RV Investigator Voyage IN2019_V06 Underway UWY Data

This record describes the Underway (UWY) data collected from the Marine National Facility (MNF) RV Investigator Voyage IN2019_V06, titled: "Tropical observations of atmospheric convection, biogenic emissions, ocean mixing, and processes generating intraseasonal SST variability." The voyage took place between October 19 and December 17, 2019 departing from Darwin (NT) and arriving in Darwin.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.

本记录描述了从澳大利亚海洋国家设施（Marine National Facility, MNF）"调查者号"（RV Investigator）IN2019_V06航次采集的走航（Underway, UWY）数据，航次标题为："热带地区大气对流、生物源排放、海洋混合及驱动季节内海表温度变率的过程观测"。该航次于2019年10月19日从北领地达尔文港出发，同年12月17日返回达尔文港。

标准走航数据为连续采集记录，包含以下类别：
1. 导航数据（NAV, Navigation data）：纬度、经度、航速、航向、对地航迹向、陀螺罗经以及多普勒计程仪（双GPS仪器）；
2. 温盐仪（Thermosalinograph, TSG）：海水盐度、流量、水温、荧光值、二氧化碳分压（pCO₂）以及光学溶解氧传感器（Optode）/溶解氧；
3. 气象数据（MET, Atmospheric data）：湿度、风速与风向（风向标与超声风速仪）、辐射计/海表温度、总辐射计/太阳辐射、光合有效辐射（PAR, Photosynthetically Active Radiation）、气温、气压、降雨、臭氧以及痕量气体（左舷与右舷搭载仪器）。

经质量控制的"调查者号"走航气象与海表温度（SST）数据已提交至综合海洋观测系统澳大利亚海洋数据网络（Integrated Marine Observing System Australian Ocean Data Network, IMOS AODN），可在"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（National Oceanic and Atmospheric Administration, NOAA）从该服务器下载数据至其原位质量监测网站（iQUAM2），用于卫星海表温度验证。SBE 38型海表温度传感器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（Numerical Weather Prediction, NWP）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），供全球气象机构共享，并另行提供给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可通过GTS获取的数据产品：
• 国际综合海洋大气数据集（ICOADS R3.0, International Comprehensive Ocean-Atmosphere Data Set）（http://icoads.noaa.gov/）
• 美国国家环境信息中心（National Centers for Environmental Information, NCEI）扩展重构海表温度数据集第4版（ERSST.v4, NOAA NCEI Extended Reconstructed Sea Surface Temperature version 4）（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, Hadley Centre SST Data Set）（http://www.metoffice.gov.uk/hadobs/hadsst3/）
• 全球海洋走航数据（GOSUD, Global Ocean Surface Underway Data）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（National Aeronautics and Space Administration Jet Propulsion Laboratory, 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1公里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。

数据以5秒为间隔进行记录。近实时数据可通过"走航数据可视化工具"链接获取。本数据集将在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（Commonwealth Scientific and Industrial Research Organisation, CSIRO）海洋与大气（O&A）信息与数据中心（IDC）进行处理与归档。本数据集提供5秒间隔（NetCDF格式）、10秒间隔与5分钟间隔（ASCII格式）三种数据规格。关于本数据集的更多信息详见本航次航次总结报告和/或数据处理报告。