gov.noaa.nodc:0156980 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-05-05T21:09:24Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Temperature, salinity, and water chemistry data from quarterly bottom transects of the Comprehensive Environmental Monitoring Program at the Ocean Thermal Energy Conversion plant in Keahole, Island of Hawaii 1993-2007 (NCEI Accession 0156980) 2016-11-29 publication 2016-11-16 creation NOAA National Centers for Environmental Information gov.noaa.nodc:0156980 NCEI Archive Management System 0156980 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Keith Olson Natural Energy Laboratory of Hawaii Authority (NELHA) keitho@nelha.org http://www.nehla.org HTTP Natural Energy Laboratory of Hawaii Authority (NELHA) website Institution web page information resourceProvider Natural Energy Laboratory of Hawaii Authority (NELHA) http://www.nehla.org HTTP Natural Energy Laboratory of Hawaii Authority (NELHA) website Institution web page information resourceProvider Patrick Caldwell NOAA National Centers for Environmental Information (NCEI) patrick.caldwell@noaa.gov collaborator Olson, Keith Natural Energy Laboratory of Hawaii Authority (NELHA) keitho@nelha.org http://www.nehla.org HTTP Natural Energy Laboratory of Hawaii Authority (NELHA) website Institution web page information author Keith Olson Natural Energy Laboratory of Hawaii Authority (NELHA) keitho@nelha.org http://www.nehla.org HTTP Natural Energy Laboratory of Hawaii Authority (NELHA) website Institution web page information pointOfContact Natural Energy Laboratory of Hawaii Authority (NELHA) http://www.nehla.org HTTP Natural Energy Laboratory of Hawaii Authority (NELHA) website Institution web page information contributor tableDigital The NATURAL ENERGY LABORATORY OF HAWAII AUTHORITY (NELHA) is a state agency that operates a unique and innovative ocean science and technology park in Kailua-Kona on the island of Hawaii. It supports an Ocean Thermal Energy Conversion (OTEC) facility at Keahole Point on the west coast of the Island of Hawaii. Five stations along six transects have been established where quasi-quarterly bottom water measurements are acquired for temperature, salinity, bacteria, and 12 water chemistry parameters within 1993 to 2007. Data are collected from small boats. The original data were provided as Microsoft Excel spreadsheets. Surface samples from these same transects are available in NCEI Accession 0156452. Ocean bottom sampling was included due to concerns related to dense cold seawater sinking to lower depths when returning to the environment. Surface water samples monitored the brackish, less dense groundwater intrusion into the marine water, which tends to float when ocean mixing energy is low. Due to new protocols in 2004 which did not require bottom samples, and because data indicated little or no difference from the surface waters, the bottom samples were discontinued in 2007. The purpose of the Comprehensive Environmental Monitoring Program is to fulfill NELHA's regulatory requirements and to protect the unique environmental resources of the Keahole Point area. Funding Agency: Natural Energy Laboratory Hawaii Authority Funding Agency: State of Hawaii completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0156980 Preview graphic PNG 0156980 NCEI ACCESSION NUMBER 2016-11-03 publication AMMONIA (NH3) bacteria CARBON - TOTAL ORGANIC CHLOROPHYLL A NITRATE pH phosphate SALINITY Silicon thymidine turbidity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS multi-parameter water quality sensor peristaltic pump pump sampler thermometer instrument NODC INSTRUMENT TYPES THESAURUS chemical in situ physical survey time series water chemistry theme NODC OBSERVATION TYPES THESAURUS Natural Energy Laboratory of Hawaii Authority dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS Natural Energy Laboratory of Hawaii Authority dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS OCEAN THERMAL ENERGY CONVERSION (OTEC) project NODC PROJECT NAMES THESAURUS Coastal Waters of Hawaii North Pacific Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication OTEC > Ocean Thermal Energy Conversion project Global Change Master Directory (GCMD) Project Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Comprehensive Environmental Monitoring Program (CEMP) project Provider Project Names EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE EARTH SCIENCE > OCEANS > OCEAN OPTICS > TURBIDITY EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Enterococci (Bacteria/100 ml) Fecal Coliform (Bacteria/100 ml) Trimethyl dihydronapthalene, TDN (uM and ug N/L) theme Provider Keywords THERMOMETERS > THERMOMETERS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian A.G.E Model 2100 precision salinometer YSI 556 multiprobe instrument Provider Instruments OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > HAWAIIAN ISLANDS OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Island of Hawaii Kailua-Kona Keahole Point place Provider Place Names DL1CX2 Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Olson, Keith (2016). Temperature, salinity, and water chemistry data from quarterly bottom transects of the Comprehensive Environmental Monitoring Program at the Ocean Thermal Energy Conversion plant in Keahole, Island of Hawaii 1993-2007 (NCEI Accession 0156980). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0156980. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. Vega, Luis; Pacific International Center for High Technology Research (2002). Water Temperatures from West Hawaii (Big Island) from 1993-06-18 to 1995-08-17 (NCEI Accession 9800047). NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/9800047. 2002-11-19 publication NOAA National Centers for Environmental Information gov.noaa.nodc:9800047 https://www.ncei.noaa.gov/archive/accession/9800047 HTTPS https://www.ncei.noaa.gov/archive/accession/9800047 Data files and documentation information Vega, Luis University of Hawaiʻi at Mānoa (UHM) https://manoa.hawaii.edu/ HTTPS University of Hawaiʻi at Mānoa (UHM) website Institution web page information author Pacific International Center for High Technology Research author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference dataDictionary Olson, Keith; Natural Energy Laboratory of Hawaii Authority (2004). Temperature, salinity, and water chemistry data from the Comprehensive Environmental Monitoring Program of the Ocean Thermal Energy Conversion plant at Keahole, Island of Hawaii, from shallow and deep intake pipes during 1982-2017 (NCEI Accession 0001623). NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0001623. 2004-07-14 publication NOAA National Centers for Environmental Information gov.noaa.nodc:0001623 https://www.ncei.noaa.gov/archive/accession/0001623 HTTPS https://www.ncei.noaa.gov/archive/accession/0001623 Data files and documentation information Olson, Keith Natural Energy Laboratory of Hawaii Authority (NELHA) keitho@nelha.org http://www.nehla.org HTTP Natural Energy Laboratory of Hawaii Authority (NELHA) website Institution web page information author Natural Energy Laboratory of Hawaii Authority http://www.nehla.org HTTP Natural Energy Laboratory of Hawaii Authority (NELHA) website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference dataDictionary Olson, Keith (2016). Temperature, salinity, and water chemistry data from quarterly surface transects of the Comprehensive Environmental Monitoring Program at the Ocean Thermal Energy Conversion plant in Keahole, Island of Hawaii 1993-2017 (NCEI Accession 0156452). NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0156452. 2016-10-07 publication NOAA National Centers for Environmental Information gov.noaa.nodc:0156452 https://www.ncei.noaa.gov/archive/accession/0156452 HTTPS https://www.ncei.noaa.gov/archive/accession/0156452 Data files and documentation information Olson, Keith Natural Energy Laboratory of Hawaii Authority (NELHA) keitho@nelha.org http://www.nehla.org HTTP Natural Energy Laboratory of Hawaii Authority (NELHA) website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference dataDictionary eng; USA utf8 environment oceans biota -156.067 -156.058 19.72 19.735 1993-07-26 2007-04-16 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Originator data format 0.776 https://www.ncei.noaa.gov/archive/accession/0156980 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/156980 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/156980 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0100/0156980/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0156980 v1.1 was published. 2016-11-29T19:37:10Z NCEI Accession 0156980 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0156980/1.1 HTTPS NCEI Accession 0156980 v1.1 published 2016-11-29T19:37:10Z download dataset Data Type: PHOSPHATE - TOTAL (measured); Units: micromole; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: Marine water quality monitoring from 1993 to 2007 followed the 1989 GK & Associates HOST and NELH Coorerative Environmental Monitoring Program report and incorporated the recommendations from the 1992 West Hawaii Coastal Monitoring Program Guidelines. The frequency of sampling is quarterly. The marine transects utilized a small boat.; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Nitrate NO3 (measured); Units: micromole; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: Marine water quality monitoring from 1993 to 2007 followed the 1989 GK & Associateds HOST and NELH Coorerative Environmental Monitoring Program report and incorporated the recommendations from the 1992 West Hawaii Coastal Monitoring Program Guidelines. The frequency of sampling is quarterly. The marine transects utilized a small boat.; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Ammonia NH3 (measured); Units: micromole; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Silicon, Si (measured); Units: micromole; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Thymidine diphosphate, TDP (measured); Units: micromole; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Trispyrazolylborate TP (measured); Units: micromole; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Trimethyl dihydronapthalene, TDN (measured); Units: micromole; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Total organic carbon, TOC (measured); Units: mgC/L; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: turbidity (measured); Units: NTU; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Salinity (measured); Units: psu; Observation Type: in situ; Sampling Instrument: A.G.E Model 2100 precision salinometer; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: TEMPERATURE - BOTTOM WATER [WATER TEMPERATURE] (measured); Units: degrees Celsius; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: pH (measured); Units: unit; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: DISSOLVED OXYGEN (measured); Units: ppm; Observation Type: in situ; Sampling Instrument: Winkler Titration; Sampling and Analyzing Method: Dissolved oxygen is measured using the Winkler Titration method, so the samples are preserved with a two chemical process immediately after the sample is taken.; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Chlorophyll-A (measured); Units: ug/L; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Fecal Coliform (measured); Units: Bacteria/100 ml; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured Data Type: Enterococci (measured); Units: Bacteria/100 ml; Observation Type: in situ; Sampling Instrument: YSI 556 multiprobe; Sampling and Analyzing Method: standard methods; Data Quality Information: Each data value is a separate sample that is corrected against the calibration of the machine it is run on. The instrumentation is calibrated against a set of standards that are either solutions formulated by our chemists or against a standard that comes in a sealed glass ampoule from a certified lab on the mainland or Europe. A set of samples (15-50) are run on the calibrated instrumentation (machines) over a period of about 2-8 hours depending on the parameter measured asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian multi-parameter water quality sensor multi-parameter water quality sensor used to measure temperature, salinity, dissolved oxygen, and other parameters Instrument used to measure temperature, salinity, dissolved oxygen, and other parameters, often used to measure water quality parameters. Can be a hand-held instrument or a sonde for unattended monitoring. Often used in coastal water monitoring stations. YSI is the preeminent brand (as of 2024). peristaltic pump peristaltic pump not an instrument - maybe an observation type pump sampler pump sampler generic name for instrument that pumps water from depth to be filtered through a sieve thermometer thermometer generic thermometer or reversing thermometer use thermometer when temperature is a data type, but the exact instrument used to measure temperature is unknown