Planetary-scale wave structures of the earth’s atmosphere revealed from the COSMIC observations

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题名:	Planetary-scale wave structures of the earth’s atmosphere revealed from the COSMIC observations
作者:	黃清勇;Anisetty, S. K. A. V. Prasad Rao;Brahmanandam, P. S.;Uma, G.;Babu, A. Narendra;Huang, Ching-Yuang;Kumar, G. Anil;Ram, S. Tulasi;Wang, Hsiao-Lan;Chu, Yen-Hsyang
贡献者:	地球科學學院大氣科學學系
关键词:	Atmospheric Protection/Air Quality Control/Air Pollution;Atmospheric Sciences;Earth and Environmental Science;Earth Sciences;Geophysics and Environmental Physics;Meteorology
日期:	2014-01-01
上传时间:	2026-04-21 13:52:54 (UTC+8)
出版者:	Chinese Meteorological Society;Heidelberg: The Chinese Meteorological Society
摘要:	摘要： GPS radio occultation (GPS RO) method, an active satellite-to-satellite remote sensing technique, is capable of producing accurate, all-weather, round the clock, global refractive index, density, pressure, and temperature profiles of the troposphere and stratosphere. This study presents planetary-scale equatorially trapped Kelvin waves in temperature profiles retrieved using COSMIC (Constellation Observing System for Meteorology, Ionosphere, and Climate) satellites during 2006–2009 and their interactions with background atmospheric conditions. It is found that the Kelvin waves are not only associated with wave periods of higher than 10 days (slow Kelvin waves) with higher zonal wave numbers (either 1 or 2), but also possessing downward phase progression, giving evidence that the source regions of them are located at lower altitudes. A thorough verification of outgoing longwave radiation (OLR) reveals that deep convection activity has developed regularly over the Indonesian region, suggesting that the Kelvin waves are driven by the convective activity. The derived Kelvin waves show enhanced (diminished) tendencies during westward (eastward) phase of the quasi-biennial oscillation (QBO) in zonal winds, implying a mutual relation between both of them. The El Niño and Southern Oscillation (ENSO) below 18 km and the QBO features between 18 and 27 km in temperature profiles are observed during May 2006–May 2010 with the help of an adaptive data analysis technique known as Hilbert Huang Transform (HHT). Further, temperature anomalies computed using COSMIC retrieved temperatures are critically evaluated during different phases of ENSO, which has revealed interesting results and are discussed in light of available literature. 其他題名： J Meteorol Res 出版者： Heidelberg: The Chinese Meteorological Society 出版日期： 2014-02-01 出處： Acta meteorologica Sinica, 2014-02, Vol.28 (2), p.281-295 資源來源： China Online Journals (COJ) 版權： The Chinese Meteorological Society and Springer-Verlag Berlin Heidelberg 2014 版權： Copyright © Wanfang Data Co. Ltd. All Rights Reserved. 識別號： ISSN: 2095-6037 識別號： ISSN: 0894-0525 識別號： EISSN: 2198-0934 識別號： EISSN: 2191-4788 識別號： DOI: 10.1007/s13351-014-0101-y
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