Scientist (Earth System Assimilation)
Research, Earth System Assimilation, Actively Sensed Observations
Summary:
Katrin Lonitz is working on the assimilation of GNSS-RO data as part of ROMSAF. Previously, she has been working on the all-sky assimilation (assimilation under clear, cloudy and rainy conditions) of microwave imager radiances.
Professional interests:
- assimilation of GNSS-RO data
- observation operator
- combination of observations with numerical models
- clouds and precipitation
- all-sky assimilation of microwave radiances
Career background:
08/2020 - today Research Scientist
04/2014 - 07/2020 EUMETSAT fellow at ECMWF
02/2014 - 03/2014 PostDoc, Max Planck Institute for Meteorology in Hamburg (Germany)
06/2010 - 01/2014 Doctoral Student, Max Planck Institute for Meteorology in Hamburg (Germany)
04/2010 - 05/2010 Research Assistant on board of R/V Polarstern cruise trip ANT-XXVI/4 from Punta Arenas (Chile) to Bremerhaven (Germany)
10/2004 - 03/2010 Diploma student, University of Leipzig (Germany)
- 2024
- (April 2024) Methods for assessing the impact of current and future components of the global observing system, ECMWF Technical Memoranda n. 916. DOI: 10.21957/2f240fe55f
- 2022
- Katrin Lonitz, Alan Geer, Niels Bormann (March 2022) Towards assimilating surface sensitive microwave channels over land, EUMETSAT/ECMWF Fellowship Programme Research Report n. 58. DOI: 10.21957/gdwqzfns
- Alan Geer, Katrin Lonitz, David I. Duncan, Niels Bormann (April 2022) Improved surface treatment for all-sky microwave observations, ECMWF Technical Memoranda n. 894. DOI: 10.21957/zi7q6hau
- Katrin Lonitz, Alan Geer, David I. Duncan, Niels Bormann (April 2022) Developing an all-surface capability for all‑sky microwave radiances, ECMWF Newsletter, issue 171, pp. 23-27. DOI: 10.21957/ag94h613vk
- 2021
- Katrin Lonitz, Neill Bowler, Elias Hólm, Sean Healy (October 2021) Assimilating Spire and COSMIC-2 data into the IFS, ECMWF Newsletter, issue 169, pp. 25-32. DOI: 10.21957/kn41xab96l
- Katrin Lonitz, C. Marquardt, Neill Bowler, Sean Healy (November 2021) Final Technical Note of 'Impact assessment of commercial GNSS-RO data', ESA Contract Report 4000131086/20/NL/FF/a. DOI: 10.21957/wrh6voyyi
- 2020
- Katrin Lonitz, Alan Geer (May 2020) Reducing the drying effect through a water vapour correction to the all-sky error model, EUMETSAT/ECMWF Fellowship Programme Research Reports n. 53. DOI: 10.21957/qmy8utbgb
- 2019
- Alan Geer, Niels Bormann, Katrin Lonitz, Peter Weston, Richard Forbes, Stephen English (November 2019) Recent progress in all‑sky radiance assimilation, ECMWF Newsletter, issue 161, pp. 20-25. DOI: 10.21957/mb31c8ag74
- 2017
- Alan Geer, Maike Ahlgrimm, Peter Bechtold, Massimo Bonavita, Niels Bormann, Stephen English, Mark Fielding, Richard Forbes, Robin Hogan, Elias Hólm, Marta Janiskova, Katrin Lonitz, Philippe Lopez, Marco Matricardi, irina sandu, P. Weston (April 2017) Assimilating observations sensitive to cloud and precipitation, ECMWF Technical Memoranda n. 815. DOI: 10.21957/sz7cr1dym
- Peter Lean, Alan Geer, Katrin Lonitz (April 2017) Assimilation of Global Precipitation Mission (GPM) Microwave Imager (GMI) in all-sky conditions, ECMWF Technical Memoranda n. 799. DOI: 10.21957/8orc7sn33
- 2016
- Richard Forbes, Alan Geer, Katrin Lonitz, Maike Ahlgrimm (April 2016) Reducing systematic errors in cold-air outbreaks, ECMWF Newsletter, issue 146, pp. 17-22. DOI: 10.21957/s41h7q7l