After running the NDR model I get total N export and total P export along with total loads for both nutrients. When comparing to observed data (annual loads), which should I be using? I would assume total loads, but my total export numbers are WAY closer to the observed data than my total load numbers.
Hi @audiae -
N/P export represent the amount of nutrient that makes it to the stream. If your observed data is from stream gauges, then you should be using export to compare against the observed data.
Loading represents the amount of nutrient that leaves a pixel on the landscape. This would mainly be comparable if you have observed measurements at, say, a plot level.
Thank you! That helps a lot!