• Adv. Atmos. Sci.  2018, Vol. 35 Issue (9): 1129-1136    DOI: 10.1007/s00376-018-7226-3
    Changes in the Proportion of Precipitation Occurring as Rain in Northern Canada during Spring-Summer from 1979-2015
    Wei HAN1, 2, Cunde XIAO3(), Tingfeng DOU4, Minghu DING2
    1Nanjing University of Information Science and Technology, Nanjing 210044, China
    2Institute of Polar Meteorology, Chinese Academy of Meteorological Sciences, Beijing 100081, China
    3State Key Laboratory of Earth Surface and Resource Ecology, Beijing Normal University, Beijing 100875, China
    4College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
    Abstract
    Abstract  

    Changes in the form of precipitation have a considerable impact on the Arctic cryosphere and ecological system by influencing the energy balance and surface runoff. In this study, station observations and ERA-Interim data were used to analyze changes in the rainfall to precipitation ratio (RPR) in northern Canada during the spring-summer season (March-July) from 1979-2015. Our results indicate that ERA-Interim describes the spring-summer variations and trends in temperature and the RPR well. Both the spring-summer mean temperature [0.4°C-1°C (10 yr)-1] and the RPR [2%-6% (10 yr)-1] increased significantly in the Canadian Arctic Archipelago from 1979-2015. Moreover, we suggest that, aside from the contribution of climate warming, the North Atlantic Oscillation is probably another key factor influencing temporal and spatial differences in the RPR over northern Canada.

    Just Accepted Date: 10 April 2018   Issue Date: 20 June 2018
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    Wei HAN
    Cunde XIAO
    Tingfeng DOU
    Minghu DING
    Cite this article:   
    Wei HAN,Cunde XIAO,Tingfeng DOU, et al. Changes in the Proportion of Precipitation Occurring as Rain in Northern Canada during Spring-Summer from 1979-2015[J]. Adv. Atmos. Sci., 2018, 35(9): 1129 -1136 .
    URL:  
    http://159.226.119.58/aas/EN/10.1007/s00376-018-7226-3     OR     
    http://159.226.119.58/aas/EN/Y2018/V35/I9/1129
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