Disturbances of 1-2 Hour-Periods Observed in the Tropical Lower Troposphere during the TOGA-COARE IOP
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- Shige Shoichi
- Disaster Prevention Research Institute, Kyoto University present affiliation: Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto University
Bibliographic Information
- Other Title
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- TOGA-COARE IOP期間中に熱帯対流圏下層で観測された周期1~2時間の擾乱
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Abstract
Mesoscale disturbances in the tropical lower troposphere having periods of 1-2 hours were detected in the wind profiler data during the intensive observing period of the Tropical Ocean-Global Atmosphere Coupled Ocean-Atmosphere Response Experiment (TOGA-COARE). Seven cases were detected with average amplitudes of the vertical velocity greater than 0.1ms-1.<br>One case that was observed at Kapingamarangi (1.1°N, 154.8°E) on January 7, 1993 was examined in detail. This disturbance had a period of 60 minutes and a duration of 6 hours. Assuming that this disturbance was a gravity wave, the vertical and horizontal wavelengths were estimated as 5.4-7.6km and 24-37km, respectively. Using satellite and sounding data, it was inferred that the disturbance was excited by a mesoscale cloud line lying about 400km ESE from Kapingamarangi, and then propagated in a wave duct in the troposphere.
Journal
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- Journal of the Meteorological Society of Japan. Ser. II
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Journal of the Meteorological Society of Japan. Ser. II 77 (6), 1123-1136, 1999
Meteorological Society of Japan
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Details 詳細情報について
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- CRID
- 1390282681483748352
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- NII Article ID
- 110001807578
- 130007347229
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- NII Book ID
- AN00317933
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- ISSN
- 21869057
- 00261165
- http://id.crossref.org/issn/00261165
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- NDL BIB ID
- 4951257
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- Data Source
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- Abstract License Flag
- Disallowed