CONTENTS / (0003.jp2)

CHAPTER1.INTRODUCTION / p1 (0006.jp2)

CHAPTER2.HISTORICAL REVIEW / p6 (0011.jp2)

2-1 Finding of the stratospheric ozone layer / p6 (0011.jp2)

2-2 The world wide network of ozone observation / p6 (0011.jp2)

2-3 Development of the vertical ozone profile observation / p7 (0012.jp2)

2-4 Development of the theoretical study of the ozone layer / p7 (0012.jp2)

CHAPTER3.OZONE OBSERVATIONS / p11 (0016.jp2)

3-1 Observation of the total ozone amounts / p11 (0016.jp2)

3-2 Observation of the vertical profile of ozone / p13 (0018.jp2)

CHAPTER4.OZONE OBSERVATION AT SYOWA STATION / p15 (0020.jp2)

4-1 Introduction / p15 (0020.jp2)

4-2 The extensive ozone observation at Syowa,Antarctica from February 1982 to January 1983(The first detection of the Antarctic ozone hole) / p17 (0022.jp2)

4-3 Observation of the total ozone amount with moonlight / p21 (0026.jp2)

CHAPTER5.ANALYSES OF THE LONG TERM VARIATION OF THE OZONE LAYER OVER ANTARCTICA / p23 (0028.jp2)

5-1 Introduction / p23 (0028.jp2)

5-2 Data set / p24 (0029.jp2)

5-3 The starting year of the Antarctic ozone hole / p24 (0029.jp2)

5-4 Total ozone variance at Syowa Station / p26 (0031.jp2)

5-5 Ozone depletion in the polar night at Syowa Station / p26 (0031.jp2)

5-6 Vertical profile of ozone decrease / p27 (0032.jp2)

5-7 Total ozone decreasing area in the southern hemisphere / p28 (0033.jp2)

5-8 The positive correlation between total ozone and air temperature in the lower stratosphere / p29 (0034.jp2)

5-9 Relationship between total ozone amounts and stratospheric temperature at Syowa Station,Antarctica / p30 (0035.jp2)

5-10 The change of the vertical profiles of ozone / p33 (0038.jp2)

5-11 Variance of the air temperature in the stratosphere and the zonal wind component / p34 (0039.jp2)

5-12 Ozone hole in the northern hemisphere / p35 (0040.jp2)

CHAPTER6.DISCUSSION / p36 (0041.jp2)

6-1 The difference of the monthly mean total ozone in October at Syowa Station from that of the Halley Bay Station / p36 (0041.jp2)

6-2 Starting year of the Antarctic ozone hole / p36 (0041.jp2)

6-3 The seasonal start of the Antarctic ozone hole / p37 (0042.jp2)

6-4 The positive correlation between total ozone and air temperature in the lower stratosphere / p37 (0042.jp2)

6-5 The development of the Antarctic ozone hole / p38 (0043.jp2)

6-6 The ozone decrease in the northern hemisphere / p40 (0045.jp2)

CHAPTER7.CONCLUDING SUMMARY / p41 (0046.jp2)

ACKNOWLEDGMENTS / p42 (0047.jp2)

SUPPLEMENT / p43 (0048.jp2)

REFERENCES / p44 (0049.jp2)

TABLE / p50 (0055.jp2)

FIGURES / p51 (0056.jp2)