Estimating Annual CO₂ Flux for Lutjewad Station Using Three Different Gap-Filling Techniques

Figure 1

Diurnal variation of the four fluxes for each month, represented as follows: measured flux: red, continuous line; MR filled: black, dash line; ANN filled: green, dotted line; MI filled: blue, dash line. The month is identified by corresponding roman numerals in the right corner of each plot.