Figure 9. Scatter plot of TEMP (DEF-WS, ) against the\(F_{\text{satmx}}\), maximum saturated fraction in grid cell, from
three-year summer monthly data.
Compared to the uniform cooling effect on temperature, the feedback of
wetlands to regional precipitation is more ambiguous. Figure 10 shows
the monthly precipitation from observation, model biases from two
simulations and their difference in three-year summers. The
precipitation bias corresponds well with the temperature bias in Figure
7, with a significant dry bias in the southeast part of the domain while
the precipitation is not as obvious in the Canadian Prairies. The WS
simulations show little difference in precipitation from the DEF
simulation and the signals of changes are almost random. This patchy
precipitation signal is shown in all three-year simulations and for the
accumulated period of four months.