Changes in surface icing duration over north China during 1961–2015

• DOI: 10.1002/asl.827
• Publication Date: 2018-08-07T04:34:29Z
• Authors: Yu Yu; Zhihua Ren; Feng Gao; Xiaoyan Meng
• Keywords: Frost (temperature)

Climate extremes are changing at mid–high latitudes due to the effects of climate change. We defined duration surface icing (ice formation on open water) in north China from 1961 2015, along with its annual start and end date, based daily measurements by observers 346 weather stations. A comprehensive analysis temporal spatial variations these data showed that regional mean has a high correlation coefficient 0.97 number frost days (calculated minimum temperature below 0 °C), some discrepancies. As date trended later earlier this region, decreased 2.6 days/decade 2015 slope became steeper −4.8 during most recent 25 years. These results contribute better understanding changes climatic related global