Academic literature on the topic 'ORCHIDEE and LMDZ models'
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Journal articles on the topic "ORCHIDEE and LMDZ models"
Delire, Christine, Nathalie de Noblet-Ducoudré, Adriana Sima, and Isabelle Gouirand. "Vegetation Dynamics Enhancing Long-Term Climate Variability Confirmed by Two Models." Journal of Climate 24, no. 9 (May 1, 2011): 2238–57. http://dx.doi.org/10.1175/2010jcli3664.1.
Full textBacour, Cédric, Natasha MacBean, Frédéric Chevallier, Sébastien Léonard, Ernest N. Koffi, and Philippe Peylin. "Assimilation of multiple datasets results in large differences in regional- to global-scale NEE and GPP budgets simulated by a terrestrial biosphere model." Biogeosciences 20, no. 6 (March 23, 2023): 1089–111. http://dx.doi.org/10.5194/bg-20-1089-2023.
Full textRyder, J., J. Polcher, P. Peylin, C. Ottlé, Y. Chen, E. van Gorsel, V. Haverd, et al. "A multi-layer land surface energy budget model for implicit coupling with global atmospheric simulations." Geoscientific Model Development 9, no. 1 (January 25, 2016): 223–45. http://dx.doi.org/10.5194/gmd-9-223-2016.
Full textRyder, J., J. Polcher, P. Peylin, C. Ottlé, Y. Chen, E. van Gorsel, V. Haverd, et al. "A multi-layer land surface energy budget model for implicit coupling with global atmospheric simulations." Geoscientific Model Development Discussions 7, no. 6 (December 8, 2014): 8649–701. http://dx.doi.org/10.5194/gmdd-7-8649-2014.
Full textPeylin, Philippe, Cédric Bacour, Natasha MacBean, Sébastien Leonard, Peter Rayner, Sylvain Kuppel, Ernest Koffi, et al. "A new stepwise carbon cycle data assimilation system using multiple data streams to constrain the simulated land surface carbon cycle." Geoscientific Model Development 9, no. 9 (September 20, 2016): 3321–46. http://dx.doi.org/10.5194/gmd-9-3321-2016.
Full textJost, A., S. Fauquette, M. Kageyama, G. Krinner, G. Ramstein, J. P. Suc, and S. Violette. "High resolution climate and vegetation simulations of the Late Pliocene, a model-data comparison over western Europe and the Mediterranean region." Climate of the Past 5, no. 4 (October 12, 2009): 585–606. http://dx.doi.org/10.5194/cp-5-585-2009.
Full textJost, A., S. Fauquette, M. Kageyama, G. Krinner, G. Ramstein, J. P. Suc, and S. Violette. "High resolution climate and vegetation simulations of the Mid-Pliocene, a model-data comparison over western Europe and the Mediterranean region." Climate of the Past Discussions 5, no. 3 (May 13, 2009): 1367–414. http://dx.doi.org/10.5194/cpd-5-1367-2009.
Full textXueref-Remy, I., P. Bousquet, C. Carouge, L. Rivier, N. Viovy, and P. Ciais. "Variability and budget of CO<sub>2</sub> in Europe: analysis of the CAATER airborne campaigns – Part 2: Comparison of CO<sub>2</sub> vertical variability and fluxes from observations and a modeling framework." Atmospheric Chemistry and Physics Discussions 10, no. 2 (February 12, 2010): 4271–304. http://dx.doi.org/10.5194/acpd-10-4271-2010.
Full textXueref-Remy, I., P. Bousquet, C. Carouge, L. Rivier, and P. Ciais. "Variability and budget of CO<sub>2</sub> in Europe: analysis of the CAATER airborne campaigns – Part 2: Comparison of CO<sub>2</sub> vertical variability and fluxes between observations and a modeling framework." Atmospheric Chemistry and Physics 11, no. 12 (June 20, 2011): 5673–84. http://dx.doi.org/10.5194/acp-11-5673-2011.
Full textLaw, Vincent, Brittany Evernden, John Puskas, Gisela Caceres, Elena Ryzhova, Inna Smalley, Nam Tran, et al. "CMET-26. IN-VITRO & IN-VIVO CULTURE OF PATIENT (PT) DERIVED CSF-CTCS IN LEPTOMENINGEAL DISEASE (LMDZ) FROM MELANOMA TO IDENTIFY NOVEL TREATMENT STRATEGIES." Neuro-Oncology 21, Supplement_6 (November 2019): vi57. http://dx.doi.org/10.1093/neuonc/noz175.227.
Full textDissertations / Theses on the topic "ORCHIDEE and LMDZ models"
Gutierrez, Cori Omar. "Relationship and feedback between LULC changes and hydroclimatic variability in Amazonia." Electronic Thesis or Diss., Sorbonne université, 2024. http://www.theses.fr/2024SORUS123.
Full textThe Amazon rainforest plays a vital role by functioning as a regulator of the climate system and as the main terrestrial carbon sink. It drives hydroclimatic processes and mitigates the effects of droughts through vegetation-atmosphere coupling. Indeed, Amazon forests have the potential to impact rainfall patterns through biophysical processes like water recycling. However, these capacities have been reduced during the last decades due to disturbances in the climate-vegetation system together with the intensification of droughts. All this has accentuated a process of biophysical transition from a predominantly forested ecosystem to a Savanna. Therefore, given these complexities, understanding the direction of changes is of vital importance.Using multiple datasets and the coupled ORCHIDEE and LMDZ models, this thesis delves into the study of the interactions between Amazon hydroclimatology and vegetation. In addition, it seeks to expand our understanding of modifications in the vegetation-atmosphere system and its links with climate and LULC changes. Likewise, taking into account the increasing rates of deforestation, it investigates the effects and feedback resulting from a large-scale forest loss scenario on hydrological processes.The results show that, over the southwestern Amazon, forests undergo a transition from being influenced by energy availability to depending on water availability throughout the year. During the rainy season, vegetation growth is primarily influenced by energy availability rather than water availability. Nevertheless, outside of this period, forests respond positively to precipitation and terrestrial water storage, suggesting that vegetation is primarily dependent on water supply. However, a spatial analysis reveals that recent deforestation modifies these transitions and destabilizes the natural balance in the climate-vegetation system.The nature of these imbalances in the Amazon is not entirely clarified. Through an approach based on the relationships of water/energy fluxes and vegetation conditions over the last four decades, it is explored whether these changes are intrinsic to climate variability or are driven by anthropogenic processes. 67% of the southwestern Amazon has experienced a transition towards a predominantly dry state due to climatic factors (external forcing), while 21% has transitioned towards a state dominated by deforestation (internal forcing). However, external and internal forcings are not independent processes, as both mechanisms drive changes simultaneously. By weighing the magnitudes of these forcings, we show that the synergies have led 74% of the southwestern Amazon toward a state of greater water stress. Nevertheless, during recent years, although combined external-internal processes continue to exert significant control over changes, 30% of these are strictly dominated by internal forcing. This suggests that internal processes are playing an increasingly relevant role in the transition towards a state characterized by high forest water stress, especially in areas where deforestation and anthropogenic pressure are increasing.Using the coupled ORCHIDEE and LMDZ models, the effects of projected Amazon deforestation by 2050 on the hydrological cycle and dryness are examined. Deforestation decreases precipitation, reduces evapotranspiration and increases runoff. Furthermore, deforestation accentuates water stress especially in the southwestern Amazon (positive feedback). Water demands in the atmosphere, on the land surface and even in the soil root zone intensify during the dry season. During the wet season, the deficit of specific atmospheric humidity becomes even more acute towards the tropical Andes over the Altiplano region. These findings provide a more thorough understanding of the possible effects of massive forest removal on the water availability and resilience of the Amazon in a context where changes are occurring at an accelerated rate
Lathière, Juliette. "Evolution des émissions de composés organiques et azotés par la biosphère continentale dans le modèle LMDz-INCA-ORCHIDEE." Paris 6, 2005. http://www.theses.fr/2005PA066322.
Full textKrinner, Gerhard. "Simulations du climat des calottes de glace." Phd thesis, Université Joseph Fourier (Grenoble), 1997. http://tel.archives-ouvertes.fr/tel-00716408.
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