{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:00:20Z","timestamp":1760241620210,"version":"build-2065373602"},"reference-count":29,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2018,6,20]],"date-time":"2018-06-20T00:00:00Z","timestamp":1529452800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100011937","name":"Nieders\u00e4chsische Ministerium f\u00fcr Wissenschaft und Kultur","doi-asserted-by":"publisher","award":["VWZN3175"],"award-info":[{"award-number":["VWZN3175"]}],"id":[{"id":"10.13039\/100011937","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>We present here parameterizations of particulate and phytoplankton absorption coefficients as functions of pigment concentrations (Tchla) in Sognefjord and Trondheimsfjord along the northwestern coast of Norway. The total particulate and non-algal optical densities were measured via quantitative filter technique (QFT) in a spectrophotometer with integrating sphere. The spectral parameter coefficients A(\u03bb) and E(\u03bb) of the power law describing variations of particulate and phytoplankton absorption coefficients as a function of Tchla, were not only different from those provided for open ocean case 1 waters, but also exhibited differences in the two fjords under investigation. Considering the influence of glacial meltwater leading to increased inorganic sediment load in Sognefjord we investigate differences in two different parameterizations, developed by excluding and including inner Sognefjord stations. Tchla are modelled to test the parameterizations and validated against data from the same cruise and that from a repeated campaign. Being less influenced by non-algal particles parameterizations performed well in Trondheimsfjord and yielded high coefficients of determination (R2) of modelled vs. measured Tchla. In Sognefjord, the modelled vs. measured Tchla resulted in better R2 with parameter coefficients developed excluding the inner-fjord stations influenced by glacial meltwater influx.<\/jats:p>","DOI":"10.3390\/rs10060977","type":"journal-article","created":{"date-parts":[[2018,6,20]],"date-time":"2018-06-20T10:41:24Z","timestamp":1529491284000},"page":"977","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Parameterization of Spectral Particulate and Phytoplankton Absorption Coefficients in Sognefjord and Trondheimsfjord, Two Contrasting Norwegian Fjord Ecosystems"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5387-9491","authenticated-orcid":false,"given":"Veloisa J.","family":"Mascarenhas","sequence":"first","affiliation":[{"name":"Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Schleusenstrasse 1, 26382 Wilhelmshaven, Lower Saxony, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6018-5030","authenticated-orcid":false,"given":"Oliver","family":"Zielinski","sequence":"additional","affiliation":[{"name":"Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Schleusenstrasse 1, 26382 Wilhelmshaven, Lower Saxony, Germany"}]}],"member":"1968","published-online":{"date-parts":[[2018,6,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"10909","DOI":"10.1029\/JD093iD09p10909","article-title":"A semianalytic radiance model of ocean color","volume":"93","author":"Gordon","year":"1988","journal-title":"J. Geophys. Res. Atmos."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Kirk, J.T. (1994). Light and Photosynthesis in Aquatic Ecosystems, Cambridge University Press.","DOI":"10.1017\/CBO9780511623370"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"31033","DOI":"10.1029\/98JC02712","article-title":"Variations of light absorption by suspended particles with chlorophyll a concentration in oceanic(case 1) waters- analysis and implications for bio-optical models","volume":"103","author":"Bricaud","year":"1998","journal-title":"J. Geophys. Res."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1016\/j.ecss.2016.05.012","article-title":"Absorption properties of high-latitude norwegian coastal water: The impact of cdom and particulate matter","volume":"178","author":"Nima","year":"2016","journal-title":"Estuar. Coast. Shelf Sci."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"13321","DOI":"10.1029\/95JC00463","article-title":"Variability in the chlorophyll-specific absorption coefficients of natural phytoplankton: Analysis and parameterization","volume":"100","author":"Bricaud","year":"1995","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Stramska, M., Stramski, D., Hapter, R., Kaczmarek, S., and Sto\u0144, J. (2003). Bio-optical relationships and ocean color algorithms for the north polar region of the atlantic. J. Geophys. Res. Oceans, 108.","DOI":"10.1029\/2001JC001195"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"26301","DOI":"10.1029\/1999JC000296","article-title":"Bio-optical properties and remote sensing ocean color algorithms for antarctic peninsula waters","volume":"105","author":"Dierssen","year":"2000","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"249","DOI":"10.1080\/014311601449925","article-title":"Remote sensing of phytoplankton pigments: A comparison of empirical and theoretical approaches","volume":"22","author":"Sathyendranath","year":"2001","journal-title":"Int. J. Remote Sens."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Cota, G.F., Harrison, W.G., Platt, T., Sathyendranath, S., and Stuart, V. (2003). Bio-optical properties of the labrador sea. J. Geophys. Res. Oceans, 108.","DOI":"10.1029\/2000JC000597"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"503","DOI":"10.5589\/m07-059","article-title":"Bio-optical characteristics of the western arctic ocean: Implications for ocean color algorithms","volume":"33","author":"Matsuoka","year":"2007","journal-title":"Can. J. Remote Sens."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1539","DOI":"10.1080\/01431160500382857","article-title":"Empirical and semi-analytical chlorophyll algorithms in the south-western atlantic coastal region (25\u201340 s and 60\u201345 w)","volume":"27","author":"Garcia","year":"2006","journal-title":"Int. J. Remote Sens."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"063565","DOI":"10.1117\/1.JRS.6.063565","article-title":"Evaluation of empirical and semi-analytical chlorophyll algorithms in the ligurian and north tyrrhenian seas","volume":"6","author":"Lapucci","year":"2012","journal-title":"J. Appl. Remote Sens."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1016\/j.dsr.2006.12.001","article-title":"Phytoplankton pigment absorption: A strong predictor of primary productivity in the surface ocean","volume":"54","author":"Marra","year":"2007","journal-title":"Deep Sea Res. Part I Oceanogr. Res. Pap."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"72","DOI":"10.1016\/j.ecss.2015.05.041","article-title":"The influence of glacial melt water on bio-optical properties in two contrasting greenlandic fjords","volume":"163","author":"Murray","year":"2015","journal-title":"Estuar. Coast. Shelf Sci."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"9","DOI":"10.3354\/meps090009","article-title":"Ecosystem model for evaluating potential cod production in a west norwegian fjord","volume":"90","author":"Salvanes","year":"1992","journal-title":"Mar. Ecol. Prog. Ser."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"883","DOI":"10.1364\/AO.42.000883","article-title":"Parameterization and analysis of the optical absorption and scattering coefficients in a western norwegian fjord: A case ii water study","volume":"42","author":"Hamre","year":"2003","journal-title":"Appl. Opt."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"3828","DOI":"10.1002\/2016JC012610","article-title":"Fjord light regime: Bio-optical variability, absorption budget, and hyperspectral light availability in sognefjord and trondheimsfjord, norway","volume":"122","author":"Mascarenhas","year":"2017","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_18","unstructured":"Zielinski, O. (2015). Station List and Links to Master Tracks in Different Resolutions of Heincke Cruise HE448, Bremerhaven\u2014Trondheim, 2015-07-07\u20132015-07-30, Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research."},{"key":"ref_19","unstructured":"Zielinski, O., and Rohardt, G. (2016). Physical Oceanography during Heincke Cruise HE448, Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research."},{"key":"ref_20","unstructured":"Wurl, O., and Wisotzki, A. (2017). Physical Oceanography during Heincke Cruise HE491, Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research."},{"key":"ref_21","unstructured":"Wurl, O. (2017). Station List and Links to Master Tracks in Different Resolutions of Heincke Cruise HE491, Bremerhaven\u2013Trondheim, 2017-07-08\u20132017-07-27, Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"2449","DOI":"10.1080\/01431169608948782","article-title":"Absorption spectra of inorganic particles in the irish sea and their relevance to remote sensing of chlorophyll","volume":"17","author":"Bowers","year":"1996","journal-title":"Int. J. Remote Sens."},{"key":"ref_23","unstructured":"Roesler, C., Stramski, D., D\u2019Sa, E., R\u00f6ttgers, R., and Reynolds, R.A. (2018, June 19). Spectrophotometric Measurements of Particulate Absorption Using Filter Pads. Available online: http:\/\/ioccg.org\/wp-content\/uploads\/2017\/11\/chapter_5_corrigendum.pdf."},{"key":"ref_24","first-page":"3828","article-title":"Absorbance measurements of total particulate and non-algal particulate matter during heincke cruise HE448 in sognefjord and trondheimsfjord, norway","volume":"122","author":"Meier","year":"2018","journal-title":"J. Geophys. Res. Ocean."},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Mascarenhas, V.J., and Zielinski, O. (2017, January 19\u201322). Spectral particulate absorption properties in sognefjord and trondheimsfjord, norway. Proceedings of the OCEANS 2017-Aberdeen, Aberdeen, UK.","DOI":"10.1109\/OCEANSE.2017.8084757"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"117","DOI":"10.5194\/os-12-117-2016","article-title":"Bio-optical characterization and light availability parameterization in uummannaq fjord and vaigat\u2013disko bay (west greenland)","volume":"12","author":"Holinde","year":"2016","journal-title":"Ocean Sci."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1442","DOI":"10.1007\/s12237-010-9300-7","article-title":"Suspended matter, chl-a, cdom, grain sizes, and optical properties in the arctic fjord-type estuary, kangerlussuaq, west greenland during summer","volume":"33","author":"Andersen","year":"2010","journal-title":"Estuar. Coasts"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"20599","DOI":"10.1029\/91JC02117","article-title":"Reflectance model for quantifying chlorophyll a in the presence of productivity degradation products","volume":"96","author":"Carder","year":"1991","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1660","DOI":"10.4319\/lo.1992.37.8.1660","article-title":"Bio-optical characteristics of coastal waters: Absorption spectra of phytoplankton and pigment distribution in the western north atlantic","volume":"37","author":"Hoepffner","year":"1992","journal-title":"Limnol. Oceanogr."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/10\/6\/977\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:09:29Z","timestamp":1760195369000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/10\/6\/977"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,6,20]]},"references-count":29,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2018,6]]}},"alternative-id":["rs10060977"],"URL":"https:\/\/doi.org\/10.3390\/rs10060977","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2018,6,20]]}}}