CLARS-FTS Spectralon XGHGs (2011-2023)

This dataset contains the column-averaged dry air mole fractions of carbon dioxide (XCO2), methane (XCH4), and carbon monoxide (XCO) retrieved from the California Laboratory for Atmospheric Remote Sensing Fourier Transform Spectrometer (CLARS-FTS). The measurements were collected in Spectralon viewing mode (pointing at a Spectralon diffusing plate to observe the direct solar spectrum) from the Mount Wilson Observatory, California. The data spans from August 2011 to July 2023 and was used to characterize the instrument's long-term stability and calibrate greenhouse gas retrievals for the Los Angeles Basin.本数据集包含从加利福尼亚州大气遥感实验室傅里叶变换光谱仪（California Laboratory for Atmospheric Remote Sensing Fourier Transform Spectrometer，CLARS-FTS）反演得到的二氧化碳柱平均干空气摩尔分数（XCO2）、甲烷柱平均干空气摩尔分数（XCH4）以及一氧化碳柱平均干空气摩尔分数（XCO）。观测数据采集于加利福尼亚州威尔逊山天文台的Spectralon观测模式下，即指向Spectralon漫反射板以观测直接太阳光谱。该数据集的时间跨度为2011年8月至2023年7月，曾被用于表征该仪器的长期稳定性，并为洛杉矶盆地的温室气体反演工作提供校准支撑。