recombinational repair of DNA damage. Thus the level of terrestrial solar UV-B radiation likely affects genome stability in plants. See also Color temperature Coronal radiative losses Diathermancy Fraunhofer lines List of cities by sunshine duration Moonlight Overillumination Photic sneeze reflex Photosynthesis Starlight References Further reading Hartmann, Thom (1998). The Last Hours of Ancient Sunlight. London: Hodder and Stoughton. . External links Solar radiation – Encyclopedia of Earth Total Solar Irradiance (TSI) Daily mean data at the website of the National Geophysical Data Center Construction of a Composite Total Solar Irradiance (TSI) Time Series from 1978 to present by World Radiation Center, Physikalisch-Meteorologisches Observatorium Davos (pmod wrc) A Comparison of Methods for Providing Solar Radiation Data to Crop Models and Decision Support Systems, Rivington et al. Evaluation of three model estimations of solar radiation at 24 UK stations, Rivington et al. High resolution spectrum of solar radiation from Observatoire de Paris Measuring Solar Radiation : A lesson plan from the National Science Digital Library. Websurf astronomical information: Online tools for calculating Rising and setting times of Sun, Moon or planet, Azimuth of Sun, Moon or planet at rising and setting, Altitude and azimuth of Sun, Moon or planet for a given date or range of dates, and more. An Excel workbook with a solar position and solar radiation time-series calculator; by Greg Pelletier ASTM Standard for solar spectrum at ground level in the US (latitude ~37 degrees). Detailed spectrum of the Sun at Astronomy Picture of the Day. Light Atmospheric radiation Climate forcing Solar energy Light sources IARC Group 1 carcinogens