[1]GUAN Yue,HE Qijin,LIU Jiahong,et al.Variation Characteristics of Extreme Temperature and Its Earliest and Latest Day Sequence in Huang-Huai-Hai Region During the Period 1961 to 2015[J].Research of Soil and Water Conservation,2021,28(01):147-152.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 01
Page number:
147-152
Column:
Public date:
2021-01-10
- Title:
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Variation Characteristics of Extreme Temperature and Its Earliest and Latest Day Sequence in Huang-Huai-Hai Region During the Period 1961 to 2015
- Author(s):
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GUAN Yue, HE Qijin, LIU Jiahong, LI Ruochen, HU Qi, HUANG Binxiang, PAN Xuebiao
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(College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China)
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- Keywords:
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Huang-Huai-Hai region; extreme temperature; earliest day sequence; latest day sequence
- CLC:
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P467
- DOI:
-
-
- Abstract:
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Considering the current situation of more extreme temperature events happened in the context of climate change, we described the characteristics of extreme temperature in Huang-Huai-Hai region from 1961 to 2015 based on daily temperature data. The methods including percentile thresholds, linear regression, m-k mutation test, significance test were employed to delineate the characteristics of extreme temperature and its occurrence sequence. Important results were obtained as follows.(1)In Huang-Huai-Hai region, the average extreme high temperature was 32.6℃, and the extreme low temperature was -9.0℃. Extreme high temperatures tended to distribute in a meridional direction, and extreme low temperatures distributed in a zonal direction, indicating that extreme low temperatures were less affected by the location of the sea and land.(2)From 1961 to 2015, the extreme high temperature showed a high-low-high trend, and the extreme low temperature showed the significantly increasing trend, of which the increase in Beijing-Tianjin-Hebei region was the largest, climate tendency rate reached above 0.6℃/decade.(3)The advance of the earliest day of extreme high temperature and the delay of the latest day indicated that that extreme high temperature might occur earlier and the duration prolonged. Extreme low temperature had the characteristics of early occurrence and early termination. It is indicated that the temperature in Huang-Huai-Hai region will fall earlier in autumn and rise earlier in spring, and will seriously affect the production of winter wheat and summer maize.