RV Investigator Voyage IN2019_V04 Underway UWY Data

This record describes the Underway (UWY) data collected from the Marine National Facility (MNF) RV Investigator Voyage IN2019_V04, titled: "Hotspot dynamics in the Coral Sea: connections between the Australian plate and deep Earth." The voyage took place between August 7 and September 3, 2019 departing from Cairns (QLD) and arriving in Brisbane (QLD).Standard Underway data is continuously recorded, consisting of: (1) Navigation data (NAV): Latitude, Longitude, Speed, Heading, Course Over Ground, Gyros, and Doppler Log (dual GPS instrument). (2) Thermosalinograph (TSG): Water Salinity, Flow-Rate, Temperature, Fluorescence, pCO2 and Optode/Oxygen. (3) Atmospheric (MET): Humidity, Wind Speed and Direction (vane and ultrasonic), Radiometer/Sea Surface Temperature, Pyranometer/Solar Radiation, Photosynthetically Active Radiation (PAR), Air Temperature, Air Pressure, Rain, Ozone and Trace Gases (port and starboard instruments).The quality-controlled RV Investigator underway meteorological and SST data are supplied to the IMOS AODN where they are publicly available at the "Ships of Opportunity" Thredds server (http://thredds.aodn.org.au/thredds/catalog/IMOS/SOOP/SOOP-ASF/VLMJ_Investigator/catalog.html) for research. From there, they are downloaded by NOAA for their In Situ Quality Monitoring web site (iQUAM2) and made available for satellite SST validation. The SBE 38 SST data are used within the Australian Bureau of Meteorology for real-time satellite SST validation and ingested into real-time SST analyses which are then used as the boundary condition for Numerical Weather Prediction models. The meteorological and SST data are uploaded onto the Global Telecommunications System (GTS) for global dissemination to Meteorological Agencies, and separately supplied to the SAMOS (http://samos.coaps.fsu.edu/html/) Project for air-sea flux research. The real-time SBE 38 SST data are currently (2017) used in the following data products (accessed via the GTS):• International Comprehensive Ocean-Atmosphere Data Set (ICOADS R3.0) (http://icoads.noaa.gov/) • NOAA NCEI Extended Reconstructed Sea Surface Temperature version 4 (ERSST.v4) (https://www.ncdc.noaa.gov/data-access/marineocean-data/extended-reconstructed-sea-surface-temperature-ersst-v4) • Hadley Centre SST Data Set (HadSST3) (http://www.metoffice.gov.uk/hadobs/hadsst3/)• Global Ocean Surface Underway Data (GOSUD) Project (http://www.gosud.org/) • Bureau of Meteorology daily and weekly SST analyses (http://www.bom.gov.au/marine/sst.shtml) • NOAA NCEI “Reynolds” daily global OISST analysis (https://www.ncdc.noaa.gov/oisst)• NASA JPL “MUR” 1 km daily global SST analysis (https://mur.jpl.nasa.gov/)• UK Met Office “OSTIA” daily global SST analysis (http://ghrsst-pp.metoffice.com/pages/latest_analysis/ostia.html)• CMC daily global SST analysis• Ourocean “G1SST” global daily 1 km SST analysis (https://ourocean.jpl.nasa.gov/SST)As part of the underway data gathering system, other datasets are produced (e.g., pCO2, ISAR SST) which are processed separately and have their own metadata records.Data are recorded at 5 second intervals. Near real-time data are available via the link "Visualisation tool for Underway Data." This dataset will be processed and archived within the CSIRO Oceans & Atmosphere (O&A) Information and Data Centre (IDC) in Hobart (TAS). Data are available at time intervals of 5 sec (NetCDF format), 10 sec and 5 min (ASCII format). Additional information regarding this dataset is contained in the Voyage Summary and/or the Data Processing Report for this voyage.

本数据集记录了来源于澳大利亚海洋国家设施（Marine National Facility, MNF）“调查者号”科考船（RV Investigator）IN2019_V04航次的走航（Underway, UWY）数据，航次主题为《珊瑚海热点动力学：澳大利亚板块与地球深部的关联》。本次航次于2019年8月7日至9月3日开展，从凯恩斯（昆士兰州）启航，最终抵达布里斯班（昆士兰州）。

标准走航数据为连续采集所得，包含以下三类：(1) 导航数据（NAV）：纬度、经度、航速、航向、对地航向、陀螺罗经数据，以及双GPS多普勒计程仪；(2) 温盐测量仪（Thermosalinograph, TSG）数据：海水盐度、流量、水温、荧光强度、二氧化碳分压（pCO₂）以及光学溶解氧传感器数据；(3) 大气气象数据（MET）：湿度、风速与风向（风标及超声传感器）、辐射计/海表温度、总日射表/太阳辐射、光合有效辐射（Photosynthetically Active Radiation, PAR）、气温、气压、降雨量、臭氧及痕量气体（左舷与右舷观测仪器）数据。

经质量控制的“调查者号”走航气象与海表温度（SST）数据已提交至澳大利亚综合海洋观测系统（IMOS）海洋数据网络（AODN），科研人员可通过“机遇船舶”Thredds服务器（http://thredds.aodn.org.au/thredds/catalog/IMOS/SOOP/SOOP-ASF/VLMJ_Investigator/catalog.html）公开获取，用于科研用途。美国国家海洋和大气管理局（NOAA）从该服务器下载数据至其原位质量监测网站（iQUAM2），并用于卫星海表温度验证。SBE 38型海表温度数据被澳大利亚气象局用于实时卫星海表温度验证，并接入实时海表温度分析系统，作为数值天气预报模型的边界条件。该气象与海表温度数据已上传至全球电信系统（Global Telecommunications System, GTS），以供全球气象机构共享，同时另有数据提交至SAMOS项目（http://samos.coaps.fsu.edu/html/）用于海气通量研究。截至2017年，实时SBE 38型海表温度数据已被应用于以下数据产品（通过GTS获取）：
• 国际综合海洋-大气数据集（International Comprehensive Ocean-Atmosphere Data Set, ICOADS R3.0）（http://icoads.noaa.gov/）
• NOAA国家环境信息中心（NCEI）扩展重建海表温度数据集第4版（ERSST.v4）（https://www.ncdc.noaa.gov/data-access/marineocean-data/extended-reconstructed-sea-surface-temperature-ersst-v4）
• 哈德利中心海表温度数据集（HadSST3）（http://www.metoffice.gov.uk/hadobs/hadsst3/）
• 全球海洋走航数据（Global Ocean Surface Underway Data, GOSUD）项目（http://www.gosud.org/）
• 澳大利亚气象局每日及周度海表温度分析产品（http://www.bom.gov.au/marine/sst.shtml）
• NOAA NCEI“雷诺兹”每日全球最优插值海表温度（OISST）分析数据集（https://www.ncdc.noaa.gov/oisst）
• NASA喷气推进实验室（JPL）“MUR”1km分辨率每日全球海表温度分析产品（https://mur.jpl.nasa.gov/）
• 英国气象局“OSTIA”每日全球海表温度分析产品（http://ghrsst-pp.metoffice.com/pages/latest_analysis/ostia.html）
• 加拿大环境与气候变化中心（CMC）每日全球海表温度分析产品
• Ourocean“G1SST”全球1km分辨率每日海表温度分析产品（https://ourocean.jpl.nasa.gov/SST）

作为走航数据采集系统的一部分，本项目还生成了其他数据集（如pCO₂、ISAR SST），此类数据将单独处理并拥有独立的元数据记录。

本数据集的采集间隔为5秒，近实时数据可通过“走航数据可视化工具”链接获取。数据集将由位于塔斯马尼亚州霍巴特的澳大利亚联邦科学与工业研究组织（CSIRO）海洋与大气（O&A）信息与数据中心（IDC）进行处理与归档。数据集提供三种数据版本：5秒间隔（NetCDF格式）、10秒间隔及5分钟间隔（ASCII格式）。有关本数据集的更多详细信息，请参见本次航次的航次总结报告和/或数据处理报告。