Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031479 |
Summertime Atmospheric Boundary Layer Gradients of O-2 and CO2 over the Southern Ocean | |
Morgan, Eric J.1; Stephens, Britton B.2; Long, Matthew C.2; Keeling, Ralph F.1; Bent, Jonathan D.2; McKain, Kathryn3,4; Sweeney, Colm4; Hoecker-Martinez, Martin S.5; Kort, Eric A.5 | |
2019-12-04 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA |
英文摘要 | We present airborne observations of the vertical gradient of atmospheric oxygen (delta(O-2/N-2)) and carbon dioxide (CO2) through the atmospheric boundary layer (BL) over the Drake Passage region of the Southern Ocean, during the O-2/N-2 Ratio and CO2 Airborne Southern Ocean Study, from 15 January to 29 February 2016. Gradients were predominately anticorrelated, with excesses of delta(O-2/N-2) and depletions of CO2 found within the boundary layer, relative to a mean reference height of 1.7 km. Through analysis of the molar ratio of the gradients (GR), the behavior of other trace gases measured in situ, and modeling experiments with the Community Earth System Model, we found that the main driver of gradients was air-sea exchange of O-2 and CO2 driven by biological processes, more so than solubility effects. An exception to this was in the eastern Drake Passage, where positive GRs were occasionally observed, likely due to the dominance of thermal forcing on the air-sea flux of both species. GRs were more spatially consistent than the magnitudes of the gradients, suggesting that GRs can provide integrated process constraints over broad spatial scales. Based on the model simulation within a domain bounded by 45 degrees S, 75 degrees S, 100 degrees W, and 45 degrees W, we show that the sampling density of the campaign was such that the observed mean GR (+/- standard error), -4.0 +/- 0.8 mol O-2 per mol CO2, was a reasonable proxy for both the mean GR and the mean molar ratio of air-sea fluxes of O-2 and CO2 during the O-2/N-2 Ratio and CO2 Airborne Southern Ocean Study. |
英文关键词 | air-sea fluxes CO2 O2 Southern Ocean |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000500404000001 |
WOS关键词 | O-2/N-2 RATIO ; AR/N-2 RATIO ; CARBON ; FLUXES ; OXYGEN ; MODELS ; CYCLE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/225839 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA; 2.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 3.Cooperat Inst Res Environm Sci, Boulder, CO USA; 4.NOAA, Boulder, CO USA; 5.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA |
推荐引用方式 GB/T 7714 | Morgan, Eric J.,Stephens, Britton B.,Long, Matthew C.,et al. Summertime Atmospheric Boundary Layer Gradients of O-2 and CO2 over the Southern Ocean[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019. |
APA | Morgan, Eric J..,Stephens, Britton B..,Long, Matthew C..,Keeling, Ralph F..,Bent, Jonathan D..,...&Kort, Eric A..(2019).Summertime Atmospheric Boundary Layer Gradients of O-2 and CO2 over the Southern Ocean.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES. |
MLA | Morgan, Eric J.,et al."Summertime Atmospheric Boundary Layer Gradients of O-2 and CO2 over the Southern Ocean".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2019). |
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