Final technical report DOE award DE-SC0007206 Improving CESM Efficiency to Study Variable C:N:P Stoichiometry in the Oceans

Primeau, Francois William¹ 

[1]Univ. of California, Irvine, CA (United States)

关键词: ocean biogeochemistry;    earth system modeling;    fast numerical methods for simulating advection-diffusion;    C:N:P stoichiometry of marine biological production;   

DOI  :  10.2172/1237799
RP-ID  :  DOE-UCI--SC00007206
PID  :  OSTI ID: 1237799

美国|英语

来源: SciTech Connect

【 摘 要 】

This report lists the accomplishments of the project, which includes: (1) analysis of inorganic nutrient concentration data as well as suspended particulate organic matter data in the ocean to demonstrate that the carbon to nitrogen to phosphorus ratios (C:N:P) of biological uptake and export vary on large spatial scales, (2) the development of a new computationally efficient method for simulating biogeochemical tracers in earth system models, (3) the application of the method to help calibrate an improved representation of dissolved organic matter in the ocean that includes variable C:N:P stoichiometry. This research is important because biological uptake of carbon and nutrients in the upper ocean and export by sinking particles and downward mixing of dissolved organic matter helps maintain a vertical gradient in the carbon dioxide concentration in the ocean. This gradient is key to understanding the partitioning of CO2 between the ocean and the atmosphere. The final report lists seven peer reviewed scientific publications, one Ph.D. thesis, one technical report and two papers in preparation.