The Falcon 9 Rockets carried a satellite that will operate NASA's tropospheric emissions, monitoring of pollution instrument or Tempo.

猎鹰九号火箭搭载了颗，将运行NASA的对流污染监测仪器。

VOCs and nitrous oxide react with sunlight to produce secondary pollutants called PANs and tropospheric, or ground level, ozone.

VOC 氧化二氮与阳光发生反应，产生称为 PAN 的二次污染物对流或地面臭氧。