Dissertation > Excellent graduate degree dissertation topics show

The Study on Solar Ultraviolet Radiation Characteristics in Tazhong Area of Taklimakan Desert

Author: JinLiLi
Tutor: HeQing
School: Xinjiang Normal University
Course: Physical Geography
Keywords: Taklimakan Desert UV-radiation Ratio
CLC: P422.1
Type: Master's thesis
Year: 2010
Downloads: 19
Quote: 0
Read: Download Dissertation

Abstract


In this paper,the characteristics and influencing factors of solar ultraviolet radiation,the relationship between ultraviolet radiation and global radiation,variation ultraviolet radiation and properties of ratio of ultraviolet radiation to global radiation on different sky conditions,the estimation equation developed in this study,ultraviolet radiation data for calculating the total ozone amount and checkout in Taizhong station are analyed on the basis of the solar ultraviolet radiation,global data observed from Jan.to Dec.2007,the reflect radiation and scatter radiation from Apr. to May 2007,ground weather data over the Taklimakan desert hinterland.The results are as fllows:（1）The monthly total UV-radiation and UV-B radiation are 305.64 MJ·m-2·a-1 and 8.59 MJ·m-2·a-1.The monthly total maximum（minimum） of UV-radiation appears in Jul.（Dec）.The UV-radiation（UV-B radiation） in winter is 2/5（1/4） in summer.The peak value of UV radiation （UV-B radiation） instantaneous radiant intensity is 66.9 W·m-2 (2.51W·m-2 )appears in June.（2）The annual mean value is 4.99%.The average change range is 4.16 percent to 5.9 percent of the ratio of the UV to global radiation.The maximum（minimum） ratio of the UV-radiation to global radiation appears in summer（winter）.The mediacy ratio of the UV radiation to global radiation appears in spring and autumn.The ratio gradually increase （decreases） along with the total cloud cover（sand） increasing.The relationship between their ratio and global radiation has obvious season variation. The maximum（minimum） ratio appears in summer is 5.5%（spring is 4.5%）,also is 4.5% in winter,is 4.7% in autumn.（3）The affect of cloud cover and sand dust is great.The UV-radiation gradually decreases along with the total cloud cover increasing.Compared with clear sky,the UV-radiation and UV-B radiation reduced respectively by 31.68% and 33.69% when total cloud≥8,they reduced respectively by 15.74% and 16.89% when total cloud between 6 to 8,they reduced respectively by 11.64% and 13.15% when total cloud between 3 to 5 Compared with clear sky,the mean UV-radiation reduced respectively by 23.63% and 12.53% under Sc and Ci cloud,the mean UV-B radiation reduced respectively by 17.47% and 14.31% under Sc and Ci cloud.The UV-radiation and UV-B radiation reduced remarkably in sand blown weather,and it is smallest in sand storm.The UV-radiation and UV-B radiation reduced respectively by 11.91% and 14.68% under sand blown weather.they reduced respectively by 41.91% and 44.32% under sand stom weather.The UV-B radiation reduced remarkably than UV-radiation under cloudy day and sand blown day.（4）There are the remarkable plus correlations between ultraviolet radiation and global radiation.The relationship of ground temperature and ultraviolet radiation is remarkable.The estimate equations are steady and credible,they can predict Ultravio- let radiation each season.Using the data of scatter radiation,reflect radiation, ultravio-let radiation,ground weather data from April,9th to May 20th in 2007,their phase linearity regression show that the mostly influencing factor is scatter,the second is actinochemistry,the last is UV-radiation in Taizhong.

Related Dissertations

  1. Study of Interaction between Epoxy Molecules and Carbon Fiber Surface with Molecular Simulation,TB332
  2. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  3. Packet Loss Recovering Technology for Speech Transmission over Network,TN912.3
  4. From the Perspective of Public Administration "Passionate" Problem of Two the Research,C924.21
  5. Research on Anaerobic Fermentation Processing Technology of Dead Tilapia,TS254.4
  6. Effect of Water and Nitrogen Coupling Using on Soil Physical and Chemical Properties in Tobacco Areas and the Yield and Quality of Fule-cured Tobacco in Yibin,S572
  7. The Effect of Fertilizer Application on Yield and Quality in Chrysanthemum Morifolium,S567.239
  8. Studies on Key Planting Skills of Cigar-Wrapper Tabacco,S572
  9. Effect of Different Sand/Soil Ratio on the Recovery Ability of Hybrid Burmudagrass after Trampling,S688.4
  10. Study on Heat-Induced Gelation Properties of Miexed Chicken Breast and Leg Myofibrillar,TS251.1
  11. Monitoring Nitrogen Status and Growth Characters with Canopy Spectral Reflectance in Summer Maize,S513
  12. Monitoring Leaf Nitrogen Status in Rice with Near Infrared Spectroscopy,S511
  13. Electropolymerization and Electrochromic Properties of Conducting Polymers,O631.3
  14. A Functional Data Based Approach for Studying the Relation of ECG T-wave and RR Intervals,R444
  15. Microdialysis Combine with Hollow Semipermeable Membrane Microextraction,R917
  16. An Empirical Analysis on the Changes of China’s Labor Share,F224
  17. The Research on the Effect of Uniaxial Compressive Load and Mineral Admixtures on Chloride Permeability of Concrete,TU528
  18. The Protection Research of Natural Aloe Extracts on Wheat Under UV-B Stress,S512.1
  19. The Application Value of Elastosonography in the Diagnosis of Benign and Malignant Thyroid Nodules,R445.1
  20. A Basal and Clinical Reseach Ofω-3 Polyunsaturated Fatty Acids to Seal Non-alcoholic Fatty Liver Disease,R575.5
  21. Using the Facial Golden Mask Simplyfy Facial Analysis,R622

CLC: > Astronomy,Earth Sciences > Atmospheric science (meteorology ) > Meteorological elements,atmospheric phenomenon > Atmospheric radiation > Solar radiation
© 2012 www.DissertationTopic.Net  Mobile