Currently, many cities worldwide are changing current existing and mostly outdated lighting situation systems from inefficient lamps to light emitting diodes (LEDs). Providing the opportunity of energy savings, they can help in preventing influences to the night sky and furthermore issues for human health, wildlife and environment. This work simulates a potential LED conversion for the megacity of Mexico City and investigates impacts to conservation areas. Modelled for the whole visible spectrum, the analysis places special focus on the effects of applying various colour temperatures. Additionally, a highly polluted atmosphere was included as theoretical model, something applying to megacities in particular, to see impacts on skyglow of such an environmental contingency. In general, results show that the night sky brightness increases significantly with increasing colour temperature of LEDs if the lumen output is kept constant. It is shown that a potential conversion requires a thorough adjustment, otherwise negative impacts on environment and health might rise. Furthermore, an increased aerosol optical thickness ends in producing more diffuse light, identifying a major concern for the environment. The results obtained in this paper may be a strong motivation to ascertain measurements conducted in other large urban areas correlated to the computational results presented here.

当前，全球许多城市正在将当前现有的，且大多已过时的照明情况系统从低效灯更改为发光二极管（LED）。它们提供了节能的机会，可以帮助防止对夜空的影响以及对人类健康，野生动植物和环境的影响。这项工作模拟了墨西哥城特大城市的潜在LED转换，并调查了对保护区的影响。针对整个可见光谱建模，分析特别关注施加各种色温的效果。此外，还包括一个高度污染的大气层作为理论模型，尤其适用于特大城市，以观察这种环境突发事件对高空作业的影响。一般来说，结果表明，如果流明输出保持恒定，则夜空亮度会随着LED色温的升高而显着增加。结果表明，潜在的转换需要进行彻底的调整，否则可能会增加对环境和健康的负面影响。此外，增加的气溶胶光学厚度最终导致产生更多的散射光，这是对环境的主要关注。本文获得的结果可能是确定在与此处给出的计算结果相关的其他大城市地区进行的测量的强大动力。气溶胶光学厚度的增加最终会产生更多的散射光，这是对环境的主要关注。本文获得的结果可能是确定在与此处给出的计算结果相关的其他大城市地区进行的测量的强大动力。气溶胶光学厚度的增加最终会产生更多的散射光，这是对环境的主要关注。本文获得的结果可能是确定在与此处给出的计算结果相关的其他大城市地区进行的测量的强大动力。