The ALFAM2 dataset on ammonia loss from field-applied manure

The ALFAM2 database has measurements of ammonia volatilization (emission) from field-applied liquid animal manure (slurry). The dataset consists of two files: one with plot- (<code>ALFAM2_plot.csv</code>) and one with measurement interval-level (<code>ALFAM2_interval.csv</code>) observations. For information on file headers, see the <code>*-level_variables.csv</code> files. The two data files can be merged on two plot keys (identification codes): <code>pid</code> and <code>pmid</code>. See the README.md file at https://github.com/sashahafner/ALFAM2-data, the web page https://projects.au.dk/alfam/ (or alfam.dk), and the reference and related identifiers here on the Zenodo page for more details.