Iron solubility in crustal and anthropogenic aerosols: The Eastern Mediterranean as a case study

Date

2011-09-20

Author

Seguret, M. J. M.
Koçak, Mustafa
Theodosi, C.
Ussher, S. J.
Worsfold, P. J.
Herut, B.
Mihalopoulos, N.
Kubilay, N.
Nimmo, M.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

164
views

0
downloads

We report seawater dissolution experiments for aerosol samples simultaneously collected (October 2007) across the Levantine Basin (LB, Eastern Mediterranean Sea), a marine system influenced by seasonal atmospheric inputs. Two distinct populations exhibited contrasting kinetic profiles; those representative of strong Saharan dust events which had variable iron release profiles with a maximum solubility of 0.94 +/- 1.48% (1 s.d.) whereas those which had a relatively greater anthropogenic influence had consistent profiles (fast release, <= 2 h, of dissolved iron in seawater followed by removal) with a maximum solubility of 11.5 +/- 9.3% (1 s.d.). First estimates of atmospheric fluxes of soluble iron are presented, ranging from 8.64 +/- 10.76 mg m(-2) y(-1) for the Northern LB to 6.48 +/- 7.78 mg m(-2) y(-1) for the Southern LB. Estimates of Fe fluxes to oceanic basins are important for constraining the global iron budget, and dust dissolution kinetic profiles provide information on the mechanisms involved during the release of aerosol Fe in seawater post atmospheric deposition. Published by Elsevier B.V.

Subject Keywords

Aerosol Iron, Dissolution, Kinetic, FI-CL, Levantine Basin

URI

https://hdl.handle.net/11511/32483

Journal

MARINE CHEMISTRY

DOI

https://doi.org/10.1016/j.marchem.2011.05.007

Collections

Graduate School of Marine Sciences, Article

Suggestions

OpenMETU
Core

Spatio-temporal aerosol trace metal concentrations and sources in the Levantine Basin of the Eastern Mediterranean Koçak, Mustafa; Kubilay, N; Herut, B (2004-05-01) The current study considers the spatial and temporal variability in aerosol trace metal concentrations (Al, Fe, Mn, Cr, Cu, Pb, Cd, Zn) in the Levantine Basin of the Eastern Mediterranean, utilising an extensive sample library (n = 621) collected between 1999 and 2001, at two coastal sites located at the northern, Erdemli (Turkey) and southeastern, Tel Shikmona (TS, Israel), region of the Basin. A critical evaluation of the datasets from the two locations was presented. Enhanced concentrations of Al (1.7 x)...
Chemical composition of Eastern Black Sea aerosol-Preliminary results BALCILAR, İLKER; Zararsız, Abdullah; Kalaycı, Yusuf; DOĞAN, GÜRAY; Tuncel, Süleyman Gürdal (2014-08-01) Trace element composition of atmospheric particles collected at a high altitude site on the Eastern Black Sea coast of Turkey was investigated to understand atmospheric transport of pollutants to this semi-closed basin. Aerosol samples were collected at a timber-storage area, which is operated by the General Directorate of Forestry. The site is situated at a rural area and is approximately 50 km to the Black Sea coast and 200 km to the Georgia border of Turkey. Coarse (PM2.5-10) and fine (PM2.5) aerosol sam...
Atmospheric trace element and major ion concentrations over the eastern Mediterranean Sea: Identification of anthropogenic source regions GÜLLÜ, GÜLEN; DOĞAN, GÜRAY; Tuncel, Süleyman Gürdal (2005-11-01) Concentrations of elements and ions measured in aerosol samples collected from March 1992 to the end of December 1993 were investigated to identify source regions affecting chemical composition of aerosols in the eastern Mediterranean atmosphere. Collected samples were analyzed for approximately 40 elements and ions using a combination of atomic absorption spectrometry, instrumental neutron activation analysis, ion chromatography and colorimetry. Statistical techniques, such as enrichment factors and a non-...
Ground-based assessment of Total Ozone Mapping Spectrometer (TOMS) data for dust transport over the northeastern Mediterranean Kubilay, N; Oguz, T; Koçak, Mustafa; Torres, O (2005-03-16) [ 1] Multiyear daily surface aerosol aluminum ( Al) concentration and sunphotometer measurements at Erdemli ( Turkey) sampling station were used to assess the performance of Absorbing Aerosol Index ( AAI) and Aerosol Optical Thickness ( AOT) retrieved from the daily Total Ozone Mapping Spectrometer ( TOMS) over the northeastern Mediterranean. A total of 98 moderate- to- high intensity dust events with durations from 1 day to 1 week were identified by aerosol Al concentrations and/ or TOMS- AAI above their t...
Short term temporal & spatial fluctuations in marine cyanobacterium synechococcus abundance in oligotrophic deep shelf waters (northeastern Mediterranean) Uysal, Zahit (2017-01-01) © by PSP.Abundance of picoplanktonic marine cyano-bacterium Synechococcus was monitored weekly over a year period at an oligotrophic deep shelf station in the northeastern Levantine basin (northeastern Mediterranean). In addition to abundance, ambient parameters such as; temperature, salinity, secchi disc depth, total suspended sediment, ni-trate+nitrite, phosphate, chlorophyll and phyto-plankton were also collected. Population was found most abundant during March & December (1.8 × 104 cells/ml) and June & ...

Citation Formats

M. J. M. Seguret et al., “Iron solubility in crustal and anthropogenic aerosols: The Eastern Mediterranean as a case study,” MARINE CHEMISTRY, pp. 229–238, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32483.