西藏太阳紫外线

　　This book investigates the solar ultraviolet（UV）radiation and its shelter，ozone over the Tibetan Plateau，by means of ground-based monitoring，analysis of satellite data and computational modeling. The presented book consists of a general study on solar UV radiation and some separate published papers.The ground-based monitoring of UV-radiation，and from it derived ozone monitoring，using NILU-UV Irradiance Meters constitute the major part of the presented results. The ground-based UV-radiation data analysis is supplemented by computational analysis of satellite based data obtained from the TOMS database at NASA.The long-term ground-based studies （July，1999 -2018） were camed out at five Solar UV Radiation Observatories on the Tibetan Plateau. These have been supplemented by several field experiments in the altitude region 3，000 -5，000 meters above sea level.Comprehensive satellite UV data were analyzed to study large-scale distribution of UV radiation over the whole Tibetan Plateau. Radiative transfer model has been used to cal-culate the UV irradiance at any desired location. It has been used to derive the UV-B ra-diation levels and also check the consistency of UV measurement results.The physics principles and the techniques used are presented in the first three parts of the thesis. The actual research and the results that constitute the major part of this book are presented in other scientific papers attached in this book.

　　诺桑（Norsang Gelaor），西藏大学教授，主要从事西藏高原太阳能辐射资源和太阳能技术等新能源方面的教学和研究工作。在靠前外发表学术论文40多篇学术论文，包括12篇SCI论文。

Acknowledgments
Introduction
Part Ⅰ The Measurements and Data Analysis Conducted in this Work
Chapter 1 The Experimental Work
Chapter 2 UV Measurements with NILU-UV Irradiance Meters
Chapter 3 Data Analysis and Instrumentation
Part Ⅱ Background Physics of Solar Ultraviolet
Radiation and Ozone
Chapter 4 Solar Ultraviolet Radiation
Chapter 5 Photochemical Description of Solar UV Attenuation in the Earth's
Atmosphere
Chapter 6 Science of Ozone Depletion
Part Ⅲ Radiative Transfer Equation for Model Calculations
Chapter 7 Model Calculation Method for Surface UV Irradiance
Part Ⅳ Papers
Paper 1 UV Measurements in the 3000 -5000 m Altitude Region in Tibet
Paper 2 The Vitamin D Status among Tibetans
Paper 3 Ground-based Measurements and Modeling of Solar UV-B Radiation
in Lhasa， Tibet
Paper 4 Solar UV Irradiance Measurements at Four Sites in Tibet
Paper 5 Spatial Distribution and Temporal Variation of Solar UV Radiation
over the Tibetan Plateau
Paper 6 Solar UV Radiation Measurements across the Tibetan Plateau
Paper 7 Comparison of Ground-based Measurements of Solar UV Radiation
at Four Sites on the Tibetan Plateau
Paper 8 Impact of Particulate and Dissolved Material on Light Absorption
Properties in a High-altitude Lake in Tibet， China
Paper 9 Human Vitamin D Deficiency in Tibet
Paper 10 The Observational Study of Erythemal UV Radiation on the Land
Surface of Tibet