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National Science Foundation (NSF) Land-Margin Ecosystem Research (LMER) Columbia River Estuarine Turbidity Maximum (CRETM) program data, 1990-1999

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 08:16 AM | Dataset Last Updated: May 12, 2026 at 12:00 AM
This dataset includes geochemical, physical, and biological data collected in the Columbia River Estuary and the Fraser River from 1990 to 1999 as part of the Columbia River Estuary Turbidity Maxima (CRETM) research project. This dataset includes temperature, salinity, sigma-theta, and current meter data, as well as optical backscattering, chlorophyll a concentration, beam attenuation, and percent transmissivity measurements of pure water from pump casts and associated CTD casts. This dataset also includes zooplankton species, individual densities, total densities, phaeopigments, suspended particulate matter (SPM), particulate organic carbon (POC), particulate nitrogen, particulate organic nitrogen, rates of primary production per hour, and other microbiological data. CTD data, unless otherwise noted, were taken on the downcast and the resulting salinity and temperature profiles were used to select pump depths on the following upcast. The CRETM project, part of the National Science Foundation (NSF) Land-Margin Ecosystem Research (LMER) research program, is an ecosystem-scale, interdisciplinary investigation of the role of estuarine turbidity maxima (ETM) in shaping the food web of the Columbia River estuary.

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0000004 0000029 0000035 0000045 0000384 0000420 9800145 9800148

Complete Metadata
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accessLevel non-public
contactPoint 
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describedByType application/octet-steam
description This dataset includes geochemical, physical, and biological data collected in the Columbia River Estuary and the Fraser River from 1990 to 1999 as part of the Columbia River Estuary Turbidity Maxima (CRETM) research project. This dataset includes temperature, salinity, sigma-theta, and current meter data, as well as optical backscattering, chlorophyll a concentration, beam attenuation, and percent transmissivity measurements of pure water from pump casts and associated CTD casts. This dataset also includes zooplankton species, individual densities, total densities, phaeopigments, suspended particulate matter (SPM), particulate organic carbon (POC), particulate nitrogen, particulate organic nitrogen, rates of primary production per hour, and other microbiological data. CTD data, unless otherwise noted, were taken on the downcast and the resulting salinity and temperature profiles were used to select pump depths on the following upcast. The CRETM project, part of the National Science Foundation (NSF) Land-Margin Ecosystem Research (LMER) research program, is an ecosystem-scale, interdisciplinary investigation of the role of estuarine turbidity maxima (ETM) in shaping the food web of the Columbia River estuary.
distribution 
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/NSF-LMER-CRETM.xml
issued 1998-01-01T00:00:00.000+00:00
keyword 
[
  "0000004",
  "0000029",
  "0000035",
  "0000045",
  "0000384",
  "0000420",
  "9800145",
  "9800148",
  "9800193",
  "9900159",
  "AIR TEMPERATURE",
  "AIR TEMPERATURE - WET BULB",
  "AMMONIA (NH3)",
  "AMMONIUM (NH4)",
  "Attenuation/Transmission",
  "bacteria",
  "BAROMETRIC PRESSURE",
  "CARBON - CARBON 14 ASSIMILATION",
  "CHLOROFLUOROCARBON-113 (CFC-113)",
  "CHLOROPHYLL",
  "CHLOROPHYLL A",
  "cloud amount/frequency",
  "cloud type",
  "CONDUCTIVITY",
  "CURRENT DIRECTION",
  "CURRENT METER - EAST-WEST COMPONENT (U)",
  "CURRENT METER - NORTH-SOUTH COMPONENT (V)",
  "CURRENT SPEED",
  "DELTA CARBON-13",
  "DEPTH - OBSERVATION",
  "DEPTH - SENSOR",
  "DISSOLVED ORGANIC CARBON",
  "DISSOLVED OXYGEN",
  "FLUORESCENCE",
  "HYDROSTATIC PRESSURE",
  "LIGHT ATTENUATION",
  "LIGHT TRANSMISSION",
  "MANGANESE",
  "METALS",
  "MICROBIOLOGY",
  "NITRATE",
  "NITRITE",
  "NITROGEN - PARTICULATE",
  "NUTRIENTS",
  "OPTICAL BACKSCATTER",
  "OPTICAL PROPERTIES",
  "PARTICULATE ORGANIC CARBON",
  "pH",
  "PHAEOPHYTIN",
  "PHAEOPIGMENT CONCENTRATION",
  "PHAEOPIGMENTS",
  "phosphate",
  "PHYTOPLANKTON",
  "PRIMARY PRODUCTIVITY",
  "SALINITY",
  "Secchi depth",
  "SIGMA-T",
  "silicate",
  "SOUND VELOCITY",
  "SPECIES IDENTIFICATION - SUBSPECIES",
  "suspended solids",
  "total alkalinity",
  "TRACE METALS",
  "TRANSMISSIVITY",
  "VISIBILITY",
  "WATER DENSITY",
  "WATER TEMPERATURE",
  "WIND DIRECTION",
  "WIND SPEED",
  "ZOOPLANKTON DENSITIES",
  "ZOOPLANKTON IDENTITIES",
  "ZOOPLANKTON SPECIES IDENTITIES",
  "bottle",
  "chromatograph",
  "CTD",
  "current meter - PCM",
  "fluorometer",
  "net - plankton net",
  "pump casts",
  "pump sampler",
  "transmissometer",
  "biological",
  "chemical",
  "continuous",
  "current measurements",
  "geological",
  "integrated profiles",
  "laboratory analyses",
  "optical",
  "physical",
  "profile",
  "pump cast",
  "time series",
  "tows",
  "tows - plankton tows",
  "water chemistry",
  "Don Raul",
  "FIXED PLATFORM OF UNITED STATES",
  "R/V Clifford A. Barnes",
  "R/V WECOMA",
  "ROBERT GORDON SPROUL",
  "UNKNOWN PLATFORMS OF UNITED STATES",
  "Louisiana Universities Marine Consortium",
  "Oregon Graduate Institute of Science and Technology",
  "Oregon State University, College of Earth, Ocean, and Atmospheric Sciences",
  "University of California, Davis",
  "University of Washington",
  "University of Washington, Fisheries Research Institute",
  "UW School of Oceanography",
  "Oregon Graduate Institute of Science and Technology",
  "Oregon State University, College of Earth, Ocean, and Atmospheric Sciences",
  "University of Washington",
  "University of Washington, Fisheries Research Institute",
  "US National Oceanographic Data Center",
  "COLUMBIA RIVER ESTUARINE TURBIDITY MAXIMUM RESEARCH PROGRAM (CRETM)",
  "LAND-MARGIN ECOSYSTEM RESEARCH (LMER)",
  "Long-Term Ecological Research Program (LTER)",
  "Coastal Waters of Washington/Oregon",
  "Columbia River estuary - Washington/Oregon",
  "Fraser River estuary - British Columbia",
  "North Pacific Ocean",
  "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",
  "UWA/OCEAN > School of Oceanography, University of Washington",
  "LMER > Land Margin Ecosystem Research Project",
  "LTER > Long-Term Ecological Research",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > AIR 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 > BACTERIA/ARCHAEA",
  "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 > 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 > CHLOROPHYLL",
  "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 > 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 > SECCHI DEPTH",
  "EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
  "CTD > Conductivity, Temperature, Depth",
  "CURRENT METERS",
  "FLUOROMETERS > FLUOROMETERS",
  "GAS CHROMATOGRAPHS > GAS CHROMATOGRAPHS",
  "PLANKTON NETS",
  "TRANSMISSOMETERS",
  "FIXED OBSERVATION STATIONS > FIXED OBSERVATION STATIONS",
  "CLIFFORD A. BARNES (call sign: WRN5495, ICES code: 33CB, 1982-)",
  "ROBERT GORDON SPROUL (call sign: WSQ2674, ICES code: 32QU, 1981-)",
  "WECOMA (call sign: WSD7079, ICES code: 32WC, 1976-)",
  "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN",
  "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA"
]
landingPage https://www.ncei.noaa.gov/contact
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2026-05-12T00:00:00.000+00:00
publisher 
{
  "name": "NOAA National Centers for Environmental Information",
  "@type": "org:Organization"
}
references 
[
  "https://depts.washington.edu/cretmweb/"
]
rights otherRestrictions
spatial -122.0,45.0,-124.04,49.5
temporal 1990-09-26T00:00:00+00:00/1999-07-18T00:00:00+00:00
theme 
[
  "geospatial"
]
title National Science Foundation (NSF) Land-Margin Ecosystem Research (LMER) Columbia River Estuarine Turbidity Maximum (CRETM) program data, 1990-1999

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