West End CP Mooring thermistor, CTD, and ADCP Data near Mobile Bay, Alabama from 2004-10-20 to 2018-12-12 (NCEI Accession 0203749)
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DateTime: 2023-08-30T13:09:53Z
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title: West End CP Mooring thermistor, CTD, and ADCP Data near Mobile Bay, Alabama from 2004-10-20 to 2018-12-12 (NCEI Accession 0203749)
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date: 2019-10-01
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abstract: A continuous time series of temperature, salinity, depth, and current velocity data collected from 2004 to present from a small coastal ocean observing system 25 kilometers southwest of the mouth of Mobile Bay, Alabama (30.0902 degrees N, 88.2116 degrees W). Data sources include a bottom mounted ADCP, a thermistor chain, and a surface and bottom CTD.
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otherConstraints: Cite as: Coogan, Jeff; Dzwonkowski, Brian; Park, Kyeong; Lockridge, Grant (2019). West End CP Mooring thermistor, CTD, and ADCP Data near Mobile Bay, Alabama from 2004-10-20 to 2018-12-12 (NCEI Accession 0203749). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/zzw6-3q06. Accessed [date].
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useLimitation: 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.
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beginPosition: 2004-10-20
endPosition: 2018-12-12
supplementalInformation: Submission Package ID: 40TFUH In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number.
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description: Parameter or Variable: SALINITY (measured); Units: psu; Observation Category: in situ; Sampling Instrument: CTD - moored CTD.
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description: Parameter or Variable: TEMPERATURE - WATER [WATER TEMPERATURE] (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: thermistor.
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description: Parameter or Variable: TEMPERATURE - WATER [WATER TEMPERATURE] (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: CTD - moored CTD.
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description: Parameter or Variable: DEPTH - SENSOR (measured); Units: meter; Observation Category: in situ; Sampling Instrument: CTD - moored CTD.
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acquisitionInformation: (MI_AcquisitionInformation)
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code: ADCP
type: ADCP
description: Acoustic Doppler Current Profiler The Acoustic Doppler Current Profiler (ADCP) measures currents beneath a ship while underway. Sound signals sent from the moving ship bounce back to receivers aboard the ship. This provides a profile of water movement relative to the ship-precise modern navigation, allowing the ship's motion to be subtracted from the data. These devices are also used on moorings and profilers and, along with acoustic backscattering, measure animal biomass. Particles in the path of the sound waves, mostly plankton, reflect a small part of the sound energy back toward receivers, allowing researchers to make remote estimates of the sizes and numbers of animals present in the water column. Before the 1970's, the most technologically advanced instrument used to measure water velocity was known as a Doppler speed log. This evolved into the first commercial ADCP, produced in the mid-1970's, which used averaging. Later in the 1970's, the first vessel-mounted ADCP was developed to measure water velocity more accurately and to allow measurement in range cells over a depth profile. As instruments evolved, so did new techniques in Doppler signal processing. Initially, Doppler speed logs used simple analog signal processing methods, which are still used in some commercial speed logs today. However, the first ADCPs incorporated analog-to-digital signal conversion over a narrow communication bandwidth. Around 1990, this technique was developed into broadband signal processing. Since then, broadband ADCPs have been able to generate very accurate, real-time velocity measurements.
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code: thermistor
type: thermistor
description: electronic temperature sensor thermally sensitive resistor
