A shore-based station that provides identity, time synchronization, and text messages, which report (message 4) every ten seconds and are identified by a 00MIDxxxxx MMSI. These stations can also transmit AIS ATON Reports (message 21) and Application Specific Messages (ASM, message 6 and message 8) for meteorological or hydrological information, marine safety information, etc. (see the IALA Application Specific Message Collection). The Coast Guard Light List maintains a list of U.S. stations that also act as AIS ATONs or transmit ASMs. In the United States, these stations are solely operated by the U.S. Coast Guard (USCG) in the Nationwide Automatic Identification System, a nationwide network that supports all USCG missions and is designed to enhance the Coast Guards maritime domain awareness of vessels operating in or approaching the nations waterways, ports, and infrastructure. This network, which comprises 130-plus base stations and 150-plus USACE inland stations, collects over 120 million AIS messages daily and shares information with other government agencies, industry, academia, and coastal planners.

Regional Ocean Modeling System (ROMS) 7-day, 3-hourly forecast for the region surrounding the islands of Samoa at approximately 3-km resolution. Boundary conditions provided by the global, 1/12-degree (~9-km) HYbrid Coordinate Ocean Model (HYCOM). Atmospheric forcing generated by the Weather Research and Forecasting (WRF) model for the region surrounding the islands of Samoa (wrf_samoa) at approximately 3-km resolution. Tide forcing uses the Oregon State University (OSU) Tidal Prediction Software (OTPS) TOPEX/Poseidon global inverse solution (TPXO) to derive barotropic tidal elevation and velocity. Data are assimilated over the previous 3 days using all available observations to improve the model estimate of current ocean state (its nowcast) before forecasts are run. Assimilated observations may include satellite-based sea surface temperatures from MODIS, AVHRR, or OSTIA; satellite-based sea surface height from AVISO; and in-situ water temperature and salinity profiles from ARGO floats. While considerable effort has been made to implement all model components in a thorough, correct, and accurate manner, numerous sources of error are possible. As such, please use these data with the caution appropriate for any ocean related activity.

해양기상부이는 해수면에서 해양기상현상을 다양한 기상장비로 측정하고, 그 값을 일정한 물리량으로 변환 · 처리한 후에 위성 등 원격통신을 이용하여 관측 자료를 전송합니다. 파고부이는 해양기상부이보다 근해에 설치하여, 연안바다의 복잡한 지형에 의해 국지적으로 서로 달리 나타나는 파고를 관측하는 장비입니다. 파고, 파주기 관측의 경우는 해양기상부이와 마찬가지로 해수면에서 파고부이 몸체가 움직이는 가속도를 측정하여 분석합니다. 생산주기: 매시 30분 및 정시(00분), 일 보유기간: (해양기상부이) 1996년 7월~현재(지점별 상이함) / (파고부이) 2009년 1월~현재(지점별 상이함)

This pilot study follows the movements of 6 derelict fishing nets over time to study how far derelict nets can travel within an atoll, and how long they remain stationary. Six floating derelict fishing nets were located and tagged with satellite buoys in Pearl and Hermes Atoll in the Northwestern Hawaiian Islands during a marine debris removal mission in 2018. Locations of the 6 nets were transmitted every four hours from 09-30-2018 until the buoys broke free or stopped transmitting due to technical reasons. Last known stationary locations were surveyed on a return mission in September of 2021, and 4 of the 6 nets were relocated.

Satellite-based altimeters provide fundamental observations of sea surface height that continue to underpin our understanding of the ocean’s role in the Earth’s climate system. Understanding changes in mean sea level at global to regional scales is critical for understanding the response of the ocean to a warming climate – both through the thermal expansion of the ocean and the melting of mountain glaciers and polar ice caps. Sea surface height also provides a lens into ocean dynamic processes at regional to local scales. As with all scientific observations, validation of instrumentation is vital to ensure that measurements are accurate and reliable. The IMOS Satellite Altimeter Calibration and Validation Sub-Facility maintains a suite of instrumentation primarily in Bass Strait, providing the only southern hemisphere in situ calibration and validation site that has operated since the launch of the TOPEX/Poseidon mission in 1992. The facility uses Global Navigation Satellite Systems (GNSS) equipped buoys on the ocean surface as well as an array of sub-surface moored oceanographic instrumentation that includes temperature, pressure and salinity sensors and advanced 5-beam acoustic doppler current profilers (ADCPs). Data from this infrastructure is combined to derive a sustained Sea Surface Height (SSH) record that can be directly compared to altimeter measurements. These data provide important contributions to Ocean Surface Topography Science Team (OSTST) and other mission-specific validation teams including those associated with the Sentinel-6 Michael Freilich, Sentinel-3A and 3B, and SWOT missions. For validation of nadir altimeters, the key metric of interest to mission science teams the altimeter absolute bias, the difference between altimeter and in situ measurements of SSH in an absolute reference frame. Analysis of the absolute bias record over time helps ensure data produced from satellite altimeters are accurate and precise on a global scale. In addition to the primary site located in Bass Strait, the sub-facility operates some sensors opportunistically at other sites including at the Southern Ocean Flux Station (SOFS) in the Southern Ocean, and at Davies Reef and Yongala in and adjacent to Great Barrier Reef. Data made available from the sub-facility includes: Bass Strait (various locations corresponding to different altimeter comparison points) • Bottom pressure, temperature and salinity (P, T, S) • Water current (U, V) • Significant Wave Height (SWH) • Sea Surface Height (SSH) • Note different temporal extents and sampling rates are provided on a site-by-site basis deploying on deployments and variable of choice. Southern Ocean • Sea Surface Height • Significant Wave Height • Note two different sampling rates are provided. The temporal extent depends on the SOFS deployment. Davies Reef and Yongala • Bottom pressure, temperature and salinity (P, T, S) • Sea Surface Height • Note different temporal extents and sampling rates are provided on a site-by-site basis deploying on deployments and variable of choice.

This nowCOAST™ time-enabled map service provides maps depicting the latest surface weather and marine weather observations at observing sites using the international station model. The station model is a method for representing information collected at an observing station using symbols and numbers. The station model depicts current weather conditions, cloud cover, wind speed, wind direction, visibility, air temperature, dew point temperature, sea surface water temperature, significant wave height, air pressure adjusted to mean sea level, and the change in air pressure over the last 3 hours.

The Maria Island acidification mooring is co-located with the Maria Island National Reference Station (NRSMAI) on the east coast of Tasmania. It was first deployed in April 2011. The mooring's instruments measure surface CO2, temperature and salinity. The hydrochemistry sampling at the National Reference Stations will also provide total alkalinity data, as will future pH sensors on the moorings, allowing for a complete determination of the carbonate system and pH. Current instrumentation: Battelle Seaology pCO2 monitor, Aanderaa Oxygen Optode and Sea-bird Electronics, model SBE16plus V2 SEACAT. The Acidification Moorings sub-facility is responsible for building an ocean carbon and acidification monitoring network for Australian waters. These moorings provide key observations to help us understand and address the problem of increasing ocean acidification.