NCL
                     f.e13.F2000     f.e13.F2000      difference     rel diff(%)
Sources (Tg/yr)         5859.619        5837.369          22.250           0.380
        emission        5859.619        5837.369          22.250           0.380
Sinks (Tg/yr)           5855.837        5830.825          25.013           0.427
         dry_dep        1758.572        1785.840         -27.268          -1.551
         wet_dep        4097.265        4044.985          52.280           1.276
Lifetime (days)            1.129           1.133          -0.005          -0.416
Burden (Tg)               18.107          18.105           0.002           0.013
    accumulation           0.889           0.885           0.004           0.467
          Aitken           0.002           0.002          -0.000          -1.530
          coarse          17.216          17.217          -0.002          -0.010