AN ATMOSPHERIC SULFUR BUDGET FOR EASTERN NORTH-AMERICA
AN ATMOSPHERIC SULFUR BUDGET FOR EASTERN NORTH-AMERICA
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DOI：
10.1016/0004-6981(80)90205-x
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发表时间：
1980-01-01
影响因子：
5
通讯作者：
WHELPDALE, DM
中科院分区：
文献类型：
--
作者：
GALLOWAY, JN;WHELPDALE, DM
美国东部，加拿大东部和北美东部的大气S预算制定，通量的基础上：自然和人为排放，湿和干沉降，大气流入和流出。这些条款中的每一个的不确定性进行检查，并选择一个最佳的估计预算计算。在北美东部，人为排放量超过自然排放量10倍;该区域的湿沉降和干沉降量大致相当;至少1/4的排放量通过大气层向东离开该区域。在该地区的加拿大和美国部分，上述情况发生了重大变化，此外，两国之间的边界上有大量的物资交换。这些初步的预算计算表明，在北美东部，在西欧，人类的活动占主导地位的区域大气S循环。
Atmospheric S budgets for the eastern USA, eastern Canada and eastern North America are formulated, based on the fluxes: natural and man-made emissions, wet and dry deposition, and atmospheric inflows and outflows. The uncertainty in each of these terms is examined, and a best estimate is chosen for the budget calculations. In eastern North America, man-made emissions exceed natural ones by a factor of 10; wet and dry deposition over the region are approximately equivalent; and at least 1/4 of the emissions leaves the region via the atmosphere to the east. Within the Canadian and American portions of the region, significant deviations from the above occur, and in addition, there is a significant exchange of material across the boundary separating the 2 countries. These preliminary budget calculations demonstrate that in eastern North America, as in western Europe, man''s activity dominates the regional atmospheric S cycle.