Comparison of Two PARAFAC Models of Dissolved Organic Matter Fluorescence for a Mid-Atlantic Forested Watershed in the USA

Figure 3

Spatial distributions of each PARAFAC component (a) FH1, (b) FH2, (c) FH3, (d) FH4, (e) FH5, and (f) FH6 over the two-year study period (2008-2009) across watershed compartments. Red lines in the box-plot represent median values and red-filled circles represent mean values connected with broken red lines. Empty circles represent outlier data points.

(a)  FH1 (UV-humic-like)

(b) FH2 (non-humic-like)

(c) FH3 (soil-humic-like)

(d) FH4 (Vis-humic-like)

(e) FH5 (protein-like; tryp.)

(f) FH6 (protein-like; tyro.)