Urban carbon uptake from COS fluxes, Helsinki 2023 Dataset

Dataset Description: Urban Carbon Uptake by Vegetation This dataset contains a collection of measurements relevant to the study of carbon uptake by urban vegetation, and is used by Soininen et al (to be published, embargoed until publishing). The data were acquired in Helsinki, Finland, between 1st May and 31st October 2023. Dataset contents are as follows: Eddy Covariance Data: Continuous measurements of carbon dioxide (CO2), carbon monoxide (CO), and carbonyl sulfide (COS) fluxes at SMEAR III (Station for Measuring Ecosystem-Atmosphere Relations; https://meta.icos-cp.eu/resources/stations/ES_FI-Kmp) Meteorological Measurements: Key parameters such as temperature, humidity, wind speed, wind direction, and photosynthetically active radiation measured at SMEAR III eddy covariance tower and closeby building roof top Soil Measurements: Data on soil temperature and volumetric soil water content, measured in the Kumpula botanic garden premises Leaf Area Index (LAI): Derived from Sentinel-2 satellite imagery, this data provides information on vegetation density used in a parameterization to connect COS flux to photosynthetic CO2 uptake Traffic Data: Information on traffic rate and average speeds observed on the study area used to estimate anthropogenic CO2 emissions Land Use Data: Detailed mapping of land use types, enabling spatial analysis of vegetation distribution数据集描述：城市植被碳吸收 本数据集收录了一系列与城市植被碳吸收研究相关的实测数据，由Soininen等学者用于相关研究，该研究尚未正式发表，出版前处于保密期。数据采集时段为2023年5月1日至10月31日，采集地点为芬兰赫尔辛基。数据集内容如下： 涡度协方差数据：在SMEAR III（生态系统-大气关系观测站；https://meta.icos-cp.eu/resources/stations/ES_FI-Kmp）开展的二氧化碳（CO₂）、一氧化碳（CO）及羰基硫（COS）通量连续观测数据。 气象观测数据：在SMEAR III涡度协方差塔及邻近建筑屋顶获取的温度、湿度、风速、风向及光合有效辐射等关键气象参数。 土壤观测数据：在昆普拉植物园园区内采集的土壤温度与土壤体积含水量数据。 叶面积指数（Leaf Area Index, LAI）：该数据集源自Sentinel-2卫星影像，用于提供植被密度信息，可在参数化建模中关联羰基硫（COS）通量与光合CO₂吸收过程。 交通观测数据：研究区域内实测的车流量与平均车速信息，用于估算人为CO₂排放。 土地利用数据：详细的土地利用类型制图成果，可支撑植被分布的空间分析研究。