Jena CarboScope: CO2 flux estimates based on various types of measurements (atmospheric CO2 mixing ratios, surface-ocean CO2 partial pressure) and a top-down inverse modelling approach. Background: The terrestrial vegetation, the oceans, human activities -main players of the global carbon cycle- exchange carbon dioxide (CO2) and other greenhouse gases with the atmosphere, thereby influencing the climate through the greenhouse effect. The strength of the biospheric and oceanic CO2 exchanges strongly varies in space and time - from year to year, with season, from day to day, between day and night. This variability is, in turn, closely linked back to climatic influences. Jena CarboScope results can be downloaded for use in collaborative scientific projects or for general information.
OCN model: The dynamic global vegetation model OCN is a model of the coupled terrestrial carbon and nitrogen cycles (Zaehle and Friend, 2010; Zaehle et al., 2010, GBC), derived from the ORCHIDEE land-surface model (Krinner et al. 2005). It operates at an half-hourly time-scale and simulates diurnal net carbon exchanges and nitrogen trace gas emissions, as well as daily changes in leaf area index, foliar nitrogen and vegetation structure and growth. The main purpose of the model is to analyse the longer-term (interannual to decadal) implication of nutrient cycling for the modelling of land-climate interactions (Zaehle et al. 2010, GRL; Zaehle et al. 2011). The model is long-standing contributor to the TRENDY project.
QUINCY model: The QUINCY model (Thum, et al., 2019) is a terrestrial biosphere model tracking the flows of carbon, nitrogen and phosphorus, as well as a number of isotopes for a number of pre-defined terrestrial ecosystem types at a half-hourly time-step. It is currently developed to run for individual sites driven by surface meteorology, but its intention is to be further developed to be coupled to a land-surface scheme of a global climate model. For this purpose, ongoing work includes the integration of the model into the Jena Scheme for Biosphere Atmosphere Coupling in Hamburg (JSBACH). JSBACH is the land surface model of the MPI Earth system model. It is jointly developed by the Max Planck Institute for Meteorology and Max Planck Institute for Biogeochemistry.