Bagnell Aaron

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Bagnell
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Aaron
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Compiled dataset consisting of published and unpublished global nitrate d15N measurements from from 1975-2018

2019-06-17 , Rafter, Patrick , Bagnell, Aaron , DeVries, Timothy , Marconi, Dario

Nitrate d15N observations were compiled from studies dating from 1975 to 2018. Whenever possible, the data was acquired via the original author, but in other cases the data was estimated from the publication directly. All observations were treated equally, although the failure to remove nitrite when using the "denitrifier method" may bias the nitrate d15N to low values (Rafter et al., 2013). This version of the dataset (1.0) will be updated as new data are published. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/768627

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Estimated nitrate d15N modeled using an ensemble of artificial neural networks (EANNs)

2019-06-17 , Rafter, Patrick , Bagnell, Aaron , DeVries, Timothy , Marconi, Dario

We utilize an ensemble of artificial neural networks (EANNs) to interpolate our global ocean nitrate d15N database, producing complete 3D maps of the data. By utilizing an artificial neural network (ANN), a machine learning approach that effectively identifies nonlinear relationships between a target variable (the isotopic dataset) and a set of input features (other available ocean datasets), we can fill holes in our data sampling coverage of nitrate d15N. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/768655

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