Particle-Size Variability of Aerosol Iron and Impact on Iron Solubility and Dry Deposition Fluxes to the Arctic Ocean
| Autor: | William M. Landing, Shun Yu, Songyun Fan, Yuan Gao, Pami Mukherjee, Clifton S. Buck, Chris M. Marsay |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
010504 meteorology & atmospheric sciences
Geotraces lcsh:Medicine 010501 environmental sciences 01 natural sciences complex mixtures Article Atmosphere Solubility lcsh:Science 0105 earth and related environmental sciences Multidisciplinary Global warming lcsh:R Biogeochemistry respiratory system The arctic Aerosol Environmental sciences Ocean sciences Arctic 13. Climate action Environmental chemistry Environmental science lcsh:Q Particle size geographic locations |
| Zdroj: | Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | This study provides unique insights into the properties of iron (Fe) in the marine atmosphere over the late summertime Arctic Ocean. Atmospheric deposition of aerosols can deliver Fe, a limiting micronutrient, to the remote ocean. Aerosol particle size influences aerosol Fe fractional solubility and air-to-sea deposition rate. Size-segregated aerosols were collected during the 2015 US GEOTRACES cruise in the Arctic Ocean. Results show that aerosol Fe had a single-mode size distribution, peaking at 4.4 µm in diameter, suggesting regional dust sources of Fe around the Arctic Ocean. Estimated dry deposition rates of aerosol Fe decreased from 6.1 µmol m−2 yr−1 in the areas of ~56°N–80°N to 0.73 µmol m−2 yr−1 in the areas north of 80°N. Aerosol Fe solubility was higher in fine particles ( |
| Databáze: | OpenAIRE |
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