Ursula Gessner

33 papers C 4Journal 26Unranked 3
YearRankTypeTitle / Venue / Authors
2025 J jnl
Combining Machine Learning and Spatiotemporal Filtering to Map Crop Types of Germany for Seven Years.
IEEE Geosci. Remote. Sens. Lett.
Ursula Gessner, Andreas Hirner, Sarah Asam, Martina Wenzl, Claudia Kuenzer
2024 — conf
A multi-talented datacube: integrating, processing and presenting big geodata for the agricultural end user.
GIL
Christoph Friedrich, Johannes Löw, Insa Otte, Steven Hill, Sebastian Förtsch, Jakob Schwalb-Willmann, Ursula Gessner, Christoph Schierghofer, Sina C. Truckenbrodt, Eric Schonert, Thomas Piernicke, Denise Assmann, Christopher Conrad, Michael Thiel
2024 J jnl
Cropland and Crop Type Classification with Sentinel-1 and Sentinel-2 Time Series Using Google Earth Engine for Agricultural Monitoring in Ethiopia.
Remote. Sens.
Christina Eisfelder, Bruno Boemke, Ursula Gessner, Patrick Sogno, Genanaw Alemu, Rahel Hailu, Christian Mesmer, Juliane Huth
2023 J jnl
Earth-Observation-Based Monitoring of Forests in Germany - Recent Progress and Research Frontiers: A Review.
Remote. Sens.
Stefanie Holzwarth, Frank Thonfeld, Patrick Kacic, Sahra Abdullahi, Sarah Asam, Kjirsten Coleman, Christina Eisfelder, Ursula Gessner, Juliane Huth, Tanja Kraus, Christopher Shatto, Birgit Wessel, Claudia Kuenzer
2023 J jnl
Forest Structure Characterization in Germany: Novel Products and Analysis Based on GEDI, Sentinel-1 and Sentinel-2 Data.
Remote. Sens.
Patrick Kacic, Frank Thonfeld, Ursula Gessner, Claudia Kuenzer
2023 J jnl
Seasonal Vegetation Trends for Europe over 30 Years from a Novel Normalised Difference Vegetation Index (NDVI) Time-Series - The TIMELINE NDVI Product.
Remote. Sens.
Christina Eisfelder, Sarah Asam, Andreas Hirner, Philipp Reiners, Stefanie Holzwarth, Martin Bachmann, Ursula Gessner, Andreas J. Dietz, Juliane Huth, Felix Bachofer, Claudia Kuenzer
2023 J jnl
Vegetation Stress Monitor - Assessment of Drought and Temperature-Related Effects on Vegetation in Germany Analyzing MODIS Time Series over 23 Years.
Remote. Sens.
Ursula Gessner, Sophie Reinermann, Sarah Asam, Claudia Kuenzer
2022 J jnl
A First Assessment of Canopy Cover Loss in Germany's Forests after the 2018-2020 Drought Years.
Remote. Sens.
Frank Thonfeld, Ursula Gessner, Stefanie Holzwarth, Jennifer Kriese, Emmanuel Da Ponte, Juliane Huth, Claudia Kuenzer
2022 J jnl
Deep Learning on Synthetic Data Enables the Automatic Identification of Deficient Forested Windbreaks in the Paraguayan Chaco.
Remote. Sens.
Jennifer Kriese, Thorsten Hoeser, Sarah Asam, Patrick Kacic, Emmanuel Da Ponte Canova, Ursula Gessner
2022 J jnl
Detection of Grassland Mowing Events for Germany by Combining Sentinel-1 and Sentinel-2 Time Series.
Remote. Sens.
Sophie Reinermann, Ursula Gessner, Sarah Asam, Tobias Ullmann, Anne Schucknecht, Claudia Kuenzer
2022 J jnl
Mapping Crop Types of Germany by Combining Temporal Statistical Metrics of Sentinel-1 and Sentinel-2 Time Series with LPIS Data.
Remote. Sens.
Sarah Asam, Ursula Gessner, Roger Almengor González, Martina Wenzl, Jennifer Kriese, Claudia Kuenzer
2022 J jnl
Spatial Transferability of Random Forest Models for Crop Type Classification Using Sentinel-1 and Sentinel-2.
Remote. Sens.
Aiym Orynbaikyzy, Ursula Gessner, Christopher Conrad
2021 J jnl
Potential and Challenges of Harmonizing 40 Years of AVHRR Data: The TIMELINE Experience.
Remote. Sens.
Stefan W. Dech, Stefanie Holzwarth, Sarah Asam, Thorsten Andresen, Martin Bachmann, Martin Böttcher, Andreas J. Dietz, Christina Eisfelder, Corinne Frey, Gerhard Gesell, Ursula Gessner, Andreas Hirner, Matthias Hofmann, Grit Kirches, Doris Klein, Igor Klein, Tanja Kraus, Detmar Krause, Simon Plank, Thomas Popp, Sophie Reinermann, Philipp Reiners, Sebastian Roessler, Thomas Ruppert, Alexander Scherbachenko, Ranjitha Vignesh, Meinhard Wolfmüller, Hendrik Zwenzner, Claudia Kuenzer
2021 C conf
Sentinel-1 and Sentinel-2 Time Series Breakpoint Detection as Part of the South African Land Degradation Monitor (SALDi).
IGARSS
Marcel Urban, Andreas Hirner, Jonas Ziemer, Marlin M. Mueller, Ursula Gessner, Jussi Baade, Buster Percy Mogonong, Theunis Morgenthal, Gregor Feig, Abel Ramoelo, Kai Heckel, Hilma S. Nghiyalwa, Christiane Schmullius
2021 J jnl
Using Sentinel-1 and Sentinel-2 Time Series for Slangbos Mapping in the Free State Province, South Africa.
Remote. Sens.
Marcel Urban, Konstantin Schellenberg, Theunis Morgenthal, Clémence Dubois, Andreas Hirner, Ursula Gessner, Buster Percy Mogonong, Zhenyu Zhang, Jussi Baade, Anneliza Collett, Christiane Schmullius
2020 J jnl
Analyzing Water Dynamics Based on Sentinel-1 Time Series - a Study for Dongting Lake Wetlands in China.
Remote. Sens.
Juliane Huth, Ursula Gessner, Igor Klein, Hervé Yésou, Xijun Lai, Natascha Oppelt, Claudia Kuenzer
2020 J jnl
Crop Type Classification Using Fusion of Sentinel-1 and Sentinel-2 Data: Assessing the Impact of Feature Selection, Optical Data Availability, and Parcel Sizes on the Accuracies.
Remote. Sens.
Aiym Orynbaikyzy, Ursula Gessner, Benjamin Mack, Christopher Conrad
2020 J jnl
Earth Observation Based Monitoring of Forests in Germany: A Review.
Remote. Sens.
Stefanie Holzwarth, Frank Thonfeld, Sahra Abdullahi, Sarah Asam, Emmanuel Da Ponte Canova, Ursula Gessner, Juliane Huth, Tanja Kraus, Benjamin F. Leutner, Claudia Kuenzer
2020 C conf
Earth Observation Strategies for Degradation Monitoring in South Africa with Sentinels - Results from the Spaces 2 Saldi-Project Year 1.
IGARSS
Christiane Schmullius, Marcel Urban, Andreas Hirner, Christian Berger, Konstantin Schellenberg, Abel Ramoelo, Izak P. J. Smit, Theunis Strydom, George Johannes Chirima, Theunis Morgenthal, Brigitte Melly, Ursula Gessner, Nosiseko Mashiyi, Andiswa Mlisa, Mahlatse Kganyago, Jussi Baade
2019 J jnl
The Effect of Droughts on Vegetation Condition in Germany: An Analysis Based on Two Decades of Satellite Earth Observation Time Series and Crop Yield Statistics.
Remote. Sens.
Sophie Reinermann, Ursula Gessner, Sarah Asam, Claudia Kuenzer, Stefan W. Dech
2019 J jnl
Validation of Earth Observation Time-Series: A Review for Large-Area and Temporally Dense Land Surface Products.
Remote. Sens.
Stefan Mayr, Claudia Kuenzer, Ursula Gessner, Igor Klein, Martin Rutzinger
2017 J jnl
Detection of Water Bodies from AVHRR Data - A TIMELINE Thematic Processor.
Remote. Sens.
Andreas J. Dietz, Igor Klein, Ursula Gessner, Corinne Myrtha Frey, Claudia Kuenzer, Stefan W. Dech
2017 J jnl
Identifying Droughts Affecting Agriculture in Africa Based on Remote Sensing Time Series between 2000-2016: Rainfall Anomalies and Vegetation Condition in the Context of ENSO.
Remote. Sens.
Karina Winkler, Ursula Gessner, Volker Hochschild
2017 J jnl
Monitoring Agricultural Expansion in Burkina Faso over 14 Years with 30 m Resolution Time Series: The Role of Population Growth and Implications for the Environment.
Remote. Sens.
Kim Knauer, Ursula Gessner, Rasmus Fensholt, Gerald Forkuor, Claudia Kuenzer
2016 J jnl
An ESTARFM Fusion Framework for the Generation of Large-Scale Time Series in Cloud-Prone and Heterogeneous Landscapes.
Remote. Sens.
Kim Knauer, Ursula Gessner, Rasmus Fensholt, Claudia Kuenzer
2016 C conf
Detection of inland water bodies with high temporal resolution - assessing dynamic threshold approaches.
IGARSS
Igor Klein, Ursula Gessner, Andreas J. Dietz, Patrick Leinenkugel, Stefan W. Dech, Claudia Kuenzer
2016 — conf
Establishing a Remote Sensing Science Center in Cyprus: First Year of Activities of ATHENA Project.
EuroMed (2)
Diofantos G. Hadjimitsis, Athos Agapiou, Vasiliki Lysandrou, Kyriacos Themistocleous, Branka Cuca, Argyro Nisantzi, Rosa Lasaponara, Nicola Masini, Marilisa Biscione, Gabriele Nolè, Ramon Brcic, Daniele Cerra, Michael Eineder, Ursula Gessner, Thomas Krauß, Gunter Schreier
2016 C conf
Impacts of socio-economic development and urbanization on natural resources - case studies from Africa.
IGARSS
Ursula Gessner, Kim Knauer, Miriam Machwitz, Stefan W. Dech, Claudia Kuenzer
2015 J jnl
Modelling the Gross Primary Productivity of West Africa with the Regional Biomass Model RBM+, using optimized 250 m MODIS FPAR and fractional vegetation cover information.
Int. J. Appl. Earth Obs. Geoinformation
Miriam Machwitz, Ursula Gessner, Christopher Conrad, Ulrike Falk, Jochen Richters, Stefan W. Dech
2014 J jnl
Evaluation of seasonal water body extents in Central Asia over the past 27 years derived from medium-resolution remote sensing data.
Int. J. Appl. Earth Obs. Geoinformation
Igor Klein, Andreas J. Dietz, Ursula Gessner, Anastassiya Galayeva, Akhan Myrzakhmetov, Claudia Kuenzer
2013 J jnl
Intercomparison of Leaf Area Index Products for a Gradient of Sub-Humid to Arid Environments in West Africa.
Remote. Sens.
Ursula Gessner, Markus Niklaus, Claudia Kuenzer, Stefan W. Dech
2009 J jnl
On the Suitability of MODIS Time Series Metrics to Map Vegetation Types in Dry Savanna Ecosystems: A Case Study in the Kalahari of NE Namibia.
Remote. Sens.
Christian Hüttich, Ursula Gessner, Martin Herold, Ben J. Strohbach, Michael Schmidt, Manfred Keil, Stefan W. Dech
2008 — conf
A Multi-Scale Approch for Retreiving Proportional Cover of Life Forms.
IGARSS (3)
Ursula Gessner, Christopher Conrad, Christian Hüttich, Manfred Keil, Michael Schmidt, Matthias Schramm, Stefan W. Dech