Table 2. Annual Average Global Budgets of 210Pb and 7Be in the GEOS-5 Troposphere for 2013
                               210Pb         7Be
  Burden, g                   199.426      3.12435
  Residence time, days        6.20202      21.2728
  Sources, g d-1        
    from stratosphere        0.237400    0.0538848
    within troposphere        31.9437     0.133202
  Sinks, g d-1          
    dry deposition            3.26365   0.00650753
    wet deposition            28.9007     0.139910
      stratiform              21.7525     0.124784
      convective              7.14814    0.0151255
    radioactive decay       0.0167875    0.0406699