Algal Blooms Sweden - 2021

Dataset containing images of algal blooms in the Baltic Sea. The data is provided with a metadata description containing time spotted, comments, municipality, county and coordinates of each image. The images and metadata file are archived in a zip package. Images show various summer surface accumulations of so-called harmful algal blooms (HABs) or nuisance blooms. Typically, these blooms consists of species of cyanobacteria of the order of Nostocales, including toxic Nodularia and Aphanizomenon. These blooms were verified by Informationscentralen (Länsstyrelsen Stockholm and Länsstyrelsen Västerbotten). However, the blooms seen in the images have not been taxonomically annotated by microscopy nor genetic analysis. The following data fields are contained in the metadata files (provided in both json and csv format): report_id: unique identifier for reporting record, type: string time_spotted: date that bloom was spotted, type: datetime algae_overview_photo: url to overview photo submitted, type: string algae_detail_photo: url to detailed photo submitted, type: string comments: Any additional information relating to the bloom, type: string lat: Latitude of position where bloom was seen, type: float long: Longitude of position where bloom was seen, type: float place: County where bloom was spotted, type: string kommun: Municipality where bloom was spotted, type: string Total observations: 251 Notes: Not every observation has an accompanying image and others were verified using other information provided. One of the submitted photographs for 2021 contained unintentionally collected personal data. It has been excluded from this dataset to make open data publishing possible.本数据集收录波罗的海藻华相关图像数据。配套提供元数据说明文件，涵盖每张图像的发现时间、备注信息、所属市镇、郡域及坐标信息。图像与元数据文件已打包为ZIP压缩包。 图像展示了夏季海面出现的各类所谓有害藻华（Harmful Algal Blooms, HABs）或烦扰型藻华聚集现象。此类藻华通常由念珠藻目（Nostocales）的蓝细菌物种组成，其中包括具毒性的节球藻属（Nodularia）与束丝藻属（Aphanizomenon）物种。本数据集的藻华样本已由信息中心（斯德哥尔摩郡行政署与西博滕郡行政署）完成核验，但图像中呈现的藻华并未通过显微镜观察或基因分析完成分类学标注。 元数据文件提供JSON与CSV两种格式，包含以下数据字段： - report_id：报告记录的唯一标识符，数据类型为字符串 - time_spotted：藻华被发现的日期，数据类型为日期时间 - algae_overview_photo：提交的全景照片URL，数据类型为字符串 - algae_detail_photo：提交的细节照片URL，数据类型为字符串 - comments：与藻华相关的补充信息，数据类型为字符串 - lat：藻华发现位置的纬度，数据类型为浮点数 - long：藻华发现位置的经度，数据类型为浮点数 - place：藻华发现所属的郡域，数据类型为字符串 - kommun：藻华发现所属的市镇，数据类型为字符串 本数据集共计251条观测记录。注：并非所有观测记录均配有配套图像，部分观测仅通过其他提供的信息完成核验。 2021年提交的一张照片意外包含了个人数据，为保障开放数据发布的可行性，该照片已从本数据集中移除。