# Predicted Future Changes in the Mean Seasonal Carbon Cycle Due to Climate Change
## 6 Conclusions
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{5}{c}{**SPE**} \\ \hline  & \multicolumn{5}{c}{RCP 2.6} \\ year & CZ-Bk1 & IT-Col & FI-Hyy & FR-LBr & DK-Sor \\ \hline
2009–2019 & \(\mathbf{-37\%}\) & \(-19\%\) & \(-4\%\) & \(-24\%\) & \(-9\%\) \\
2019–2029 & \(\mathbf{-64\%}\) & \(-35\%\) & \(-16\%\) & \(-44\%\) & \(-14\%\) \\
2029–2039 & \(\mathbf{-70\%}\) & \(-31\%\) & \(-27\%\) & \(-53\%\) & \(-22\%\) \\
2039–2049 & \(\mathbf{-76\%}\) & \(-39\%\) & \(-39\%\) & \(-59\%\) & \(-29\%\) \\
2049–2059 & \(\mathbf{-79\%}\) & \(-48\%\) & \(-47\%\) & \(-58\%\) & \(-33\%\) \\
2059–2069 & \(\mathbf{-79\%}\) & \(-59\%\) & \(-58\%\) & \(-65\%\) & \(-32\%\) \\
2069–2079 & \(\mathbf{-75\%}\) & \(-61\%\) & \(-66\%\) & \(-70\%\) & \(-37\%\) \\
2079–2089 & \(\mathbf{-76\%}\) & \(-69\%\) & \(\mathbf{-76\%}\) & \(-75\%\) & \(-44\%\) \\
2089–2099 & \(\mathbf{-74\%}\) & \(-68\%\) & \(\mathbf{-95\%}\) & \(-72\%\) & \(-43\%\) \\ \hline  & \multicolumn{5}{c}{RCP 6.0} \\ year & CZ-Bk1 & IT-Col & FI-Hyy & FR-LBr & DK-Sor \\ \hline
2009–2019 & \(\mathbf{-35\%}\) & \(-11\%\) & \(0\%\) & \(-25\%\) & \(-11\%\) \\
2019–2029 & \(\mathbf{-60\%}\) & \(-27\%\) & \(-11\%\) & \(-43\%\) & \(-14\%\) \\
2029–2039 & \(\mathbf{-74\%}\) & \(-36\%\) & \(-23\%\) & \(-52\%\) & \(-26\%\) \\
2039–2049 & \(\mathbf{-76\%}\) & \Figure A2: Ten-year average GPP seasonal cycle under the RCP 2.6 climate scenario for 5 case studies selected, i.e., (1) Colellongo--IT-Col, (2) Le Bray--FR-LBr, (3) Hyyitala--FI-Hyy, (4) Blíy Kriz--CZ-Bk1, and (5) Sore--DK-Sor. The histograms (**a**) represent the annual GPP variation (%) from the first decade taken as a benchmark of simulation (1999–2009). The xy plots (**b**) show the Mean Seasonal GPP Cycle of monthly values (gC m\({}^{-2}\) day\({}^{-1}\)). Figure 17: Ten-year average GPP seasonal cycle under the RCP 6.0 climate scenario for 5 case studies selected, i.e., (1) Colellongo--IT-Col, (2) Le Bray--FR-LBr, (3) Hyytiala--FI-Hyy, (4) Bily Kriz--CZ-Bk1, and (5) Sora--DK-Sor. The histograms (**a**) represent the annual GPP variation (%) from the first decade taken as a benchmark of simulation (1999–2009). The xy plots (**b**) show the Mean Seasonal GPP Cycle of monthly values (gC m\({}^{-2}\) day\({}^{-1}\)). Figure 5: Ten-year average \(\rm R_{eco}\) seasonal cycle under the RCP 6.0 climate scenario for 5 case studies selected, i.e., (1) Collelongo—IT-Col, (2) Le Bray—FR-LBr, (3) Hyvitala—FI-Hyy, (4) Billy Kriz—CZ-BK1, and (5) Sore—DK-Sor. The histograms (a) represent the annual \(\rm R_{eco}\) variation (%) from the first decade taken as a benchmark of simulation (1999–2009). The xy plots (**b**) show the Mean Seasonal \(\rm R_{eco}\) Cycle of monthly values (gC m\({}^{-2}\) day\({}^{-1}\)). \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{5}{c}{**Days as C-Source**} \\ \hline  & \multicolumn{5}{c}{RCP 2.6} \\ year & CZ-Bk1 & IT-Col & FI-Hyy & FR-LBr & DK-Sor \\ \hline
1999–2009 & **321** & 144 & **258** & **365** & 153 \\
2009–2019 & 239 & 142 & 230 & 340 & 157 \\
2019–2029 & 189 & 142 & 209 & 283 & **159** \\
2029–2039 & 183 & 148 & 195 & 280 & 149 \\
2039–2049 & 170 & **149** & 194 & 262 & 148 \\
2049–2059 & 176 & 145 & 183 & 263 & 147 \\
2059–2069 & 166 & 145 & 166 & 257 & 149 \\
2069–2079 & 176 & 148 & 164 & 256 & 146 \\
2079–2089 & 171 & 140 & 157 & 236 & 143 \\
2089–2099 & 172 & 146 & 147 & 248 & 137 \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Summary of number of the days in a year (n. days year\({}^{-1}\)) source, considering both climate change scenarios (RCP 2.6 and 6.0) for 5 case studies selected (i.e., Collelongo—IT-Col, Le Bray—FR-LBr, Hyytialà—FI-Hyy, Bilý Kriz—CZ-Bk1, and Soro—DK-Sor). In bold values where changes were the highest between the decades while underlined the lowest ones within each forest stand. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{5}{c}{**DoY to C-Sink**} \\ \hline  & \multicolumn{5}{c}{RCP 2.6} \\ year & CZ-Bk1 & IT-Col & FI-Hyy & FR-LBr & DK-Sor \\ \hline  
\hline \hline \end{tabular}
\end{table}