CityScan - a revolution in air quality monitoring.

城市扫描-空气质量监测的革命。空气质量差已被证明与健康状况不佳和预期寿命缩短有关。英国的每个市议会都有义务测量空气质量并向国家政府报告。而英国政府则被要求达到欧盟指令设定的目标。除了对某些工业和商业环境的排放监测以及科学研究所需的测量的要求外，世界各地都有类似的要求。城市扫描利用散射的阳光来测量某些空气污染物在城市中心和其他感兴趣地区的浓度和分布。仅使用两个地面站，就可以在100平方公里的区域内测量二氧化氮等气体的分布。这提供了有关主要排放源的信息，以及这些气体随后在周围地区的分布情况。这是地方议会的关键信息，地方议会需要监测城市环境中的排放并管理空气质量，以造福居民和工人。用于检索所有这些信息的技术正在莱斯特大学空间研究中心开发中。卫星仪器所使用的技术正被部署在屋顶上，为市议会、科学家和当地居民提供前所未有的空气质量信息。

CityScan - a revolution in air quality monitoring. Poor air quality has a number of proven links with poor health and shortened life-expectancy. Each city council within the United Kingdom has an obligation to measure and report on air quality to national government. The UK government in turn is required to meet targets set out in European Union directives. Similar requirements exist throughout the world, in addition to requirements for emission monitoring in certain industrial and commercial environments as well as measurements needed for scientific research. CityScan uses scattered sunlight to measure the concentration and distribution of certain air pollutants over city centres and other areas of interest. Using just two ground stations, the distribution of gases such as nitrogen dioxide can be measured over areas up to 100 square kilometers. This provides information on major emission sources, and the subsequent distribution of these gases over surrounding areas. This is key information for local councils who are required to monitor emissions within urban environments and manage air quality for the benefit of residents and workers. The technology used to retrieve all this information is under development at the University of Leicester's space research centre. Techniques used in satellite instruments are being deployed on roof-tops to provide an unprecidented level of information on air quality for the benefit of city councils, scientists and local residents.