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  • 1
    Keywords: Forschungsbericht ; Küstenmeer ; Binnengewässer ; Satellitenfernerkundung ; Auswertung
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (21 Seiten, 3,51 MB) , Illustrationen, Diagramme
    Language: German
    Note: Förderkennzeichen BMWi 50EE1718 , Weiteren Autor dem Berichtsblatt der Druck-Ausgabe entnommen , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 2
    Publication Date: 2020-06-26
    Description: Chlorophyll (chl a) concentration in coastal seas exhibits variability on various spatial and temporal scales. Resuspension of particulate matter can somewhat limit algal growth, but can also enhance productivity because of the intrusion of nutrient-rich pore water from sediments or bottom water layers into the whole water column. This study investigates whether characteristic changes in net phytoplankton growth can be directly linked to resuspension events within the German Bight. Satellite-derived chl a were used to derive spatial patterns of net rates of chl a increase/decrease (NR) in 2003 and 2004. Spatial correlations between NR and mean water column irradiance were analysed. High correlations in space and time were found in most areas of the German Bight (R2 〉 0.4), suggesting a tight coupling between light availability and algal growth during spring. These correlations were reduced within a distinct zone in the transition between shallow coastal areas and deeper offshore waters. In summer and autumn, a mismatch was found between phytoplankton blooms (chl a 〉 6 mg m−3) and spring-tidal induced resuspension events as indicated by bottom velocity, suggesting that there is no phytoplankton resuspension during spring tides. It is instead proposed here that frequent and recurrent spring-tidal resuspension events enhance algal growth by supplying remineralized nutrients. This hypothesis is corroborated by a lag correlation analysis between resuspension events and in-situ measured nutrient concentrations. This study outlines seasonally different patterns in phytoplankton productivity in response to variations in resuspension, which can serve as a reference for modelling coastal ecosystem dynamics.
    Type: Article , PeerReviewed
    Format: text
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  • 3
    Publication Date: 2022-01-31
    Description: A central aspect of coastal biogeochemistry is to determine how nutrients, lithogenic- and organic matter are distributed and transformed within coastal and estuarine environments. Analyses of the spatio-temporal changes of total suspended matter (TSM) concentration indicate strong and variable linkages between intertidal fringes and pelagic regions. In particular, knowledge about the organic fraction of TSM provides insight to how biogenic and lithogenic particulate matter are distributed in suspension. In our study we take advantage of a set of over 3000 in situ Loss on Ignition (LoI) data from the Southern North Sea that represent fractions of particulate organic matter (POM) relative to TSM (LoI $\equiv$ POM:TSM). We introduce a parameterization (POM-TSM model) that distinguishes between two POM fractions incorporated in TSM. One fraction is described in association with mineral particles. The other represents a seasonally varying fresh pool of POM. The performance of the POM-TSM model is tested against data derived from MERIS/ENVISAT-TSM products of the German Bight. Our analysis of remote sensing data exhibits specific qualitative features of TSM that can be attributed to distinct coastal zones. Most interestingly, a transition zone between the Wadden Sea and seasonally stratified regions of the Southern North Sea is identified where mineral associated POM appears in concentrations comparable to those of freshly produced POM. We will discuss how this transition is indicative for a zone of effective particle interaction and sedimentation.The dimension of this transition zone varies between seasons and with location. Our proposed POM-TSM model is generic and can be calibrated against in situ data of other coastal regions.
    Type: Article , PeerReviewed
    Format: text
    Format: text
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  • 4
    Publication Date: 2018-10-29
    Description: Given that the commonly used parameter obtained directly from hyperspectral earth observation sensors is the remote sensing reflectance (Rrs), we focused on identification of dominant phytoplankton groups by using Rrs spectra directly. Based on five standard absorption spectra representing five different phytoplankton spectral groups, a simulated database of Rrs (C2X database, compiled within the ESA SEOM C2X Project) that includes 105 different water optical conditions was built with HydroLight. In our previous study we have proposed an identification approach to determine phytoplankton groups with the use of simulated C2X data, and the skill of the identification were also tested by investigating how and to what extend water optical constituents (Chl, NAP, and CDOM) impact the accuracy of this identification (Xi et al. 2017). To furthermore test whether the approach is applicable in various natural waters, we have collected a large set of in situ data from waters with different optical types, including coastal waters such as the German Bight and British coastal waters, and inland waters such as Elbe River and several lakes in Germany. Both in situ Rrs and absorption spectra (ap) are used to identify the dominating phytoplankton group in these waters. Identification results from both approaches are compared, and the identification performance of the Rrs-based approach can therefore be evaluated for natural water applications.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
    Format: application/pdf
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  • 5
    Publication Date: 2019-05-17
    Description: The Coastal Observing System for Northern and Arctic Seas (COSYNA) was established in order to better understand the complex interdisciplinary processes of northern seas and the Arctic coasts in a changing environment. Particular focus is given to the German Bight in the North Sea as a prime example of a heavily used coastal area, and Svalbard as an example of an Arctic coast that is under strong pressure due to global change. The COSYNA automated observing and modelling system is designed to monitor real-time conditions and provide short-term forecasts, data, and data products to help assess the impact of anthropogenically induced change. Observations are carried out by combining satellite and radar remote sensing with various in situ platforms. Novel sensors, instruments, and algorithms are developed to further improve the understanding of the interdisciplinary interactions between physics, biogeochemistry, and the ecology of coastal seas. New modelling and data assimilation techniques are used to integrate observations and models in a quasi-operational system providing descriptions and forecasts of key hydrographic variables. Data and data products are publicly available free of charge and in real time. They are used by multiple interest groups in science, agencies, politics, industry, and the public.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 6
    Publication Date: 2022-05-25
    Description: © The Author(s), 2019. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Sathyendranath, S., Brewin, R. J. W., Brockmann, C., Brotas, V., Calton, B., Chuprin, A., Cipollini, P., Couto, A. B., Dingle, J., Doerffer, R., Donlon, C., Dowell, M., Farman, A., Grant, M., Groom, S., Horseman, A., Jackson, T., Krasemann, H., Lavender, S., Martinez-Vicente, V., Mazeran, C., Melin, F., Moore, T. S., Muller, D., Regner, P., Roy, S., Steele, C. J., Steinmetz, F., Swinton, J., Taberner, M., Thompson, A., Valente, A., Zuhlke, M., Brando, V. E., Feng, H., Feldman, G., Franz, B. A., Frouin, R., Gould, R. W., Hooker, S. B., Kahru, M., Kratzer, S., Mitchell, B. G., Muller-Karger, F. E., Sosik, H. M., Voss, K. J., Werdell, J., & Platt, T. An ocean-colour time series for use in climate studies: The experience of the ocean-colour climate change initiative (OC-CCI). Sensors, 19(19), (2019): 4285, doi: 10.3390/s19194285.
    Description: Ocean colour is recognised as an Essential Climate Variable (ECV) by the Global Climate Observing System (GCOS); and spectrally-resolved water-leaving radiances (or remote-sensing reflectances) in the visible domain, and chlorophyll-a concentration are identified as required ECV products. Time series of the products at the global scale and at high spatial resolution, derived from ocean-colour data, are key to studying the dynamics of phytoplankton at seasonal and inter-annual scales; their role in marine biogeochemistry; the global carbon cycle; the modulation of how phytoplankton distribute solar-induced heat in the upper layers of the ocean; and the response of the marine ecosystem to climate variability and change. However, generating a long time series of these products from ocean-colour data is not a trivial task: algorithms that are best suited for climate studies have to be selected from a number that are available for atmospheric correction of the satellite signal and for retrieval of chlorophyll-a concentration; since satellites have a finite life span, data from multiple sensors have to be merged to create a single time series, and any uncorrected inter-sensor biases could introduce artefacts in the series, e.g., different sensors monitor radiances at different wavebands such that producing a consistent time series of reflectances is not straightforward. Another requirement is that the products have to be validated against in situ observations. Furthermore, the uncertainties in the products have to be quantified, ideally on a pixel-by-pixel basis, to facilitate applications and interpretations that are consistent with the quality of the data. This paper outlines an approach that was adopted for generating an ocean-colour time series for climate studies, using data from the MERIS (MEdium spectral Resolution Imaging Spectrometer) sensor of the European Space Agency; the SeaWiFS (Sea-viewing Wide-Field-of-view Sensor) and MODIS-Aqua (Moderate-resolution Imaging Spectroradiometer-Aqua) sensors from the National Aeronautics and Space Administration (USA); and VIIRS (Visible and Infrared Imaging Radiometer Suite) from the National Oceanic and Atmospheric Administration (USA). The time series now covers the period from late 1997 to end of 2018. To ensure that the products meet, as well as possible, the requirements of the user community, marine-ecosystem modellers, and remote-sensing scientists were consulted at the outset on their immediate and longer-term requirements as well as on their expectations of ocean-colour data for use in climate research. Taking the user requirements into account, a series of objective criteria were established, against which available algorithms for processing ocean-colour data were evaluated and ranked. The algorithms that performed best with respect to the climate user requirements were selected to process data from the satellite sensors. Remote-sensing reflectance data from MODIS-Aqua, MERIS, and VIIRS were band-shifted to match the wavebands of SeaWiFS. Overlapping data were used to correct for mean biases between sensors at every pixel. The remote-sensing reflectance data derived from the sensors were merged, and the selected in-water algorithm was applied to the merged data to generate maps of chlorophyll concentration, inherent optical properties at SeaWiFS wavelengths, and the diffuse attenuation coefficient at 490 nm. The merged products were validated against in situ observations. The uncertainties established on the basis of comparisons with in situ data were combined with an optical classification of the remote-sensing reflectance data using a fuzzy-logic approach, and were used to generate uncertainties (root mean square difference and bias) for each product at each pixel.
    Description: This work was funded by the Ocean Colour Climate Change initiative of the European Space Agency (Grant Number 4000101437/10/I-LG). We acknowledge additional funding support by NERC through the National Centre for Earth Observation (Grant Number PR140015). Additional funding from a Simons Foundation Grant (549947, SS) is also gratefully acknowledged. V.B. also acknowledges funding from the European Union’s Horizon 2020 Research and Innovation Programme grant agreement N_ 810139: Project Portugal Twinning for Innovation and Excellence in Marine Science and Earth Observation – PORTWIMS.
    Keywords: ocean colour ; water-leaving radiance ; remote-sensing reflectance ; phytoplankton ; chlorophyll-a ; inherent optical properties ; Climate Change Initiative ; optical water classes ; Essential Climate Variable ; uncertainty characterisation
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 7
    Publication Date: 2022-09-29
    Description: A critical step for obtaining accurate retrievals of ocean colour remote sensing over waters from hyperspectral imagery is an effective atmospheric correction. Opposed to multispectral imagery, atmospheric scattering and absorbers have to be considered differently at the various spectral bands. Another challenge is the low signal of most water surfaces, which makes the atmospheric correction a crucial task to derive for the hyperspectral satellite mission EnMAP (Environmental Mapping and Analysis Program), with its expected signal-to-noise ratio, reliable water leaving reflectance measurements. The major goal of this project, ACENMAP, is to develop an efficient atmospheric correction over water with defined uncertainties. With simulated data by the coupled atmosphere-ocean radiative transfer model (RTM) SCIATRAN, atmospheric absorbing and scattering effects on TOA reflectance can be precisely located and accounted for in the correction scheme, as well as other effects as glint and due to the proximity to the coast (e.g. mixed land-water pixels). These simulations will also be used to develop a correction scheme for these effects, as well as for estimating water leaving reflectance from TOA reflectance data. The uncertainty will be derived from RTM simulations, intercomparison and validation with in situ water leaving reflectance and satellite TOA reflectance from multispectral sensors (e.g. MERIS). The developed algorithm will be tested on HICO and SCIAMACHY data (downscaled to EnMAP spectral resolution but keeping the spatial resolution) before EnMAP operation. After verification, the atmospheric correction scheme allowing the retrieval of water leaving reflectance will be implemented into the EnMAP box.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 8
    Publication Date: 2024-05-11
    Description: A regional data set of water constituent concentrations and inherent optical properties (light absorption and scattering coefficient) for the German Bight and adjacent waters (River Elbe, North Sea, UK waters, and Southern Norwegian Sea) is presented. The data provide high quality results of in situ measurements and laboratory analysis of samples taken at sea, mainly from the mixed layer, during the years 2008 to 2021. Parameters of the water constituents include concentrations of chlorophyll a, particulate organic and dissolved organic carbon (POC, DOC), total suspended matter (TSM), organic suspended matter (OSM) together with water depth, temperature, salinity, and turbidity. Inherent optical properties (IOPs) are given spectrally as light attenuation, scattering and absorption coefficients. This includes coefficients of light attenuation by all non-water matter (cgp) and particulate matter alone (cp), light absorption by all non-water matter (agp), particulate (ap) and dissolved matter (Gelbstoff, ag), non-algal matter (anap) and phytoplankton (aph), and total scattering (bp) and backscattering (bbp) by particulate matter. The combination of concentrations and IOPS is used to determine specific IOPs of German Bight water and in optical modelling of coastal waters to interpret surface reflectance spectra like in satellite remote sensing approaches.
    Keywords: Attenuation coefficient, 400 nm; Attenuation coefficient, 402 nm; Attenuation coefficient, 404 nm; Attenuation coefficient, 406 nm; Attenuation coefficient, 408 nm; Attenuation coefficient, 410 nm; Attenuation coefficient, 412 nm; Attenuation coefficient, 414 nm; Attenuation coefficient, 416 nm; Attenuation coefficient, 418 nm; Attenuation coefficient, 420 nm; Attenuation coefficient, 422 nm; Attenuation coefficient, 424 nm; Attenuation coefficient, 426 nm; Attenuation coefficient, 428 nm; Attenuation coefficient, 430 nm; Attenuation coefficient, 432 nm; Attenuation coefficient, 434 nm; Attenuation coefficient, 436 nm; Attenuation coefficient, 438 nm; Attenuation coefficient, 440 nm; Attenuation coefficient, 442 nm; Attenuation coefficient, 444 nm; Attenuation coefficient, 446 nm; Attenuation coefficient, 448 nm; Attenuation coefficient, 450 nm; Attenuation coefficient, 452 nm; Attenuation coefficient, 454 nm; Attenuation coefficient, 456 nm; Attenuation coefficient, 458 nm; Attenuation coefficient, 460 nm; Attenuation coefficient, 462 nm; Attenuation coefficient, 464 nm; Attenuation coefficient, 466 nm; Attenuation coefficient, 468 nm; Attenuation coefficient, 470 nm; Attenuation coefficient, 472 nm; Attenuation coefficient, 474 nm; Attenuation coefficient, 476 nm; Attenuation coefficient, 478 nm; Attenuation coefficient, 480 nm; Attenuation coefficient, 482 nm; Attenuation coefficient, 484 nm; Attenuation coefficient, 486 nm; Attenuation coefficient, 488 nm; Attenuation coefficient, 490 nm; Attenuation coefficient, 492 nm; Attenuation coefficient, 494 nm; Attenuation coefficient, 496 nm; Attenuation coefficient, 498 nm; Attenuation coefficient, 500 nm; Attenuation coefficient, 502 nm; Attenuation coefficient, 504 nm; Attenuation coefficient, 506 nm; Attenuation coefficient, 508 nm; Attenuation coefficient, 510 nm; Attenuation coefficient, 512 nm; Attenuation coefficient, 514 nm; Attenuation coefficient, 516 nm; Attenuation coefficient, 518 nm; Attenuation coefficient, 520 nm; Attenuation coefficient, 522 nm; Attenuation coefficient, 524 nm; Attenuation coefficient, 526 nm; Attenuation coefficient, 528 nm; Attenuation coefficient, 530 nm; Attenuation coefficient, 532 nm; Attenuation coefficient, 534 nm; Attenuation coefficient, 536 nm; Attenuation coefficient, 538 nm; Attenuation coefficient, 540 nm; Attenuation coefficient, 542 nm; Attenuation coefficient, 544 nm; Attenuation coefficient, 546 nm; Attenuation coefficient, 548 nm; Attenuation coefficient, 550 nm; Attenuation coefficient, 552 nm; Attenuation coefficient, 554 nm; Attenuation coefficient, 556 nm; Attenuation coefficient, 558 nm; Attenuation coefficient, 560 nm; Attenuation coefficient, 562 nm; Attenuation coefficient, 564 nm; Attenuation coefficient, 566 nm; Attenuation coefficient, 568 nm; Attenuation coefficient, 570 nm; Attenuation coefficient, 572 nm; Attenuation coefficient, 574 nm; Attenuation coefficient, 576 nm; Attenuation coefficient, 578 nm; Attenuation coefficient, 580 nm; Attenuation coefficient, 582 nm; Attenuation coefficient, 584 nm; Attenuation coefficient, 586 nm; Attenuation coefficient, 588 nm; Attenuation coefficient, 590 nm; Attenuation coefficient, 592 nm; Attenuation coefficient, 594 nm; Attenuation coefficient, 596 nm; Attenuation coefficient, 598 nm; Attenuation coefficient, 600 nm; Attenuation coefficient, 602 nm; Attenuation coefficient, 604 nm; Attenuation coefficient, 606 nm; Attenuation coefficient, 608 nm; Attenuation coefficient, 610 nm; Attenuation coefficient, 612 nm; Attenuation coefficient, 614 nm; Attenuation coefficient, 616 nm; Attenuation coefficient, 618 nm; Attenuation coefficient, 620 nm; Attenuation coefficient, 622 nm; Attenuation coefficient, 624 nm; Attenuation coefficient, 626 nm; Attenuation coefficient, 628 nm; Attenuation coefficient, 630 nm; Attenuation coefficient, 632 nm; Attenuation coefficient, 634 nm; Attenuation coefficient, 636 nm; Attenuation coefficient, 638 nm; Attenuation coefficient, 640 nm; Attenuation coefficient, 642 nm; Attenuation coefficient, 644 nm; Attenuation coefficient, 646 nm; Attenuation coefficient, 648 nm; Attenuation coefficient, 650 nm; Attenuation coefficient, 652 nm; Attenuation coefficient, 654 nm; Attenuation coefficient, 656 nm; Attenuation coefficient, 658 nm; Attenuation coefficient, 660 nm; Attenuation coefficient, 662 nm; Attenuation coefficient, 664 nm; Attenuation coefficient, 666 nm; Attenuation coefficient, 668 nm; Attenuation coefficient, 670 nm; Attenuation coefficient, 672 nm; Attenuation coefficient, 674 nm; Attenuation coefficient, 676 nm; Attenuation coefficient, 678 nm; Attenuation coefficient, 680 nm; Attenuation coefficient, 682 nm; Attenuation coefficient, 684 nm; Attenuation coefficient, 686 nm; Attenuation coefficient, 688 nm; Attenuation coefficient, 690 nm; Attenuation coefficient, 692 nm; Attenuation coefficient, 694 nm; Attenuation coefficient, 696 nm; Attenuation coefficient, 698 nm; Attenuation coefficient, 700 nm; Attenuation coefficient, 702 nm; Attenuation coefficient, 704 nm; Attenuation coefficient, 706 nm; Attenuation coefficient, 708 nm; Attenuation coefficient, 710 nm; Attenuation coefficient, 712 nm; Attenuation coefficient, 714 nm; Attenuation coefficient, 716 nm; Attenuation coefficient, 718 nm; Attenuation coefficient, 720 nm; Attenuation coefficient, 722 nm; Attenuation coefficient, 724 nm; Attenuation coefficient, 726 nm; Attenuation coefficient, 728 nm; Attenuation coefficient, 730 nm; Attenuation coefficient, 732 nm; Attenuation coefficient, 734 nm; Attenuation coefficient, 736 nm; Attenuation coefficient, 738 nm; Attenuation coefficient, 740 nm; Bio-Optical Platform; BOP; Bristol Channel; Celtic Sea; CTD, Seabird; CTD/Rosette; CTD-GC; CTD-R; CTD-RO; CTD with gravity corer; English Channel; Event label; German Bight; HE287; HE287/169-1; HE287/170-1; HE287/171-1; HE287/172-1; HE287/173-1; HE287/174-1; HE287/175-1; HE287/176-1; HE287/177-1; HE287/178-1; HE287/179-1; HE287/180-1; HE287/181-1; HE287/182-1; HE287/183-1; HE287/184-1; HE287/185-1; HE287/186-1; HE287/187-1; HE287/188-1; HE287/189-1; HE287/190-1; HE287/191-1; HE287/192-1; HE287/193-1; HE287/194-1; HE287/195-1; HE287/196-1; HE287/197-1; HE287/198-1; HE287/199-1; HE287/200-3; HE287/201-1; HE287/202-1; HE287/203-1; HE287/204-1; HE287/205-1; HE287/206-1; HE287/207-1; HE287/208-1; HE287/209-1; HE287/210-1; HE287/211-1; HE287/212-1; HE287/213-1; HE287/214-1; HE287/215-1; HE287/216-1; HE287/217-1; HE298; HE298/001-1; HE298/002-1; HE298/005-1; HE298/007-1; HE298/008-1; HE298/009-1; HE298/011-1; HE298/013-1; HE298/015-1; HE298/017-1; HE298/019-1; HE298/021-1; HE298/022-1; HE298/024-1; HE298/026-1; HE298/028-1; HE298/030-1; HE298/031-1; HE298/033-1; HE298/035-1; HE298/037-1; HE298/040-1; HE298/042-1; HE298/044-1; HE298/046-1; HE298/048-1; HE298/050-1; HE298/052-1; HE298/053-1; HE298/055-1; HE298/056-1; HE303; HE303/246-1; HE303/248-1; HE303/250-1; HE303/252-1; HE303/254-1; HE303/256-1; HE303/258-1; HE303/260-1; HE303/262-1; HE303/264-1; HE303/266-1; HE303/268-1; HE303/270-1; HE303/272-1; HE303/274-1; HE303/276-1; HE303/278-1; HE303/280-1; HE303/282-1; HE303/284-1; HE303/286-1; HE303/289-1; HE303/292-1; HE303/294-1; HE303/296-1; HE303/298-1; HE303/300-1; HE303/302-1; HE303/304-1; HE303/306-1; HE303/308-1; HE303/310-1; HE303/312-1; HE303/314-1; HE303/315-1; HE308; HE308/514-2; HE308/514-3; HE308/515-1; HE308/517-1; HE308/518-1; HE308/519-1; HE308/520-1; HE308/521-1; HE308/523-1; HE308/525-1; HE308/527-1; HE308/529-1; HE308/531-1; HE308/533-1; HE308/535-1; HE308/537-1; HE308/539-1; HE308/541-1; HE308/543-1; HE308/545-1; HE308/546-1; HE308/548-1; HE308/550-1; HE308/552-1; HE308/553-1; HE308/555-1; HE308/557-1; HE308/559-1; HE308/561-1; HE308/563-1; HE312/1; HE312/840-1; HE312/843-1; HE312/845-1; HE312/847-1; HE312/849-1; HE312/851-1; HE312/853-1; HE312/855-1; HE312/857-1; HE312/859-1; HE312/861-1; HE312/863-1; HE312/865-1; HE312/867-1; HE312/869-1; HE312/871-1; HE312/872-1; HE312/875-1; HE312/877-1; HE312/879-1;
    Type: Dataset
    Format: text/tab-separated-values, 106493 data points
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  • 9
    Publication Date: 2024-05-11
    Description: A regional data set of water constituent concentrations and inherent optical properties (light absorption and scattering coefficient) for the German Bight and adjacent waters (River Elbe, North Sea, UK waters, and Southern Norwegian Sea) is presented. The data provide high quality results of in situ measurements and laboratory analysis of samples taken at sea, mainly from the mixed layer, during the years 2008 to 2021. Parameters of the water constituents include concentrations of chlorophyll a, particulate organic and dissolved organic carbon (POC, DOC), total suspended matter (TSM), organic suspended matter (OSM) together with water depth, temperature, salinity, and turbidity. Inherent optical properties (IOPs) are given spectrally as light attenuation, scattering and absorption coefficients. This includes coefficients of light attenuation by all non-water matter (cgp) and particulate matter alone (cp), light absorption by all non-water matter (agp), particulate (ap) and dissolved matter (Gelbstoff, ag), non-algal matter (anap) and phytoplankton (aph), and total scattering (bp) and backscattering (bbp) by particulate matter. The combination of concentrations and IOPS is used to determine specific IOPs of German Bight water and in optical modelling of coastal waters to interpret surface reflectance spectra like in satellite remote sensing approaches.
    Keywords: Attenuation coefficient, 250 nm; Attenuation coefficient, 252 nm; Attenuation coefficient, 254 nm; Attenuation coefficient, 256 nm; Attenuation coefficient, 258 nm; Attenuation coefficient, 260 nm; Attenuation coefficient, 262 nm; Attenuation coefficient, 264 nm; Attenuation coefficient, 266 nm; Attenuation coefficient, 268 nm; Attenuation coefficient, 270 nm; Attenuation coefficient, 272 nm; Attenuation coefficient, 274 nm; Attenuation coefficient, 276 nm; Attenuation coefficient, 278 nm; Attenuation coefficient, 280 nm; Attenuation coefficient, 282 nm; Attenuation coefficient, 284 nm; Attenuation coefficient, 286 nm; Attenuation coefficient, 288 nm; Attenuation coefficient, 290 nm; Attenuation coefficient, 292 nm; Attenuation coefficient, 294 nm; Attenuation coefficient, 296 nm; Attenuation coefficient, 298 nm; Attenuation coefficient, 300 nm; Attenuation coefficient, 302 nm; Attenuation coefficient, 304 nm; Attenuation coefficient, 306 nm; Attenuation coefficient, 308 nm; Attenuation coefficient, 310 nm; Attenuation coefficient, 312 nm; Attenuation coefficient, 314 nm; Attenuation coefficient, 316 nm; Attenuation coefficient, 318 nm; Attenuation coefficient, 320 nm; Attenuation coefficient, 322 nm; Attenuation coefficient, 324 nm; Attenuation coefficient, 326 nm; Attenuation coefficient, 328 nm; Attenuation coefficient, 330 nm; Attenuation coefficient, 332 nm; Attenuation coefficient, 334 nm; Attenuation coefficient, 336 nm; Attenuation coefficient, 338 nm; Attenuation coefficient, 340 nm; Attenuation coefficient, 342 nm; Attenuation coefficient, 344 nm; Attenuation coefficient, 346 nm; Attenuation coefficient, 348 nm; Attenuation coefficient, 350 nm; Attenuation coefficient, 352 nm; Attenuation coefficient, 354 nm; Attenuation coefficient, 356 nm; Attenuation coefficient, 358 nm; Attenuation coefficient, 360 nm; Attenuation coefficient, 362 nm; Attenuation coefficient, 364 nm; Attenuation coefficient, 366 nm; Attenuation coefficient, 368 nm; Attenuation coefficient, 370 nm; Attenuation coefficient, 372 nm; Attenuation coefficient, 374 nm; Attenuation coefficient, 376 nm; Attenuation coefficient, 378 nm; Attenuation coefficient, 380 nm; Attenuation coefficient, 382 nm; Attenuation coefficient, 384 nm; Attenuation coefficient, 386 nm; Attenuation coefficient, 388 nm; Attenuation coefficient, 390 nm; Attenuation coefficient, 392 nm; Attenuation coefficient, 394 nm; Attenuation coefficient, 396 nm; Attenuation coefficient, 398 nm; Attenuation coefficient, 400 nm; Attenuation coefficient, 402 nm; Attenuation coefficient, 404 nm; Attenuation coefficient, 406 nm; Attenuation coefficient, 408 nm; Attenuation coefficient, 410 nm; Attenuation coefficient, 412 nm; Attenuation coefficient, 414 nm; Attenuation coefficient, 416 nm; Attenuation coefficient, 418 nm; Attenuation coefficient, 420 nm; Attenuation coefficient, 422 nm; Attenuation coefficient, 424 nm; Attenuation coefficient, 426 nm; Attenuation coefficient, 428 nm; Attenuation coefficient, 430 nm; Attenuation coefficient, 432 nm; Attenuation coefficient, 434 nm; Attenuation coefficient, 436 nm; Attenuation coefficient, 438 nm; Attenuation coefficient, 440 nm; Attenuation coefficient, 442 nm; Attenuation coefficient, 444 nm; Attenuation coefficient, 446 nm; Attenuation coefficient, 448 nm; Attenuation coefficient, 450 nm; Attenuation coefficient, 452 nm; Attenuation coefficient, 454 nm; Attenuation coefficient, 456 nm; Attenuation coefficient, 458 nm; Attenuation coefficient, 460 nm; Attenuation coefficient, 462 nm; Attenuation coefficient, 464 nm; Attenuation coefficient, 466 nm; Attenuation coefficient, 468 nm; Attenuation coefficient, 470 nm; Attenuation coefficient, 472 nm; Attenuation coefficient, 474 nm; Attenuation coefficient, 476 nm; Attenuation coefficient, 478 nm; Attenuation coefficient, 480 nm; Attenuation coefficient, 482 nm; Attenuation coefficient, 484 nm; Attenuation coefficient, 486 nm; Attenuation coefficient, 488 nm; Attenuation coefficient, 490 nm; Attenuation coefficient, 492 nm; Attenuation coefficient, 494 nm; Attenuation coefficient, 496 nm; Attenuation coefficient, 498 nm; Attenuation coefficient, 500 nm; Attenuation coefficient, 502 nm; Attenuation coefficient, 504 nm; Attenuation coefficient, 506 nm; Attenuation coefficient, 508 nm; Attenuation coefficient, 510 nm; Attenuation coefficient, 512 nm; Attenuation coefficient, 514 nm; Attenuation coefficient, 516 nm; Attenuation coefficient, 518 nm; Attenuation coefficient, 520 nm; Attenuation coefficient, 522 nm; Attenuation coefficient, 524 nm; Attenuation coefficient, 526 nm; Attenuation coefficient, 528 nm; Attenuation coefficient, 530 nm; Attenuation coefficient, 532 nm; Attenuation coefficient, 534 nm; Attenuation coefficient, 536 nm; Attenuation coefficient, 538 nm; Attenuation coefficient, 540 nm; Attenuation coefficient, 542 nm; Attenuation coefficient, 544 nm; Attenuation coefficient, 546 nm; Attenuation coefficient, 548 nm; Attenuation coefficient, 550 nm; Attenuation coefficient, 552 nm; Attenuation coefficient, 554 nm; Attenuation coefficient, 556 nm; Attenuation coefficient, 558 nm; Attenuation coefficient, 560 nm; Attenuation coefficient, 562 nm; Attenuation coefficient, 564 nm; Attenuation coefficient, 566 nm; Attenuation coefficient, 568 nm; Attenuation coefficient, 570 nm; Attenuation coefficient, 572 nm; Attenuation coefficient, 574 nm; Attenuation coefficient, 576 nm; Attenuation coefficient, 578 nm; Attenuation coefficient, 580 nm; Attenuation coefficient, 582 nm; Attenuation coefficient, 584 nm; Attenuation coefficient, 586 nm; Attenuation coefficient, 588 nm; Attenuation coefficient, 590 nm; Attenuation coefficient, 592 nm; Attenuation coefficient, 594 nm; Attenuation coefficient, 596 nm; Attenuation coefficient, 598 nm; Attenuation coefficient, 600 nm; Attenuation coefficient, 602 nm; Attenuation coefficient, 604 nm; Attenuation coefficient, 606 nm; Attenuation coefficient, 608 nm; Attenuation coefficient, 610 nm; Attenuation coefficient, 612 nm; Attenuation coefficient, 614 nm; Attenuation coefficient, 616 nm; Attenuation coefficient, 618 nm; Attenuation coefficient, 620 nm; Attenuation coefficient, 622 nm; Attenuation coefficient, 624 nm; Attenuation coefficient, 626 nm; Attenuation coefficient, 628 nm; Attenuation coefficient, 630 nm; Attenuation coefficient, 632 nm; Attenuation coefficient, 634 nm; Attenuation coefficient, 636 nm; Attenuation coefficient, 638 nm; Attenuation coefficient, 640 nm; Attenuation coefficient, 642 nm; Attenuation coefficient, 644 nm; Attenuation coefficient, 646 nm; Attenuation coefficient, 648 nm; Attenuation coefficient, 650 nm; Attenuation coefficient, 652 nm; Attenuation coefficient, 654 nm; Attenuation coefficient, 656 nm; Attenuation coefficient, 658 nm; Attenuation coefficient, 660 nm; Attenuation coefficient, 662 nm; Attenuation coefficient, 664 nm; Attenuation coefficient, 666 nm; Attenuation coefficient, 668 nm; Attenuation coefficient, 670 nm; Attenuation coefficient, 672 nm; Attenuation coefficient, 674 nm; Attenuation coefficient, 676 nm; Attenuation coefficient, 678 nm; Attenuation coefficient, 680 nm; Attenuation coefficient, 682 nm; Attenuation coefficient, 684 nm; Attenuation coefficient, 686 nm; Attenuation coefficient, 688 nm; Attenuation coefficient, 690 nm; Attenuation coefficient, 692 nm; Attenuation coefficient, 694 nm; Attenuation coefficient, 696 nm; Attenuation coefficient, 698 nm; Attenuation coefficient, 700 nm; Attenuation coefficient, 702 nm; Attenuation coefficient, 704 nm; Attenuation coefficient, 706 nm; Attenuation coefficient, 708 nm; Attenuation coefficient, 710 nm; Attenuation coefficient, 712 nm; Attenuation coefficient, 714 nm; Attenuation coefficient, 716 nm; Attenuation coefficient, 718 nm; Attenuation coefficient, 720 nm; Attenuation coefficient, 722 nm; Attenuation coefficient, 724 nm; Attenuation coefficient, 726 nm; Attenuation coefficient, 728 nm; Attenuation coefficient, 730 nm; Attenuation coefficient, 732 nm; Attenuation
    Type: Dataset
    Format: text/tab-separated-values, 174361 data points
    Location Call Number Limitation Availability
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  • 10
    Publication Date: 2024-05-11
    Description: A regional data set of water constituent concentrations and inherent optical properties (light absorption and scattering coefficient) for the German Bight and adjacent waters (River Elbe, North Sea, UK waters, and Southern Norwegian Sea) is presented. The data provide high quality results of in situ measurements and laboratory analysis of samples taken at sea, mainly from the mixed layer, during the years 2008 to 2021. Parameters of the water constituents include concentrations of chlorophyll a, particulate organic and dissolved organic carbon (POC, DOC), total suspended matter (TSM), organic suspended matter (OSM) together with water depth, temperature, salinity, and turbidity. Inherent optical properties (IOPs) are given spectrally as light attenuation, scattering and absorption coefficients. This includes coefficients of light attenuation by all non-water matter (cgp) and particulate matter alone (cp), light absorption by all non-water matter (agp), particulate (ap) and dissolved matter (Gelbstoff, ag), non-algal matter (anap) and phytoplankton (aph), and total scattering (bp) and backscattering (bbp) by particulate matter. The combination of concentrations and IOPS is used to determine specific IOPs of German Bight water and in optical modelling of coastal waters to interpret surface reflectance spectra like in satellite remote sensing approaches.
    Keywords: Attenuation coefficient, 300 nm; Attenuation coefficient, 302 nm; Attenuation coefficient, 304 nm; Attenuation coefficient, 306 nm; Attenuation coefficient, 308 nm; Attenuation coefficient, 310 nm; Attenuation coefficient, 312 nm; Attenuation coefficient, 314 nm; Attenuation coefficient, 316 nm; Attenuation coefficient, 318 nm; Attenuation coefficient, 320 nm; Attenuation coefficient, 322 nm; Attenuation coefficient, 324 nm; Attenuation coefficient, 326 nm; Attenuation coefficient, 328 nm; Attenuation coefficient, 330 nm; Attenuation coefficient, 332 nm; Attenuation coefficient, 334 nm; Attenuation coefficient, 336 nm; Attenuation coefficient, 338 nm; Attenuation coefficient, 340 nm; Attenuation coefficient, 342 nm; Attenuation coefficient, 344 nm; Attenuation coefficient, 346 nm; Attenuation coefficient, 348 nm; Attenuation coefficient, 350 nm; Attenuation coefficient, 352 nm; Attenuation coefficient, 354 nm; Attenuation coefficient, 356 nm; Attenuation coefficient, 358 nm; Attenuation coefficient, 360 nm; Attenuation coefficient, 362 nm; Attenuation coefficient, 364 nm; Attenuation coefficient, 366 nm; Attenuation coefficient, 368 nm; Attenuation coefficient, 370 nm; Attenuation coefficient, 372 nm; Attenuation coefficient, 374 nm; Attenuation coefficient, 376 nm; Attenuation coefficient, 378 nm; Attenuation coefficient, 380 nm; Attenuation coefficient, 382 nm; Attenuation coefficient, 384 nm; Attenuation coefficient, 386 nm; Attenuation coefficient, 388 nm; Attenuation coefficient, 390 nm; Attenuation coefficient, 392 nm; Attenuation coefficient, 394 nm; Attenuation coefficient, 396 nm; Attenuation coefficient, 398 nm; Attenuation coefficient, 400 nm; Attenuation coefficient, 402 nm; Attenuation coefficient, 404 nm; Attenuation coefficient, 406 nm; Attenuation coefficient, 408 nm; Attenuation coefficient, 410 nm; Attenuation coefficient, 412 nm; Attenuation coefficient, 414 nm; Attenuation coefficient, 416 nm; Attenuation coefficient, 418 nm; Attenuation coefficient, 420 nm; Attenuation coefficient, 422 nm; Attenuation coefficient, 424 nm; Attenuation coefficient, 426 nm; Attenuation coefficient, 428 nm; Attenuation coefficient, 430 nm; Attenuation coefficient, 432 nm; Attenuation coefficient, 434 nm; Attenuation coefficient, 436 nm; Attenuation coefficient, 438 nm; Attenuation coefficient, 440 nm; Attenuation coefficient, 442 nm; Attenuation coefficient, 444 nm; Attenuation coefficient, 446 nm; Attenuation coefficient, 448 nm; Attenuation coefficient, 450 nm; Attenuation coefficient, 452 nm; Attenuation coefficient, 454 nm; Attenuation coefficient, 456 nm; Attenuation coefficient, 458 nm; Attenuation coefficient, 460 nm; Attenuation coefficient, 462 nm; Attenuation coefficient, 464 nm; Attenuation coefficient, 466 nm; Attenuation coefficient, 468 nm; Attenuation coefficient, 470 nm; Attenuation coefficient, 472 nm; Attenuation coefficient, 474 nm; Attenuation coefficient, 476 nm; Attenuation coefficient, 478 nm; Attenuation coefficient, 480 nm; Attenuation coefficient, 482 nm; Attenuation coefficient, 484 nm; Attenuation coefficient, 486 nm; Attenuation coefficient, 488 nm; Attenuation coefficient, 490 nm; Attenuation coefficient, 492 nm; Attenuation coefficient, 494 nm; Attenuation coefficient, 496 nm; Attenuation coefficient, 498 nm; Attenuation coefficient, 500 nm; Attenuation coefficient, 502 nm; Attenuation coefficient, 504 nm; Attenuation coefficient, 506 nm; Attenuation coefficient, 508 nm; Attenuation coefficient, 510 nm; Attenuation coefficient, 512 nm; Attenuation coefficient, 514 nm; Attenuation coefficient, 516 nm; Attenuation coefficient, 518 nm; Attenuation coefficient, 520 nm; Attenuation coefficient, 522 nm; Attenuation coefficient, 524 nm; Attenuation coefficient, 526 nm; Attenuation coefficient, 528 nm; Attenuation coefficient, 530 nm; Attenuation coefficient, 532 nm; Attenuation coefficient, 534 nm; Attenuation coefficient, 536 nm; Attenuation coefficient, 538 nm; Attenuation coefficient, 540 nm; Attenuation coefficient, 542 nm; Attenuation coefficient, 544 nm; Attenuation coefficient, 546 nm; Attenuation coefficient, 548 nm; Attenuation coefficient, 550 nm; Attenuation coefficient, 552 nm; Attenuation coefficient, 554 nm; Attenuation coefficient, 556 nm; Attenuation coefficient, 558 nm; Attenuation coefficient, 560 nm; Attenuation coefficient, 562 nm; Attenuation coefficient, 564 nm; Attenuation coefficient, 566 nm; Attenuation coefficient, 568 nm; Attenuation coefficient, 570 nm; Attenuation coefficient, 572 nm; Attenuation coefficient, 574 nm; Attenuation coefficient, 576 nm; Attenuation coefficient, 578 nm; Attenuation coefficient, 580 nm; Attenuation coefficient, 582 nm; Attenuation coefficient, 584 nm; Attenuation coefficient, 586 nm; Attenuation coefficient, 588 nm; Attenuation coefficient, 590 nm; Attenuation coefficient, 592 nm; Attenuation coefficient, 594 nm; Attenuation coefficient, 596 nm; Attenuation coefficient, 598 nm; Attenuation coefficient, 600 nm; Attenuation coefficient, 602 nm; Attenuation coefficient, 604 nm; Attenuation coefficient, 606 nm; Attenuation coefficient, 608 nm; Attenuation coefficient, 610 nm; Attenuation coefficient, 612 nm; Attenuation coefficient, 614 nm; Attenuation coefficient, 616 nm; Attenuation coefficient, 618 nm; Attenuation coefficient, 620 nm; Attenuation coefficient, 622 nm; Attenuation coefficient, 624 nm; Attenuation coefficient, 626 nm; Attenuation coefficient, 628 nm; Attenuation coefficient, 630 nm; Attenuation coefficient, 632 nm; Attenuation coefficient, 634 nm; Attenuation coefficient, 636 nm; Attenuation coefficient, 638 nm; Attenuation coefficient, 640 nm; Attenuation coefficient, 642 nm; Attenuation coefficient, 644 nm; Attenuation coefficient, 646 nm; Attenuation coefficient, 648 nm; Attenuation coefficient, 650 nm; Attenuation coefficient, 652 nm; Attenuation coefficient, 654 nm; Attenuation coefficient, 656 nm; Attenuation coefficient, 658 nm; Attenuation coefficient, 660 nm; Attenuation coefficient, 662 nm; Attenuation coefficient, 664 nm; Attenuation coefficient, 666 nm; Attenuation coefficient, 668 nm; Attenuation coefficient, 670 nm; Attenuation coefficient, 672 nm; Attenuation coefficient, 674 nm; Attenuation coefficient, 676 nm; Attenuation coefficient, 678 nm; Attenuation coefficient, 680 nm; Attenuation coefficient, 682 nm; Attenuation coefficient, 684 nm; Attenuation coefficient, 686 nm; Attenuation coefficient, 688 nm; Attenuation coefficient, 690 nm; Attenuation coefficient, 692 nm; Attenuation coefficient, 694 nm; Attenuation coefficient, 696 nm; Attenuation coefficient, 698 nm; Attenuation coefficient, 700 nm; Attenuation coefficient, 702 nm; Attenuation coefficient, 704 nm; Attenuation coefficient, 706 nm; Attenuation coefficient, 708 nm; Attenuation coefficient, 710 nm; Attenuation coefficient, 712 nm; Attenuation coefficient, 714 nm; Attenuation coefficient, 716 nm; Attenuation coefficient, 718 nm; Attenuation coefficient, 720 nm; Attenuation coefficient, 722 nm; Attenuation coefficient, 724 nm; Attenuation coefficient, 726 nm; Attenuation coefficient, 728 nm; Attenuation coefficient, 730 nm; Attenuation coefficient, 732 nm; Attenuation coefficient, 734 nm; Attenuation coefficient, 736 nm; Attenuation coefficient, 738 nm; Attenuation coefficient, 740 nm; Attenuation coefficient, 742 nm; Attenuation coefficient, 744 nm; Attenuation coefficient, 746 nm; Attenuation coefficient, 748 nm; Attenuation coefficient, 750 nm; Attenuation coefficient, 752 nm; Attenuation coefficient, 754 nm; Attenuation coefficient, 756 nm; Attenuation coefficient, 758 nm; Attenuation coefficient, 760 nm; Attenuation coefficient, 762 nm; Attenuation coefficient, 764 nm; Attenuation coefficient, 766 nm; Attenuation coefficient, 768 nm; Attenuation coefficient, 770 nm; Attenuation coefficient, 772 nm; Attenuation coefficient, 774 nm; Attenuation coefficient, 776 nm; Attenuation coefficient, 778 nm; Attenuation coefficient, 780 nm; Attenuation coefficient, 782 nm; Attenuation
    Type: Dataset
    Format: text/tab-separated-values, 191575 data points
    Location Call Number Limitation Availability
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