Site-level model-data synthesis of terrestrial carbon fluxes in the CarboEastAsia eddy-covariance observation network: Toward future modeling efforts

Kazuhito Ichii, Masayuki Kondo, Young Hee Lee, Shao Qiang Wang, Joon Kim, Masahito Ueyama, Hee Jeong Lim, Hao Shi, Takashi Suzuki, Akihiko Ito, Hyojung Kwon, Weimin Ju, Mei Huang, Takahiro Sasai, Jun Asanuma, Shijie Han, Takashi Hirano, Ryuichi Hirata, Tomomichi Kato, Sheng Gong LiYing Nian Li, Takahisa Maeda, Akira Miyata, Yojiro Matsuura, Shohei Murayama, Yuichiro Nakai, Takeshi Ohta, Taku M. Saitoh, Nobuko Saigusa, Kentaro Takagi, Yan Hong Tang, Hui Min Wang, Gui Rui Yu, Yi Ping Zhang, Feng Hua Zhao

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Based on the model-data comparison at the eddy-covariance observation sites from CarboEastAsia datasets, we report the current status of the terrestrial carbon cycle modeling in monsoon Asia. In order to assess the modeling performance and discuss future requirements for both modeling and observation efforts in Asia, we ran eight terrestrial biosphere models at 24 sites from 1901 to 2010. By analyzing the modeled carbon fluxes against the CarboEastAsia datasets, the strengths and weaknesses of terrestrial biosphere modeling over Asia were evaluated. In terms of pattern and magnitude, the carbon fluxes (i. e., gross primary productivity, ecosystem respiration, and net ecosystem exchange) at the temperate and boreal forest sites were simulated best, whereas the simulation results from the tropical forest, cropland, and disturbed sites were poor. The multi-model ensemble mean values showed lower root mean square errors and higher correlations, suggesting that composition of multiple terrestrial biosphere models would be preferable for terrestrial carbon budget assessments in Asia. These results indicate that the current model-based estimation of terrestrial carbon budget has large uncertainties, and future research should further refine the models to permit re-evaluation of the terrestrial carbon budget.

Original languageEnglish
Pages (from-to)13-20
Number of pages8
JournalJournal of Forest Research
Volume18
Issue number1
DOIs
StatePublished - Feb 2013

Keywords

  • Carbon fluxes
  • East Asia
  • Eddy covariance measurement
  • Model comparison
  • Terrestrial biosphere model

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