Organic nitrogen in rain and aerosol in the eastern Mediterranean atmosphere: An association with atmospheric dust

Download
index.pdf
2003-05-31
Mace, KA
Kubilay, N
Duce, RA
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
246
views
0
downloads
From March through early May of 2000, rain and bulk aerosol samples were collected at a coastal site on the eastern Mediterranean Sea at Erdemli, Turkey, and analyzed for nitrogen (N) species, including nitrate (NO3-), nitrite (NO2-), ammonium (NH4+), water-soluble organic N, urea, and dissolved free amino acids. Other ions were also analyzed, including Ca2+, Mg2+, K+, Na+, Cl-, and SO42-. Water-soluble organic N was found to contribute similar to17% and similar to26% of the total water-soluble N in rain and aerosols, respectively. Organic N concentrations within rain and aerosols exhibited statistically significant linear relationships to Ca2+ ion (R(sqr)similar to0.75, P<0.05), suggesting a relationship to calcite (CaCO3) in atmospheric dust. Kinematic trajectory analyses indicated the origin of winds from arid regions, mainly in northern Africa, in 70% of the aerosols sampled. Earth Probe/Total Ozone Mapping Spectrometer aerosol index data also confirmed the influence of atmospheric dust in the region on days when Ca2+ concentrations were elevated, and trajectory analyses suggested northern Africa as a source region. The combined ion, trajectory, and aerosol index data suggest that organic N is associated with atmospheric dust in this region. Urea N and amino N represented a small percentage of the organic N fraction. In rain and aerosols, urea represented similar to 11% and <1%, respectively, of the total organic N. While amino N contributed minimally to organic N totals (similar to1% of total organic N in aerosols), the individual amino acids contributing similar to75% of amino N were indicative of biological organisms. Further research is needed to decipher the influence from biology and gas phase adsorption of anthropogenically derived water-soluble organics on organic N totals.
Atmospheric dust, Organic nitrogen, Nitrogen cycling, Mediterranean Sea, Sahara
https://hdl.handle.net/11511/67124
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
Graduate School of Marine Sciences, Article

Suggestions

Nitrogen cycling in the offshore waters of the Black Sea
McCarthy, James J.; Yılmaz, Aysun; Coban-Yildiz, Yesim; Nevins, John L. (2007-09-01)
The purpose of this study was to measure directly the rates of several of the processes responsible for the production and utilization of nitrogenous nutrients, and to use these rates and other data to generate an annual nitrogen budget for the Black Sea. Water column samples and experimentation with (15)N labeled nutrients in the offshore waters of the Black Sea reveal strong seasonal cycles in the utilization of different forms of N, the regeneration of NH(4)(+) and the production of NO(2)(-) in and below...
Atmospheric deposition of inorganic phosphorus in the Levantine Basin, eastern Mediterranean: Spatial and temporal variability and its role in seawater productivity
Markaki, Z; Oikonomou, K; Koçak, Mustafa; Kouvarakis, G; Chaniotaki, A; Kubilay, N; Mihalopoulos, N (2003-07-01)
Total and dissolved inorganic phosphorus (IP) was measured in both rainwater and aerosol samples collected from two remote coastal areas: on the island of Crete (Greece) and at Erdemli (Turkey). Particle size distributions of P, as well as total deposition were also measured. Wet and dry deposition of dissolved inorganic phosphorus (DIP) from Crete are compared with simultaneously obtained dissolved inorganic nitrogen (DIN) and with productivity data from the literature. Our results indicate that (1) in bot...
Polycyclic aromatic hydrocarbons (PAHs) in sea sediments of the Turkish Mediterranean coast, composition and sources
Tuncel, Süleyman Gürdal (2015-03-01)
The concentrations of polycyclic aromatic hydrocarbons (PAHs) were determined in 25 surface sediment samples from five sites located at Oludeniz Lagoon of the Turkish Mediterranean coast. The total concentration of the PAHs (1.85 +/- 1.39 mg/kg) was lower than the sediments from highly urbanized areas, while it was comparable with the sediments from similar locations. Acenaphthene and chrysene were dominant ones with the concentrations of 0.620 and 0.515 mg/kg, respectively. The isomeric ratios indicated th...
Grain size distributions in airborne dust, river-suspended loads, and marine sediments from southeastern Turkey (NE Mediterranean Sea)
Ediger, Vedat (2020-01-01)
Between February 2001 and January 2002, near the coast of Erdemli, southeastern Turkey, 7 airborne dust samples, 7 coastal river-suspended sediment samples, and 3 marine sediment cores were collected. The main objective of this study was to understand the interrelationships among the multisources, multitransportation paths, and changing depositional conditions around the continental shelf of the Lamas River delta. In addition to a detailed study of satellite photos to track atmospheric dust in the region, g...
Atmospheric nutrient inputs to the northern levantine basin from a long-term observation: sources and comparison with riverine inputs
Koçak, Mustafa; TUĞRUL, SÜLEYMAN; Mihalopoulos, N (2010-01-01)
Aerosol and rainwater samples have been collected at a rural site located on the coastline of the Eastern Mediterranean, Erdemli, Turkey between January 1999 and December 2007. Riverine sampling was carried out at five Rivers (Ceyhan, Seyhan, Goksu, Berdan and Lamas) draining into the Northeastern Levantine Basin (NLB) between March 2002 and July 2007. Samples have been analyzed for macronutrients of phosphate, silicate, nitrate and ammonium (PO43-, Sidiss, NO3- and NH4+). Phosphate and silicate in aerosol ...
Citation Formats
K. Mace, N. Kubilay, and R. Duce, “Organic nitrogen in rain and aerosol in the eastern Mediterranean atmosphere: An association with atmospheric dust,” JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, pp. 0–0, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67124.
METU IIS - Integrated Information Service open@metu.edu.tr