Annual BorealArctic wetland CH 4 emissions and Wetland Area and Dynamics for Methane Modeling (WAD2M) wetland area dataset between 2002 and 2021. Dashed lines indicate the linear regression results for wetland CH 4 emissions ( P = 0.017, twosided ttest) and wetland area ( P = 0.064). The blue shaded area indicates the s.d. in estimated wetland CH 4 variability due to model parameter uncertainty.
