Observational and Theoretical Investigations of Possible Secular Solar Irradiance Variations

美国国家航空和航天局赞助的太阳辐射热成像仪气球飞行定于2003年9月进行，这将是一个重要的机会，可用来测量明亮光球磁结构对太阳总辐照度变化的宽波段光度影响。这些贡献的不确定性目前是评估长期辐照度变化超过目前与太阳黑子、光斑和网络区域变化有关的辐照度变化的可能性的主要障碍之一。这项工作将支持飞行期间协调的地面测光。这将有额外的好处，通过扩大测量的结构范围，提高SBI飞行的科学产出。这项研究的更大意义在于它对气候研究和解释20世纪世纪全球变暖的直接重要性。

The National Aeronautics and Space Administration-sponsored balloon flight of the Solar Bolometric Imager (SBI) is scheduled for September 2003, and it presents an important opportunity to measure the wide-band photometric contributions of bright photospheric magnetic structures to the total solar irradiance variations. Uncertainty in these contributions is presently one of the main obstacles to assessing the likelihood of secular irradiance variations in excess of those now linked to sunspots, faculae and changes in the network area. This effort will support co-ordinated ground-based photometry during the flight. This will have the added benefit of enhancing the science output from the SBI flight by broadening the range of structures measured. The greater significance of the research lies in its direct importance for climate studies and the interpretation of 20th Century global warming.