@prefix dcat: . @prefix dct: . @prefix foaf: . @prefix gsp: . @prefix locn: . @prefix owl: . @prefix rdfs: . @prefix schema: . @prefix xsd: . a schema:Dataset, dcat:Dataset, foaf:Document ; dct:bibliographicCitation "https://doi.org/10.1594/PANGAEA.967406" ; dct:contributor "pangaea" ; dct:description "We collected water samples from the river surface in the center of the Olenekskaya Channel near Samoylov Island using a pre-rinsed HDPE 1 L bottle. During the open water period (June to October), water was sampled from a small boat, and during ice-covered period (November to May), through a hole drilled through the river ice. Some samples during the river ice break-up (between May and June) as well as some samples during the ice freeze-up in October were taken from the shore due to the inaccessibility of a more centered location on the river channel. For CDOM absorption (aCDOM(λ)), the sample was filtered through a 0.45 μm cellulose acetate filter which had been rinsed with 20 mL sample water. CDOM samples were collected in pre-rinsed 50 or 100 mL amber glass bottles that were stored in the dark at 4°C until analysis. aCDOM was measuredat the German Research Center for Geosciences (GFZ), Potsdam, Germany using a double beam LAMBDA 950 UV/Vis (PerkinElmer) spectrophotometer. The absorbance (A) was measured between 200 and 800 nm in 1 nm steps using a 1, 2 or 5 cm cuvette, depending on the expected concentration of dissolved organic matter. Absorption (a) was calculated from the resulting absorbance measurements via aCDOM(λ) = 2.303 * A(λ) * l, where l is the path length (length of cuvette in meter). Every 5 to 10 samples, the reference sample (Milli-Q water) was exchanged and a blank was measured to avoid instrument drift." ; dct:identifier "https://doi.pangaea.de/10.1594/PANGAEA.967406" ; dct:issued "2026-05-20T14:18:40.276458"^^xsd:dateTime ; dct:modified "2026-05-20T21:34:27.270311"^^xsd:dateTime ; dct:publisher [ a foaf:Agent ; foaf:homepage ; foaf:name "PANGAEA" ], [ a foaf:Agent ; foaf:homepage ; foaf:name "PANGAEA" ] ; dct:spatial [ a dct:Location ; locn:geometry "POINT (126.4595 72.3680)"^^gsp:wktLiteral ] ; dct:temporal [ a dct:PeriodOfTime ; dcat:endDate "2021-08-23"^^xsd:date ; dcat:startDate "2019-09-13"^^xsd:date ], [ a dct:PeriodOfTime ; dcat:endDate "2021-08-23"^^xsd:date ; dcat:startDate "2019-09-13"^^xsd:date ] ; dct:title "Colored dissolved organic matter of Lena River water from 13.09.2019 (#202) to 23.08.2021 (#487)" ; schema:about [ a schema:Thing ; schema:name "sun-earth-interactions" ; schema:url "https://dataportal.dev.inkode.org/group/d442910f-0139-4e53-9505-29017a7c4ecb" ] ; schema:citation "https://doi.org/10.1594/PANGAEA.967406" ; schema:contributor "pangaea" ; schema:creator [ a schema:Organization ; schema:contactPoint [ a schema:ContactPoint ; schema:contactType "customer service" ; schema:name "Alfred Wegener Institute for Polar and Marine Research (AWI - Partner 7)" ; schema:url "https://doi.pangaea.de/10.1594/PANGAEA.967406" ] ; schema:name "Alfred Wegener Institute for Polar and Marine Research (AWI - Partner 7)" ] ; schema:dateModified "2026-05-20T21:34:27.270311" ; schema:datePublished "2024-11-07", "2024-11-07T00:00:00" ; schema:description "We collected water samples from the river surface in the center of the Olenekskaya Channel near Samoylov Island using a pre-rinsed HDPE 1 L bottle. During the open water period (June to October), water was sampled from a small boat, and during ice-covered period (November to May), through a hole drilled through the river ice. Some samples during the river ice break-up (between May and June) as well as some samples during the ice freeze-up in October were taken from the shore due to the inaccessibility of a more centered location on the river channel. For CDOM absorption (aCDOM(λ)), the sample was filtered through a 0.45 μm cellulose acetate filter which had been rinsed with 20 mL sample water. CDOM samples were collected in pre-rinsed 50 or 100 mL amber glass bottles that were stored in the dark at 4°C until analysis. aCDOM was measuredat the German Research Center for Geosciences (GFZ), Potsdam, Germany using a double beam LAMBDA 950 UV/Vis (PerkinElmer) spectrophotometer. The absorbance (A) was measured between 200 and 800 nm in 1 nm steps using a 1, 2 or 5 cm cuvette, depending on the expected concentration of dissolved organic matter. Absorption (a) was calculated from the resulting absorbance measurements via aCDOM(λ) = 2.303 * A(λ) * l, where l is the path length (length of cuvette in meter). Every 5 to 10 samples, the reference sample (Milli-Q water) was exchanged and a blank was measured to avoid instrument drift." ; schema:distribution , ; schema:identifier "https://doi.pangaea.de/10.1594/PANGAEA.967406" ; schema:license "https://creativecommons.org/licenses/by/4.0/" ; schema:name "Colored dissolved organic matter of Lena River water from 13.09.2019 (#202) to 23.08.2021 (#487)" ; schema:publisher [ a schema:Organization ; schema:contactPoint [ a schema:ContactPoint ; schema:contactType "customer service" ; schema:name "PANGAEA" ; schema:url "https://www.pangaea.de/" ] ; schema:name "PANGAEA" ] ; schema:spatialCoverage [ a schema:Place ; schema:geo [ a schema:GeoShape ; schema:polygon "{\"type\": \"Point\", \"coordinates\": [126.45955, 72.367977]}" ] ] ; schema:temporalCoverage "2019-09-13/2021-08-23" ; schema:url "https://doi.pangaea.de/10.1594/PANGAEA.967406" ; schema:variableMeasured [ a schema:PropertyValue ; schema:name "Identification" ] ; schema:version "1.0" ; owl:versionInfo "1.0" ; dcat:distribution , ; dcat:landingPage . a schema:DataDownload, rdfs:Resource, dcat:Distribution ; dct:format "HTML" ; dct:issued "2026-05-20T16:37:16.562122"^^xsd:dateTime ; dct:modified "2026-05-20T16:37:46.732935"^^xsd:dateTime ; dct:title "Colored dissolved organic matter of Lena River water from 13.09.2019 (#202) to 23.08.2021 (#487)" ; schema:contentUrl "https://doi.pangaea.de/10.1594/PANGAEA.967406?format=html" ; schema:encodingFormat "HTML" ; schema:name "Colored dissolved organic matter of Lena River water from 13.09.2019 (#202) to 23.08.2021 (#487)" ; dcat:downloadURL . a schema:DataDownload, rdfs:Resource, dcat:Distribution ; dct:format "TSV" ; dct:issued "2026-05-20T16:37:15.277050"^^xsd:dateTime ; dct:modified "2026-05-20T16:37:16.560695"^^xsd:dateTime ; dct:title "Colored dissolved organic matter of Lena River water from 13.09.2019 (#202) to 23.08.2021 (#487)" ; schema:contentUrl "https://doi.pangaea.de/10.1594/PANGAEA.967406?format=textfile" ; schema:encodingFormat "TSV" ; schema:name "Colored dissolved organic matter of Lena River water from 13.09.2019 (#202) to 23.08.2021 (#487)" ; dcat:downloadURL .