Intercomparison of Terrestrial Carbon Fluxes and Carbon Use Efficiency Simulated by CMIP5 Earth System Models

Kim, Dongmin1; Lee, Myong-In1; Jeong, Su-Jong2; Im, Jungho1; Cha, Dong Hyun1; Lee, Sanggyun1

2018-05

10.1007/s13143-017-0066-8

Asia-Pacific Journal of Atmospheric Sciences   影响因子和分区

1976-7633

1976-7951

This study compares historical simulations of the terrestrial carbon cycle produced by 10 Earth System Models (ESMs) that participated in the fifth phase of the Coupled Model Intercomparison Project (CMIP5). Using MODIS satellite estimates, this study validates the simulation of gross primary production (GPP), net primary production (NPP), and carbon use efficiency (CUE), which depend on plant function types (PFTs). The models show noticeable deficiencies compared to the MODIS data in the simulation of the spatial patterns of GPP and NPP and large differences among the simulations, although the multi-model ensemble (MME) mean provides a realistic global mean value and spatial distributions. The larger model spreads in GPP and NPP compared to those of surface temperature and precipitation suggest that the differences among simulations in terms of the terrestrial carbon cycle are largely due to uncertainties in the parameterization of terrestrial carbon fluxes by vegetation. The models also exhibit large spatial differences in their simulated CUE values and at locations where the dominant PFT changes, primarily due to differences in the parameterizations. While the MME-simulated CUE values show a strong dependence on surface temperatures, the observed CUE values from MODIS show greater complexity, as well as non-linear sensitivity. This leads to the overall underestimation of CUE using most of the PFTs incorporated into current ESMs. The results of this comparison suggest that more careful and extensive validation is needed to improve the terrestrial carbon cycle in terms of ecosystem-level processes.

Earth system models carbon use efficiency CMIP5 MODIS gross primary production net primary production

SCI

英语

其他

Supercomputing Center/Korea Institute of Science and Technology Information[KSC-2015-C3-035]

Meteorology & Atmospheric Sciences

Meteorology & Atmospheric Sciences

WOS:000434916500002

KOREAN METEOROLOGICAL SOC

Web of Science

1.Ulsan Natl Inst Sci & Technol, Sch Urban & Environm Engn, 50 UNIST Gil, Ulsan 44919, South Korea
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Guangdong, Peoples R China

Kim, Dongmin,Lee, Myong-In,Jeong, Su-Jong,et al. Intercomparison of Terrestrial Carbon Fluxes and Carbon Use Efficiency Simulated by CMIP5 Earth System Models[J]. Asia-Pacific Journal of Atmospheric Sciences,2018,54(2):145-163.

Kim, Dongmin,Lee, Myong-In,Jeong, Su-Jong,Im, Jungho,Cha, Dong Hyun,&Lee, Sanggyun.(2018).Intercomparison of Terrestrial Carbon Fluxes and Carbon Use Efficiency Simulated by CMIP5 Earth System Models.Asia-Pacific Journal of Atmospheric Sciences,54(2),145-163.

Kim, Dongmin,et al."Intercomparison of Terrestrial Carbon Fluxes and Carbon Use Efficiency Simulated by CMIP5 Earth System Models".Asia-Pacific Journal of Atmospheric Sciences 54.2(2018):145-163.