Dr. Björn Weeser

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+49 641 99 12705

+49 641 99 12709

Bjoern.Weeser

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Björn Weeser manages the SDGnexus Network – a global community of universities, research centers, and stakeholders committed to promoting the Agenda 2030 for sustainable development. As part of the DAAD “Higher Education Excellence in Development Cooperation – exceed” program the SDGnexus Network aims to strengthen higher education to facilitate the development of effective and innovative contributions to achieving the sustainable development goals (SDGs) of the United Nations.

He holds a doctoral degree in Hydrology and possesses academic backgrounds in both Environmental Management and Environmental Engineering. His research focuses on tropical catchments, specifically integrating hydrogeochemical modeling with crowdsourced measurements, geospatial data analysis, and water resource monitoring.

In 2021, he and Dr Suzanne Jacobs won the €50,000 Water Monitoring Prize 2020 of the Dr Erich Ritter Foundation and the Water Science Alliance.

• Hydrology
• Geoinformatic

• SDGnexus Network
• PI HydroCrowd

• Mitze, Fabian; Jacobs, Suzanne Robin; Breuer, Lutz; Campos Zeballos, Jazmin; Dowling, Thomas P. F.; Weeser, Björn (2026): Bias correction of ERA5-Land air temperature in remote tropical regions using participatory monitoring data. In Front. Environ. Sci. 14, Article 1859873. DOI: 10.3389/fenvs.2026.1859873.
• Mitze, Fabian; Jacobs, Suzanne Robin; Breuer, Lutz; Zeballos, Jazmin Campos; Codalli, Fabia; Shagega, Frank Paul; Weeser, Björn (2026): Validation of analog sensor measurements in hydrometeorological participatory monitoring in various tropical countries. In Front. Earth Sci. 14, Article 1721642. DOI: 10.3389/feart.2026.1721642.
• Muzammil, Muhammad; Breuer, Lutz; Farooq, Umar; Frank, Natasha; Weeser, Björn; Correa, Alicia (2026): Water resources under climate change: Strategies for sustainable agriculture in Colombia. In Agricultural Water Management 334, p. 110712. DOI: 10.1016/j.agwat.2026.110712.
• Marinelli, Bryan; Lutz, Arthur; Breuer, Lutz; Weeser, Björn; Khanal, Sonu; Condom, Thomas; Correa, Alicia (2025): Assessing the contribution of meltwater to meet environmental flow requirements during drought events in the Andean Santa River basin. In Journal of Hydrology: Regional Studies 58, p. 102248. DOI: 10.1016/j.ejrh.2025.102248.
• Mitze, Fabian; Jacobs, Suzanne R.; Breuer, Lutz; Zeballos, Jazmin Campos; Weeser, Björn (2025): Evaluating hydrological model performance using varying amounts of participatory monitoring water level data. In PLOS Water 4 (9), e0000405. DOI: 10.1371/journal.pwat.0000405.
• Zeballos, Jazmin Campos; Valencia, Jefferson; Codalli, Fabia; Mitze, Fabian; Shagega, Frank; Weeser, Björn; Jacobs, Suzanne R. (2025): Evaluating participatory monitoring in mountainous tourist regions. In Front. Environ. Sci. 13, Article 1537278. DOI: 10.3389/fenvs.2025.1537278.
• Lehmann, Marco M.; Geris, Josie; van Meerveld, Ilja; Penna, Daniele; Rothfuss, Youri; Verdone, Matteo et al. (2024): Soil and stem xylem water isotope data from two pan-European sampling campaigns.
• Khan, Zarrar; Abraham, Edo; Aggarwal, Srijan; Ahmad Khan, Manal; Arguello, Ricardo; Babbar-Sebens, Meghna et al. (2022): Emerging Themes and Future Directions of Multi-Sector Nexus Research and Implementation. In Front. Environ. Sci. 10, Article 918085. DOI: 10.3389/fenvs.2022.918085.
• Rufino, Mariana C; Ran, A. M.; Stenfert Kroese, J.; Ombogoh, D.; Jacobs, Suzanne R.; Weeser, Björn et al. (2022): Forests, water and land health are the natural capital of African montane forest ecosystems: Center for International Forestry Research (CIFOR).
• Jacobs, Suzanne R.; Weeser, Björn; Rufino, Mariana C.; Breuer, Lutz (2021): Hydrologische Prozesse in ostafrikanischen tropischen Einzugsgebieten unter dem Einfluss der Landnutzung. DOI: 10.5675/HYWA_2021.6_2.
• Njue, Naomi; Gräf, Jan; Weeser, Björn; Rufino, Mariana C.; Breuer, Lutz; Jacobs, Suzanne R. (2021): Monitoring of Suspended Sediments in a Tropical Forested Landscape With Citizen Science. In Front. Water 3, Article 656770. DOI: 10.3389/frwa.2021.656770.
• Weeser, Björn; Gräf, Jan; Njue, Naomi K.; Cerutti, Paolo; Rufino, Mariana C.; Breuer, Lutz; Jacobs, Suzanne R. (2021): Crowdsourced Water Level Monitoring in Kenya’s Sondu-Miriu Basin—Who Is “The Crowd”? In Front. Earth Sci. 8, Article 602422. DOI: 10.3389/feart.2020.602422.
• Jacobs, Suzanne R.; Weeser, Björn; Rufino, Mariana C.; Breuer, Lutz (2020): Diurnal Patterns in Solute Concentrations Measured with In Situ UV-Vis Sensors: Natural Fluctuations or Artefacts? In Sensors (Basel, Switzerland) 20 (3). DOI: 10.3390/s20030859.
• Njue, N.; Stenfert Kroese, J.; Gräf, J.; Jacobs, S. R.; Weeser, Björn; Breuer, Lutz; Rufino, Mariana C. (2019): Citizen science in hydrological monitoring and ecosystem services management: State of the art and future prospects. In The Science of the total environment 693, p. 133531. DOI: 10.1016/j.scitotenv.2019.07.337.
• Weeser, Björn; Jacobs, Suzanne R.; Kraft, P.; Rufino, Mariana C.; Breuer, Lutz (2019): Rainfall‐Runoff Modeling Using Crowdsourced Water Level Data. In Water Resources Research 55 (12), pp. 10856–10871. DOI: 10.1029/2019wr025248.
• Jacobs, Suzanne R.; Timbe, Edison; Weeser, Björn; Rufino, Mariana C.; Butterbach-Bahl, Klaus; Breuer, Lutz (2018): Assessment of hydrological pathways in East African montane catchments under different land use. In Hydrol. Earth Syst. Sci. 22 (9), pp. 4981–5000. DOI: 10.5194/hess-22-4981-2018.
• Jacobs, Suzanne R.; Weeser, Björn; Guzha, Alphonce C.; Rufino, Mariana C.; Butterbach‐Bahl, Klaus; Windhorst, David; Breuer, Lutz (2018): Using High‐Resolution Data to Assess Land Use Impact on Nitrate Dynamics in East African Tropical Montane Catchments. In Water Resources Research 54 (3), pp. 1812–1830. DOI: 10.1002/2017WR021592.
• Rufino, M; Weeser, Björn; Stenfert Kroese, J; Njue, N; Gräf, J; Jacobs, Suzanne R et al. (2018): Citizen scientists monitor water quantity and quality in Kenya: Center for International Forestry Research (CIFOR).
• Weeser, Björn; Stenfert Kroese, J.; Jacobs, S. R.; Njue, N.; Kemboi, Z.; Ran, A. et al. (2018): Citizen science pioneers in Kenya - A crowdsourced approach for hydrological monitoring. In The Science of the total environment 631-632, pp. 1590–1599. DOI: 10.1016/j.scitotenv.2018.03.130.