Table 1. Annual Average Global Budgets of 210Pb, 7Be, and 10Be
         in the Troposphere + Stratosphere for 2020

                                210Pb          7Be         10Be
                          -----------  -----------  -----------
  Burden, g                  225.0938      20.1018     262.8018

  Sources, g d-1              28.7315       0.4032       0.5760

  Sinks, g d-1                28.8695       0.4027       0.6072
    Dry deposition             3.9390       0.0091       0.0396
    Wet deposition
      Stratiform              17.9594       0.1092       0.4684
      Convective               6.9522       0.0229       0.0992
    Radioactive decay       0.0189305    0.2615423   0.00000031

  Sources - Sinks, g d-1    -0.138026     0.000461    -0.031192

  Accumulation Term
    Initial mass, g          231.7756      20.1245     263.3506
    Final mass, g            230.7591      20.1495     262.4274
    Difference, g          -1.0164948    0.0249901   -0.9231873