大气是各种可能影响水源的物质的载体 质量这些材料可分为两类:人为影响和 自然发生的影响。人为影响可能包括作为一种物质释放的化学品 工业和农业的结果，放射性沉降物，甚至使用各种 战警。自然危害包括病原微生物、有毒金属和 营养物。 这些空气传播的物质，无论其来源如何，都可能影响源水 在短距离或长距离的大气传输中。 短程大气输入是 这里的任意定义是指那些距离源头不到10公里的人。长的 远程大气威胁，被风、风暴系统或 气溶胶化土壤粉尘。本文主要介绍作者在非洲沙漠沙尘方面的工作，这是一个很好的例子 具有长期影响的被风吹污染土壤类型。包括20篇参考文献。

The atmosphere is a vector for a variety of materials that may impact source water quality. These materials can be divided into two groups: man-made impacts and naturally-occurring impacts. Man-made impacts can include chemicals released as a result of industry and agriculture, radioactive fallout, and even the use of a variety of warfare agents. Natural hazards can include pathogenic microbes, toxic metals, and nutrients. These airborne materials, regardless of their origin, may impact source waters during short or long range atmospheric transport. Short range atmospheric inputs are arbitrarily defined here as those traveling less than 10 kilometers from their source. Long range atmospheric threats, are transported much further by winds, storm systems, or aerosolized soil dust. This paper focuses on the authors' work on African desert dust, which is a type of windblown contaminated soil that has long range effects. Includes 20 references.