Oceanographic data collected from station West Point by Hudson River Environmental Conditions Observing System (HRECOS) and assembled by Mid-Atlantic Regional Association Coastal Ocean Observing System (MARACOOS) in the Hudson River from 2013-06-22 to 2019-03-31 (NCEI Accession 0163418)

This dataset contains oceanographic data collected at West Point, a fixed station in the Hudson River. These sensors measure CONDUCTIVITY, DEPTH - OBSERVATION, DISSOLVED OXYGEN, LATITUDE, LONGITUDE, OXYGEN - PERCENT SATURATION, SALINITY, WATER LEVEL, WATER TEMPERATURE, pH and turbidity at frequent intervals in the nearshore coastal ocean. Hudson River Environmental Conditions Observing System (HRECOS) collected the data and provided the data to MARACOOS, which assembles data from Hudson River Environmental Conditions Observing System (HRECOS) and other sub-regional coastal and ocean observing systems of the Mid-Atlantic Coastal United States, submitted the data to NCEI as part of the Integrated Ocean Observing System Data Assembly Centers (IOOS DACs) Data Stewardship Program. The data are made available in netCDF formatted files, which follow the Climate and Forecast metadata convention (CF) and the Attribute Convention for Data Discovery (ACDD). Each month, NCEI adds to this dataset the data collected during the previous month.

(7/14/2016 – present): The water quality station is located on the right bank at the South Dock at West Point Military Academy. A YSI 6600 water-quality sonde measures dissolved oxygen (% sat. and concentration), sonde depth, pH, specific conductance, salinity, turbidity, and water temperature every 15 minutes. The sonde is housed in a 10’ stainless tube mounted about 2’ below the deck surface. The sonde depth sensor sits about 4.5 feet below NGVD29 vertical datum, or roughly 4 feet below mean low tide. Water depth (relative to the instrument) is calculated from the sonde pressure transducer and is corrected for variations in barometric (atmospheric pressure) in real-time by the data logger and a CS106 barometer using the following equation: Corrected Depth = Depth + ((1013- Barometric Pressure) * .0102).

(7/17/2013 – 9/12/2014): The sonde was housed in an 18' long aluminum tube mounted to the dock. The bolt supporting the sonde was approximately 10 feet below the level of low tide. Stage (relative to vertical datum NAVD88) was measured every 15 minutes with a nitrogen purge system connected to a Paroscientific PS2 pressure transducer.