COCCON Version 4 dataset from atmospheric observatory of Tsukuba (Japan) available at the EVDC Data Handling Facilities covering start date Mar 3rd 2016 to end date Aug 12th 2024

COCCON uses the EM27/SUN spectrometer commercially available from Bruker Company. The spectrometer performs solar absorption measurements in the NIR for the measurement of column-averaged abundances of atmospheric greenhouse gases (CO2, CH4, CO, and H2O). COCCON requires the use of calibrated spectrometers and of common data analyses tools (see http://www.imk-asf.kit.edu/english/COCCON.php).

COCCON 采用布鲁克（Bruker）公司商用的 EM27/SUN 型光谱仪。该光谱仪可在近红外（Near Infrared, NIR）波段开展太阳吸收测量，用于测定大气温室气体（二氧化碳(CO₂)、甲烷(CH₄)、一氧化碳(CO)及水汽(H₂O)）的柱平均丰度。COCCON 需搭配经过校准的光谱仪与通用数据分析工具使用，详细信息可参见 http://www.imk-asf.kit.edu/english/COCCON.php。