Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD032082 |
Particle-Size Distributions and Solubility of Aerosol Iron Over the Antarctic Peninsula During Austral Summer | |
Gao, Yuan1; Yu, Shun1; Sherrell, Robert M.2,3; Fan, Songyun1; Bu, Kaixuan2; Anderson, James R.4 | |
2020-06-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This study provides new data on the properties of aerosol iron (Fe) over the Antarctic Peninsula, one of the fastest warming regions on Earth in recent decades. Atmospheric deposition delivers Fe, a limiting micronutrient, to the Southern Ocean, and aerosol particle size influences the air-to-sea deposition rate and fractional solubility of aerosol Fe. Size-segregated aerosols were collected at Palmer Station on the West Antarctic Peninsula during austral summer 2016-2017. Results show single-mode size distribution of aerosol Fe, peaking at 4.4 mu m diameter. The average concentration of total aerosol Fe was 1.3 (0.40) ng m(-3) (range 0.74-1.8 ng m(-3)). High concentrations of total aerosol Fe occurred in January, implying increased Fe source strength then. Total labile Fe varied between 0.019 and 0.095 ng m(-3), and labile Fe (II) accounted for similar to 90% of the total labile Fe. The average fractional solubility for total Fe was 3.8% (1.5%) (range 2.5-7.3%). Estimated dry deposition fluxes for the study period were 3.2 mu g m(-2) year(-1) for total labile Fe and 83 mu g m(-2) year(-1) for total Fe in aerosols. We speculate that local and regional dust sources in Antarctica contributed to the observed aerosol Fe in austral summer and that warming on the Antarctic Peninsula during the past half century may have increased the formation of dust sources in this region. The potential biogeochemical impact of atmospheric Fe input to the West Antarctic Peninsula shelf waters and adjacent pelagic surface waters of the Southern Ocean may need to be re-evaluated. |
英文关键词 | aerosol iron aerosol Fe solubility aerosol particle size Antarctic Peninsula atmospheric iron deposition flux |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000541156800022 |
WOS关键词 | TRACE-METAL CONCENTRATIONS ; PINE ISLAND GLACIER ; SOUTHERN-OCEAN ; MINERAL DUST ; ATMOSPHERIC IRON ; DRY DEPOSITION ; SEA-ICE ; BIOGEOCHEMICAL CYCLE ; MULTIPLE SOURCES ; WEST ANTARCTICA |
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/289465 |
专题 | 气候变化 |
作者单位 | 1.Rutgers State Univ, Dept Earth & Environm Sci, Newark, NJ 07103 USA; 2.Rutgers State Univ, Dept Marine & Coastal Sci, New Brunswick, NJ USA; 3.Rutgers State Univ, Dept Earth & Planetary Sci, Piscataway, NJ USA; 4.Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ USA |
推荐引用方式 GB/T 7714 | Gao, Yuan,Yu, Shun,Sherrell, Robert M.,et al. Particle-Size Distributions and Solubility of Aerosol Iron Over the Antarctic Peninsula During Austral Summer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(11). |
APA | Gao, Yuan,Yu, Shun,Sherrell, Robert M.,Fan, Songyun,Bu, Kaixuan,&Anderson, James R..(2020).Particle-Size Distributions and Solubility of Aerosol Iron Over the Antarctic Peninsula During Austral Summer.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(11). |
MLA | Gao, Yuan,et al."Particle-Size Distributions and Solubility of Aerosol Iron Over the Antarctic Peninsula During Austral Summer".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.11(2020). |
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