Contributions of denitrification and mixing on the distribution of nitrous oxide in the North Pacific

Mathematics – Logic

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

6

Oceanography: Biological And Chemical: Stable Isotopes (0454, 1041), Oceanography: Biological And Chemical: Gases, Oceanography: Biological And Chemical: Biogeochemical Cycles, Processes, And Modeling (0412, 0414, 0793, 1615, 4912), Oceanography: Biological And Chemical: Oxidation/Reduction Reactions (0471), Oceanography: Biological And Chemical: Nutrients And Nutrient Cycling (0470, 1050)

Scientific paper

We analyzed N2O isotopomer ratios (distribution of isotopes within N2O molecules) in the eastern tropical North Pacific. The N2O isotopomer ratios indicate the contribution of denitrification in the oxygen minimum zone (OMZ, ~600 m in depth) in the western North Pacific, which is not consistent with the widely accepted nitrification hypothesis. Our models indicate that the N2O yield per mole O2 consumed (dN2O/-dO2) is 0.008 (0-0.015) nmol/μmol during remineralization and nitrification in the western North Pacific. Nitrification in aerobic deep waters is a minor source of oceanic N2O, whereas the N2O production in the OMZ is the dominant factor for the oceanic N2O distribution. The denitrification in the OMZ is consistent with the correlation between ΔN2O (level above atmospheric equilibrium) and AOU (apparent oxygen utilization), and the parallel 18O-enrichment of N2O and O2 in the OMZ, which have been believed to support the nitrification hypothesis.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Contributions of denitrification and mixing on the distribution of nitrous oxide in the North Pacific does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Contributions of denitrification and mixing on the distribution of nitrous oxide in the North Pacific, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contributions of denitrification and mixing on the distribution of nitrous oxide in the North Pacific will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1359727

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.