DOI: 10.1002/2013JD020758
论文题名: Oscillation modes of humidity over the Amazon basin derived from GPS RO profiles
作者: Hierro R. ; Llamedo P. ; De La Torre A. ; Alexander P.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 23 起始页码: 13121
结束页码: 13127
语种: 英语
英文关键词: AMAZON
; GPS-RO
; HUMIDITY
; MODES
; OSCILLATION
Scopus关键词: Atmospheric humidity
; Ionosphere
; Water vapor
; Wavelength
; AMAZON
; GPS-RO
; High-pass filtering
; Ionosphere and climates
; MODES
; OSCILLATION
; Southern Hemisphere
; Temporal variability
; Global positioning system
; climate oscillation
; climatology
; data set
; FORMOSAT-2
; GPS
; humidity
; ionosphere
; remote sensing
; Southern Hemisphere
; trend analysis
; vertical profile
; water vapor
; Amazon Basin
英文摘要: The Global Positioning System radio occultation (GPS RO) technique provides vertical profiles of refractivity from which water vapor can be derived. It is possible to reproduce global, synoptic, and regional climatological patterns. From Formosa Satellite 3/Constellation Observing System for Meteorology Ionosphere and Climate mission data (2006-2013), the variability of the moistest region of Southern Hemisphere as the Amazon basin is analyzed. Applying different spatial and temporal filters, oscillation modes of the integrated specific humidity (Q) are found. A slight decreasing trend in Q is found during the studied period. Zonal variability of this variable averaged in time between Amazon basin latitudes presents a main mode of oscillation of a wavelength of one quarter of the Earth (T4). A secondary mode of wavelength at around T6 wavelength is also found after high-pass filtering the original signal. In turn, temporal variability averaged over Amazon basin latitudes shows a wavelength at around 12 months, while secondary modes of 6 months are found. Key Points Humidity oscillation modes over Amazon basin is verified GPS-RO allows to determine the variability of water vapor over South America A decreasing trend of humidity is found over Amazon basin ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63103
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Facultad de Ingeniería, Universidad Austral, Mariano Acosta 1901, Pilar B1629ODT, Buenos Aires, Argentina; Instituto de Física de Buenos Aires, CONICET, Ciudad Universitaria Pabellõn 1, Buenos Aires, Argentina
Recommended Citation:
Hierro R.,Llamedo P.,De La Torre A.,et al. Oscillation modes of humidity over the Amazon basin derived from GPS RO profiles[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(23)