Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Chinese Journal of Atmospheric Sciences》 2018-03
Add to Favorite Get Latest Update

Climate Change Projection over Xiong'an District and Its Adjacent Areas: An Ensemble of RegCM4 Simulations

WU Jie;GAO Xuejie;XU Ying;Climate Change Research Center,Institute of Atmospheric Physics,Chinese Academy of Sciences;University of Chinese Academy of Sciences;National Climate Center,China Meteorological Administration;  
We investigate the future climate changes in the 21 st century in the Xiong'an District, recently established by the Chinese government, and its surrounding areas in North China based on 4 sets of RegCM4 climate change simulations over East Asia under the mid-range RCP4.5(Representative Concentration Pathway) scenario. The model is run at a grid spacing of 25 km, and driven by the global model simulations of CSIRO-Mk3-6-0, EC-EARTH, Had GEM2-ES and MPI-ESM-MR, respectively. Validation of the present day(1986–2005) climate simulations is conducted first, followed by the ensemble projection of future changes along with the inter-simulation spread. Results show that the model can well capture both the spatial distributions of mean temperature and precipitation and their annual cycles. The model also shows a good performance in reproducing the temperature extreme indices of annual maximum value of daily maximum temperature(TXx) and annual minimum value of daily minimum temperature(TNn), and the precipitation extreme index of annual maximum 1-day precipitation(RX1 day). Continuous warming and increases of TXx and TNn are found over Xiong'an District and its adjacent areas in the 21 st century, indicating a warmer climate condition and more frequent hot spells in the future. With slight increases in mean precipitation, significant increases in RX1 day with small inter-simulation spread are projected, indicating the intensification of precipitation extremes and more floods over the region. In the meantime, the greater increase in potential evapotranspiration compared to precipitation following the warming will lead to increases in water stress.
【Fund】: 国家重点研发计划项目2016YFA0600704;; 国家自然科学基金资助项目41375104;; 中国气象局气候变化专项CCSF201731~~
【CateGory Index】: P456;P467
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved