RV Investigator Voyage IN2021_V03 Underway UWY Data

This record describes the Underway (UWY) data collected from the Marine National Facility (MNF) RV Investigator Voyage IN2021_V03, titled "Integrated Marine Observing System: monitoring of East Australian Current property transports at 27o S." The voyage took place between May 8 and June 3, 2021 departing from Hobart (TAS) 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 National Collections and Marine Infrastructure (NCMI) 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.

本数据集记录了源自澳大利亚海洋国家设施（Marine National Facility, MNF）“调查者号”（RV Investigator）IN2021_V03航次的走航（Underway, UWY）数据，航次标题为“综合海洋观测系统：南纬27度东澳大利亚海流属性输运监测”。该航次于2021年5月8日从塔斯马尼亚州霍巴特起航，同年6月3日抵达昆士兰州布里斯班。
标准走航数据为连续采集数据，包含以下三类：
1. 导航数据（NAV）：纬度、经度、航速、航向、对地航向、陀螺罗经数据以及多普勒计程仪（双GPS仪器）数据。
2. 温盐仪（Thermosalinograph, TSG）：海水盐度、流速、水温、荧光强度、二氧化碳分压（pCO2）以及Optode/溶解氧数据。
3. 大气气象数据（MET）：湿度、风速与风向（风向标与超声风速仪数据）、辐射计/海表温度（SST）、总辐射计/太阳辐射、光合有效辐射（PAR）、气温、气压、降雨量、臭氧以及痕量气体数据（左舷与右舷仪器采集）。
经过质量控制的“调查者号”走航气象与海表温度数据已提交至澳大利亚综合海洋观测系统澳大利亚海洋数据网络（IMOS AODN），公众可通过“机遇船舶”Thredds服务器（http://thredds.aodn.org.au/thredds/catalog/IMOS/SOOP/SOOP-ASF/VLMJ_Investigator/catalog.html）获取这些数据用于科研用途。美国国家海洋和大气管理局（NOAA）从该服务器下载数据至其现场质量监测网站（iQUAM2），并用于卫星海表温度验证工作。
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式的边界条件使用。该气象与海表温度数据已上传至全球电信系统（Global Telecommunications System, GTS），供全球气象机构获取，同时还单独提供给SAMOS项目（http://samos.coaps.fsu.edu/html/）用于海气通量研究。
截至2017年，通过全球电信系统获取的实时SBE 38型海表温度数据已被应用于以下数据集产品：
• 国际综合海洋-大气数据集（International Comprehensive Ocean-Atmosphere Data Set, ICOADS R3.0）（http://icoads.noaa.gov/）
• 美国国家环境信息中心（NCEI）扩展重建海表温度版本4（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/）
• 全球海洋表面走航数据（Global Ocean Surface Underway Data, GOSUD）项目（http://www.gosud.org/）
• 澳大利亚气象局每日与每周海表温度分析产品（http://www.bom.gov.au/marine/sst.shtml）
• 美国国家环境信息中心“雷诺兹”每日全球最优插值海表温度（OISST）分析产品（https://www.ncdc.noaa.gov/oisst）
• 美国国家航空航天局喷气推进实验室（NASA JPL）“MUR”1公里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部（CMC）每日全球海表温度分析产品
• Ourocean“G1SST”全球每日1公里分辨率海表温度分析产品（https://ourocean.jpl.nasa.gov/SST）
作为走航数据采集系统的一部分，本项目还生成其他数据集（如pCO2、ISAR海表温度数据），这些数据将单独处理并拥有独立的元数据记录。
数据以5秒为间隔进行记录，用户可通过“走航数据可视化工具”链接获取近实时数据。本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）国家海洋科研设施与海洋基础设施（National Collections and Marine Infrastructure, NCMI）信息与数据中心（Information and Data Centre, IDC）进行处理与归档。本数据集提供三种时间分辨率的数据：5秒间隔（NetCDF格式）、10秒间隔与5分钟间隔（ASCII格式）。有关本数据集的更多信息可查阅本航次的航次总结报告及/或数据处理报告。