论文标题
部分可观测时空混沌系统的无模型预测
Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers
论文作者
论文摘要
低地球轨道辐射仪可以监测地球广泛区域的夜间人为光。在这项工作中，我们描述了一个简单的模型，用于使用与地面真相信息相互补充的轨衡量标准评估市政当局级别的重大室外照明变化。我们将其应用于评估Ribeira市（42°33 23 N，8°59 32 W）在加利西亚的城市中产生的转化，2015年在2015年将其公开拥有的室外照明系统中安装的腔量从93.2降低至28.7毫升。这种显着的削减在额外的控件的帮助下，可以从0.768降低到0.208 mlm/km2，整个领土上的腔发射密度平均。结合VIIRS-DNB年度复合读数，这些数据可以估计，公共路灯系统的相对重量相对于市政当时的光的总发射的相对重量从最初的价值从74.86％的初始值转变为转换后的44.86％到44.68％。还评估了源光谱移位和光子校准因子对VIIRS-DNB报告的辐射的影响。
Low Earth orbit radiometers allow monitoring nighttime anthropogenic light emissions in wide areas of the planet. In this work we describe a simple model for assessing significant outdoor lighting changes at the municipality level using on-orbit measurements complemented with ground-truth information. We apply it to evaluate the transformation effected in the municipality of Ribeira (42° 33 23 N, 8° 59 32 W) in Galicia, which in 2015 reduced the amount of installed lumen in its publicly-owned outdoor lighting system from 93.2 to 28.7 Mlm. This significant cutback, with the help of additional controls, allowed to reduce from 0.768 to 0.208 Mlm/km2 the lumen emission density averaged across the territory. In combination with the VIIRS-DNB annual composite readings these data allow to estimate that the relative weight of the emissions of the public streetlight system with respect to the total emissions of light in the municipality changed from an initial value of 74.86% to 44.68% after the transformation. The effects of the sources spectral shift and the photon calibration factor on the radiance reported by the VIIRS-DNB are also evaluated.
