Stormwater runoff pollution of an existing catchment consisting essentially of apartment buildings in Braunschweig/Germany.

This dataset includes stormwater runoff concentrations of pollutants (COD, TP, DP, NO₃, NH₄, TSS) taken from a sampling point in Braunschweig, Germany. The total catchment size is 5 ha with approximately 1.8 ha total imperviousness consisting essentially of apartment buildings from the 1970s and roads. This catchment was chosen for comparatively clear delimitation to different land uses considering location-independent results. Samples were taken as part of the research project TransMiT (https://www.transmit-zukunftsstadt.de/). More information including sampling and analytical methods are detailed in the corresponding journal paper "Dynamization of Urban Runoff Pollution and Quantity" and supplementary data, submitted to the MDPI-journal Water. Description of fields: - SamplingPoint:<br> - storm sewer: stormwater runoff sampled during individual rain events in a storm water sewer manhole receiving runoff from the entire catchment<br> - SamplingTime: time of sampling during individual rain event (CET)<br> - COD: measured value of chemical oxygen demand (COD)<br> - TP: measured value of total phosphorus (TP)<br> - DP: measured value of dissovled phosphorus (COD)<br> - NO₃: measured value of nitrate (NO3)<br> - NH₄: measured value of ammonium (NH4)<br> - TSS: measured value of total suspended solids (TSS)<br> - N/A: data not available<br> - UnitsAbbreviation: all data given in milligram per litre (mg/L) The data file is provided in comma separated format ("TransMiT.csv") and contains concentrations of all samples.本数据集包含德国布伦瑞克一处采样点的雨水径流污染物浓度数据，污染物指标包括化学需氧量 (COD)、总磷 (TP)、溶解磷 (DP)、硝酸盐 (NO₃)、氨氮 (NH₄) 及总悬浮颗粒物 (TSS)。该汇水区总面积为5公顷，不透水面积约1.8公顷，用地以1970年代建造的公寓楼及道路为主。因其用地边界清晰，可排除区位因素干扰以获得独立可靠的研究结果，故被选为研究对象。本次采样属于TransMiT研究项目的一部分（项目网址：https://www.transmit-zukunftsstadt.de/）。更多包含采样与分析方法的细节信息，详见投稿至MDPI旗下期刊《Water》的研究论文《城市径流污染与水量的动态变化》及其补充材料。 字段说明： - 采样点：雨水检查井采样点，接收整个汇水区的雨水径流，在单次降雨事件中采集径流样本 - 采样时间：单次降雨事件中的采样时刻（中欧时间CET） - COD：化学需氧量实测值 - TP：总磷实测值 - DP：溶解磷实测值 - NO₃：硝酸盐实测值 - NH₄：氨氮实测值 - TSS：总悬浮颗粒物实测值 - N/A：数据不可用 - 单位缩写：所有数据单位均为毫克每升（mg/L） 本数据集以逗号分隔值格式存储，文件名为"TransMiT.csv"，包含所有样本的污染物浓度数据。