DOI: 10.1002/2017JD028029
Scopus记录号: 2-s2.0-85045852675
论文题名: Observed Responses of Mesospheric Water Vapor to Solar Cycle and Dynamical Forcings
作者: Remsberg E. ; Damadeo R. ; Natarajan M. ; Bhatt P.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 7 起始页码: 3830
结束页码: 3843
语种: 英语
英文关键词: dynamical forcing
; HALOE
; mesosphere
; regression
; response to solar cycle
; water vapor
Scopus关键词: atmospheric forcing
; El Nino-Southern Oscillation
; mesosphere
; Northern Hemisphere
; regression analysis
; solar activity
; solar cycle
; spatiotemporal analysis
; water vapor
; wavelength
; zonal wind
英文摘要: This study focuses on responses of mesospheric water vapor (H2O) to the solar cycle flux at Lyman-α wavelength and to dynamical forcings according to the multivariate El-Nino/Southern Oscillation (ENSO) index. The zonal-averaged responses are for latitudes from 60°S to 60°N and pressure-altitudes from 0.01 to 1.0 hPa, as obtained from multiple linear regression analyses of time series of H2O from the Halogen Occultation Experiment for July 1992 to November 2005. The results compare very well with those from a separate simultaneous temporal and spatial (STS) method that also confirms that there are no significant sampling biases affecting both sets of results. Distributions of the seasonal amplitudes for temperature and H2O are in accord with the seasonal net circulation. In general, the responses of H2O to ENSO are anticorrelated with those of temperature. H2O responses to multivariate ENSO index are negative in the upper mesosphere and largest in the Northern Hemisphere; responses in the lower mesosphere are more symmetric with latitude. H2O responses to the Lyman-α flux (Lya) vary from strong negative values in the uppermost mesosphere to very weak, positive values in the tropical lowermost mesosphere. However, the effects of those H2O responses to the solar activity extend to the rest of the mesosphere via dynamical processes. Profiles of the responses to ENSO and Lya also agree reasonably with published results for H2O at the low latitudes from the Microwave Limb Sounder. ©2018. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114080
Appears in Collections: 气候减缓与适应
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作者单位: Science Directorate, NASA Langley Research Center, Hampton, VA, United States; Robinhood, Palo Alto, CA, United States
Recommended Citation:
Remsberg E.,Damadeo R.,Natarajan M.,et al. Observed Responses of Mesospheric Water Vapor to Solar Cycle and Dynamical Forcings[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(7)