Discuss possible explanations for discrepancies between ANC and alkalinity. Calculate acid neutralizing capacity (ANC) as the difference between strong base cations and strong acid anions. Discuss non-marine sources of ions like SO 4, Na, and Ca. Activity C: Investigate the sea-salt contribution to inland water composition.Interpret distribution patterns in terms main geographical gradients of sea-salt influence, long-distance air pollution, etc. Activity B: Plot spatial distributions of different ions using the leaflet package.Activity A: Read the data file and do basic familiarization and exploration (what do the different columns represent, what are their summary statistics, what do the distributions look like, which ions are most / least abundant, etc.).The exercise can be broken down into 4 activities all based on the same data set, but with increasing complexity. This document contains hints and critical snippets of code, but the students will have to compose most of the coding by themselves. The students are given a text file with the data and a HTML document (created with Rmarkdown) with instructions for how to proceed with exploring the data set.
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