Table 2. Annual Average Global Budgets of 210Pb and 7Be in the GEOS-5 Troposphere for 2013
                               210Pb         7Be
  Burden, g                   209.734      3.27734
  Residence time, days        5.96728      21.9951
  Sources, g d-1        
    from stratosphere         2.98592    0.0584269
    within troposphere        32.1787     0.132842
  Sinks, g d-1          
    dry deposition            5.59233    0.0117144
    wet deposition            29.5546     0.136894
      stratiform              22.9406     0.123985
      convective              6.61406    0.0129087
    radioactive decay       0.0176544    0.0426604