Ieodo Ocean Research Station (Ieodo ORS): delayed mode dataset, annual release (2021)

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.

伊奥多海洋研究站（Ieodo Ocean Research Station, Ieodo ORS）于2003年6月正式启用，其建设初衷为通过对当地大气与海洋环境开展连续同步的多学科观测，深化对东海动力学特征的认知，包括其对韩国海洋、陆地及大气环境的影响。该站位于朝鲜半岛西南部，距离济州岛（科学文献中常称Jeju Island，旧称Cheju Island）最南端的马罗岛（Marado）149公里，由韩国海洋科学技术院（Korea Institute of Ocean Science and Technology, KIOST）在名为“伊奥多”的海底礁石附近搭建的钢套架塔式平台构成。韩国水文海洋院（Korea Hydrographic and Oceanographic Agency, KHOA）自2007年1月1日起负责运营该平台。伊奥多海洋研究站基准面（datum level, DL）以上高度达36米，包含一处船舶停靠区及6层甲板，分别为底层甲板、中间甲板、储藏甲板、主甲板、屋顶甲板与直升机甲板。该站多数气象仪器与传感器均部署于屋顶甲板，涵盖2台风速仪、1台气压计、2个空气温度传感器及2个相对湿度传感器。伊奥多海洋研究站长期稳定开展海洋温度与盐度观测：韩国水文海洋院全年在3米、20.5米及38米水深处布设安德拉（Aanderaa）感应式电导率-温度（CT）传感器，采样间隔设置为1分钟。主甲板设有居住设施与电气控制室，储藏甲板则安装有海水淡化系统与柴油发电机组。