Table 1. Annual Average Global Budgets of 210Pb and 7Be in the Troposphere+Stratosphere for 2013
                               210Pb         7Be
  Burden, g                   272.115      20.2556
  Sources, g d-1              32.1967     0.403346
    stratosphere             0.130619     0.270660
    troposphere               32.0661     0.132687
  Sinks, g d-1                32.2896     0.403731
    dry deposition            3.90212    0.0102796
    wet deposition      
      stratiform              19.9166     0.103831
      convective              8.44793    0.0260759
    radioactive decay       0.0228926     0.263545
 
  Accumulation Term     
    Initial mass, g           239.326      20.4552
    Final   mass, g           238.313      20.4548
    Difference, g            -1.01285 -0.000406265