Table 2. Annual Average Global Budgets of 210Pb and 7Be in the GEOS-5 Troposphere for 2013
                               210Pb         7Be
  Burden, g                   203.961      3.12528
  Residence time, days        5.80721      20.5142
  Sources, g d-1        
    from stratosphere         2.95064    0.0593677
    within troposphere        32.1880     0.133202
  Sinks, g d-1          
    dry deposition            5.49839    0.0121304
    wet deposition            29.6230     0.139758
      stratiform              22.4542     0.124494
      convective              7.16881    0.0152637
    radioactive decay       0.0171695    0.0406817