Colored dissolved organic matter of lakes and coastal sites in the MacKenzie River Delta in summer 2018

• Main Authors: Bussmann, Ingeborg, Nehir, Münevver, Overduin, Pier Paul
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Absorption coefficient; colored dissolved organic matter at 200 nm; colored dissolved organic matter at 201 nm; colored dissolved organic matter at 202 nm; colored dissolved organic matter at 203 nm; colored dissolved organic matter at 204 nm; colored dissolved organic matter at 205 nm; colored dissolved organic matter at 206 nm; colored dissolved organic matter at 207 nm; colored dissolved organic matter at 208 nm; colored dissolved organic matter at 209 nm; colored dissolved organic matter at 210 nm; colored dissolved organic matter at 211 nm; colored dissolved organic matter at 212 nm; colored dissolved organic matter at 213 nm; colored dissolved organic matter at 214 nm; colored dissolved organic matter at 215 nm; colored dissolved organic matter at 216 nm; colored dissolved organic matter at 217 nm; colored dissolved organic matter at 218 nm; colored dissolved organic matter at 219 nm; colored dissolved organic matter at 220 nm; colored dissolved organic matter at 221 nm; colored dissolved organic matter at 222 nm; colored dissolved organic matter at 223 nm; colored dissolved organic matter at 224 nm; Mackenzie river
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.917287; https://doi.org/10.1594/PANGAEA.917287

Water samples were taken at the surface and the bottom in transects crossing the lake or coastal site from locations with observed erosion to presumably undisturbed locations. The water sampler (1.5 L Uwitec, Austria) was attached to a graduated rope, lowered by hand and filled twice. Combined water samples were transferred to 2 L Nalgene bottles, filled to the top and subsampled at the field station for further analysis. Water samples for colored dissolved organic matter (cDOM) were filtered through a pre-rinsed disposable syringe with a GF/F filter of 0.7 μm pore size. For cDOM, about 40 ml of filtrate was filled into dark glass bottles and placed in cool storage. Absorption by CDOM was measured at the German Research Centre for Geosciences (GFZ), Potsdam, Germany using a LAMBDA 158 950 UV/Vis (PerkinElmer). The median absorbance of three replicate measurements was used to calculate the absorption. Fresh Milli-Q water was used as reference.