NCL
                     f.e13.F2000     f.e13.F2000      difference     rel diff(%)
Sources (Tg/yr)         5800.590        5751.032          49.558           0.854
        emission        5800.590        5751.032          49.558           0.854
Sinks (Tg/yr)           5799.583        5749.641          49.942           0.861
         dry_dep        1776.980        1767.211           9.769           0.550
         wet_dep        4022.603        3982.430          40.173           0.999
Lifetime (days)            1.135           1.133           0.002           0.183
Burden (Tg)               18.037          17.849           0.188           1.042
    accumulation           0.874           0.867           0.008           0.904
          Aitken           0.002           0.002           0.000           2.013
          coarse          17.160          16.981           0.180           1.047