JOURNAL OF NATURAL RESOURCES ›› 2018, Vol. 33 ›› Issue (1): 139-148.doi: 10.11849/zrzyxb.20161270

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Analysis of Heating Intensity in Harbin Based on Degree-hours Method

LIU Yu-lian1, 3, REN Guo-yu2, 3, *   

  1. 1. Heilongjiang Climate Center, Harbin 150030, China;
    2. Department of Atmospheric Science, School of Environmental Science, China University of Geosciences, Wuhan 430074, China;
    3. Laboratory for Climate Studies, National Climate Center, CMA, Beijing 100081, China
  • Received:2016-11-21 Revised:2017-01-04 Online:2018-01-20 Published:2018-01-20
  • Supported by:

    The Special Project in Climate Change of China Meteorological Administration, No. CCSF201842; Self-reliance Project of Heilongjiang Province Meteorological Bureau, No. HQ2016026.

Abstract:

Compared to degree-day, degree-hour is more realistic to indicate the heating intensity. Using the degree-hour method and hourly temperature data of 2005-2014, the characteristics of temperature and heating intensity of the heating period in Harbin City were analyzed. The main conclusions include: 1) During the 183 days of Harbin heating period, the average temperature was -7.7 ℃. Higher temperatures appeared in 2007 and 2008, which were 2.6 ℃ higher than the average, and the lower temperature occured in 2013, which was 2.0 ℃lower than the average. 2) During the period of 2005-2014, the average annual heating intensity was 1.1×105 ℃·h, with the maximum value 1.2×105 ℃·h (2013), and the minimum value 1.0×105 ℃·h (2007). The highest heating intensity was in January, and the lowest was in April; the maximum hourly mean heating intensity appeared in the early morning, and the minimum hourly mean heating intensity appeared in the early afternoon. 3) The hourly mean heating intensity of Harbin heating period was 25.7 ℃·h, and the diurnal distribution of hourly mean heating intensity was opposite to the temperature. The maximum hourly mean heating intensity, 29.3 ℃·h, was at 06:00 am, while the minimum value, 21.6 ℃·h, was at 14:00 pm. The heating intensity was generally higher than the average during the period from 21:00 pm to 09:00 am, and was lower than the average during the period from 09:00 am to 21:00 pm. 4) January has the maximum hourly mean heating intensity of 35.4 ℃·h, followed by December, February, November, March, October, and April had the minimum of only 12.0 ℃·h. 5) The minimum hourly mean heating intensity was at 15:00 pm in March and April, and was at 14:00 pm in other months of the heating period; the maximum hourly mean heating intensity was generally at 07:00 am in January, February and December, and happened at 06:00 am in March, October and November, and 05:00 am in April. The highest hourly mean heating intensity happened from 06:00 am to 08:00 am in mid-January.

Key words: degree-days, degree-hours, Harbin, heating intensity, temperature

CLC Number: 

  • TU832