Zhenming Ji
Chinese Academy of Sciences
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Featured researches published by Zhenming Ji.
Climate Dynamics | 2014
Qinglong You; Klaus Fraedrich; Frank Sielmann; Jinzhong Min; Shichang Kang; Zhenming Ji; Xiuhua Zhu; Guoyu Ren
Abstract Degree days are usually defined as the accumulated daily mean temperature varying with the base temperature, and are one of the most important indicators of climate changes. In this study, the present-day and projected changes of four degree days indices from daily mean surface air temperature output simulated by Max Planck Institute, Earth Systems Model of low resolution (MPI-ESM-LR) model are evaluated with the high resolution gridded-observation dataset and two modern reanalyses in China. During 1979–2005, the heating degree days (HDD) and the numbers of HDD (NHDD) have decreased for observation, reanalyses (ERA-Interim and NCEP/NCAR) and model simulations (historical and decadal experiments), consistent with the increasing cooling degree days (CDD) and the numbers of CDD (NCDD). These changes reflect the general warming in China during the past decades. In most cases, ERA-Interim is closer to observation than NCEP/NCAR and model simulations. There are discrepancies between observation, reanalyses and model simulations in the spatial patterns and regional means. The decadal hindcast/forecast simulation performance of MPI-ESM-LR produce warmer than the observed mean temperature in China during the entire period, and the hindcasts forecast a trend lower than the observed. Under different representative concentration pathway (RCP) emissions scenarios, HDD and NHDD show significant decreases, and CDD and NCDD consistently increase during 2006–2100 under RCP8.5, RCP4.5 and RCP2.6, especially before the mid-21 century. More pronounced changes occur under RCP8.5, which is associated with a high rate of radiative forcing. The 20th century runs reflect the sensitivity to the initial conditions, and the uncertainties in terms of the inter-ensemble are small, whereas the long-term trend is well represented with no differences among ensembles.
Climate Research | 2012
Xuejie Gao; Ying Shi; Dong-Feng Zhang; Jia Wu; Filippo Giorgi; Zhenming Ji; Yongguang Wang
International Journal of Climatology | 2015
Zhenming Ji; Shichang Kang
Climate Dynamics | 2015
Zhenming Ji; Shichang Kang; Zhiyuan Cong; Qianggong Zhang; Tandong Yao
Climate Dynamics | 2011
Zhenming Ji; Shichang Kang; Dongfeng Zhang; Chunzi Zhu; Jia Wu; Ying Xu
Climate Dynamics | 2013
Zhenming Ji; Shichang Kang
Atmospheric Research | 2016
Zhenming Ji; Shichang Kang; Qianggong Zhang; Zhiyuan Cong; Pengfei Chen; Mika Sillanpää
Climate Dynamics | 2017
Junhua Yang; Keqin Duan; Shichang Kang; Peihong Shi; Zhenming Ji
Aerosol and Air Quality Research | 2017
Pengfei Chen; Chaoliu Li; Shichang Kang; Maheswar Rupakheti; Arnico K. Panday; Fangping Yan; Quanlian Li; Qianggong Zhang; Junming Guo; Zhenming Ji; Dipesh Rupakheti; Wei Luo
Aerosol and Air Quality Research | 2017
Junhua Yang; Shichang Kang; Zhenming Ji