Browsing NTNU Open by Author "de Wit, Heleen"
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Disaggregating the Carbon Exchange of Degrading Permafrost Peatlands Using Bayesian Deep Learning
Pirk, Norbert; Aalstad, Kristoffer; Holmlund, Erik Schytt; Clayer, Francois; de Wit, Heleen; Christiansen, Casper Tai; Althuizen, Inge; Lee, Hanna; Westermann, Sebastian (Journal article; Peer reviewed, 2024)Extensive regions in the permafrost zone are projected to become climatically unsuitable to sustain permafrost peatlands over the next century, suggesting transformations in these landscapes that can leave large amounts ... -
From greening to browning: Catchment vegetation development and reduced S-deposition promote organic carbon load on decadal time scales in Nordic lakes
Finstad, Anders Gravbrøt; Andersen, Tom; Larsen, Søren; Tominaga, Koji; Blumentrath, Stefan; de Wit, Heleen; Tømmervik, Hans; Hessen, Dag Olav (Journal article; Peer reviewed, 2016)Increased concentrations of dissolved organic carbon (DOC), often labelled “browning”, is a current trend in northern, particularly boreal, freshwaters. The browning has been attributed to the recent reduction in sulphate ... -
More Frequent Runoff and Connected Sources in Headwaters Promote Browning of Northern Freshwaters
Basso, Stefano; Musolff, Andreas; de Wit, Heleen (Peer reviewed; Journal article, 2024)Sustained browning of northern waters has prompted inquiries into the drivers of increasing concentrations of organic matter. While reduced sulfur deposition is a key cause, an increasing role of hydrologic mechanisms as ... -
Natural organic matter fractions and their removal in full-scale drinking water treatment under cold climate conditions in Nordic capitals
Krzeminski, Pawel; Vogelsang, Christian; Meyn, Thomas; Köhler, Stephan; Poutanen, Heikki; de Wit, Heleen; Uhl, Wolfgang (Journal article; Peer reviewed, 2019)Drinking water treatment plants (DWTPs) designed to remove natural organic matter (NOM) are challenged as concentrations of NOM in raw waters are increasing. Here, we assess seasonal differences in NOM quality and quantity, ...