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Cross-Scale Terrestrial Ecophysiology (XTE)

Jacob A. Nelson

Group description

The Cross-Scale Terrestrial Ecophysiology (XTE) group is focused on taking understanding gained from on the ground measurements into the context of broad scale carbon, water and energy cycles, via knowledge guided, data driven methodologies. Key aims include:

  • Foster and utilize global and regional measurement networks
  • Synthesize ecophysiological understanding from direct ecosystem measurements
  • Develope data driven models guided by mechanistic understanding
  • Global and reagional analysis of carbon, water, and energy cycles

News and Updates

November 2024


This month sees the final publication of the innogural FLUXCOM-X paper:

X-BASE: the first terrestrial carbon and water flux products from an extended data-driven scaling framework, FLUXCOM-X

With Sophia Walther, Martin Jung, the FLUXCOM tean, and an international group of researchers, we demonstrate the newest global carbon and water flux products (X-BASE). Big thanks to everyone involved.

October 2024


Big congratulations to Weijie Zhang for successfully defending his PhD. Dr. Zhang publicly defended at Ghent University, and a big thanks to Diego Miralles and company for hosting Weijie through the PhD process and throwing a very nice part. Also big thanks to the committee.

Weijie starts a new position in Berkeley at the end of the month, which while sad for us is an exciting new chapter in his academic career. You will be sorely missed, so thanks again, it's been a pleasure working with you.

September 2024


This month was the ICOS Scientific Conference 2024, and really enjoyed the excellent science and invigorating discussions. Many new avenues to pursue and connections made!

Team

Deep Prakash Sarkar

Doctoral Researcher

Xiuzhi Chen

Doctoral Researcher
C3.009b

Sinikka Jasmin Paulus

Doctoral Researcher
+49 3641 57-6232
University of Freiburg - Herderbau Room 03053

Jakob Lambert-Hartmann

Bachelor Student
C1.024

Associated and guest members

Yucong Hu

Doctoral Researcher

Luca Tuzzi

Doctoral Researcher
C1.024

Kai-Hendrik Cohrs

Doctoral Researcher

Projects

EO-LINCS
EO-LINCS (Earth Observation, Local and Integrated data eNquiry for Terrestrial Carbon Science) promotes a community effort towards an enhanced multi-mission assessment of the terrestrial carbon cycle at resolutions in space and time compatible with decision making by improving the access to the Earth Observation (EO) data for the wider carbon scientific community so that key questions related to scale, representativeness, consistency, reliability, as well as the applicability of the multivariate EO data and how they affect our understanding of the carbon cycle processes across spatial and temporal scales can be addressed. more
FLUXCOM
An initiative to upscale biosphere-atmosphere fluxes from FLUXNET sites to continental and global scales more

Publications

Journal Article (10)

1.
Journal Article
Nelson*, J. A.; Walther*, S.; Gans, F.; Kraft, B.; Weber, U.; Novick, K.; Buchmann, N.; Migliavacca, M.; Wohlfahrt, G.; Šigut, L. et al.; Ibrom, A.; Papale, D.; Göckede, M.; Duveiller, G.; Knohl, A.; Hörtnagl, L.; Scott, R. L.; Zhang, W.; Hamdi, Z. M.; Reichstein, M.; Aranda-Barranco, S.; Ardö, J.; Op de Beeck, M.; Billdesbach, D.; Bowling, D.; Bracho, R.; Brümmer, C.; Camps-Valls, G.; Chen, S.; Cleverly, J. R.; Desai, A.; Dong, G.; El-Madany, T. S.; Euskirchen, E. S.; Feigenwinter, I.; Galvagno, M.; Gerosa, G.; Gielen, B.; Goded, I.; Goslee, S.; Gough, C. M.; Heinesch, B.; Ichii, K.; Jackowicz-Korczynski, M. A.; Klosterhalfen, A.; Knox, S.; Kobayashi, H.; Kohonen, K.-M.; Korkiakoski, M.; Mammarella, I.; Mana, G.; Marzuoli, R.; Matamala, R.; Metzger, S.; Montagnani, L.; Nicolini, G.; O'Halloran, T.; Ourcival, J.-M.; Peichl, M.; Pendall, E.; Reverter, B. R.; Roland, M.; Sabbatini, S.; Sachs, T.; Schmidt, M.; Schwalm, C. R.; Shekhar, A.; Silberstein, R.; Silveira, M. L.; Spano, D.; Tagesson, T.; Tramontana, G.; Trotta, C.; Turco, F.; Vesala, T.; Vincke, C.; Vitale, D.; Vivoni, E. R.; Wang, Y.; Woodgate, W.; Yepez, E. A.; Zhang, J.; Zona, D.; Jung, M.: X-BASE: the first terrestrial carbon and water flux products from an extended data-driven scaling framework, FLUXCOM-X. Biogeosciences 21 (22), pp. 5079 - 5115 (2024)
2.
Journal Article
Mauder, M.; Jung, M.; Stoy, P.; Nelson, J. A.; Wanner, L.: Energy balance closure at FLUXNET sites revisited. Agricultural and Forest Meteorology 358, 110235 (2024)
3.
Journal Article
Yi, K.; Senay, G. B.; Fisher, J. B.; Wang, L.; Suvočarev, K.; Chu, H.; Moore, G. W.; Novick, K. A.; Barnes, M. L.; Keenan, T. F. et al.; Mallick, K.; Luo, X.; Missik, J. E. C.; Delwiche, K. B.; Nelson, J. A.; Good, S. P.; Xiao, X.; Kannenberg, S. A.; Ahmadi, A.; Wang, T.; Bohrer, G.; Litvak, M. E.; Reed, D. E.; Oishi, A. C.; Torn, M. S.; Baldocchi, D.: Challenges and future directions in quantifying terrestrial evapotranspiration. Water Resources Research 60 (10), e2024WR037622 (2024)
4.
Journal Article
Jung, M.; Nelson, J. A.; Migliavacca, M.; El-Madany, T. S.; Papale, D.; Reichstein, M.; Walther, S.; Wutzler, T.: Technical note: Flagging inconsistencies in flux tower data. Biogeosciences 21 (7), pp. 1827 - 1846 (2024)
5.
Journal Article
Paulus, S.; Orth, R.; Lee, S.-C.; Hildebrandt, A.; Jung, M.; Nelson, J. A.; El-Madany, T. S.; Carrara, A.; Moreno, G.; Mauder, M. et al.; Groh, J.; Graf, A.; Reichstein, M.; Migliavacca, M.: Interpretability of negative latent heat fluxes from eddy covariance measurements in dry conditions. Biogeosciences 21 (8), pp. 2051 - 2085 (2024)
6.
Journal Article
Zhang, W.; Nelson, J. A.; Miralles, D. G.; Mauder, M.; Migliavacca, M.; Poyatos, R.; Reichstein, M.; Jung, M.: A new post-hoc method to reduce the energy imbalance in eddy covariance measurements. Geophysical Research Letters 51 (2), e2023GL107084 (2024)
7.
Journal Article
Panwar, A.; Migliavacca, M.; Nelson, J. A.; Cortés, J.; Bastos, A.; Forkel , M.; Winkler, A.: Methodological challenges and new perspectives of shifting vegetation phenology in eddy covariance data. Scientific Reports 13, 13885 (2023)
8.
Journal Article
Gomarasca, U.; Migliavacca, M.; Kattge, J.; Nelson, J. A.; Niinemets, Ü.; Wirth, C.; Cescatti, A.; Bahn, M.; Nair, R.; Acosta, A. et al.; Arain, A.; Beloiu, M.; Black, T.; Bruun, H. H.; Bucher, F.; Buchmann, N.; Carrara, A.; Byun, C.; Conte, A.; da Silva, A.; Duveiller, G.; Fares, S.; Ibrom, A.; Knohl, A.; Komac, B.; Limousin, J.; Lusk, C.; Mahecha, M.; Martini, D.; Minden, V.; Montagnani, L.; Mori, A.; Onoda, Y.; Penuelas, J.; Perez-Priego, O.; Poschlod, P.; Powell, T.; Reich, P.; Šigut, L.; van Bodegom, P.; Walther, S.; Wohlfahrt, G.; Wright, I.; Reichstein, M.: Leaf-level coordination principles propagate to the ecosystem scale. Nature Communications 14, 3948 (2023)
9.
Journal Article
Zhang, W.; Jung, M.; Migliavacca, M.; Poyatos, R.; Miralles, D. G.; El-Madany, T. S.; Galvagno, M.; Carrara, A.; Arriga, N.; Ibrom, A. et al.; Mammarella, I.; Papale, D.; Cleverly, J. R.; Liddell, M.; Wohlfahrt, G.; Markwitz, C.; Mauder, M.; Paul-Limoges, E.; Schmidt, M.; Wolf, S.; Brümmer, C.; Arain, M. A.; Fares, S.; Kato, T.; Ardö, J.; Oechel, W.; Hanson, C.; Korkiakoski, M.; Biraud, S.; Steinbrecher, R.; Billesbach, D.; Montagnani, L.; Woodgate, W.; Shao, C.; Carvalhais, N.; Reichstein, M.; Nelson, J. A.: The effect of relative humidity on eddy covariance latent heat flux measurements and its implication for partitioning into transpiration and evaporation. Agricultural and Forest Meteorology 330, 109305 (2023)
10.
Journal Article
Yu, X.; Orth, R.; Reichstein, M.; Bahn, M.; Klosterhalfen, A.; Knohl, A.; Koebsch, F.; Migliavacca, M.; Mund, M.; Nelson, J. A. et al.; Stocker, B. D.; Walther, S.; Bastos, A.: Contrasting drought legacy effects on gross primary productivity in a mixed versus pure beech forest. Biogeosciences 19 (17), pp. 4315 - 4329 (2022)

 

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