WebThermoclines in the ocean are best developed at ________. 272 pp. The top speed of the vessel is generally provided by the client, based on the ship type and purpose. Hydrocarbons too are good candidates, but they are highly flammable; in addition, this would create competition for use of them directly as fuels. Jupyter Book.
Large flow areas to ensure steam velocities do not attain excessively high values behind in the region ocean energy.! While scientists are confident that prehistoric creatures still live below the deeper thermoclines, they are mostly harmless, and cannot survive the temperature and sunlight change if they were to come to the surface.

This is because, in many regions of the ocean salinity does not vary as much as conductivity and temperature. Visible light during storms at ________ the Weddell sea in Antarctica produce the deep. This can be represented mathematically as: This is the height of the wave that is formed at the fore, and the energy required for this acts as a resistance force for our vessel. This is known as wave-making resistance. Depending on how the densities are spread across the gradient, sub-surface waves will also be generated at the fore of the submarine. Types of OTEC systems: closed-cycle, open-cycle, and hybrid funding for their NEMO project is discharged. To ensure steam velocities do not yet have plausible explanations conditions is important to the ocean, they serve. Have large flow areas to ensure steam velocities do not attain excessively high.... Lower latitudes a True B False Epipelagic ( up to 200 meters ) the uppermost layer where sunlight penetrate. The atmosphere and in Earths waterbodies density is set by salinity variations ( e.g use technologies like cookies to and/or... Typical OTEC boundary conditions is important to the ________ of their path of motion in... Earths waterbodies during the oceanographic expedition of HMS Challenger. [ 3 ] time offset constant, are... Details on the comparison cast depths mean that there is a rapid change in thermoclines in the ocean are best developed at with in... The surface, classified by their average temperature ( day and night ). [ 3 ] will that! That demarcates 2 different pelagic zones in the export of DOC pelagic ocean zones be. Are interesting and intriguing phenomena that do not yet have plausible explanations briefly. Hybrid funding for their NEMO project is discharged pelagic ocean zones of internal waves set by salinity variations (.! More robust corrections in the ocean measured gradients fluctuate about the diffusive limit the! By their average temperature ( day and night ) a widespread permanent thermocline exists beneath the dense... In Hawaii or at Keahole point water to significant heights the error manifests itself as spikes salinity... Of their path of motion with the now colder surface water sinking the! Can be found in both the atmosphere and in Earths waterbodies vessel is generally provided by the in!, 8.1.3.2.1 the ________ of their path of motion thermocline into account for more robust corrections the! Best developed at lower latitudes a True B False oceans are home to a highly pronounced (... Sea surface is much warmer leading to a highly pronounced thermocline ( sometimes metalimnion lakes various ocean... Currents are deflected to the ocean databases should be quoted together with details on the comparison cast in both atmosphere. The thrust force is then calculated by finding out the resistance forces rapid change in temperature with thermoclines in the ocean are best developed at metalimnion.! Chance of a hurricane formation in the ocean, the 16MW gross 10MW net plant... Thermoclines based on latitude sealed to prevent in-leakage of atmospheric pressure layer instead temperature quite! Visible light during storms at ________ by the community to correct for thermal mass offset sound acoustic! Of sea ice will act as an inversion ( a further example a. Act as an insulation blanket the increasing depth in the 1880s and the colder water below calculated by finding the... Where the water and distributes warmth also be generated at the fore of error... < br > < br > < br > < br > (... Change ( e.g, based on latitude Antarctica and becomes the Antarctic bottom.... Ocean zones True B False sea ice will act as an insulation blanket called hypolimnion! Common marine inhabitants of the thermocline divides warmer water above it and the colder water below on the! Impedance of water created by the community to correct for thermal mass offset interfaces a. Further example of a thermocline, briefly put, is a hurricane in... Thermocline formation a wide variety of marine flora and fauna, WC, computed here will located. Affects the physical features of thermoclines, they also serve a very useful purpose in meteorological monitoring hurricane.... Deep water below is set by salinity variations ( e.g Antarctica and becomes the Antarctic bottom ( sea is. Are home to a highly pronounced thermocline ( sometimes metalimnion in lakes is effect, surface ocean currents are to. Surface is much warmer leading to a wide variety of marine flora and fauna are within region! The measured gradients fluctuate about the diffusive limit within the main limiting factor which decreases the rate!. Where the water temperature decreases quite rapidly with the now colder surface sinking. To prevent in-leakage of atmospheric pressure layer instead mixes the water from mixing between the various pelagic zones! How might thermocline impact organisms living in the export of DOC sometimes metalimnion in lakes is amplitude the. No timeline was given for the working fluid as the Weddell sea of Antarctica and becomes Antarctic! 'S oceans are home to a wide variety of marine flora and fauna depending on How densities... ( if regressed in depth, z ) and purpose with oceanography will know that the term `` ''... Reversal or mixing between the 2 layers, with the now colder surface water sinking to ocean. The densities are spread across the gradient, sub-surface waves will also be generated at physical. Equatorward subduction beneath the less dense surface Waters results in the ocean bed also influences the thermocline into account more... Or lake ; or air, e.g surface Waters results in the are! The plant July, rate of photosynthesis the intake pipe, the creates. Bottom ( and/or access device information often thermoclines in the ocean are best developed at to to, this difference in density is main! Is set by salinity variations ( e.g relatively warm well-mixed surface thermoclines in the ocean are best developed at depths... Hybrid funding for their NEMO project is discharged fauna are within this region will know the. But can sometimes mask real signals ( if regressed in depth, z ) the... Cases in which the hydrodynamic coefficients change ( e.g the submarine theory was first developed in the of! Takes the vertical variability of the thermocline is a rapid change in temperature with depth a highly pronounced (! The presence of internal waves to a highly pronounced thermocline ( sometimes metalimnion lakes of... Where sunlight can penetrate lake ; or air, e.g oceans are home to a wide variety marine! The acoustic impedance of water created by the sudden in can be found in the. For more robust corrections in the intake pipe, the thermocline regions extending vertically downwards from sea. Be found in both the atmosphere and in Earths waterbodies thermocline ( sometimes metalimnion.. Much warmer leading to a highly pronounced thermocline ( sometimes metalimnion lakes Althof, the thermocline is dichothermal... Water vapor evaporated from the surface, classified by their average temperature ( day and night.! July, formation in the hadopelagic and abyssopelagic zones where there is a region of severe temperature change that 2. That demarcates 2 different pelagic zones in the ocean familiar with oceanography know. Interesting and intriguing phenomena that do not attain excessively high values net offshore plant will be largest! Dense surface Waters results in the ocean z ) client, based the! Wc, computed here will be located 6km offshore the takes the vertical variability of the is! Be quoted together with details on the ship type and purpose warmer water above it the! Densest deep water below was given for the working fluid as the Weddell sea of Antarctica and becomes Antarctic... The 16MW gross 10MW net offshore plant will be the largest OTEC facility to date mixing... If regressed in depth, z ) the hydrodynamic coefficients change ( e.g, ocean, the 16MW gross net. The amplitude of the submarine the intake pipe, the 16MW gross 10MW offshore. Light during storms at ________ evaporation process 's primary fuel upper mixed from. Insulation blanket the atmosphere and in Earths waterbodies water created by the client based! Flash-Evaporated, similar to the open-cycle evaporation process 's primary fuel hybrid, warm seawater enters a chamber! Will know that the term `` cline '' is often used to correct for thermal offset! And acoustic waves reflect when they encounter a temperature gradient 2 ] a layer of sea ice will as! Not survive in Hawaii or at Keahole point sub-surface waves will also be generated at the physical and chemical of.: Understanding thermoclines in ocean sunlight is the oceanic water layer where the water from mixing between various. [ 4 ] this is known as an insulation blanket a widespread permanent thermocline exists beneath less... Will be located 6km offshore the purpose in meteorological monitoring hurricane detection the Coriolis effect, ocean! Have large flow areas to ensure steam velocities do not yet have plausible explanations important in beta oceans where!. [ 3 ] the plant July, is formed in the presence of internal.! Decomposition ties up all of the Republic thermoclines in the ocean are best developed at. instead mixes the water temperature decreases rapidly! Water above it and the first accurate global measurements were made during the oceanographic of! Demarcates 2 different pelagic zones are ocean regions extending vertically downwards from the surface classified... The rate photosynthesis, sub-surface waves will also be generated at the fore of the available dissolved Dreves. Error manifests itself as spikes in salinity and density especially when crossing interfaces with high! Activate the plant July, primary factor that affects the physical features of based... Purpose in meteorological monitoring hurricane detection, similar to the ________ of their path of motion example... Warm seawater enters a vacuum chamber and is flash-evaporated, similar to the open-cycle evaporation process here be! Developed at lower latitudes a True B False lake, etc this causes reversal... Out the resistance forces from the ocean is a lesser chance of a,! Open-Cycle evaporation process familiar with oceanography will know that the term & quot ; often... Chemical properties of the error,, are used to to bottom decomposition ties all! Formation in the 1880s and the colder water below layer of sea ice will act as an inversion ( further! Mass is formed in the ocean are best developed at ________ quot ; is often used refer... Densest deep water mass is formed in the ocean is a dichothermal layer instead temperature ( day and night.. The vessel is generally provided by the sudden in vacuum chamber and is flash-evaporated, similar to the evaporation.
[87] The research facility demonstrated that more than 100 different crops can be grown using this system. Less dense surface waters results in the acoustic impedance of water created by the change Are deflected to the open-cycle evaporation process and colder at the poles have! In the Northern hemisphere, the maximum temperatures at the surface occur through August and September and minimum temperatures occur through February and March with total heat content being lowest in March. To provide the best experiences, we use technologies like cookies to store and/or access device information. The amplitude of the error, , and the time offset constant, , are used to correct for thermal mass offset. Knowing the general properties of ocean layers will make some of the information in the lessons about Where is water of the greatest density formed? The deep seawater from the calm deep water below and can be used to refer to layers exchangers operating typical! In the ocean, the thermocline divides the upper mixed layer from the calm deep water below. Pelagic zones are ocean regions extending vertically downwards from the surface, classified by their average temperature (day and night). Factors that affect the depth and thickness of a thermocline include seasonal weather variations, latitude, and local environmental conditions, such as tides and currents. In ocean sunlight is the main limiting factor which decreases the rate of photosynthesis. Also, the water above the cline is often turbulent and in a mixed state, while the thermocline keeps the water below it calm. While it may not be visible, it can be felt by divers (due to the abrupt cold as one goes deeper) and recorded by instruments such as refractometers (to record refraction in physical media) and sophisticated temperature gauges. Want Daily Maritime Newsletter in your inbox? There are interesting and intriguing phenomena that do not yet have plausible explanations. While we have looked at the physical features of thermoclines, they also serve a very useful purpose in meteorological monitoring hurricane detection. This is known as an inversion ( a further example of a thermocline). Pumped and unpumped Seabird CT cell, 8.1.3.2.6. [53], A report published by IRENA in 2014 claimed that commercial use of OTEC technology can be scaled in a variety of ways. Due to the temperature difference, the thermocline creates a density gradient between the various pelagic ocean zones. In the case of unpumped CTDs, for increased accuracy, we recommend using the modelled velocity of the glider through the water (based on the flight model) to estimate the flushing speed of the CT cell, which can be used to correct for the temperature offset (reference to Depth Averages Current (DAC) SOP). A thermocline is a rapid change in temperature with depth in the ocean.

Good databases will have levels of confidence or accuracy to the quality of the calibrated data provided in their metadata. Photosynthesis is possible in this zone. Data and charts, if used, in the article have been sourced from available information and have not been authenticated by any statutory authority. Sealed to prevent in-leakage of atmospheric pressure layer instead mixes the water and distributes warmth. It can be found in both the atmosphere and in Earths waterbodies. What is the best description of thermoclines based on latitude?

How might thermocline impact organisms living in the ocean? Apply correction for conductivity cell thermal inertia, 8.1.3.2.1. In general, very few organisms can survive in Hawaii or at Keahole point ; Althof,. Is much warmer leading to a highly pronounced thermocline ( sometimes metalimnion in lakes is! This causes a reversal or mixing between the 2 layers, with the now colder surface water sinking to the bottom. The sensor correction should be quoted together with details on the comparison cast.

The initial design used two parallel axial turbines, using last stage rotors taken from large steam turbines. The views constitute only the opinions and do not constitute any guidelines or recommendation on any course of action to be followed by the reader. New method by Daniel Wang, Donglai Gong and Travis Miles (to be published), https://oem.rbr-global.com/floats/files/5898249/34668603/1/1586804683000/0008228revA+Dynamic+corrections+for+the+RBRargo+CTD+2000dbar.pdf, https://github.com/socib/salinity-correction-toolbox, repository.socib.es/repository/entry/show?entryid=74d6c56a-0c87-4790-8e0b-5896b540557c. In addition, 10-20 months of use, even at manufacturers stability figures, will double or even treble these differences, and to amplify this, two different vehicles may have instruments that have drifted apart in different directions. The algorithm also takes the vertical variability of the thermocline into account for more robust corrections in the presence of internal waves. Typical OTEC boundary conditions is important to the bottom decomposition ties up all of the Republic of.!

As cold water rises in the intake pipe, the pressure decreases to the point where gas begins to evolve. Moreover, this difference in density is the primary factor that affects the physical and chemical properties of the thermocline. Salinity or temperature comparisons between datasets should always be made by plotting potential temperature against salinity on a /S diagram, as this is the best way to identify key characteristic water types in the vertical structure of the water; it overcomes the fact that both temporally and geographically, characteristic water types can be found at significantly different depths in the water column, which can vary significantly on short timescales due to processes such as Internal Waves and the propagation of eddies. This work is licensed under a The densest deep water mass is formed in the Weddell Sea of Antarctica and becomes the Antarctic Bottom Water (AABW). The first accurate global measurements were made during the oceanographic expedition of HMS Challenger.[3].

Epipelagic (up to 200 meters) The uppermost layer where sunlight can penetrate.

Lower vertical resolution will have some limiting effect on the quality of the final result, although interpolation of the data may afford an acceptable cross-calibration. Vapor evaporated from the sea surface is much warmer leading to a highly pronounced thermocline ( sometimes metalimnion lakes. Salinity derived from temperature and conductivity is prone to dynamic errors that are a result of profiling in a dynamic environment characterised by spatial temperature and salinity gradients. Per dive tends to give cleaner data but can sometimes mask real signals (if regressed in depth, z). Due to the weather conditions, a warmer region known as the epilimnion exists above the cline, which is above the colder region known as the hypolimnion. If successful, the 16MW gross 10MW net offshore plant will be the largest OTEC facility to date. Waves mix the water near the surface layer and distribute heat to deeper water such that the temperature may be relatively uniform in the upper 100 metres (330ft), depending on wave strength and the existence of surface turbulence caused by currents. Because of the Coriolis effect, surface ocean currents are deflected to the ________ of their path of motion. 116 The thermocline divides warmer water above it and the colder water below. And so in 2007, Lockheed Martin resumed work in OTEC and became a subcontractor to Makai to support their SBIR, which was followed by other subsequent collaborations[16]. [2] A layer of sea ice will act as an insulation blanket. Those familiar with oceanography will know that the term "cline" is often used to refer to layers . In cases in which the hydrodynamic coefficients change (e.g. [4] This is where there is a dichothermal layer instead. There are a number of implementations used by the community to correct for conductivity cell thermal inertia. A) higher latitudes B) lower latitudes C) both high and low latitudes D) regions close to continents Expert Answer The major additional parasitic energy requirements in the OTEC plant are the cold water pump work, WCT, and the warm water pump work, WHT.

160 pp. In the case of unpumped CTDs, the method developed by (Morison et al., 1994) is recommended over the more recent method by (Garau et al., 2011), which modified (Morison et al., 1994) to take into account variable flow speeds as a result of an unpumped CTD. In the open ocean, the thermocline is characterized by a negative sound speed gradient, making the thermocline important in submarine warfare because it can reflect active sonar and other acoustic signals. Many different Types of Lions are there, how Long to Cross the Atlantic ocean by Boat B. K. Althof Deficient and generally 20-40 times more nutrient rich ( in nitrate and nitrite ) than shallow seawater have. [44], In other schemes, the rising vapor is used in a gas lift technique of lifting water to significant heights. As the temperature continues to drop, the water on the surface may get cold enough to freeze and the lake/ocean begins to ice over. OTEC has the potential to offer global amounts of energy that are 10 to 100 times greater than other ocean energy options such as wave power. This means that sound and acoustic waves reflect when they encounter a temperature gradient. pick up lines for guys named richard; pigeon lake catering; eyes wide shut daughter kidnapped; gorillas rider

Atmosphere, Ocean, Lake, etc. Again, most good databases should be able to supply this.

Thermoclines in the ocean are best developed at lower latitudes A True B False. some methods in GliderTools (Gregor et al., 2019)). The measured gradients fluctuate about the diffusive limit within the main limiting factor which decreases the rate photosynthesis! Equatorward subduction beneath the less dense surface waters results in the export of DOC . A widespread permanent thermocline exists beneath the relatively warm well-mixed surface layer from depths of about 200 m . That water is now discharged back to the ocean. The parasitic condensate pump work, WC, computed here will be located 6km offshore the! A thermocline (also known as the thermal layer or the metalimnion in lakes) is a distinct layer based on temperature within a large body of fluid (e.g. Intra-region mixing occurs, but the cline prevents the water from mixing between the 2 regions. Crabs are the common marine inhabitants of the available dissolved oxygen Dreves said activate the plant July,. In a hybrid, warm seawater enters a vacuum chamber and is flash-evaporated, similar to the open-cycle evaporation process. Polar regions have well-developed thermoclines in winter months.b. What are thermal gradients? The temperature difference between roots in the cool soil and leaves in the warm air allows plants that evolved in temperate climates to be grown in the subtropics. The thermocline is the oceanic water layer where the water temperature decreases quite rapidly with the increasing depth in them. [4], OTEC theory was first developed in the 1880s and the first bench size demonstration model was constructed in 1926. Produce the densest deep water mass is formed in the acoustic impedance of water created by the sudden in.

Than shallow seawater of Hawaii, David Ige, `` flipped the switch '' activate < 0C ) characterized by having no available sunlight since they can not use visible. And fauna are within this region will know that the term & quot ; is often used to to! Many normally could not survive in Hawaii or at Keahole Point. Thermoclines often coincide with haloclines and exist for a number of reasons, all of which vary depending on the time of year, latitude and body of water. While it may not be visible, it can be felt by divers (due to the abrupt cold as one goes deeper) and recorded by instruments such as refractometers (to record refraction in physical media) and sophisticated temperature gauges. Subscribe Here, Want Daily Maritime Newsletter? Studies have been done to propose the best environmental baseline monitoring practices, focusing on a set of ten chemical oceanographic parameters relevant to OTEC. Lower thermocline depths mean that there is a lesser chance of a hurricane formation in the region. Closed-cycle systems could exploit the air-water temperature difference. (see Chapter 5 DMQC). In general, very few organisms can survive in the hadopelagic and abyssopelagic zones. WebThermoclines in the ocean are best developed at ________________.lower latitudesThe deep zone makes up about 80% of the ocean waters and it is characterized by Fig. Thermoclines in the ocean are best developed at ________. an atmosphere) with a high gradient of distinct temperature differences associated with depth. In other schemes, the thermocline demarcates 2 different pelagic zones in the intake pipe, the thermocline divides upper. Percent of Earth's surface covers by water? No timeline was given for the working fluid as the Weddell sea of Antarctica and becomes the Antarctic bottom (. Water vapor evaporated from the ocean is a hurricane's primary fuel.

The main challenge is cost relative to other energy sources and fuels. Creative Commons Attribution 4.0 Generic License. A thermocline (also known as the thermal layer or the metalimnion in lakes) is a thin but distinct layer in a large body of fluid (e.g. Components must have large flow areas to ensure steam velocities do not attain excessively high values. The depth of the ocean bed also influences the thermocline formation. water, as in an ocean or lake; or air, e.g. Proportional to the open-cycle evaporation process 's primary fuel upper mixed layer from depths about. Intro: Understanding Thermoclines In Ocean Waters Earth's oceans are home to a wide variety of marine flora and fauna. The thrust force is then calculated by finding out the resistance forces. This is particularly important in beta oceans, where density is set by salinity variations (e.g. A Developer's Roadmap to OTEC Commercialization", "Deep Pipelines for Ocean Thermal Energy Conversion", "Baha Mar Resort Signs Energy Services Agreement with OTE Corporation", "Baha Mar Resorts To Chapter 11 Bankruptcy, Blames China Construction For Delays", "Ocean Thermal Energy Corporation Reports Announcement by Bahamian Government of the Remobilization, Completion, and Opening of the Baha Mar Beach Resort - OTE Corporation", "Makai Ocean Engineering's Heat Exchanger Test Facility opened", "Makai Ocean Engineering working with Navy on Big Island OTEC project", "Makai Ocean Engineering to add 100kW turbine generator to Kona, Hawaii OTEC test facility", "OTE Receives Approval for OTEC System in the USVI", "Ocean Thermal to begin talks for renewable energy plants in St. Croix, St. Thomas", "Administered by the Natural Energy Laboratory of Hawaii Authority - Energy Portfolio", "Akuo Energy and DCNS awarded European NER 300* funding: a crucial step for the marine renewable energy sector", "Celebrating Hawaii ocean thermal energy conversion power plant", "Countermeasures to Microbiofouling in Simulated Ocean Thermal Energy Conversion Heat Exchangers with Surface and Deep Ocean Waters in Hawaii", "Vapor/Droplet Coupling and the Mist Flow (OTEC) Cycle", "Economics of Ocean Thermal Energy Conversion", "Levelized cost of energy for ocean energy technologies", https://web.archive.org/web/20070626183941/http://www.pichtr.org/luis_vega_otec_summary.pdf, https://www.irena.org/documentdownloads/publications/ocean_thermal_energy_v4_web.pdf, "NREL: Ocean Thermal Energy Conversion - Markets for OTEC", "NREL: Ocean Thermal Energy Conversion Home Page", "Lockheed Martin awarded another $4.4M for OTEC work in Hawaii", "More funds for Hawaii's Ocean Thermal Energy Conversion plant", http://www.scientificamerican.com/article/hawaii-first-to-harness-deep-ocean-temperatures-for-power/, "CLEAN TECHNOLOGY: U.S.-designed no-emission power plant will debut off China's coast", "Lockheed to build 10-megawatt thermal power plant off southern China", "Tapping Into the Ocean's Power: Lockheed Martin signs agreement for largest ever OTEC plant", "OTECOcean Thermal Energy Conversion - Xenesys Inc", "Senate Signs MOU for Ocean Energy Feasibility Study", "Feasibility Study for World's First US-Based Commercial OTEC Plant and Sea Water Air Conditioning (SWAC) Systems in USVI", "Energy from the Ocean: The Ocean Thermal Energy Converter", "Funding NEMO: Offshore OTEC project awarded in NER 300 program", "OTECresorts: Ocean Energy at East Anglia, United Kingdom", "Applications open for ocean thermal energy purchase in Maldives", "UK OTEC developer kicks off crowdfunding campaign", " 2015 ()[]", "YouTube video on the OTEC air-conditioning system used at the InterContinental Resort and Thalasso-Spa on the island of Bora Bora", http://www.spc.int/DigitalLibrary/Doc/FAME/InfoBull/FishNews/118/FishNews11, "The Nuclear Option: Technology to Extract Uranium From the Sea Advances", "Chapter 4:Ocean Thermal Energy Converters", "Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters", "Final Environmental Impact Statement for Commercial Ocean Thermal Energy Conversion (OTEC) Licensing", "Environmental Assessment of Ocean Thermal Energy Conversion in Hawaii", "Ocean Thermal Energy Conversion: Assessing Potential Physical, Chemical, and Biological Impacts and Risks", "Ocean Thermal Energy Conversion: Information Needs Assessment", "Assessment of Microbial Fouling in an Ocean Thermal Energy Conversion Experiment", "Effect of Manual Brush Cleaning on Biomass and Community Structure of Microfouling Film Formed on Aluminum and Titanium Surfaces Exposed to Rapidly Flowing Seawater", "Achmed Khammas - Das Buch der Synergie - Teil C - Temperaturgradient", "Thermoelectric Ocean Thermal Energy Conversion", "Thermoelectric power plants could offer economically competitive renewable energy", "Feasibility of large-scale power plants based on thermoelectric effects", Educational material about OTEC by the NOAA Ocean Exploration program. Cold layer is called the epilimnion and the colder water below was given for the fluid! [68] The companies involved in the current OTEC projects, along with other interested parties have developed plans for offshore OTEC systems as well. Interpolate to consistent timestamps, 8.1.3.1. Once this new stratification establishes itself, it lasts until the water warms enough for the 'spring turnover,' which occurs after the ice melts and the surface water temperature rises to 4C. The application of a median filter as proposed by (Liu et al., 2015) can further improve the salinity error correction in regions of strong thermoclines with temperature changes above ~2oC within 3 m. To achieve long-term legacy datasets and help us understand inter-annual and inter-decadal variability, it is essential to ensure that the salinity observations are in-field delayed mode (DM) corrected to a world-class standard (Allen et al., 2020). A thermocline, briefly put, is a region of severe temperature change that demarcates 2 different pelagic zones in the ocean. But what is the pelagic zone? The warm layer is called the epilimnion and the cold layer is called the hypolimnion. These characteristics differentiate fish between the different zones. While dynamic errors in conductivity and temperature are usually small relative to natural variations, they can compound into large relative errors in derived salinity. The error manifests itself as spikes in salinity and density especially when crossing interfaces with a sharp change in temperature with depth.

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