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Physical and biochemical oceanographic data from the Hawaii Ocean Time-series (HOT) program collected by University of Hawaii at Station ALOHA in the Pacific Ocean 100 miles north of Oahu, Hawaii, since 1988

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 08:18 AM | Dataset Last Updated: March 25, 2026 at 12:00 AM
This dataset includes physical and biochemical oceanographic observational data from the Hawaii Ocean Time-series (HOT) Program, including thermosalinograph, CTD, bottle and biochemical data. The HOT program makes repeated observations of the physics, biology and chemistry at a site approximately 100 km north of Oahu, Hawaii. The program began in 1988. Two stations are visited about once a month: Kahe Point (Station 1: 21.34N, 158.27W) and Station ALOHA (Station 2: 22.75N, 158W). Various other stations are made intermittently in support of similar research objectives or mooring deployments. This dataset also includes physical-biogeochemical measurements from Station HALE-ALOHA (Hawai'i Air-sea Logging Experiment, A Long-Term Oligotrophic Habitat Assessment), measurements of high-quality air-sea fluxes and the associated upper ocean response from The Woods Hole Oceanographic Institution (WHOI) Hawaii Ocean Timeseries (HOT) Site (WHOTS), as well as hydrographic and biogeochemical parameters from the ALOHA-CLIMAX Regional Study.

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0000497 0000639 0000640 0000641 0001016 0001704 0001707 0001710

Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
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  "@type": "vcard:Contact",
  "hasEmail": "mailto:ncei.info@noaa.gov"
}
describedByType application/octet-steam
description This dataset includes physical and biochemical oceanographic observational data from the Hawaii Ocean Time-series (HOT) Program, including thermosalinograph, CTD, bottle and biochemical data. The HOT program makes repeated observations of the physics, biology and chemistry at a site approximately 100 km north of Oahu, Hawaii. The program began in 1988. Two stations are visited about once a month: Kahe Point (Station 1: 21.34N, 158.27W) and Station ALOHA (Station 2: 22.75N, 158W). Various other stations are made intermittently in support of similar research objectives or mooring deployments. This dataset also includes physical-biogeochemical measurements from Station HALE-ALOHA (Hawai'i Air-sea Logging Experiment, A Long-Term Oligotrophic Habitat Assessment), measurements of high-quality air-sea fluxes and the associated upper ocean response from The Woods Hole Oceanographic Institution (WHOI) Hawaii Ocean Timeseries (HOT) Site (WHOTS), as well as hydrographic and biogeochemical parameters from the ALOHA-CLIMAX Regional Study.
distribution 
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/Station-ALOHA-HOT.xml
issued 1993-01-01T00:00:00.000+00:00
keyword 
[
  "0000497",
  "0000639",
  "0000640",
  "0000641",
  "0001016",
  "0001704",
  "0001707",
  "0001710",
  "0010624",
  "0010740",
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  "0224752",
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  "0224849",
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  "0284084",
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  "9800125",
  "9900206",
  "9900207",
  "9900208",
  "9900212",
  "9900213",
  "9900214",
  "9900215",
  "AIR TEMPERATURE",
  "AIR TEMPERATURE - DRY BULB",
  "AIR TEMPERATURE - WET BULB",
  "AMMONIA (NH3)",
  "AMMONIUM (NH4)",
  "bacteria",
  "BACTERIA - HETEROTROPHIC",
  "BAROMETRIC PRESSURE",
  "BIOCHEMISTRY",
  "biological data",
  "CARBON",
  "CARBON - TOTAL ORGANIC",
  "CARBON ASSIMILATION",
  "CAROTENOIDS - PLANT",
  "CHLOROPHYLL",
  "CHLOROPHYLL - RELATIVE FLUORESCENCE",
  "CHLOROPHYLL A",
  "CHLOROPHYLL C",
  "cloud amount/frequency",
  "cloud type",
  "CONDUCTIVITY",
  "CURRENT DIRECTION",
  "CURRENT METER - EAST-WEST COMPONENT (U)",
  "CURRENT METER - NORTH-SOUTH COMPONENT (V)",
  "CURRENT SPEED",
  "CURRENT SPEED - UP/DOWN COMPONENT (W)",
  "DELTA CARBON-13",
  "DELTA NITROGEN-15",
  "DEPTH - OBSERVATION",
  "dew point",
  "Diadinoxanthin",
  "DISSOLVED INORGANIC CARBON (DIC)",
  "DISSOLVED ORGANIC CARBON",
  "Dissolved Organic Nitrogen",
  "DISSOLVED OXYGEN",
  "DOWNWELLING RADIANCE",
  "DYNAMIC DEPTH ANOMALY",
  "DYNAMIC HEIGHT",
  "Eukaryote",
  "FLUORESCENCE",
  "fucoxanthin",
  "HPLC PIGMENTS",
  "HYDROCARBONS - TOTAL RESOLVED",
  "HYDROSTATIC PRESSURE",
  "irradiance",
  "LIGHT ATTENUATION",
  "LIGHT TRANSMISSION",
  "NITRATE",
  "nitrate + nitrite content (concentration)",
  "NITRATE/NITRITE RATIO",
  "NITRITE",
  "NITROGEN",
  "NITROGEN - PARTICULATE",
  "nitrous oxide (N2O)",
  "NUTRIENTS",
  "ORGANIC CHEMICALS",
  "OXYGEN",
  "OXYGEN - DISSOLVED ORGANIC",
  "partial pressure of carbon dioxide - water",
  "Particulate Inorganic Carbon",
  "PARTICULATE ORGANIC CARBON",
  "PARTICULATE ORGANIC NITROGEN (PON)",
  "particulate phosphorus",
  "pH",
  "PHAEOPIGMENTS",
  "phosphate",
  "PHOSPHATE - TOTAL",
  "PHOSPHORUS - ORGANIC",
  "PHOTOSYNTHETIC ACTIVE RADIATION (PAR)",
  "PHYTOPLANKTON",
  "PIGMENTS",
  "POLYCHLORINATED BIPHENYLS",
  "Potential temperature (theta)",
  "PRIMARY PRODUCTIVITY",
  "Prochlorococcus",
  "SALINITY",
  "SALINITY - SURFACE WATER",
  "SEA STATE",
  "SEA SURFACE TEMPERATURE",
  "Secchi depth",
  "SIGMA-T",
  "SIGMA-THETA",
  "silica",
  "silicate",
  "SOLAR RADIATION - ATMOSPHERIC",
  "SOUND VELOCITY",
  "surface irradiance per incubation period",
  "suspended solids",
  "Synechococcus",
  "TIDE HEIGHT",
  "TIDE STAGE",
  "total alkalinity",
  "TOTAL CARBON",
  "TOTAL PHOSPHORUS",
  "TRANSMISSIVITY",
  "turbidity",
  "UPWELLING IRRADIANCE",
  "UREA",
  "VISIBILITY",
  "Volatile Organic Compounds",
  "WATER COLOR",
  "WATER DENSITY",
  "water depth",
  "WATER TEMPERATURE",
  "WAVE DATA",
  "WAVE HEIGHT",
  "WAVE PERIOD",
  "WEATHER",
  "WIND DIRECTION",
  "WIND FORCE",
  "WIND SPEED",
  "ZOOPLANKTON BIOMASS",
  "bathythermograph - XBT",
  "bottle",
  "buoy - moored buoy",
  "carbon-14 incubation",
  "CTD",
  "fluorometer",
  "inverted echo sounder (IES)",
  "irradiance detector",
  "laboratory analysis",
  "meteorological sensor",
  "oxygen sensor",
  "radiometer",
  "salinometer",
  "Secchi disk",
  "sediment sampler - corer",
  "sediment sampler - grab",
  "spectrophotometer",
  "thermistor",
  "thermosalinograph",
  "transmissometer",
  "trap - sediment",
  "visual analysis",
  "benthic",
  "biological",
  "chemical",
  "current measurements",
  "geological",
  "integrated profiles",
  "laboratory analyses",
  "meteorological",
  "optical",
  "physical",
  "profile",
  "site samples",
  "time series",
  "underway",
  "water chemistry",
  "CROMWELL",
  "FIXED PLATFORM OF UNITED STATES",
  "FIXED STATIONS OF UNITED STATES",
  "KA'IMIKAI-O-KANALOA",
  "KAHO",
  "KAIMALINO",
  "KILA",
  "MARINE VIEW",
  "MOANA WAVE",
  "NA'INA",
  "NESHANIC",
  "NEW HORIZON",
  "NOAA Ship Hi'ialakai",
  "NOAA Ship Oscar Elton Sette",
  "NOAA Ship Townsend Cromwell",
  "OCEANUS",
  "R/V KILO MOANA",
  "R/V Knorr",
  "R/V MAURICE EWING",
  "R/V Melville",
  "R/V Roger Revelle",
  "R/V THOMAS G. THOMPSON",
  "R/V WECOMA",
  "RV Alpha Helix",
  "Sikuliaq",
  "THOMSON",
  "UNKNOWN PLATFORMS OF UNITED STATES",
  "USCGC Klamath",
  "USCGC Westwind",
  "Oregon State University, College of Earth, Ocean, and Atmospheric Sciences",
  "University of Hawaiʻi at Mānoa",
  "University of Washington",
  "Woods Hole Oceanographic Institution",
  "Oregon State University, College of Earth, Ocean, and Atmospheric Sciences",
  "University of Hawaiʻi at Hilo",
  "University of Hawaiʻi at Mānoa",
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  "Hawaii Air-Sea Logging Experiment - A Long-term Oligotrophic Habitat Assessment (HALE-ALOHA)",
  "Hawaii Ocean Time-series Program: Biogeochemistry and Ecology Component (HOT-BEACH)",
  "JOINT GLOBAL OCEAN FLUX STUDY (JGOFS)",
  "Joint Global Ocean Flux Study: Hawaii Ocean Time-series (JGOFS HOT)",
  "WHOI Hawaii Ocean Timeseries Site (WHOTS)",
  "WORLD CLIMATE RESEARCH PROGRAM",
  "World Ocean Circulation Experiment (WOCE)",
  "Coastal Waters of Hawaii",
  "Hawaiian Islands Humpback Whale National Marine Sanctuary",
  "North Pacific Ocean",
  "Northeast Pacific Ocean (limit-180)",
  "Papahānaumokuākea Marine National Monument",
  "oceanography",
  "DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce",
  "OR-STATE/CEOAS > College of Earth, Ocean, and Atmospheric Sciences, Oregon State University",
  "WHOI > WOODS HOLE OCEANOGRAPHIC INSTITUTION",
  "AC-1",
  "AC-2",
  "HA-1",
  "HA-2",
  "HA-3",
  "HA-4",
  "HA-5",
  "HOT-1",
  "HOT-10",
  "HOT-100",
  "HOT-101",
  "HOT-102",
  "HOT-103",
  "HOT-104",
  "HOT-105",
  "HOT-11",
  "HOT-12",
  "HOT-13",
  "HOT-14",
  "HOT-15",
  "HOT-16",
  "HOT-17",
  "HOT-18",
  "HOT-19",
  "HOT-2",
  "HOT-20",
  "HOT-21",
  "HOT-22",
  "HOT-23",
  "HOT-24",
  "HOT-25",
  "HOT-26",
  "HOT-27",
  "HOT-28",
  "HOT-29",
  "HOT-3",
  "HOT-30",
  "HOT-31",
  "HOT-32",
  "HOT-33",
  "HOT-34",
  "HOT-35",
  "HOT-36",
  "HOT-37",
  "HOT-38",
  "HOT-39",
  "HOT-4",
  "HOT-40",
  "HOT-41",
  "HOT-42",
  "HOT-43",
  "HOT-44",
  "HOT-45",
  "HOT-46",
  "HOT-47",
  "HOT-48",
  "HOT-49",
  "HOT-5",
  "HOT-50",
  "HOT-51",
  "HOT-52",
  "HOT-53",
  "HOT-54",
  "HOT-55",
  "HOT-56",
  "HOT-57",
  "HOT-58",
  "HOT-59",
  "HOT-6",
  "HOT-60",
  "HOT-61",
  "HOT-62",
  "HOT-63",
  "HOT-64",
  "HOT-65",
  "HOT-66",
  "HOT-67",
  "HOT-68",
  "HOT-69",
  "HOT-7",
  "HOT-70",
  "HOT-71",
  "HOT-72",
  "HOT-73",
  "HOT-74",
  "HOT-75",
  "HOT-76",
  "HOT-77",
  "HOT-78",
  "HOT-79",
  "HOT-8",
  "HOT-80",
  "HOT-81",
  "HOT-82",
  "HOT-83",
  "HOT-84",
  "HOT-85",
  "HOT-86",
  "HOT-87",
  "HOT-88",
  "HOT-89",
  "HOT-9",
  "HOT-90",
  "HOT-91",
  "HOT-92",
  "HOT-93",
  "HOT-94",
  "HOT-95",
  "HOT-96",
  "HOT-97",
  "HOT-98",
  "HOT-99",
  "CLIVAR > Climate Variability",
  "HOT > Hawaiian Ocean Time Series Project",
  "JGOFS > Joint Global Ocean Flux Study, IGBP",
  "WCRP > World Climate Research Program",
  "WOCE > World Ocean Circulation Experiment",
  "Woods Hole HOT (WHOTS)",
  "Woods Hole Hawaii Ocean Time Series (WHOTS)",
  "HA-1",
  "HA-2",
  "HA-3",
  "ALOHA-Climax",
  "Hawaii Air-sea Logging Experiment, A Long-term Oligotrophic Habitat Assessment (HALE-ALOHA)",
  "Hawaii Ocean Time-series (HOTS)",
  "Joint Global Ocean Flux Study (JGOFS)",
  "World Ocean Circulation Experiment (WOCE)",
  "EARTH SCIENCE > AGRICULTURE > ANIMAL SCIENCE > ANIMAL PHYSIOLOGY AND BIOCHEMISTRY",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > INCOMING SOLAR RADIATION",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > AIR TEMPERATURE",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > DEW POINT TEMPERATURE",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND DIRECTION",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND SPEED",
  "EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD FREQUENCY",
  "EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD TYPES",
  "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION",
  "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA",
  "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA > CYANOBACTERIA (BLUE-GREEN ALGAE)",
  "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > PLANKTON > PHYTOPLANKTON",
  "EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > PRIMARY PRODUCTION",
  "EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON",
  "EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SURFACE SALINITY",
  "EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH",
  "EARTH SCIENCE > OCEANS > OCEAN ACOUSTICS > ACOUSTIC VELOCITY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON DIOXIDE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > HYDROCARBONS",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITROGEN",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PIGMENTS",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PIGMENTS > CHLOROPHYLL",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SUSPENDED SOLIDS",
  "EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS > ATTENUATION/TRANSMISSION",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS > FLUORESCENCE",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS > IRRADIANCE",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS > OCEAN COLOR",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS > PHOTOSYNTHETICALLY ACTIVE RADIATION",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS > SECCHI DEPTH",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS > TURBIDITY",
  "EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > POTENTIAL TEMPERATURE",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
  "EARTH SCIENCE > OCEANS > OCEAN WAVES",
  "EARTH SCIENCE > OCEANS > OCEAN WAVES > SEA STATE",
  "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE HEIGHT",
  "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE PERIOD",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
  "EARTH SCIENCE > OCEANS > TIDES",
  "EARTH SCIENCE > OCEANS > TIDES > TIDAL HEIGHT",
  "CTD",
  "Chlorophyll, Pigment (uG/L)",
  "Nitrate (uMOL/KG)",
  "Oxygen (micromoles per kilogram)",
  "Pressure (Decibars)",
  "Salinity (1978 International Practical Salinity Scale)",
  "Temperature (Degrees Celsius, International Temperature Scale of 1990)",
  "hydrographic data",
  "profile data",
  "Adenosine 5'-Triphosphate (ATP) (ng/kg)",
  "Alkalinity (ueq/kg)",
  "Biogeochemical Rate Measurements",
  "Bottle Oxygen (umol/kg)",
  "Bottle Salinity (PSS-78)",
  "CTD",
  "CTD Oxygen (UMOL/KG)",
  "CTD Pressure (Decibars)",
  "CTD Salinity (PSS-78)",
  "CTD Salinity (PSU-78)",
  "CTD Temperature (ITS-90)",
  "Carbon (mg/m2/d)",
  "Carbon Assimilation",
  "Chlorophyll a. Mean (mg/m3)",
  "Chlorophyll and pigment",
  "Chlorophylll, Pigment (uG/L)",
  "Chlroropyll a. Standard Deviation (mg/m3)",
  "Dark - replicate 1 (mg C/m3)",
  "Dark - replicate 2 (mg C/m3)",
  "Dark - replicate 3 (mg C/m3)",
  "Delta-13C of PC (permil vs. VPDB)",
  "Delta-15N of PN (permil vs. air-N2)",
  "Dissolved Inorganic Carbon (DIC) (umol/kg)",
  "Dissolved Organic Carbon (DOC) (umol/kg)",
  "Dissolved Organic Nitrate (DON) (umol/kg)",
  "Dissolved Organic Phosphate (DOP) (umol/kg)",
  "Eukaryotes (E.bact) (10**5/ml)",
  "Eukaryotes (no./ml)",
  "Fluorometric Chlorophyll a (Chl a.) (ug/l)",
  "Guanosine 5'-Triphosphate (GTP) (ng/kg)",
  "HPLC 19'-Butanoyloxyfucoxanthin (19 But) (ng/l)",
  "HPLC 19'-Hexanoyloxyfucoxanthin (19 Hex) (ng/l)",
  "HPLC Alpha Carotens (A.Car) (ng/l)",
  "HPLC Beta Carotens (B.Car) (ng/l)",
  "HPLC Carotens (caroten) (ng/l)",
  "HPLC Chlorophyll [c1+c2] & Mg 3, 8 DVP4A5 (Chl c1+2) (ng/l)",
  "HPLC Chlorophyll c1 + c2 + c3 (Chl+) (ng/l)",
  "HPLC Chlorophyll c3 (Chl c3) (ng/l)",
  "HPLC Chlorophyllide a (Chlda a) (ng/l)",
  "HPLC Chloropyll b (Chl b) (ng/l)",
  "HPLC Chloropyll c4 (Chl c4) (ng/l)",
  "HPLC Diadinoxanthin (Diadino) (ng/l)",
  "HPLC Divinyl Chlorophyll a (DV.Chla) (ng/l)",
  "HPLC Fucoxanthin (Fuco) (ng/l)",
  "HPLC Lutein (Lutein) (ng/l)",
  "HPLC Monovinyl Chlorophyll a (MV.Chla) (ng/l)",
  "HPLC Peridinin (Peridino) (ng/l)",
  "HPLC Prasinoxanthin (Prasino) (ng/l)",
  "HPLC Violaxanthin (Viol) (ng/l)",
  "HPLC Zeaxanthin (Zeaxan) (ng/l)",
  "HPLC chlorophyll a. (HPLCchl) (ng/l)",
  "Heterotrophic Bacteria (H.Bact) (10**5/ml)",
  "Heterotrophic Bacteria (no./ml)",
  "Hydrogen Peroxide (H2O2) (umol/kg)",
  "International Temperature Scale of 1990)",
  "Light - replicate 1 (mg C/m3)",
  "Light - replicate 2 (mg C/m3)",
  "Light - replicate 3 (mg C/m3)",
  "Low-level Nitrate (LLN) (nmol/kg)",
  "Low-level Phosphate (LLP) (nmol/kg)",
  "Low-level Silica (LLSi) (umol/kg)",
  "Mass (mg/m2/d)",
  "NO2 (NMOL/KG)",
  "Niskin Bottles",
  "Nitrate (uMOL/KG)",
  "Nitrate + Nitrite (NO2+NO3) (umol/kg)",
  "Nitrogen (mg/m2/d)",
  "Nitrous Oxide (N2O) (umol/kg)",
  "Oxygen (micromoles per kilogram)",
  "P13c (permil)",
  "P15N (permil)",
  "PE .4u (NG/L)",
  "PE 10u (NG/L)",
  "PE 5u (NG/L)",
  "PIC (UMOL/KG)",
  "Partial Pressure of Carbon Dioxide (pCO2) (uatm)",
  "Particulate Carbon (PC) (umol/kg)",
  "Particulate Inorganic Carbon (mg/m2/d)",
  "Particulate Nitrogen (PN) (umol/kg)",
  "Particulate Phosphate (PP) (nmol/kg)",
  "Pheopigments (Pheo) (ug/l)",
  "Pheopigments Mean (mg/m3)",
  "Pheopigments Standard Deviation (mg/m3)",
  "Phosphate (PO4) (umol/kg)",
  "Phosphorus (mg/m2/d)",
  "Potential Density (kg/m3)",
  "Potential Temperature (ITC-90)",
  "Pressure (Decibars)",
  "Primary Production Parameters:",
  "Prochlorococcus (P.Bact) (10**5/ml)",
  "Prochlorococcus (no./ml)",
  "Psi (NMOL/KG)",
  "SPEC.SI (UMOL/KG)",
  "Salinity (1978 International Practical Salinity Scale)",
  "Salinity (PSS-78)",
  "Sediment Trap Flux Parameters:",
  "Silica (mg/m2/d)",
  "Silicate (SiO4) (umol/kg)",
  "Synechococcus (S.Bact) (10**5/ml)",
  "Synechococcus (no./ml)",
  "TD700A (UG/L)",
  "TD700B (UG/L)",
  "TD700C (UG/L)",
  "Temperature (Degrees Celsius",
  "Temperature (Degrees Celsius)",
  "Temperature (ITC-90)",
  "Total Dissolved Nitrogen (TDN) (umol/kg)",
  "Total Dissolved Phosphorus (TDP) (umol/kg)",
  "Transmission",
  "bacterioplankton",
  "biogeochemical data",
  "butanoyloxyfucoxanthin",
  "hydrographic data",
  "oxygen",
  "pH (TOT25, either sws25 or nbs25)",
  "peridinin",
  "physical data",
  "physical oceanographic data",
  "prasinoxanthin",
  "profile data",
  "salinity",
  "surface measurements",
  "temperature",
  "temperature and salinity profile",
  "temperature and salinity time series",
  "thermosalinograph",
  "thermosalinograph data",
  "underway data",
  "water chemistry profile",
  "water column chemical data",
  "zeaxan",
  "CTD > Conductivity, Temperature, Depth",
  "FLUOROMETERS > FLUOROMETERS",
  "GRAB SAMPLERS",
  "IES > Inverted Echo Sounders",
  "INCUBATOR",
  "OPTSPEC > Optical Spectrometer",
  "OXYGEN METERS > OXYGEN METERS",
  "RADIOMETERS",
  "SALINOMETERS",
  "SECCHI DISKS > SECCHI DISKS",
  "SEDIMENT CORERS > SEDIMENT CORERS",
  "THERMISTORS > THERMISTORS",
  "THERMOSALINOGRAPHS",
  "TRANSMISSOMETERS",
  "TRAPS > TRAPS",
  "XBT > Expendable Bathythermographs",
  "Conductivity-Temperature-Depth (CTD)",
  "Gas Tension Device (GTD)",
  "FIXED OBSERVATION STATIONS > FIXED OBSERVATION STATIONS",
  "Ships",
  "ALPHA HELIX (call sign: WSD7078, ICES code: 31HX, 1966-)",
  "CROMWELL (ICES code: 31WM)",
  "Hi'ialakai (call sign: WTEY, ICES code: 33HL, 2004-)",
  "KA'IMIKAI-O-KANALOA (call sign: WBN4310, ICES code: 33KI, 1995-)",
  "KAHO (ICES code: 31KA)",
  "KAIMALINO (ICES code: 33KA)",
  "KILA (ICES code: 33KL)",
  "KLAMATH (ICES code: 31KL)",
  "KNORR (call sign: KCEJ, ICES code: 316N, 1970-)",
  "Kilo Moana (call sign: WDA7827, ICES code: 33KB, 2002-)",
  "MARINE VIEW (ICES code: 31MW)",
  "MAURICE EWING (call sign: WLDZ, ICES code: 3230, 1988-2005)",
  "MELVILLE (call sign: WECB, ICES code: 318M, 1969-)",
  "MOANA WAVE (call sign: WUS9293, ICES code: 32MW, 1974-2011)",
  "NA'INA (ICES code: 33NA)",
  "NESHANIC (ICES code: 32NH)",
  "NEW HORIZON (call sign: WKWB, ICES code: 32NM, 1978-2015)",
  "OCEANUS (call sign: WXAQ, ICES code: 32OC, 1976-)",
  "OSCAR ELTON SETTE (call sign: WTEE, ICES code: 33OC, 2003-)",
  "ROGER REVELLE (call sign: KAOU, ICES code: 33RR, 1996-)",
  "Sikuliaq (call sign: WDN7246, ICES code: 33BI, 2013-)",
  "THOMAS G. THOMPSON (call sign: KTDQ, ICES code: 3250, 1991-)",
  "TOWNSEND CROMWELL (ICES code: 31TC)",
  "WECOMA (call sign: WSD7079, ICES code: 32WC, 1976-)",
  "WESTWIND (call sign: NLKL, ICES code: 31WE, 1952-1988)",
  "HALE-ALOHA Mooring",
  "OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > HAWAIIAN ISLANDS",
  "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN",
  "HALE ALOHA",
  "Hawaii",
  "Hawaii Ocean Time Series (HOT)",
  "Kaena Point",
  "Kahe Point",
  "Oahu",
  "Pacific",
  "Station Aloha",
  "central north Pacific",
  "HALE ALOHA",
  "Hawaii",
  "Hawaii Ocean Time Series (HOT)",
  "Kaena Point",
  "Kahe Point",
  "Oahu",
  "Pacific",
  "Station Aloha",
  "central north Pacific",
  "complete ocean profile surface to bottom"
]
landingPage https://www.ncei.noaa.gov/contact
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2026-03-25T00:00:00.000+00:00
publisher 
{
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
}
references 
[
  "https://hahana.soest.hawaii.edu/stationaloha/",
  "https://discover.library.noaa.gov/permalink/01NOAA_INST/1qbesct/alma991001174379707381"
]
rights otherRestrictions
spatial -157.324,20.716,157.691,24.914
temporal 1988-10-01T00:00:00+00:00/2024-12-22T00:00:00+00:00
theme 
[
  "geospatial"
]
title Physical and biochemical oceanographic data from the Hawaii Ocean Time-series (HOT) program collected by University of Hawaii at Station ALOHA in the Pacific Ocean 100 miles north of Oahu, Hawaii, since 1988

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