Rainwater Chemistry and Atmospheric Pollutants

Dear Colleagues,

The contradiction between human's requirement for clean air resources and atmospheric pollution due to rapid social-economic development and urbanization has become one of the most vital limiting factors for regional and even global sustainable development. Rainwater (wet deposition) is a primary sink of air pollutants (e.g., soluble gases and particulate matter), which can remove the air pollutants by both in-cloud (dissolution) and below-cloud (scour) processes, and further influenced rainwater chemical compositions and earth-surface ecosystem. Therefore, the rainwater chemical characteristics are also the reflection of air pollution and air quality. Generally, anions, cations, heavy metals, rare earth elements, carbon species are the important components of rainwater chemicals, which mainly originated from anthropogenic origin, terrestrial source, and sea-salt source. In addition, the rainwater chemistry is also influenced by several factors, such as meteorology, geography, and environmental protection policies. In the context of the globalization of environmental change and the high frequency of extreme rainfall events, how to identify the rainwater quality and atmospheric contamination (including pollution levels, sources of pollutants, and influencing factors) is most important to realize high-efficiency atmospheric environmental management and sustainable development. However, the rainwater chemistry and air pollutants study in different environments or ecosystems remain many challenges over the world. Accurate assessment of sources, transformation, and migration of pollutants in rainwater and air is a critical challenge due the different strength influence of anthropogenic and natural processes on various environmental systems. In this Special Issue, we plan to promote the publication of papers dealing rainwater chemistry and air pollution under the different environmental systems, mainly focus on the compositions, evolution, deposition fluxes, risk assessment of rainwater chemicals, the relationship between rainwater chemistry and air pollutants and the related new technologies/models. This Special Issue aim to publish the new/fresh/innovative ideas from different perspectives over the world, in the field of rainwater chemistry and atmospheric pollutants. This topic could be addressed from several different perspectives (Including but not limited):

1) The chemical compositions and evolution of rainwater in different terrestrial environment and ecosystem impacted by both anthropogenic and natural processes.

2) Wet deposition fluxes of typical pollutants (e.g., sulfate, nitrate, ammonia, heavy metals, rare earth elements, organic matter) and their environmental effects (risk assessment).

3) Multi-methods based identification and quantification of sources of rainwater ions and air pollutants.

4) Linkage between the rainwater chemistry and air pollutants, and its controlling factors.

5)  New technologies/models on observation and study of rainwater chemistry and air pollutants.

6) The responses of rainwater chemistry and air pollution to the environmental policy.

7) Source-sink of greenhouse gases in atmosphere and its reaction between water-air interface.

Prof. Dr. Qixin Wu
Dr. Caiqing Qin
Jie Zeng
Guest Editors

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