Nitrous oxide in the surface layer of the tropical North Atlantic Ocean along a west to east transect

Details Nitrous oxide in the surface layer of the tropical North Atlantic Ocean along a west to east transect Nitrous oxide in the surface layer of the tropical North Atlantic Ocean along a west to east transect

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3123s07w&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 23, CiteID L23S07

Mathematics

Logic

7

Oceanography: Biological And Chemical: Gases, Atmospheric Composition And Structure: Air/Sea Constituent Fluxes (3339, 4504), Atmospheric Composition And Structure: Constituent Sources And Sinks

Scientific paper

Nitrous oxide (N2O) was measured during the first German SOLAS (Surface Ocean - Lower Atmosphere Study) cruise in the tropical North Atlantic Ocean on board R/V Meteor during October/November 2002. About 900 atmospheric and dissolved N2O measurements were performed with a semi-continuous GC-ECD system equipped with a seawater-gas equilibrator. Surface waters along the main transect at 10°N showed no distinct longitudinal gradient. Instead, N2O saturations were highly variable ranging from 97% to 118% (in the Guinea Dome Area, 11°N, 24°W). When approaching the continental shelf of West Africa, N2O surface saturations went up to 113%. N2O saturations in the region of the equatorial upwelling (at 0-1.5°N, 23.5-26°W) were correlated with decreasing sea surface temperatures and showed saturations up to 109%. The overall mean N2O saturation was 104 +/- 4% indicating that the tropical North Atlantic Ocean is a net source of atmospheric N2O.

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