GTCP: The Use of Cosmogenic 35S and 7BE in Determing Depositional Fluxes of SO2

利用气溶胶中宇宙成因的35 S和7 Be的测量， 降水收集和气体（35 SO2），PI计划 1在每月的时间尺度上确定35 S的下列特性 作为时间的函数：（1）35 SO2氧化速率，（2） 湿沉降中来自云中的35 SO 4分数 氧化，（3）35 SO 4气溶胶的平均停留时间和（4） 35 SO2的“干”沉积通量。 两者的浓度 测量的各种成分中的核素和湿的 降水通量（结合有效 生产率）提供了一个完整的分析的命运35 SO2 在大气中）。 PI打算在一个 以确定参数的季节性变化 控制35 SO2从大气中的去除。 法律与正义党 希望表明35 S和稳定S在 边界 在这种情况下， 由~（35）S得到的两种方法直接适用于一般的气态SO_2 以及对大气SO2系统的完整评估， 得到了区域和季节的函数。

Using measurements of cosmogenic 35S and 7Be in aerosols and precipitation collections and gas (35SO2), the PIs plan to 1determine, on a monthly timescale, the following properties of 35S as a function of time: (1) the rate of 35SO2 oxidation, (2) the fraction of 35SO4 in wet deposition originating from in-cloud oxidation, (3) the mean residence time of 35SO4 aerosol and (4) the "dry" deposition flux of 35SO2. The concentrations of the two nuclides in the various components measured and the wet precipitation fluxes of each (combined with the effective production ratio) provides a complete analysis of the fate of 35SO2 in the atmosphere). The PIs intend to make measurements on a monthly basis to define the seasonal variations in the parameters controlling the removal of 35SO2 from the atmosphere. The PIs desire to show that 35S and stable S are homogenized in the boundary layer box on a monthly timescale, in which case the results obtained from 35S are directly applicable to ordinary gaseous SO2 and a complete evaluation of the atmospheric SO2 system as a function of locale and season will be obtained.