Table 2. Annual Average Global Budgets of 210Pb and 7Be in the GEOS-5 Troposphere for 2013
                               210Pb         7Be
  Burden, g                   204.931      3.27720
  Residence time, days        6.37746      22.8066
  Sources, g d-1        
    from stratosphere        0.225323    0.0531204
    within troposphere        31.9356     0.132842
  Sinks, g d-1          
    dry deposition            3.32210   0.00628201
    wet deposition            28.8216     0.137021
      stratiform              22.2060     0.124239
      convective              6.61553    0.0127822
    radioactive decay       0.0172499    0.0426591