Table 2: RMSE of fitting four copula functions to joint distributions for drought severity and duration under baseline and three A1B scenarios.

ScenariosRMSE
Gumbel-HougaardClaytonFrankAli-Mikhail-Haq

Baseline0.23340.04650.16550.8975
A1B PRECIS0.23680.05360.17460.2117
A1B CSIRO0.23130.06810.16820.1569
A1B MPI0.23090.07030.14251.6671