FN Archimer Export Format PT J TI Atmospheric water-soluble organic nitrogen (WSON) over marine environments: a global perspective BT AF VIOLAKI, K. SCIARE, J. WILLIAMS, J. BAKER, A. R. MARTINO, M. MIHALOPOULOS, N. AS 1:1;2:2;3:3;4:4;5:4;6:1,5; FF 1:;2:;3:;4:;5:;6:; C1 Univ Crete, Dept Chem, Environm Chem Proc Lab, Iraklion 71003, Greece. CEA CNRS UVSQ, LSCE, UMR1572, Gif Sur Yvette, France. Max Planck Inst Chem, Air Chem Dept, D-55128 Mainz, Germany. Univ E Anglia, Sch Environm Sci, Ctr Ocean & Atmospher Sci, Norwich NR4 7TJ, Norfolk, England. Natl Observ Athens, Inst Environm Res & Sustainable Dev, Athens 15236, Greece. C2 UNIV CRETE, GREECE CEA, FRANCE MAX PLANCK INST, GERMANY UNIV E ANGLIA, UK NATL OBSERV ATHENS, GREECE IN DOAJ IF 3.7 TC 24 UR https://archimer.ifremer.fr/doc/00291/40253/38630.pdf https://archimer.ifremer.fr/doc/00291/40253/38632.pdf LA English DT Article CR VT 88 / OOMPH-1 - MD 160 / OOMPH BO Marion Dufresne AB To obtain a comprehensive picture of the spatial distribution of water-soluble organic nitrogen (WSON) in marine aerosols, samples were collected during research cruises in the tropical and southern Atlantic Ocean and also in the southern Indian Ocean (Amsterdam Island) for a 1-year period (2005). Samples were analyzed for both organic and inorganic forms of nitrogen, and the factors controlling their levels were examined. Fine-mode WSON was found to play a significant role in the remote marine atmosphere with enhanced biogenic activity, with concentrations of WSON (11.3 +/- 3.3 nmol N m(-3)) accounting for about 84% of the total dissolved nitrogen (TDN). Such concentrations are similar to those observed in the polluted marine atmosphere of the eastern Mediterranean (11.6 +/- 14.0 nmol N m(-3)). Anthropogenic activities were found to be an important source of atmospheric WSON as evidenced by the levels in the Northern Hemisphere (NH) being 10 times higher than in the remote Southern Hemisphere (SH). Furthermore, the higher contribution of fine-mode WSON to TDN (51 %) in the SH, compared to the NH (13 %), underlines the important role of organic nitrogen in remote marine areas. Finally, there was a strong association of WSON with dust in coarse-mode aerosols in the NH. PY 2015 SO Biogeosciences SN 1726-4170 PU Copernicus Gesellschaft Mbh VL 12 IS 10 UT 000356179300021 BP 3131 EP 3140 DI 10.5194/bg-12-3131-2015 ID 40253 ER EF