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Juhls, Bennet; Morgenstern, Anne; Chetverova, Antonina; Eulenburg, Antje; Hölemann, Jens A; Povazhnyi, Vasily; Overduin, Pier Paul (2020): Temperature, electrical conductivity, DOC, CDOM, stable water isotopes and major ions of Lena River water from April 2018 to April 2019. PANGAEA, https://doi.org/10.1594/PANGAEA.913196, In: Juhls, B et al. (2020): Lena River surface water monitoring near the Samoylov Island Research Station. PANGAEA, https://doi.org/10.1594/PANGAEA.913197

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Abstract:
A number of studies expect an increase of carbon export by rivers to the Arctic Ocean due to rapidly changing climate in the Arctic
One possible reason for the increase of carbon export is thawing permafrost, which can lead to a mobilization of previously frozen dissolved organic matter (DOM). Scarce measurements of DOC and the coloured fraction of DOM (CDOM) (< 8 samples/year) were previously used to estimate fluxes to the Arctic Ocean for the whole year.
Here, we present a new high frequency sampling program and its viability to monitor export fluxes of DOM and its biogeochemistry in the Lena River. This dataset includes measurements of several water parameters, such as temperature, electric conductivity, dissolved organic carbon (DOC), spectral CDOM absorption (aCDOM), stable water isotopes and major ions.
The high sampling frequency throughout the whole year facilitats the identification of the main drivers behind the seasonality of DOM concentration and biogeochemistry of the Lena River.
The high number of samples throughout the whole year allows flux calculations that are independently from load models that likely lead to a large variation of earlier studies. Optical indices reveal changing composition and sources of DOM throughout the year.
This dataset represents the first year (April 2018 to April 2019) of a planned long-term monitoring program at the Research Station Samoylov Island and provides a baseline data set against which future change of this large integrative system may be measured. A continuous sampling of Arctic River water will facilitate to identify intra and inter-annual trends with ongoing climate change.
Keyword(s):
biogeochemistry; CDOM; DOC; DOM; major ions; stable water isotopes
Supplement to:
Juhls, Bennet; Stedmon, Colin A; Morgenstern, Anne; Meyer, Hanno; Hölemann, Jens A; Heim, Birgit; Povazhnyi, Vasily; Overduin, Pier Paul (2020): Identifying drivers behind the seasonality of Lena River biogeochemistry and dissolved organic matter fluxes. Frontiers in Environmental Science, https://doi.org/10.3389/fenvs.2020.00053
Coverage:
Latitude: 72.367977 * Longitude: 126.459550
Date/Time Start: 2018-04-20T21:00:00 * Date/Time End: 2019-04-06T13:00:00
Minimum DEPTH, water: m * Maximum DEPTH, water: m
Event(s):
Olenekskaya_Ch * Latitude: 72.367977 * Longitude: 126.459550 * Method/Device: Sampling river (RIVER)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1IdentificationIDJuhls, Bennet
2DATE/TIMEDate/TimeJuhls, BennetGeocode
3Latitude of eventLatitude
4Longitude of eventLongitude
5DEPTH, waterDepth watermJuhls, BennetGeocode
6Temperature, waterTemp°CJuhls, BennetHandheld meter Cond 340i, WTW
7Conductivity, electricalCond electrµS/cmJuhls, BennetHandheld meter Cond 340i, WTW
8δ18O, waterδ18O H2O‰ SMOWMeyer, HannoMass spectrometer Finnigan Delta-S/equilibration devicevs V-SMOW
9δ Deuterium, waterδD H2O‰ SMOWMeyer, HannoMass spectrometer Finnigan Delta-S/equilibration devicevs V-SMOW
10Deuterium excessd xsMeyer, HannoCalculatedd-excess = δD-8*δ18O
11Carbon, organic, dissolvedDOCmg/lOverduin, Pier PaulShimadzu TOC-VCPH total organic carbon analyzer
12AluminiumAlµg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
13Barium 2+Ba2+µg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
14CalciumCa2+mg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
15IronFeµg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
16PotassiumK+mg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
17MagnesiumMg2+mg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
18ManganeseMnµg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
19SodiumNa+mg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
20PhosphorusPmg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
21SiliconSimg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
22Strontium 2+Sr2+µg/lOverduin, Pier PaulICP-OES, Perkin-Elmer, Optima 8300DV
23FluorideF-mg/lOverduin, Pier PaulIon chromatography (Thermo-Fischer ICS 2100)
24ChlorideCl-mg/lOverduin, Pier PaulIon chromatography (Thermo-Fischer ICS 2100)
25Sulfate[SO4]2-mg/lOverduin, Pier PaulIon chromatography (Thermo-Fischer ICS 2100)
26BromideBr-mg/lOverduin, Pier PaulIon chromatography (Thermo-Fischer ICS 2100)
27Nitrate[NO3]-mg/lOverduin, Pier PaulIon chromatography (Thermo-Fischer ICS 2100)
28Phosphate[PO4]3-mg/lOverduin, Pier PaulIon chromatography (Thermo-Fischer ICS 2100)
29Specific ultraviolet absorbance normalized to DOCSUVA norm DOCm2/gJuhls, BennetCalculated[m²/g C]
30Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(200)
31Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(201)
32Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(202)
33Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(203)
34Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(204)
35Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(205)
36Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(206)
37Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(207)
38Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(208)
39Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(209)
40Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(210)
41Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(211)
42Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(212)
43Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(213)
44Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(214)
45Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(215)
46Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(216)
47Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(217)
48Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(218)
49Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(219)
50Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(220)
51Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(221)
52Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(222)
53Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(223)
54Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(224)
55Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(225)
56Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(226)
57Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(227)
58Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(228)
59Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(229)
60Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(230)
61Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(231)
62Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(232)
63Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(233)
64Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(234)
65Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(235)
66Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(236)
67Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(237)
68Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(238)
69Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(239)
70Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(240)
71Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(241)
72Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(242)
73Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(243)
74Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(244)
75Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(245)
76Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(246)
77Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(247)
78Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(248)
79Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(249)
80Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(250)
81Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(251)
82Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(252)
83Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(253)
84Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(254)
85Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(255)
86Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(256)
87Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(257)
88Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(258)
89Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(259)
90Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(260)
91Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(261)
92Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(262)
93Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(263)
94Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(264)
95Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(265)
96Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(266)
97Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(267)
98Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(268)
99Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(269)
100Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(270)
101Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(271)
102Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(272)
103Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(273)
104Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(274)
105Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(275)
106Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(276)
107Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(277)
108Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(278)
109Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(279)
110Absorption coefficient of colored dissolved organic matter at given wavelengthacCDOM1/mJuhls, BennetSpectrophotometer UV/VIS (PerkinElmer Lambda 950)aCDOM(280)
111