20.500.12556/DiRROS-29119 Online screening tool for precipitation stable isotopes records hybrid distance / density based outlier filtering approach via interactive web application The ratio between the heavy and light stable isotopes in precipitation is an effective tool for addressing questions in e.g., hydrology, climatology, biogeochemistry etc., but only if spatiotemporally sufficient data is available from precipitation monitoring networks. However, when data from multiple sources are gathered into large databases these can contain errors severely impacting research outcomes. The most common practices for stable isotopic database filtering apply static thresholds, not accounting for the spatially dynamically changing nature of the variable. We propose a distance-based outlier detection approach in the form of an online tool. The IsoQC App is developed to identify likely-outliers or inconsistent data points by deriving adjustable elevation-corrected average isotope values for nearby stations within an adjustable search radius (0 < R ≤ 500 km). The IsoQC is showcased on the records of the precipitation stable isotope network of Slovenia and its vicinity. It enables an objective and reproducible analysis of spatial and temporal patterns of nearby precipitation stable isotopic records by employing thresholds for dissimilarity between regional averages and individual station records in a dynamic graphical user interface. The interactive nature of the application allows users to explore spatial and temporal variations in precipitation isotope compositions, identify anomalous data points, and empirically assess regional isotope patterns in real time. The developed IsoQC tool is freely available at https://sapps.geochem.hu/isoqc/ isotope composition datasets spatiotemporal data web application izotopska sestava zbirke podatkov prostorsko-časovni podatki spletna aplikacija true false true Elsevier Nizozemska Angleški jezik Slovenski jezik © 2026 The Authors. Neznano 2026-04-21 11:31:58 2026-04-21 11:31:59 2026-04-22 04:04:12 0000-00-00 00:00:00 2026 0 0 Nasl. z nasl. zaslona; Soavtorji: Dániel Erdélyi, Polona Vreča, Sonja Lojen, Klara Žagar, Jan Gačnik, Zoltán Kern; Opis vira z dne 16. 4. 2026; str. 1-13 Vol. 672, [article no.] 135401 Jun. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-04-29 2026-03-24 2026-03-25 543 1879-2707 10.1016/j.jhydrol.2026.135401 275513859 https://www.sciencedirect.com/science/article/pii/S0022169426004981?via%3Dih 1 f5f2a5aa-3d64-11f1-a343-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43502 RAZ_Hatvani_Istvan_Gabor_2026.pdf RAZ_Hatvani_Istvan_Gabor_2026.pdf 1 A912713A1B230F2CB8D1B2B38419A566 72a38e551048d0aa382589b29553488a42a5e258f904100fd0d0490895596e44 551c3949-3d65-11f1-a343-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43505 Institut Jožef Stefan 0 0 0