[1]MA Zice,YU Hongbo,ZHANG Qiaofeng,et al.Characteristics and Abrupt Change of Temperature and Precipitation in Inner Mongolia Area Over the Period 1960-2016[J].Research of Soil and Water Conservation,2019,26(03):114-121.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 03
Page number:
114-121
Column:
Public date:
2019-04-12
- Title:
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Characteristics and Abrupt Change of Temperature and Precipitation in Inner Mongolia Area Over the Period 1960-2016
- Author(s):
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MA Zice1, YU Hongbo1,2, ZHANG Qiaofeng1,2, CAO Congming1
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1. College of Geography Science, Inner Mongolia Normal University, Hohhot 010022, China;
2. Inner Mongolian Key Laboratory of Remote Sensing and Geography Information System, Inner Mongolia Normal University, Hohhot 010022, China
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- Keywords:
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climate change; temperature; precipitation; Inner Mongolia
- CLC:
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P467
- DOI:
-
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- Abstract:
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Based on monthly temperature and precipitation data from 45 meteorological stations in Inner Mongolia from 1960 to 2016, various methods such as Linear Tendency Estimation, Radial Basis Function Interpolation, Cumulative Anomaly, Sliding t-test, Mann-Kendall Method and Wavelet Analysis were used to explore the temporal and spatial variation characteristics related to the abrupt changes of temperature and precipitation in Inner Mongolia over a 57-year period. The results showed that during the 57 year period the temperature in Inner Mongolia had presented the significant upward trend, which was significantly higher than the global average annual temperature increase rate, and reached up to 0.38 Celsius per decade. An abnormal temperature increase occurred in 1987. Of the four seasons, the average temperature rise in spring and winter contributed the most to the annual average temperature rise. The interannual variation of annual average and seasonal average temperature showed a significant warming trend, and the annual and seasonal average temperature began to increase in the period 1990-1999. The average annual temperature and the temperature increase rate in Inner Mongolia followed the same pattern which was the highest in the west, followed by the middle, and the lowest in the east. The annual precipitation showed no significant upward trend in Inner Mongolia. The annual precipitation propensity rate showed the increase-decrease-increase trend from west to east. The periods with the least amount of precipitation were found during the period from 2000 to 2009, and the periods with the most precipitation were observed in the period 1990-1999. The precipitation increase rate was 0.47 mm per decade and there were two mutations. In 1999, precipitation changed from abundant water to lack of water and in 2011, from lack-of-water to abundant water. The precipitation in the rainy season showed the decreasing trend, and the increasing trend in the dry season. The amounts of increase and decrease were the greatest in the east, followed by the middle, and the lowest in the west. Based on the wavelet analysis, the average annual temperature change in Inner Mongolia from 1960 to 2016 was the strongest in the period of 15 years; the annual precipitation change was the strongest in the 11-year cycle. This study draws the conclusion that the climate was transforming from warm-drying to warming-humidification in Inner Mongolia from 1960 to 2016.