Table 1. Annual Average Global Budgets of 210Pb and 7Be in the Troposphere+Stratosphere for 2016 210Pb 7Be Burden, g 265.663 19.9595 Sources, g d-1 32.4594 0.403161 stratosphere 0.124004 0.266858 troposphere 32.3354 0.136303 Sinks, g d-1 32.5550 0.403543 dry deposition 3.30589 0.00864688 wet deposition stratiform 20.6644 0.109245 convective 8.56232 0.0259569 radioactive decay 0.0223507 0.259694 Accumulation Term Initial mass, g 243.423 20.1973 Final mass, g 242.406 20.1989 Difference, g -1.01732 0.00159264