NLC were observed south of Syowa Stat...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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National Institute of Polar Research
2013-11-01
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| Series: | Antarctic Record |
| Online Access: | http://doi.org/10.15094/00009707 |
| _version_ | 1819088566567829504 |
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| author | Keisuke Hosokawa Yasuo Takeda Tadahiko Ogawa Akira Kadokura Akira Sessai Yukimatu Natsuo Sato |
| author_facet | Keisuke Hosokawa Yasuo Takeda Tadahiko Ogawa Akira Kadokura Akira Sessai Yukimatu Natsuo Sato |
| author_sort | Keisuke Hosokawa |
| collection | DOAJ |
| description | This paper reports simultaneous observations of visible noctilucent clouds (NLC) and polar mesosphere summer echoes (PMSE) at Syowa Station (69°01′S, 38°61′E) in Antarctica. During a 1.5 h interval from 2000 to 2130 UT (2300 to 0030 LT) on Feb. 11, 2009, visible NLC were observed south of Syowa Station. The oblique sounding HF radar of SuperDARN at Syowa Station simultaneously observed peculiar echoes in the closest two range gates. The echoes had a small Doppler velocity and a narrow spectral width, which are consistent with the characteristics of PMSE in the SuperDARN data. The simultaneous appearance of the visible NLC and peculiar near-range echoes observed by the HF radar suggests that the echoes were actually a signature of PMSE in the HF band. In addition, the data from the simultaneous measurements show that the spatial distributions of NLC and PMSE in the HF band were collocated with each other, which implies that oblique sounding HF radar is a useful tool for estimating the two-dimensional horizontal distribution of PMSE. |
| first_indexed | 2024-12-21T21:54:05Z |
| format | Article |
| id | doaj.art-181fec40aa7c486e985badb5b5acaff3 |
| institution | Directory Open Access Journal |
| issn | 0085-7289 2432-079X |
| language | English |
| last_indexed | 2024-12-21T21:54:05Z |
| publishDate | 2013-11-01 |
| publisher | National Institute of Polar Research |
| record_format | Article |
| series | Antarctic Record |
| spelling | doaj.art-181fec40aa7c486e985badb5b5acaff32022-12-21T18:49:00ZengNational Institute of Polar ResearchAntarctic Record0085-72892432-079X2013-11-0157331732810.15094/00009707Simultaneous observations of noctilucent clouds and polar mesosphere summer echoes at Syowa Station, AntarcticaKeisuke Hosokawa0Yasuo Takeda1Tadahiko Ogawa2Akira Kadokura3Akira Sessai Yukimatu4Natsuo Sato5Graduate School of Informatics and Engineering, University of Electro-Communications50th Japanese Antarctic Research ExpeditionNational Institute of Information and Communications TechnologyNational Institute of Polar ResearchNational Institute of Polar ResearchNational Institute of Polar ResearchThis paper reports simultaneous observations of visible noctilucent clouds (NLC) and polar mesosphere summer echoes (PMSE) at Syowa Station (69°01′S, 38°61′E) in Antarctica. During a 1.5 h interval from 2000 to 2130 UT (2300 to 0030 LT) on Feb. 11, 2009, visible NLC were observed south of Syowa Station. The oblique sounding HF radar of SuperDARN at Syowa Station simultaneously observed peculiar echoes in the closest two range gates. The echoes had a small Doppler velocity and a narrow spectral width, which are consistent with the characteristics of PMSE in the SuperDARN data. The simultaneous appearance of the visible NLC and peculiar near-range echoes observed by the HF radar suggests that the echoes were actually a signature of PMSE in the HF band. In addition, the data from the simultaneous measurements show that the spatial distributions of NLC and PMSE in the HF band were collocated with each other, which implies that oblique sounding HF radar is a useful tool for estimating the two-dimensional horizontal distribution of PMSE.http://doi.org/10.15094/00009707 |
| spellingShingle | Keisuke Hosokawa Yasuo Takeda Tadahiko Ogawa Akira Kadokura Akira Sessai Yukimatu Natsuo Sato Simultaneous observations of noctilucent clouds and polar mesosphere summer echoes at Syowa Station, Antarctica Antarctic Record |
| title | Simultaneous observations of noctilucent clouds and polar mesosphere summer echoes at Syowa Station, Antarctica |
| title_full | Simultaneous observations of noctilucent clouds and polar mesosphere summer echoes at Syowa Station, Antarctica |
| title_fullStr | Simultaneous observations of noctilucent clouds and polar mesosphere summer echoes at Syowa Station, Antarctica |
| title_full_unstemmed | Simultaneous observations of noctilucent clouds and polar mesosphere summer echoes at Syowa Station, Antarctica |
| title_short | Simultaneous observations of noctilucent clouds and polar mesosphere summer echoes at Syowa Station, Antarctica |
| title_sort | simultaneous observations of noctilucent clouds and polar mesosphere summer echoes at syowa station antarctica |
| url | http://doi.org/10.15094/00009707 |
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