DOI: 10.1002/jgrd.50594
论文题名: Air-sea gas transfer rate for the Southern Ocean inferred from 222Rn concentrations in maritime air and a global atmospheric transport model
作者: Taguchi S. ; Tasaka S. ; Matsubara M. ; Osada K. ; Yokoi T. ; Yamanouchi T.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 14 起始页码: 7606
结束页码: 7616
语种: 英语
英文关键词: air sea gas exchange
; Antarctic sea
; atmospheric transport model
; inverse method
; radon-222
; reanalysis data
Scopus关键词: Atmospheric movements
; Inverse problems
; Mean square error
; Mixing
; Models
; Radon
; Regression analysis
; Wind effects
; Antarctic sea
; Atmospheric transport model
; Gas exchange
; Inverse methods
; Radon-222
; Reanalysis
; Oceanography
; air-sea interaction
; atmospheric modeling
; atmospheric transport
; concentration (composition)
; data set
; gas transport
; radon isotope
; wind velocity
; Antarctica
; Southern Ocean
英文摘要: Measurements of atmospheric 222Rn activity were made on board the icebreaker Shirase during the summers of 2004 and 2005, between 32°S and 69°S. Global atmospheric 3-D model calculation of 222Rn were conducted using hypothetical emissions from ocean and land including the Antarctic continent. Oceanic emissions were estimated based on wind speed parameterizations from the literature and by using radium in the ocean as a surrogate of surface radon concentrations. Modeled results suggest that a significant part of the measured activities originate from a release from the ocean and the Antarctic continent. Based on regression analysis, we investigated the power-law description of wind speed that best fits the measured concentrations. The correlation, root mean square errors, and emission from the Antarctic continent suggest that a 3.5 power law best fits the measured activities. However, the merit of this choice is not statistically significant, and the proportionality factor that scales a wind speed description with a flux depends on the dilution of radon in the mixing layer of the ocean. These weaknesses, therefore, pose a limitation for the application of the current parameterization to the other gases. Key Points Atmospheric Rn over Antarctic Ocean came from the ocean and the Antarctic A 3.5 power law of hourly wind best fitted the measured concentrations Magnitude of the flux depends on the dilution of Rn in the mixing layer ©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/63554
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: National Institute of Advanced Industrial Science and Technology, AIST-WEST, 16-1, Onogawa, Tsukuba, Ibaraki, 305-8569, Japan; Information and Multimedia Center, Gifu University, Gifu, Japan; Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan; NIES, Tsukuba, Japan; NIPR, Tokyo, Japan
Recommended Citation:
Taguchi S.,Tasaka S.,Matsubara M.,et al. Air-sea gas transfer rate for the Southern Ocean inferred from 222Rn concentrations in maritime air and a global atmospheric transport model[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(14)