NCL
                     f.e13.F2000     f.e13.F2000      difference     rel diff(%)
Sources (Tg/yr)         6041.282        5859.149         182.133           3.015
        emission        6041.282        5859.149         182.133           3.015
Sinks (Tg/yr)           6029.629        5850.314         179.314           2.974
         dry_dep        1817.794        1767.428          50.366           2.771
         wet_dep        4211.835        4082.887         128.948           3.062
Lifetime (days)            1.132           1.122           0.009           0.832
Burden (Tg)               18.697          17.990           0.707           3.782
    accumulation           0.926           0.892           0.033           3.599
          Aitken           0.002           0.002           0.000           4.412
          coarse          17.769          17.096           0.673           3.789