| As the world’s unique landscape is T aklimakan Desert located in the Tarim Basin. Scholars at home and abroad pay much attention to the prevention and control of desertification, and also have a lot of research on ener gy flux. As the wor ld’s second-largest flow desert T aklimakan Desert, the surface winds ener gy flux of the temporal and spatial variation of regional and adjacent to the Qinghai Tibet Plateau is is the heat and climate produced important influence.This paper is based on the observation of wind speed, wind direction, temperature, pressure and water vapor pressure at 21 meteorological stations in the Tarim Basin from 2008 to 2013. For mula of energy, density and c onstant volume specific heat by using the kinetic ener gy and sensible heat of va por water and dry air,the kinetic ener gy, sensible heat, total energy and net energy of the surface wind in the Tarim Basin were calculated. And the temporal and spatial distribution characteristics of the surface winds energy flux in the basin are analyzed with the real background map generated by DEM. The results show:(1) Composition and proportion of surface wi nds energy flux: in th is paper, the kinetic energy and the sensible heat of wate r vapor and dry air of surface winds in the Tarim Basin are calculated respectively. In 2013 year, the cum ulative kinetic energy range is 14.9KJ~202.4KJ and th e average value is 62.2KJ; the cumulative water vapor sensible heat range is 15MJ~40MJ and the average value is 25.8MJ; the cumulative dry air sensible heat range is 1.4GJ~4.2GJ and the average value is 2.7GJ. The proportion of the accumulated kinetic energy on the total energy is little than 0.01%; the proportion of the accumulated sensible heat of water va por on the total ener gy is about 1%; the proportion of the accu mulated sensible heat of dry air o n the to tal energy is m ore than99%.(2)The spatial and temporal distribution of surface wind energy, sensible heat of water vapor and air dry in 2013: according to the calculation results o f the data of 21 weather stations, ener gy flux around the T arim Basin is mainly transported in the direction of the East and Sounthwest, intersection between Qiemo and Minfeng. Specific features(1)Spatial distribution: the regional distribution of the total energy in the basin is from large to small in order to the East(20.4GJ), the Northwest(18.8GJ), and the Southwest(17.3GJ); the net ener gy distribution is lar ge to sm all in turn for the East(6.7GJ), the Southwest(3.9GJ), and the Northwest(3.8GJ).(2)Temporal distribution: the maximum net kinetic ener gy appeared in May, 114.3KJ, and the m inimum value appeared in December, 20.2KJ; th e maximum value of sensible h eat of water vapor appeared in August, 41 MJ, and the m inimum value appeared in January, which was 3.4MJ; the maximum value of se nsible heat of dry air appe ared in August, 2.4GJ, and the minimum value appeared in November, which was 0.8 GJ.(3)Annual variation of energy flux of surface winds in 2008-2013:(1)Interannual variation of total energy: According to the order of total energy of the surface wind, the Northewest is the largest(121GJ) of the basin, followed by the Eastern(1 18GJ) and the Southwest(108GJ). The total ener gy flux in the northwest region is 20.2GJ/year(average of 6 years); station average is 2.5G J(8 stations); total energy in 2009 was t he largest, for the 21.6GJ, and the sm allest value in 2013 was 18.8GJ; the interannual variation range is 0.93~1.07. The total ener gy flux of the eastern region is the annual average of 19.7GJ/year; station average is 3.3G J(6 stations); total ener gy in 2012 was the largest, for the 20.5GJ, and the sm allest in 2011, for the18.1GJ; the interannual variation range is 0.92~1.04. The total ener gy flux in the southwest of China is 18.1GJ/year; station average is 2.6GJ(7 statio ns); total energy in 2010 was the lar gest, for the 19.1GJ, and the s mallest value in 2008 was 16.6GJ; the interannual variation range is 0.92~1.05.(2)Interannual variation of net ener gy: The conveying direction of basin surface wind net energy as part of the station and part of the year is north, south of the whole. The interannual variation of net energy is larger in the east and southwest of the basin, and the net energy is basically between 0.4GJ~1.6GJ. The northwest ministry is small, basically under 0.8GJ. |
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