Modern N cycle

 

​   Work in progress....

 

Recent Publications:

​​

• Wald, T., Fripiat, F., Foreman, A. D., Ryu, Y., Marconi, D., Tanhua, T., Sisma-Ventura, G., Sigman, D. M., Haug, G. H., & Martínez-García, A. (2025). Origins of the Nitrate 15N Depletion in the Mediterranean Sea. Global Biogeochemical Cycles, 39(6), e2023GB008035. https://doi.org/https://doi.org/10.1029/2023GB008035

• Marconi, D., Sigman, D. M., Casciotti, K. L., Lawrence, R. M., Wang, W., Oleynik, S., & Martínez-García, A. (2025). Distinguishing the Isotopic Signals of Nitrate Assimilation and Denitrification Along the GEOTRACES GP15 Pacific Meridional Transect. Journal of Geophysical Research: Oceans, 130(6), e2024JC022084. https://doi.org/10.1029/2024jc022084

• Muller, S., Fripiat, F., Jaccard, S. L., Ponsoni, L., Hölemann, J. A., Martínez-García, A., & Delille, B. (2024). Nitrous oxide dynamics in the Kara Sea, Arctic Ocean [Original Research]. Frontiers in Marine Science, 11. https://doi.org/10.3389/fmars.2024.1497360.

• ​Fripiat, F., Sigman, D. M., Martínez-García, A., Marconi, D., Ai, X. E., Auderset, A., Fawcett, S. E., Moretti, S., Studer, A. S., & Haug, G. H. (2023). The Impact of Incomplete Nutrient Consumption in the Southern Ocean on Global Mean Ocean Nitrate δ15N. Global Biogeochemical Cycles, 37(2), e2022GB007442. https://doi.org/10.1029/2022GB007442.

• Fripiat, F., A. Martínez-García, D. Marconi, S. E. Fawcett, S. H. Kopf, V. H. Luu, P. A. Rafter, R. Zhang, D. M. Sigman, and G. H. Haug (2021), Nitrogen isotopic constraints on nutrient transport to the upper ocean, Nature Geoscience, doi: 10.1038/s41561-021-00836-8.

• ​Fripiat, F., A. Martínez-García, S. E. Fawcett, P. C. Kemeny, A. S. Studer, S. M. Smart, F. Rubach, S. Oleynik, D. M. Sigman, and G. H. Haug (2019), The isotope effect of nitrate assimilation in the Antarctic Zone: Improved estimates and paleoceanographic implications, Geochimica Et Cosmochimica Acta, 247, 261-279, doi: 10.1016/j.gca.2018.12.003