Como Creek Colorado C-Q data

<p>R code for downloading and analyzing concentration-discharge (C-Q) data from National Ecological Observatory Network (NEON) Como Creek site in Colorado.&nbsp; The script first downloads the data from the NEON API, removes quality flagged measurements, and averages all data to 15 minute intervals and merges discharge (Q), nitrate (NO3-N) and water quality (specific conductance-SpC and fluorescent dissolved organic matter-fDOM which is then used to estimate dissolved organic carbon-DOC).&nbsp; This dats is saved as a csv file, which is also included in this repo, so that this step can be bypassed.</p> <p>The code then analyzes the C-Q relationships of individual snowmelt and rainfall induced pulses by fitting a power function to determine whether concentrations are enriched, diluted or chemostatic.&nbsp; A normalized hysteresis index is also calculated for each event.&nbsp; Finally, the code fits a sine model to each day of data to determine the timing and amplitude of the diel signals.&nbsp;&nbsp;&nbsp;&nbsp;</p>