Benthic photosynthetically active radiation (bPAR or benthic PAR) at Yongala, Myrmidon, Palm Passage and Heron Island South, April 2016 to November 2017 (NESP TWQ 2.3.1, AIMS and IMOS)

This dataset contains benthic photosynthetically active radiation (PAR; bPAR) at the Q-IMOS Myrmidon, Palm Passage and Heron Island South mooring stations from May 2016 through to November 2017.This dataset was collected to provide in situ reference data for calibration/validation of a remote sensing ocean color model to estimate bPAR (benthic photosynthetically active radiation) as part of NESP Tropical Water Quality Hub project 2.3.1. The mooring is maintained as part of the Queensland IMOS (Q-IMOS) mooring network, which collects oceanographic and water quality data at several stations. bPAR sensors were installed at four stations: Myrmidon (MYD), Palm Passage (PPS), Heron Island South (HIS) and Yongala (YGL). Methods:A WETLabs Environmental Characterization Optics (ECO) PARSB sensor was deployed and clamp-mounted to a permanent mooring wire at a fixed depth within the water column in each of three mooring sites, Myrmidon (MYD), Palm Passage (PPS), and Heron Island South (HIS). Each PAR sensor was programmed to collect 5-second blocks of data every 15 minutes. At the fourth site, Yongala (YGL), a SEABIRD SBE16PLUS V2 SEACAT profiler with PARSB auxiliary sensor “facing” upward was deployed 0.5 m above the bottom substrate.After each period of deployment, data were downloaded and the instrument’s optical component was checked, characterized and tested to ensure the quality and validity of the data between deployments. For each recovery period, the data were analysed and quality controlled such that: (i) data records in the beginning and end of each deployment were excluded to ensure that only stable PAR measurements were included in the analysis, (ii) data points when instrument failure was experienced due to instrument’s internal battery power problems were also excluded. Night-time values were forced to zero by applying an offset based on the dark count readings of the sensor for each deployment period. Summary of mooring stations and in situ data collectionMooring station:    YGLLatitude: (°S) -19.302Longitude: (°E) 147.621Region: Shallow inshore, seasonally turbidNominal station Depth: 30mDeployment start:19 Sep 2015Mooring station:    PPSLatitude (°S): -18.308Longitude (°E): 147.167Region: Deep, outer shelf, clear oceanicNominal station Depth: 70m    Deployment start: 28 May 2016Mooring station:    MYDLatitude (°S): -18.220Longitude (°E): 147.344Region: Deep, shelf edge, clear oceanicNominal station Depth: 192mDeployment start: 25 May 2016Mooring station:    HISLatitude (°S): -23.513    Longitude (°E): 151.955    Region: Shallow inshore, intermediateNominal station Depth: 46m    Deployment start: 03 Apr 2016                                                                                                                Data Dictionary:- bPAR: benthic photosynthetically available radiation- bPARoffset: offset (i.e., night time dark readings) corrected bPAR valuesData Location:This dataset is filed in the eAtlas enduring data repository at: dataesp2\2.3.1_Benthic-light

本数据集涵盖2016年5月至2017年11月期间，Q-IMOS（Queensland Integrated Marine Observing System）迈里米登（Myrmidon）、棕榈航道（Palm Passage）及赫伦岛南（Heron Island South）锚测站点的底栖光合有效辐射（benthic photosynthetically active radiation, bPAR）数据。本数据集的采集工作旨在为遥感海洋颜色模型的校准与验证提供原位参考数据，以估算底栖光合有效辐射（benthic photosynthetically active radiation, bPAR），该工作作为NESP热带水质中心（NESP Tropical Water Quality Hub）项目2.3.1的组成部分开展。作为昆士兰综合海洋观测系统锚测网络的一部分，该锚站网络在多个站点收集海洋学与水质数据，本数据集共在4个站点部署了传感器：迈里米登站（Myrmidon, MYD）、棕榈航道站（Palm Passage, PPS）、赫伦岛南站（Heron Island South, HIS）与永加拉站（Yongala, YGL）。

采集方法：在迈里米登站（MYD）、棕榈航道站（PPS）及赫伦岛南站（HIS）这3个锚测站点中，均将WETLabs环境表征光学（Environmental Characterization Optics, ECO）PARSB传感器夹持安装于永久锚缆的水体固定深度位置。每台光合有效辐射（Photosynthetically Active Radiation, PAR）传感器被设置为每15分钟采集一组时长5秒的数据块。在第四个站点永加拉站（YGL），则部署了搭载PARSB辅助传感器的SEABIRD SBE16PLUS V2 SEACAT剖面仪，该辅助传感器朝上安装，部署在底质上方0.5米处。

每次部署周期结束后，工作人员会下载采集数据，并对仪器的光学组件进行检查、表征与测试，以确保两次部署周期间的数据质量与有效性。针对每一次回收的数据集，均开展如下分析与质量控制操作：(i) 剔除每次部署起始与结束阶段的数据记录，仅保留稳定的PAR测量数据；(ii) 剔除因仪器内部电池供电故障导致失效时段的观测数据。此外，通过基于各部署周期内传感器暗计数读数设置偏移量的方式，将夜间观测数值强制置零。

锚测站点与原位数据采集汇总：
锚测站点：YGL
纬度（南纬）：-19.302°
经度（东经）：147.621°
区域：近岸浅水区，季节性浑浊海域
标称站点水深：30米
部署开始时间：2015年9月19日

锚测站点：PPS
纬度（南纬）：-18.308°
经度（东经）：147.167°
区域：外陆架深水区，大洋性清澈海域
标称站点水深：70米
部署开始时间：2016年5月28日

锚测站点：MYD
纬度（南纬）：-18.220°
经度（东经）：147.344°
区域：陆架边缘深水区，大洋性清澈海域
标称站点水深：192米
部署开始时间：2016年5月25日

锚测站点：HIS
纬度（南纬）：-23.513°
经度（东经）：151.955°
区域：近岸浅水区，中等浑浊海域
标称站点水深：46米
部署开始时间：2016年4月3日

数据字典：
- bPAR：底栖光合有效辐射（benthic photosynthetically available radiation）
- bPARoffset：经偏移量（即夜间暗读数）校正后的bPAR数值

数据存储位置：本数据集存储于eAtlas永久性数据仓储中，存储路径为：dataesp22.3.1_Benthic-light