Dr. Janina Klatt

Research assistant at the Peatland Science Centre

+49 8161 71-6265

Address: A1.415a
Am Hofgarten 1
85354 Freising
Functions: Contact person for the Climate-Relevant Trace Gases area of expertise
Staff member in the Emissions Calculation area of expertise

Publications

Journal articles (peer-reviewed)
- Bram Valkenborg, Gabriëlle J. M. De Lannoy, Alexander Gruber, Diego G. Miralles, Philipp Köhler, Christian Frankenberg, Ankur R. Desai, Elyn Humphreys, Janina Klatt, Annalea Lohila, Mats B. Nilsson, Eeva-Stiina Tuittila, Michel Bechtold
  
  Permissions: Open Access
  
  Permissions: Peer Reviewed
  
  Drought and Waterlogging Stress Regimes in Northern Peatlands Detected Through Satellite Retrieved Solar-Induced Chlorophyll Fluorescence (2023) Geophysical Research Letters 50 , S. 19. DOI: 10.1029/2023GL105205
  
  More
- Elodie Salmon, Fabrice Jégou, Bertrand Guenet, Line Jourdain, Chunjing Qiu, Vladislav Bastrikov, Christophe Guimbaud, Dan Zhu, Philippe Ciais, Philippe Peylin, Sébastien Gogo, Fatima Laggoun-Défarge, Mika Aurela, M. Syndonia Bret-Harte, Jiquan Chen, Bogdan H. Chojnicki, Housen Chu, Colin W. Edgar, Eugenie S. Euskirchen, Lawrence B. Flanagan, Krzysztof Fortuniak, David Holl, Janina Klatt, Olaf Kolle, Natalia Kowalska, Lars Kutzbach, Annalea Lohila, Lutz Merbold, Włodzimierz Pawlak, Torsten Sachs, Klaudia Ziemblińska
  
  Permissions: Open Access
  
  Permissions: Peer Reviewed
  
  Assessing methane emissions for northern peatlands in ORCHIDEE-PEAT revision 7020 (2022) Geoscientific Model Development 15 (7), S. 2813–2838. DOI: 10.5194/gmd-15-2813-2022
  
  More
- Kyle B. Delwiche, Sara H. Knox, Avni Malhotra, Etienne Fluet-Chouinard, Gavin McNicol, Sarah Feron, Zutao Ouyang, Dario Papale, Janina Klatt, (& coauthors) et al.
  
  Permissions: Open Access
  
  Permissions: Peer Reviewed
  
  FLUXNET-CH4: a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands (2021) Earth System Science Data 13 (7), S. 3607–3689. DOI: 10.5194/essd-13-3607-2021
  
  Methane (CH4) emissions from natural landscapes constitute roughly half of global CH4 contributions to the atmosphere, yet large uncertainties remain in the absolute magnitude and the seasonality of emission quantities and drivers. Eddy covariance (EC) measurements of CH4 flux are ideal for constraining ecosystem-scale CH4 emissions due to quasi-continuous and high-temporal-resolution CH4 flux measurements, coincident carbon dioxide, water, and energy flux measurements, lack of ecosystem disturbance, and increased availability of datasets over the last decade. Here, we (1) describe the newly published dataset, FLUXNET-CH4 Version 1.0, the first open-source global dataset of CH4 EC measurements (available at https://fluxnet.org/data/fluxnet-ch4-community-product/, last access: 7 April 2021). FLUXNET-CH4 includes half-hourly and daily gap-filled and non-gap-filled aggregated CH4 fluxes and meteorological data from 79 sites globally: 42 freshwater wetlands, 6 brackish and saline wetlands, 7 formerly drained ecosystems, 7 rice paddy sites, 2 lakes, and 15 uplands. Then, we (2) evaluate FLUXNET-CH4 representativeness for freshwater wetland coverage globally because the majority of sites in FLUXNET-CH4 Version 1.0 are freshwater wetlands which are a substantial source of total atmospheric CH4 emissions; and (3) we provide the first global estimates of the seasonal variability and seasonality predictors of freshwater wetland CH4 fluxes. Our representativeness analysis suggests that the freshwater wetland sites in the dataset cover global wetland bioclimatic attributes (encompassing energy, moisture, and vegetation-related parameters) in arctic, boreal, and temperate regions but only sparsely cover humid tropical regions. Seasonality metrics of wetland CH4 emissions vary considerably across latitudinal bands. In freshwater wetlands (except those between 20∘ S to 20∘ N) the spring onset of elevated CH4 emissions starts 3 d earlier, and the CH4 emission season lasts 4 d longer, for each degree Celsius increase in mean annual air temperature. On average, the spring onset of increasing CH4 emissions lags behind soil warming by 1 month, with very few sites experiencing increased CH4 emissions prior to the onset of soil warming. In contrast, roughly half of these sites experience the spring onset of rising CH4 emissions prior to the spring increase in gross primary productivity (GPP). The timing of peak summer CH4 emissions does not correlate with the timing for either peak summer temperature or peak GPP. Our results provide seasonality parameters for CH4 modeling and highlight seasonality metrics that cannot be predicted by temperature or GPP (i.e., seasonality of CH4 peak). FLUXNET-CH4 is a powerful new resource for diagnosing and understanding the role of terrestrial ecosystems and climate drivers in the global CH4 cycle, and future additions of sites in tropical ecosystems and site years of data collection will provide added value to this database. All seasonality parameters are available at https://doi.org/10.5281/zenodo.4672601 (Delwiche et al., 2021). Additionally, raw FLUXNET-CH4 data used to extract seasonality parameters can be downloaded from https://fluxnet.org/data/fluxnet-ch4-community-product/ (last access: 7 April 2021), and a complete list of the 79 individual site data DOIs is provided in Table 2 of this paper.
  More
- Jake E. Simpson, Fenner Holman, Hector Nieto, Ingo Voelksch, Matthias Mauder, Janina Klatt, Peter Fiener, Jed O. Kaplan
  
  Permissions: Open Access
  
  Permissions: Peer Reviewed
  
  High Spatial and Temporal Resolution Energy Flux Mapping of Different Land Covers Using an Off-the-Shelf Unmanned Aerial System (2021) Remote Sensing 13 (7), S. 1286 | 1-28. DOI: 10.3390/rs13071286
  
  More
- Alexander Graf, Anne Klosterhalfen, Nicola Arriga, Christian Bernhofer, Heye Bogena, Frédéric Bornet, Nicolas Brüggemann, Christian Brümmer, Nina Buchmann, Jinshu Chi, Christophe Chipeaux, Edoardo Cremonese, Matthias Cuntz, Jiří Dušek, Tarek S. El-Madany, Silvano Fares, Milan Fischer, Lenka Foltýnová, Mana Gharun, Shiva Ghiasi, Bert Gielen, Pia Gottschalk, Thomas Grünwald, Günther Heinemann, Bernard Heinesch, Michal Heliasz, Jutta Holst, Lukas Hörtnagl, Andreas Ibrom, Joachim Ingwersen, Gerald Jurasinski, Janina Klatt, Alexander Knohl, Franziska Koebsch, Jan Konopka, Mika Korkiakoski, Natalia Kowalska, Pascal Kremer, Bart Kruijt, Sebastien Lafont, Joël Léonard, Anne De Ligne, Bernard Longdoz, Denis Loustau, Vincenzo Magliulo, Ivan Mammarella, Giovanni Manca, Matthias Mauder, Mirco Migliavacca, Meelis Mölder, Johan Neirynck, Patrizia Ney, Mats B. Nilsson, Eugénie Paul-Limoges, Matthias Peichl, Andrea Pitacco, Arne Poyda, Corinna Rebmann, Marilyn Roland, Torsten Sachs, Marius Schmidt, Frederik Schrader, Lukas Siebicke, Ladislav Šigut, Eeva-Stiina Tuittila, Andrej Varlagin, Nadia Vendrame, Caroline Vincke, Ingo Völksch, Stephan Weber, Christian Wille, Hans-Dieter Wizmann, Matthias Zeemann, Harry Vereecken
  
  Permissions: Open Access
  
  Permissions: Peer Reviewed
  
  Altered energy partitioning across terrestrial ecosystems in the European drought year 2018 (2020) Philosophical Transactions B. 375 (1810). DOI: 10.1098/rstb.2019.0524
- Sara H. Knox, Robert B. Jackson, Benjamin Poulter, Gavin McNicol, Etienne Fluet-Chouinard, Zhen Zhang, Gustaf Hugelius, Philippe Bousquet, Josep G. Canadell, Marielle Saunois, Dario Papale, Housen Chu, Trevor F. Keenan, Dennis Baldocchi, Margaret S. Torn, Ivan Mammarella, Carlo Trotta, Mika Aurela, Gil Bohrer, David I. Campbell, Alessandro Cescatti, Samuel Chamberlain, Jiquan Chen, Weinan Chen, Sigrid Dengel, Ankur R. Desai, Eugenie S. Euskirchen, Thomas Friborg, Daniele Gasbarra, Ignacio Goded, Mathias Goeckede, Martin Heimann, Manuel Helbig, Takashi Hirano, David Y. Hollinger, Hiroki Iwata, Minseok Kang, Janina Klatt, Ken W. Krauss, Lars Kutzbach, Annalea Lohila, Bhaskar Mitra, Timothy H. Morin, Mats B. Nilsson, Shuli Niu, Asko Noormets, Walter C. Oechel, Matthias Peichl, Olli Peltola, Michele L. Reba, Andrew D. Richardson, Benjamin R. K. Runkle, Youngryel Ryu, Torsten Sachs, Karina V. R. Schäfer, Hans Peter Schmid, Narasinha Shurpali, Oliver Sonnentag, Angela C. I. Tang, Masahito Ueyama, Rodrigo Vargas, Timo Vesala, Eric J. Ward, Lisamarie Windham-Myers, Georg Wohlfahrt, Donatella Zona
  
  Permissions: Open Access
  
  Permissions: Peer Reviewed
  
  FLUXNET-CH4 Synthesis Activity: Objectives, Observations, and Future Directions (2019) Bulletin of the American Meteorological Society 100 (12), S. 2607–2632. DOI: 10.1175/BAMS-D-18-0268.1
  
  More
- Olli Peltola, Timo Vesala, Yao Gao, Olle Räty, Pavel Alekseychik, Mika Aurela, Bogdan H. Chojnicki, Ankur R. Desai, Albertus J. Dolman, Eugenie S. Euskirchen, Thomas Friborg, Mathias Goeckede, Manuel Helbig, Elyn Humphreys, Robert B. Jackson, Georg Jocher, Fortunat Joos, Janina Klatt, Sara H. Knox, Natalia Kowalska, Lars Kutzbach, Sebastian Lienert, Annalea Lohila, Ivan Mammarella, Daniel F. Nadeau, Mats B. Nilsson, Walter C. Oechel, Matthias Peichl, Thomas Pypker, William Quinton, Janne Rinne, Torsten Sachs, Mateusz Samson, Hans Peter Schmid, Oliver Sonnentag, Christian Wille, Donatella Zona, Tuula Aalto
  
  Permissions: Open Access
  
  Permissions: Peer Reviewed
  
  Monthly gridded data product of northern wetland methane emissions based on upscaling eddy covariance observations (2019) Earth System Science Data 11 (3), S. 1263–1289. DOI: 10.5194/essd-11-1263-2019
  
  More
- Michel Bechtold, G. J. M. De Lannoy, R.D. Koster, R.H. Reichle, S.P. Mahanama, W. Bleuten, M.A. Bourgault, Christian Brümmer, I. Burdun, Ankur R. Desai, K. Devito, Thomas Grünwald, M. Grygoruk, E. R. Humphreys, Janina Klatt, J. Kurbatova, Annalea Lohila, T. M. Munir, Mats B. Nilsson, J. S. Price, M. Röhl, A. Schneider, Bärbel Tiemeyer
  
  Permissions: Open Access
  
  Permissions: Peer Reviewed
  
  PEAT-CLSM: A Specific Treatment of Peatland Hydrology in the NASA Catchment Land Surface Model (2019) J. Advances in Modeling of Earth Systems (JAMES) 11 (7), S. 2130-2162. DOI: 10.1029/2018MS001574
- Ralf Kiese, B. Fersch, C. Baessler, C. Brosy, Klaus Butterbach-Bahl, C. Chwala, M. Dannenmann, J. Fu, R. Gasche, R. Grote, C. Jahn, Janina Klatt, Harald Kunstmann, Matthias Mauder, T. Rödiger, G. Smiatek, M. Soltani, R. Steinbrecher, Ingo Völksch, J. Werhahn, B. Wolf, Matthias Zeemann, Hans Peter Schmid
  
  Permissions: Open Access
  
  Permissions: Peer Reviewed
  
  The TERENO Pre-Alpine Observatory: Integrating Meteorological, Hydrological and Biogeochemical Measurements and Modeling (2018) Vadose Zone Journal . DOI: 10.2136/vzj2018.03.0060
- Chunjing Qiu, Dan Zhu, Philippe Ciais, Bertrand Guenet, Gerhard Krinner, Shushi Peng, Mika Aurela, Christian Bernhofer, Christian Brümmer, M. Syndonia Bret-Harte, Housen Chu, Jiquan Chen, Ankur R. Desai, Krzysztof Fortuniak, Lawrence B. Flanagan, Thomas Friborg, M. Grygoruk, Sébastien Gogo, Thomas Grünwald, Birger U. Hansen, David Holl, Elyn Humphreys, Miriam Hurkuck, Gerard Kiely, Janina Klatt, Lars Kutzbach, Chloé Largeron, Fatima Laggoun-Défarge, Magnus Lund, Peter M. Lafleur, Xuefei Li, Ivan Mammarella, Lutz Merbold, Mats B. Nilsson, Janusz Olejnik, Mikaell Ottosson-Löfvenius, Walter C. Oechel, Frans-Jan W. Parmentier, Matthias Peichl, Norbert Pirk, Olli Peltola, Włodzimierz Pawlak, Dominik Rasse, Janne Rinne, Gaius Shaver, Hans Peter Schmid, Matteo Sottocornola, Rainer Steinbrecher, Torsten Sachs, M. Urbaniak, Donatella Zona, Klaudia Ziemblińska
  
  Permissions: Open Access
  
  Permissions: Peer Reviewed
  
  ORCHIDEE-PEAT, a model for northern peatland CO2, water and energy fluxes on daily to annual scales (2018) Geoscientific Model Development 11 (2), S. 497-519. DOI: 10.5194/gmd-11-497-2018
All Journal articles (peer-reviewed)
Conference contributions
- Janina Klatt, H. P. Schmid, Matthias Drösler, P. Werle
  
  Natural bog pine ecosystem in southern Germany is a steady and robust sink of CO2 but a minor source of CH4 (2013) EGU General Assembly 15 .
Research data
- Gavin McNicol, Sarah Feron, Zutao Ouyang, Dario Papale, Janina Klatt, (& coauthors) et al., Kyle B. Delwiche, Sara H. Knox, Avni Malhotra, Etienne Fluet-Chouinard
  
  Permissions: Open Access
  
  FLUXNET-CH4: a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands (Appendix B and Figure 3) (2021) Zenodo . DOI: 10.5281/zenodo.4672601
  
  More
- Janina Klatt, Hans Peter Schmid, Matthias Mauder, Rainer Steinbrecher
  
  Permissions: Open Access
  
  FLUXNET2015 DE-SfN Schechenfilz Nord, Germany (2016) FLUXNET . DOI: 10.18140/FLX/1440219
Other publications
- Janina Klatt, Heta Meyer, Clarisse Brehier, Sebastian Friedrich, Alexander Gerner, Michael Tarantik, Gabriele Chiogna, Markus Disse, Margret Frischhut, Thomas Machl, Nadine Conze, Martin Herr, Jutta Kotzi, Anna Kühnel, Lena Reifschneider, Julian Welte, Gisbert Kuhn, Annette Freibauer, Verena Huber García, Thomas Ramsauer, Yueli Chen, Verena Kuch, Philip Marzahn, Ralf Ludwig, Matthias Drösler
  
  Permissions: Open Access
  
  Abschlussbericht Klimaschutz- und Anpassungspotenziale in Mooren Bayerns (KliMoBay) (2023) DOI: 10.5281/zenodo.10202687
  
  More

Research projects

Duration: 01.02.2024 – 31.01.2027

: Climate change
Modeling of greenhouse gas emissions from peatlands in Germany: merging statistical and process based model approaches (MODELPEAT)
The MODELPEAT project deals with innovative tools for the reliable estimation of greenhouse gas emissions from peatlands. …
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- Lead of collaborative projects: Prof. Dr. Matthias Drösler
Duration: 01.01.2022 – 31.12.2031

: Climate change
Moorland farming for climate protection Allgäu (MoLaKlim)
Under the management of the Ostallgäu District Office, the Peatland Science Center aims to further develop the necessary agricultural methods for managing moorland with the highest possible water …
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- General project lead HSWT: Prof. Dr. Matthias Drösler

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Dr. Janina Klatt

Publications

Journal articles (peer-reviewed)

Drought and Waterlogging Stress Regimes in Northern Peatlands Detected Through Satellite Retrieved Solar-Induced Chlorophyll Fluorescence (2023) Geophysical Research Letters 50 , S. 19. DOI: 10.1029/2023GL105205

Assessing methane emissions for northern peatlands in ORCHIDEE-PEAT revision 7020 (2022) Geoscientific Model Development 15 (7), S. 2813–2838. DOI: 10.5194/gmd-15-2813-2022

FLUXNET-CH4: a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands (2021) Earth System Science Data 13 (7), S. 3607–3689. DOI: 10.5194/essd-13-3607-2021

High Spatial and Temporal Resolution Energy Flux Mapping of Different Land Covers Using an Off-the-Shelf Unmanned Aerial System (2021) Remote Sensing 13 (7), S. 1286 | 1-28. DOI: 10.3390/rs13071286

Altered energy partitioning across terrestrial ecosystems in the European drought year 2018 (2020) Philosophical Transactions B. 375 (1810). DOI: 10.1098/rstb.2019.0524

FLUXNET-CH4 Synthesis Activity: Objectives, Observations, and Future Directions (2019) Bulletin of the American Meteorological Society 100 (12), S. 2607–2632. DOI: 10.1175/BAMS-D-18-0268.1

Monthly gridded data product of northern wetland methane emissions based on upscaling eddy covariance observations (2019) Earth System Science Data 11 (3), S. 1263–1289. DOI: 10.5194/essd-11-1263-2019

PEAT-CLSM: A Specific Treatment of Peatland Hydrology in the NASA Catchment Land Surface Model (2019) J. Advances in Modeling of Earth Systems (JAMES) 11 (7), S. 2130-2162. DOI: 10.1029/2018MS001574

The TERENO Pre-Alpine Observatory: Integrating Meteorological, Hydrological and Biogeochemical Measurements and Modeling (2018) Vadose Zone Journal . DOI: 10.2136/vzj2018.03.0060

ORCHIDEE-PEAT, a model for northern peatland CO2, water and energy fluxes on daily to annual scales (2018) Geoscientific Model Development 11 (2), S. 497-519. DOI: 10.5194/gmd-11-497-2018

Conference contributions

Natural bog pine ecosystem in southern Germany is a steady and robust sink of CO2 but a minor source of CH4 (2013) EGU General Assembly 15 .

Research data

FLUXNET-CH4: a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands (Appendix B and Figure 3) (2021) Zenodo . DOI: 10.5281/zenodo.4672601

FLUXNET2015 DE-SfN Schechenfilz Nord, Germany (2016) FLUXNET . DOI: 10.18140/FLX/1440219

Other publications

Abschlussbericht Klimaschutz- und Anpassungspotenziale in Mooren Bayerns (KliMoBay) (2023) DOI: 10.5281/zenodo.10202687

Research projects

Modeling of greenhouse gas emissions from peatlands in Germany: merging statistical and process based model approaches (MODELPEAT)

Moorland farming for climate protection Allgäu (MoLaKlim)