Aerosol Fe cycling in the surface water of the Northwestern Pacific ocean
| Autor: | Bo-Shian Wang, Tung-Yuan Ho |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences 010604 marine biology & hydrobiology Geotraces fungi Geology Aquatic Science Particulates Residence time (fluid dynamics) 01 natural sciences Aerosol Deposition (aerosol physics) Oceanography Environmental chemistry Environmental science Photic zone Seawater Surface water 0105 earth and related environmental sciences |
| Zdroj: | Progress in Oceanography. 183:102291 |
| ISSN: | 0079-6611 |
| DOI: | 10.1016/j.pocean.2020.102291 |
| Popis: | We investigated the transformation processes of aerosol Fe in the surface water of the Northwestern Pacific Oceanic region by comprehensively collecting and measuring aerosols, seawater, size-fractionated suspended particles, and sinking particles during seasonally representative low and high aerosol deposition months. With one order of magnitude higher aerosol Fe contributed to the surface ocean in the spring month, the elevated deposition of aerosols was not reflected in the dissolved pool but the suspended pool. Elemental ratios further indicate that biotic and abiotic suspended particulate Fe exhibited size-dependent distribution patterns. Lithogenic particles originating from aerosol deposition were mainly in particle fraction with sizes ranging from 2 to 25 µm in the surface water. Biotic particles smaller than 2 µm were the major carriers of intracellular and surface precipitated/aggregated Fe. Due to the relatively small size and low density of biotic particles, the surface precipitated/aggregated Fe on small biotic particles shall possess longer residence time and higher bioavailability than the large and dense lithogenic particles in the euphotic zone. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect