DOI: 10.1002/2016GL071017
论文题名: Using GPS radio occultations to infer the water vapor feedback
作者: Vergados P. ; Mannucci A.J. ; Ao C.O. ; Fetzer E.J.
刊名: Geophysical Research Letters
ISSN: 0094-8386
EISSN: 1944-8117
出版年: 2016
卷: 43, 期: 22 起始页码: 11841
结束页码: 11851
语种: 英语
英文关键词: air refractive index
; COSMIC
; GPS
; radio occultation
; upper troposphere
; water vapor feedback
Scopus关键词: Atmospheric humidity
; Atmospheric temperature
; Cosmology
; Global positioning system
; NASA
; Radio
; Refractive index
; Surface properties
; Air refractive index
; COSMIC
; Radio occultations
; Upper troposphere
; Water vapor feedbacks
; Water vapor
英文摘要: The air refractive index at L-band frequencies depends on the air's water vapor content and density. Exploiting this relationship, we derive for the first time a theoretical model to infer the specific humidity response to surface temperature variations, dq/dTs, given knowledge of how the air refractive index and temperature vary with surface temperature. We validate this model by using 1.2–1.6 GHz Global Positioning System Radio Occultation (GPS RO) observations from 2007 to 2010 at 250 hPa, where the water vapor feedback on surface warming is strongest. The dq/dTs estimation from GPS RO observations shows excellent agreement with previously published results and the responses estimated by using the Atmospheric Infrared Sounder and the NASA's Modern-Era Retrospective Analysis for Research and Applications data sets. Because of their high sensitivity to fractional changes in water vapor, current and future GPS RO observations show great promise in monitoring climate feedback and their trends. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85003827439&doi=10.1002%2f2016GL071017&partnerID=40&md5=4e8efb6d158dff5ce8b3cf1d260b7191
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9349
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Vergados P.,Mannucci A.J.,Ao C.O.,et al. Using GPS radio occultations to infer the water vapor feedback[J]. Geophysical Research Letters,2016-01-01,43(22).