Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-4297-2018 |
Using eddy covariance to measure the dependence of air-sea CO2 exchange rate on friction velocity | |
Landwehr, Sebastian1; Miller, Scott D.2; Smith, Murray J.3; Bell, Thomas G.4; Saltzman, Eric S.5; Ward, Brian1 | |
2018-03-28 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:6页码:4297-4315 |
文章类型 | Article |
语种 | 英语 |
国家 | Ireland; USA; New Zealand; England |
英文摘要 | Parameterisation of the air-sea gas transfer velocity of CO2 and other trace gases under open-ocean conditions has been a focus of air-sea interaction research and is required for accurately determining ocean carbon uptake. Ships are the most widely used platform for air-sea flux measurements but the quality of the data can be compromised by airflow distortion and sensor cross-sensitivity effects. Recent improvements in the understanding of these effects have led to enhanced corrections to the shipboard eddy covariance (EC) measurements. Here, we present a revised analysis of eddy covariance measurements of air-sea CO2 and momentum fluxes from the Southern Ocean Surface Ocean Aerosol Production (SOAP) study. We show that it is possible to significantly reduce the scatter in the EC data and achieve consistency between measurements taken on station and with the ship underway. The gas transfer velocities from the EC measurements correlate better with the EC friction velocity (u(*)) than with mean wind speeds derived from shipboard measurements corrected with an airflow distortion model. For the observed range of wind speeds (u (10) (N) = 3-23 m s(-1)), the transfer velocities can be parameterised with a linear fit to u(*). The SOAP data are compared to previous gas transfer parameterisations using u (10) (N) computed from the EC friction velocity with the drag coefficient from the Coupled Ocean-Atmosphere Response Experiment (COARE) model version 3.5. The SOAP results are consistent with previous gas transfer studies, but at high wind speeds they do not support the sharp increase in gas transfer associated with bubble-mediated transfer predicted by physically based models. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428471900005 |
WOS关键词 | FLOW DISTORTION ; FLUX MEASUREMENTS ; GAS-EXCHANGE ; MOBILE PLATFORMS ; WATER-VAPOR ; MOMENTUM ; MOTION ; DIMETHYLSULFIDE ; TURBULENCE ; MODEL |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30851 |
专题 | 地球科学 |
作者单位 | 1.Natl Univ Ireland Galway, Sch Phys, Galway, Ireland; 2.SUNY Albany, Atmospher Sci Res Ctr, Albany, NY 12222 USA; 3.Natl Inst Water & Atmospher Res NIWA, Private Bag 14-901, Wellington, New Zealand; 4.Plymouth Marine Lab, Prospect Pl, Plymouth PL1 3DH, Devon, England; 5.Univ Calif Irvine, Earth Syst Sci, Irvine, CA USA |
推荐引用方式 GB/T 7714 | Landwehr, Sebastian,Miller, Scott D.,Smith, Murray J.,et al. Using eddy covariance to measure the dependence of air-sea CO2 exchange rate on friction velocity[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(6):4297-4315. |
APA | Landwehr, Sebastian,Miller, Scott D.,Smith, Murray J.,Bell, Thomas G.,Saltzman, Eric S.,&Ward, Brian.(2018).Using eddy covariance to measure the dependence of air-sea CO2 exchange rate on friction velocity.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(6),4297-4315. |
MLA | Landwehr, Sebastian,et al."Using eddy covariance to measure the dependence of air-sea CO2 exchange rate on friction velocity".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.6(2018):4297-4315. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论