Table 2. Annual Average Global Budgets of 210Pb and 7Be in the GEOS-5 Troposphere for 2013
                               210Pb         7Be
  Burden, g                   210.371      3.32564
  Residence time, days        6.54296      23.2523
  Sources, g d-1        
    from stratosphere        0.225956    0.0530363
    within troposphere        31.9528     0.132914
  Sinks, g d-1          
    dry deposition            3.41587   0.00664940
    wet deposition            28.7451     0.135989
      stratiform              21.9070     0.122347
      convective              6.83813    0.0136424
    radioactive decay       0.0177696    0.0433123