Model based impact analysis of policy options aiming at reducing diffuse pollution by agriculture–a case study for the river Ems and a sub-catchment of the Rhine. - Horst Gömann; Peter Kreins; Ralf Kunkel; Frank Wendland (Environ. Model. Softw., 2005)

Multispectral remotely sensed data in modelling the annual variability of nitrate concentrations in the leachate. - Carsten Montzka; Morton J. Canty; Peter Kreins; Ralf Kunkel; Gunter Menz; Harry Vereecken; Frank Wendland (Environ. Model. Softw., 2008)

TEODOOR - A Spatial Data Infrastructure for terrestrial observation data. - Ralf Kunkel; Jürgen Sorg; Olaf Kolditz; Karsten Rink; Jens Klump; Rainer Gasche; Frank Neidl (ICNSC, 2013)

The design of monitoring and data infrastructures - Applying a forward-thinking reference architecture. - Matthias Schroeder; Vivien Stender; Jens Klump; Joachim Wächter; Ralf Kunkel (ICNSC, 2013)

Enabling Quality Control of Sensor Web Observations. - Anusuriya Devaraju; Ralf Kunkel; Jürgen Sorg; Heye Bogena; Harry Vereecken (SENSORNETS, 2014)

Q-SOS - A Sensor Observation Service for Accessing Quality Descriptions of Environmental Data. - Anusuriya Devaraju; Simon Jirka; Ralf Kunkel; Jürgen Sorg (ISPRS Int. J. Geo Inf., 2015)

Conception and Implementation of an OGC-Compliant Sensor Observation Service for a Standardized Access to Raster Data. - Jürgen Sorg; Ralf Kunkel (ISPRS Int. J. Geo Inf., 2015)

Designing Transnational Hydroclimatological Observation Networks and Data Sharing Policies in West Africa. - Seyni Salack; Aymar Bossa; Jan Bliefernicht; Sina Berger; Yacouba Yira; Kamil A. Sanoussi; Samuel Guug; Dominikus Heinzeller; Adolphe S. Avocanh; Barro Hamadou; Symphorien Meda; Belko A. Diallo; et al. (Data Sci. J., 2019)

Digital ecosystem for FAIR time series data management in environmental system science. - Jan Bumberger; Martin Abbrent; Nils Brinckmann; Joost Hemmen; Ralf Kunkel; Christof Lorenz; Peter Lünenschloß; Bert Palm; Thomas Schnicke; Christian Schulz 017; Hylke van der Schaaf; David Schäfer (SoftwareX, 2025)