The Atmospheric Chemistry Experiment (ACE) is a satellite mission that has been in orbit since 2003. The primary instrument on ACE is a Fourier transform spectrometer (FTS) that records infrared atmospheric transmittance spectra in the limb geometry using the Sun as a light source. Version 5 of ACE-FTS data processing contains improved volume mixing ratio (VMR) profiles for 46 molecules and 24 isotopologues, including HFC-32 (CHF) and HOCl as new routine data products. VMR trends for each of the 46 molecules are reported for regions of atmospheric interest. Specifically, the longevity of the ACE mission has provided an opportunity to monitor the effectiveness of the Montreal Protocol on Substances that Deplete the Ozone Layer. It is observed that chlorofluorocarbons (CFCs) are declining, hydrochlorofluorocarbons (HCFCs) are no longer increasing, but hydrofluorocarbons (HFCs) are still increasing rapidly. Greenhouse gases such as carbon dioxide are also monitored and comparisons with National Oceanic and Atmospheric Administration (NOAA) and Advanced Global Atmospheric Gases Experiment (AGAGE) measurements are made.

中文翻译：

---

使用第 5 版 ACE-FTS 数据得出的 2004 年至 2023 年大气成分趋势


大气化学实验 (ACE) 是一项自 2003 年起在轨运行的卫星任务。ACE 上的主要仪器是傅里叶变换光谱仪 (FTS)，它使用太阳作为光源记录肢体几何结构中的红外大气透射光谱。 ACE-FTS 数据处理版本 5 包含 46 个分子和 24 个同位素体的改进的体积混合比 (VMR) 配置文件，包括 HFC-32 (CHF) 和 HOCl 作为新的常规数据产品。报告了大气感兴趣区域的 46 种分子中每一种的 VMR 趋势。具体而言，ACE 任务的长期存在为监测《关于消耗臭氧层物质的蒙特利尔议定书》的有效性提供了机会。据观察，氯氟烃（CFC）正在减少，氢氯氟烃（HCFC）不再增加，但氢氟碳化合物（HFC）仍在快速增加。还监测二氧化碳等温室气体，并与国家海洋和大气管理局 (NOAA) 和高级全球大气气体实验 (AGAGE) 的测量结果进行比较。