The BETHY/JSBACH Carbon Cycle Data Assimilation System: experiences and challenges

• DOI: 10.1002/jgrg.20118
• Publication Date: 2013-10-08T14:24:09Z
• Authors: T. Kaminski; W. Knorr; G. Schürmann; M. Scholze; P. J. Rayner; S. Zaehle; S. Blessing; W. Dorigo; V. Gayler; R. Giering; N. Gobron; J. P. Grant; M. Heimann; A. Hooker‐Stroud; S. Houweling; T. Kato; J. Kattge; D. Kelley; S. Kemp; E. N. Koffi; C. Köstler; P.‐P. Mathieu; B. Pinty; C. H. Reick; C. Rödenbeck; R. Schnur; K. Scipal; C. Sebald; T. Stacke; A. Terwisscha van...; M. Vossbeck; H. Widmann; T. Ziehn
• Keywords: Initialization; Earth system science; Component (thermodynamics)

We present the concept of Carbon Cycle Data Assimilation System and describe its evolution over last two decades from an assimilation system around a simple diagnostic model terrestrial biosphere to for calibration initialization land component comprehensive Earth model. critically review capability this modeling framework integrate multiple data streams, assess their mutual consistency with model, reduce uncertainties in simulation carbon cycle, provide, traceable manner, reanalysis products documented uncertainty, assist design observational network. highlight some challenges we met experience gained, give recommendations operating system, suggest directions future development.