太阳总辐照的演化特征分析
发布时间：2019-02-11 13:36
【摘要】：太阳总辐照(Total Solar Irradiance, TSI)是指在平均日地距离处，单位时间到达地球大气层顶部单位面积的所有波段的太阳电磁辐射能量总和。TSI影响着进入地球系统的总的能量，而这个总能量几乎驱动着地球系统内部所有已知的自然规律和生物圈的循环，是地球最重要的能量来源。在1978年10月“Hickey-Frieden空腔辐射器”(Hickey-Frieden cavity radiometer, HF)观测TSI之前，由于地面观测设备的低准确性，人们认为TSI是一个不变的常数，因此被称为“太阳常数”。自从HF被发射升空以后, TSI就得到了几个辐射计相继进行的连续观测(一般有2～4个辐射计在地球大气层外同时进行)。由于这些空间辐射计具有较高的准确性,人们认识到TSI从几分钟到数十年的时间尺度上都是变化的。TSI产生地球的辐射环境并且影响地球温度和大气,即使较小的持续的TSI的变化都会对地球气候产生深远的影响。因此,弄清楚TSI的变化怎样影响地球气候是非常重要的，，并且现在有了许多这方面的调查研究，尤其是TSI对地球长周期气候变化的影响以及目前全球气候变暖方面都具有非常重要的意义。同时，TSI的研究对我们认识太阳表面及内部的物理过程、地球大气、日地关系等有着非常重要的意义。TSI的空间观测仅仅从1978年开始,由于只有短短的34年的直接观测数据,重构较长时间尺度的TSI是非常重要和必须的,并且现在TSI重构方面取得了长足的进步，但同时也存在一定的不足，所以需要进一步弄清楚TSI变化的物理机制。 首先介绍了太阳辐照目前的研究进展情况以及一些重大成果，包括太阳辐照的观测、重构和演化特征分析。然后我们利用连续小波分析、小波交叉和小波调谐等方法分析TSI与太阳黑子面积和Mg II特征指数的关系，得到了TSI在23和24太阳活动周的准旋转周期是不同的，并且分析出TSI与这些代理物之间的相互关系。 我们利用美国宇航局太阳辐射和气候试验卫星(Solar RadiationClimateExperiment, SORCE)上的太阳总辐照检测仪(Total Irradiance Monitor, TIM)所观测的TSI，以及太阳黑子面积和Mg II线心线翼比的研究表明，太阳总辐照在23和24太阳活动周的显著周期分别为35和26d,进而推断太阳的准旋转周期在23和24太阳活动周也分别为35和26d.太阳总辐照在24周极小期的值可能与蒙德极小期的值相近。在一个太阳旋转周到几个月的时间尺度上,太阳黑子是引起太阳总辐照变化的主要原因,但不是唯一的原因。在几天到一个太阳旋转周的时间尺度上,太阳总辐照的变化与Mg II特征指数是不相关的。利用ACRIM合成的TSI研究发现，在太阳活动周时间尺度上，TSI的变化与太阳黑子和Mg II特征指数是不相关的。
[Abstract]:Total solar radiation (Total Solar Irradiance, TSI) is the sum of solar electromagnetic radiation energy per unit time reaching the top of the Earth's atmosphere per unit area at an average solar-terrestrial distance. TSI affects the total energy entering the Earth's system. This total energy, which drives almost all known natural laws and biosphere cycles within the Earth system, is the most important source of energy for the Earth. Before "Hickey-Frieden cavity radiator" (Hickey-Frieden cavity radiometer, HF) observed TSI in October 1978, because of the low accuracy of ground observation equipment, TSI was regarded as an invariable constant, so it was called "solar constant". Since the launch of HF, TSI has obtained successive observations of several radiometers (usually two to four radiometers simultaneously carried out outside the Earth's atmosphere). Because of the accuracy of these space radiometers, it is recognized that TSI varies over time scales from minutes to decades. TSI produces the Earth's radiative environment and affects the Earth's temperature and atmosphere. Even a small and sustained change in TSI will have a profound impact on Earth's climate. So, it's important to know how TSI changes affect the Earth's climate, and there's a lot of research in this area. In particular, the impact of TSI on the Earth's long-period climate change and the current global warming are of great significance. At the same time, the study of TSI is of great significance for us to understand the physical processes of the sun's surface and interior, the earth's atmosphere, the relationship between the sun and earth, etc. TSI's space observations only began in 1978, because there are only 34 years of direct observation data. It is very important and necessary to reconstruct TSI on a long time scale, and now the TSI refactoring has made great progress, but at the same time there are some shortcomings, so we need to further understand the physical mechanism of TSI change. This paper first introduces the research progress of solar irradiation and some important achievements, including observation, reconstruction and evolution analysis of solar radiation. Then we use the methods of continuous wavelet analysis, wavelet crossover and wavelet tuning to analyze the relationship between TSI and sunspot area and Mg II characteristic index. It is concluded that the quasi-rotation periods of TSI in the 23 and 24 solar cycles are different. The relationship between TSI and these agents is analyzed. We use the total solar radiation detector (Total Irradiance Monitor, TIM) on NASA's Solar radiation and Climate Test Satellite (Solar RadiationClimateExperiment, SORCE) to observe the TSI, as well as the sunspot area and the Mg II line central wing ratio. The significant periods of total solar irradiation at 23 and 24 solar cycles are 35 and 26 days, respectively, and the quasi-rotation cycles of the sun are also 35 and 26 days in 23 and 24 solar cycles, respectively. The value of total solar radiation in the 24 cycle minimum period may be similar to that of the Mond minimum period. Sunspots are the main cause, but not the only, cause of total solar radiation on a time scale of several months' rotation. On the time scale from a few days to the rotation of the sun, the variation of total solar irradiation is not related to the characteristic index of Mg II. Using the TSI synthesized by ACRIM, it is found that the variation of TSI is not related to the sunspot and Mg II characteristic index on the time scale of solar cycle.
【学位授予单位】：中国科学院研究生院（云南天文台）
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P422.1
本文编号：2419777
[Abstract]:Total solar radiation (Total Solar Irradiance, TSI) is the sum of solar electromagnetic radiation energy per unit time reaching the top of the Earth's atmosphere per unit area at an average solar-terrestrial distance. TSI affects the total energy entering the Earth's system. This total energy, which drives almost all known natural laws and biosphere cycles within the Earth system, is the most important source of energy for the Earth. Before "Hickey-Frieden cavity radiator" (Hickey-Frieden cavity radiometer, HF) observed TSI in October 1978, because of the low accuracy of ground observation equipment, TSI was regarded as an invariable constant, so it was called "solar constant". Since the launch of HF, TSI has obtained successive observations of several radiometers (usually two to four radiometers simultaneously carried out outside the Earth's atmosphere). Because of the accuracy of these space radiometers, it is recognized that TSI varies over time scales from minutes to decades. TSI produces the Earth's radiative environment and affects the Earth's temperature and atmosphere. Even a small and sustained change in TSI will have a profound impact on Earth's climate. So, it's important to know how TSI changes affect the Earth's climate, and there's a lot of research in this area. In particular, the impact of TSI on the Earth's long-period climate change and the current global warming are of great significance. At the same time, the study of TSI is of great significance for us to understand the physical processes of the sun's surface and interior, the earth's atmosphere, the relationship between the sun and earth, etc. TSI's space observations only began in 1978, because there are only 34 years of direct observation data. It is very important and necessary to reconstruct TSI on a long time scale, and now the TSI refactoring has made great progress, but at the same time there are some shortcomings, so we need to further understand the physical mechanism of TSI change. This paper first introduces the research progress of solar irradiation and some important achievements, including observation, reconstruction and evolution analysis of solar radiation. Then we use the methods of continuous wavelet analysis, wavelet crossover and wavelet tuning to analyze the relationship between TSI and sunspot area and Mg II characteristic index. It is concluded that the quasi-rotation periods of TSI in the 23 and 24 solar cycles are different. The relationship between TSI and these agents is analyzed. We use the total solar radiation detector (Total Irradiance Monitor, TIM) on NASA's Solar radiation and Climate Test Satellite (Solar RadiationClimateExperiment, SORCE) to observe the TSI, as well as the sunspot area and the Mg II line central wing ratio. The significant periods of total solar irradiation at 23 and 24 solar cycles are 35 and 26 days, respectively, and the quasi-rotation cycles of the sun are also 35 and 26 days in 23 and 24 solar cycles, respectively. The value of total solar radiation in the 24 cycle minimum period may be similar to that of the Mond minimum period. Sunspots are the main cause, but not the only, cause of total solar radiation on a time scale of several months' rotation. On the time scale from a few days to the rotation of the sun, the variation of total solar irradiation is not related to the characteristic index of Mg II. Using the TSI synthesized by ACRIM, it is found that the variation of TSI is not related to the sunspot and Mg II characteristic index on the time scale of solar cycle.
【学位授予单位】：中国科学院研究生院（云南天文台）
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P422.1
【参考文献】
相关期刊论文 前1条
1 ;Recent progress of solar physics research in China[J];Research in Astronomy and Astrophysics;2011年12期
本文编号：2419777
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