(O)VOC concentration and flux measurements above a mixed forest at the Vielsalm ICOS ecosystem station (Belgium)

This dataset contains half-hourly averaged volatile organic compound concentrations and fluxes obtained above the canopy of a mixed forest from a flux tower at 52 m a.g.l. at the Vielsalm ICOS ecosystem site in Belgium, from July to October 2009 and from March to October 2010. The concentration data were obtained with a hs-PTR-Quad-MS instrument (Ionicon Analytik GmbH, Austria) and micrometeorological flux data were obtained with the disjunct eddy covariance by mass scanning method. Methodological aspects and data analysis have been described in Laffineur Q. et al., “Isoprene and monoterpene emissions from a mixed temperate forest”, https://doi.org/10.1016/j.atmosenv.2011.02.054, 2011, Laffineur, Q. et al., “Abiotic and biotic control of methanol exchanges in a temperate mixed forest”, https://doi.org/10.5194/acp-12-577-2012, 2012, and Laffineur Q. et al., “Impact of diffuse light on isoprene and monoterpene emissions from a mixed temperate forest”, https://doi.org/10.1016/j.atmosenv.2013.04.025, 2013. The dataset is provided as a two csv files (one per year) with sizes of 2.514 KB (2009) and 4.486 KB (2010) and a complete list of all variables is given in the accompanying pdf file "Dataset_Vielsalm_2009_2010_variables". All ancillary data measured at the site are publicly available and can be obtained from [ICOS Fluxnet Archive Product, Vielsalm](https://meta.icos-cp.eu/objects/roUnkgssFKhxi3o9zcIP00Cw). Detailed site description and characterization can be found on [ICOS Vielsalm station](https://meta.icos-cp.eu/resources/stations/ES_BE-Vie).本数据集包含2009年7月至10月、2010年3月至10月期间，比利时Vielsalm ICOS生态系统站点内，布设于距地面52米（a.g.l.）高度的通量塔所获取的混合林冠层上方半小时平均挥发性有机化合物（volatile organic compound, VOC）浓度与通量数据。其中，浓度数据采用hs-PTR-Quad-MS仪器（奥地利Ionicon Analytik GmbH公司生产）获取，微气象通量数据则通过质量扫描分离式涡动协方差方法获得。相关方法学细节与数据分析流程已在以下文献中详细阐明：Laffineur Q. 等，2011年《温带混合森林的异戊二烯与单萜排放》，https://doi.org/10.1016/j.atmosenv.2011.02.054；Laffineur Q. 等，2012年《温带混合森林中甲醇交换的非生物与生物调控》，https://doi.org/10.5194/acp-12-577-2012；以及Laffineur Q. 等，2013年《漫射光对温带混合森林异戊二烯与单萜排放的影响》，https://doi.org/10.1016/j.atmosenv.2013.04.025。本数据集以两个CSV文件（按年份区分，分别对应2009年与2010年）形式提供，文件大小分别为2.514 KB与4.486 KB；所有变量的完整清单详见配套PDF文档《Dataset_Vielsalm_2009_2010_variables》。本站点测量的全部辅助数据均已公开，可通过[ICOS Fluxnet存档产品，Vielsalm](https://meta.icos-cp.eu/objects/roUnkgssFKhxi3o9zcIP00Cw)获取；站点的详细描述与特征信息可查阅[ICOS Vielsalm站](https://meta.icos-cp.eu/resources/stations/ES_BE-Vie)。