Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026833 |
Investigating Local and Remote Terrestrial Influence on Air Masses at Contrasting Antarctic Sites Using Radon-222 and Back Trajectories | |
Chambers, S. D.1; Choi, T.2; Park, S. -J.2; Williams, A. G.1; Hong, S. -B.2; Tositti, L.3; Griffiths, A. D.1; Crawford, J.1; Pereira, E.4 | |
2017-12-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:24 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; South Korea; Italy; Brazil |
英文摘要 | We report on the first summer of high-sensitivity radon measurements from a two-filter detector at Jang Bogo Station (Terra Nova Bay) and contrast them with simultaneous observations at King Sejong Station (King George Island). King Sejong radon concentrations were characteristic of a marine baseline station (0.02-0.3 Bq m(-3)), whereas Jang Bogo values were highly variable (0.06-5.2 Bq m(-3)), mainly due to emissions from exposed coastal ground (estimated mean flux 0.09-0.11atomscm(-2)s(-1)) and shallow atmospheric mixing depths. For wind speeds of <= 3.5ms(-1) the influence of local radon emissions became increasingly more prominent at both sites. A cluster analysis of back trajectories from King Sejong (62 degrees S) revealed a fairly even distribution between air masses that had passed recently over South America, the Southern Ocean, and Antarctica, whereas at Jang Bogo (75 degrees S) 80% of events had recently passed over the Ross Ice Shelf and West Antarctica, 12% were synoptically forced over Cape Adare, and 8% were associated with subsidence over the Antarctic interior and katabatic flow to the station. When cross-checked against radon concentrations, only half of the back trajectories ending at Jang Bogo that had indicated distant contact with nonpolar southern hemisphere continents within the past 10days showed actual signs of terrestrial influence. A simple-to-implement technique based on high-pass filtered absolute humidity is developed to distinguish between predominantly katabatic, oceanic, and near-coastal air masses for characterization of trace gas and aerosol measurements at coastal East Antarctic sites. |
英文关键词 | radon-222 Antarctica |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419950200010 |
WOS关键词 | KING-GEORGE ISLAND ; ROSS ICE SHELF ; BOUNDARY-LAYER ; ATMOSPHERIC TRANSPORT ; SOUTHERN-HEMISPHERE ; COASTAL ANTARCTICA ; RADON MEASUREMENTS ; GLOBAL-MODELS ; CLIMATE ; CORE |
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/33306 |
专题 | 气候变化 |
作者单位 | 1.Australian Nucl Sci & Technol Org, Kirrawee Dc, NSW, Australia; 2.Korea Polar Res Inst, Incheon, South Korea; 3.Univ Bologna, Lab Radiochim Ambientale, Dipartimento Chim G Ciamician, Bologna, Italy; 4.Inst Nacl Pesquisas Espaciais, Sao Jose Dos Campos, Brazil |
推荐引用方式 GB/T 7714 | Chambers, S. D.,Choi, T.,Park, S. -J.,et al. Investigating Local and Remote Terrestrial Influence on Air Masses at Contrasting Antarctic Sites Using Radon-222 and Back Trajectories[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(24). |
APA | Chambers, S. D..,Choi, T..,Park, S. -J..,Williams, A. G..,Hong, S. -B..,...&Pereira, E..(2017).Investigating Local and Remote Terrestrial Influence on Air Masses at Contrasting Antarctic Sites Using Radon-222 and Back Trajectories.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(24). |
MLA | Chambers, S. D.,et al."Investigating Local and Remote Terrestrial Influence on Air Masses at Contrasting Antarctic Sites Using Radon-222 and Back Trajectories".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.24(2017). |
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