Table 2. Annual Average Global Budgets of 210Pb and 7Be in the GEOS-5 Troposphere for 2013
                               210Pb         7Be
  Burden, g                   281.906      4.15303
  Residence time, days        8.76224      31.7653
  Sources, g d-1        
    from stratosphere        0.244503    0.0516775
    within troposphere        31.9528     0.132914
  Sinks, g d-1          
    dry deposition            4.07200    0.0102576
    wet deposition            28.1015     0.120259
      stratiform              19.4702    0.0974579
      convective              8.63134    0.0228011
    radioactive decay       0.0237767    0.0540753