Temperature, electrical conductivity, DOC, CDOM, stable water isotopes and major ions of Lena River water from April 2018 to April 2019 ...

• Main Authors: Juhls, Bennet, Morgenstern, Anne, Chetverova, Antonina, Eulenburg, Antje, Hölemann, Jens A, Povazhnyi, Vasily, Overduin, Pier Paul
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: biogeochemistry; CDOM; DOC; DOM; major ions; stable water isotopes; Identification; DATE/TIME; Latitude of event; Longitude of event; DEPTH, water; Temperature, water; Conductivity, electrical; δ18O, water; δ Deuterium, water; Deuterium excess; Carbon, organic, dissolved; Aluminium; Barium 2+; Calcium; Iron; Potassium; Magnesium; Manganese; Sodium; Phosphorus; Silicon; Strontium 2+; Fluoride; Chloride; Sulfate; Bromide; Nitrate; Phosphate; Specific ultraviolet absorbance normalized to DOC; Absorption coefficient, colored dissolved organic matter at given wavelength; Sampling river; Handheld meter, WTW, 340i, Conductivity; Mass spectrometer Finnigan Delta-S/equilibration device; Calculated; Shimadzu TOC-VCPH total organic carbon analyzer; Inductively coupled plasma optical emission spectrometry ICP-OES, Perkin-Elmer, Optima 8300DV; Ion chromatography Thermo-Fischer ICS 2100; Spectrophotometer UV/VIS PerkinElmer Lambda 950; Arctic; Arctic Ocean; Lambda; lena river; permafrost
• Online Access: https://dx.doi.org/10.1594/pangaea.913196; https://doi.pangaea.de/10.1594/PANGAEA.913196

A number of studies expect an increase of carbon export by rivers to the Arctic Ocean due to rapidly changing climate in the ArcticOne 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 ...