Characteristics of Area Precipitation in Xinjiang Region with Its Variations

Shi Yuguang; Sun Zhaobo; Yang Qing

Vol.19, NO.3, 2008

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2008 > 19(3): 326-332

Shi Yuguang, Sun Zhaobo, Yang Qing. Characteristics of area precipitation in Xinjiang region with its variations. J Appl Meteor Sci, 2008, 19(3): 326-332.

Citation:

Shi Yuguang, Sun Zhaobo, Yang Qing. Characteristics of area precipitation in Xinjiang region with its variations. J Appl Meteor Sci, 2008, 19(3): 326-332.

Shi Yuguang, Sun Zhaobo, Yang Qing. Characteristics of area precipitation in Xinjiang region with its variations. J Appl Meteor Sci, 2008, 19(3): 326-332.

Citation:

Shi Yuguang, Sun Zhaobo, Yang Qing. Characteristics of area precipitation in Xinjiang region with its variations. J Appl Meteor Sci, 2008, 19(3): 326-332.

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Characteristics of Area Precipitation in Xinjiang Region with Its Variations

1.
Nanjing University of Information Science & Technology, Nanjing 210044
2.
Xinjiang Meteorological Bureau, Urumqi 830002
3.
Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002

Received Date: 2007-08-28
Rev Recd Date: 2008-01-18
Publish Date: 2008-06-30

Abstract

Abstract

Using the data of precipitation including 144 meteorological and hydrological stations in Xinjiang from 1961 to 2005, annual and seasonal distributing features and its variations of area precipitation in Xinjiang are discussed by empirical orthogonal function (EOF), multiple regression analysis, maximum entropy analysis and so on, combining with 1 km×1 km gridding data of digital elevation model (DEM). Results show that mean annual area precipitation in Xinjiang region is 2724.6×10⁸t and mean annual precipitation is 165.5 mm. For space distribution, area precipitation of Tianshan Mountains, Northern Xinjiang and Southern Xinjiang respectively occupy about 40.4%, 34.3% and 25.3% of all regions, and its mean annual precipitation are 409.1 mm, 277.3 mm and 66.2 mm, respectively. Area precipitation in summer is the most one about 54.4% of all year, 23.6% in spring, 16.5% in autumn, and the least 5.5% in winter. In the last 45 years area precipitation in Xinjiang presents clear annual variations and increasing trend, especially since 1987.
- Xinjiang region;
- area precipitation;
- climate change

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References(19)

Figures and Tables

图 1 计算年降水量与实测值比较 (a) 北疆地区, (b) 天山山区, (c) 南疆地区

Fig. 1 Compare between calculating and observing annual precipitation in Northern Xinjiang (a), Tianshan Mountains (b) and Southern Xinjiang (c)

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图 2 新疆区域降水量分布

Fig. 2 Precipitation distribution in Xinjiang

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图 3 北疆地区 (a)、天山山区 (b) 和南疆地区 (c) 年平均降水量分布

Fig. 3 Annual precipitation distribution in Northern Xinjiang (a), Tianshan Mountains (b) and Southern Xinjiang (c)

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图 4 1961—2005年新疆区域面雨量的年际变化

Fig. 4 Annual variation of Xinjiang area precipitation from 1961 to 2005

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图 5 不同区域面雨量的年际变化

Fig. 5 Annual variation of area precipitation of different regions from 1961 to 2005 in Xinjiang

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表 1 特征向量与地理因子的回归方程系数

Table 1 Regress equation coefficients between the characteristic vectors and geography factors

表 2 不同分辨率的面雨量

Table 2 The results of area precipitation in different resolution in Xinjiang region

表 3 新疆面雨量各季节年代际变化 (单位: 10⁸t)

Table 3 Decadal variations of Xinjiang area precipitation (unit:10⁸t)

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