Ieodo Ocean Research Station (Ieodo ORS): delayed mode dataset, annual release (2020)

ieodo ocean research station (ieodo ors) opened in june 2003, and was built to help advance the understanding of the dynamics of the east china sea, including its influence on korea’s marine, terrestrial, and atmospheric environments, via the continuous and simultaneous multidisciplinary observation of local air and sea environments.ieodo ors is located 149 km from marado, at the southernmost tip of jejudo (commonly referred to in scientific literature as jeju island or previously as cheju island), southwest of the korean peninsula. its steel-jacket framed tower-type platform was built near the submarine rock named “ieodo” by the korea institute of ocean science and technology (kiost). the korea hydrographic and oceanographic agency (khoa) has operated this platform since january 1, 2007.ieodo ors stands 36 m in height above the datum level (dl) and consists of a boat landing plus 6 decks (bottom deck, intermediate deck, cellar deck, main deck, roof deck, and heli deck). most of its meteorological instruments and sensors are installed on the roof deck, including two anemometers, one barometer, two air temperature sensors, and two relative humidity sensors. ocean temperature and salinity have been relatively consistently measured at ieodo ors. aanderaa inductive-type conductivity-temperature (ct) sensors are installed at depths of 3, 20.5, and 38 m throughout the entire year, operating at 1 min sampling intervals by khoa. residential facilities and the electrical control room are on the main deck, while a seawater desalination system and a diesel generator system are installed on the cellar deck.

ieodo海洋研究站（简称ieodo或ors）于2003年6月启用，其建设旨在助力深化对东海动力学的理解，包括其对韩国海洋、陆地和大气环境的影响，通过持续且同步的多学科观测当地空气和海洋环境实现。ieodo或rs位于Marado西南149公里的济州岛最南端（在科学文献中通常称为济州岛，之前称为Cheju岛），位于韩国半岛西南部。该站由韩国海洋科学技术院（KIOST）建造的钢壳框架塔型平台位于名为“ieodo”的暗礁附近。自2007年1月1日起，韩国水文和海洋局（KHOA）运营该平台。ieodo或rs相对于基准水平面（DL）高36米，由一个码头及6层甲板（底部甲板、中层甲板、地下室甲板、主甲板、屋顶甲板和直升机甲板）组成。其大部分气象仪器和传感器安装在屋顶甲板上，包括两个风速计、一个气压计、两个空气温度传感器和两个相对湿度传感器。海洋温度和盐度在ieodo或rs站点的测量相对稳定。Aanderaa感应式电导率-温度（CT）传感器全年部署在3米、20.5米和38米深度的海底，由KHOA以每分钟一次的采样间隔进行操作。住宅设施和电气控制室位于主甲板，而海水淡化系统和柴油发电系统则安装在地下室甲板上。