Surface Chlorophyll a concentration and Secchi depth data from the SEAHAB project

This was the in situ data collection for the Sensor-agnostic Estimation of Harmful Algal Blooms (SEAHAB) project, March 2023. The data represents two days of surface water sampling between Table Bay and Kommetjie for the purpose of satellite chlorophyll a concentration and water clarity validation.
Secchi depth was measured using a weighted 30cm diameter white disk, which was lowered into the water until it can no longer be seen by the observer; the Secchi depth is the depth of the water at the point when the Secchi disk disappears/reappears. Surface seawater samples were collected in 2L plastic bottles, sealed and kept cool and in the dark until filtration on the same day.
The contact person for the data is Dr Marie Smith: [e-mail]

本数据集为2023年3月有害藻华传感器无关估计（Sensor-agnostic Estimation of Harmful Algal Blooms, SEAHAB）项目的原位采集数据。本次采样覆盖桌湾（Table Bay）与科梅特杰（Kommetjie）之间海域，为期两天，用于卫星叶绿素a浓度与水体透明度的验证工作。
赛氏盘（Secchi disk）深度的测量方法为：使用直径30cm的配重白色圆盘，将其缓慢下放至水中，直至观测者无法再观测到该圆盘，此时对应的水深即为赛氏盘深度（即圆盘消失/重现时的水深）。表层海水样品采用2L塑料瓶采集，密封后置于阴凉避光环境保存，并于采样当日完成过滤。
本数据集的联系人是玛丽·史密斯博士，联系邮箱：[e-mail]