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Thursday, March 28, 2024
Home Space-borne measurements of the total solar irradiance (TSI) show ~0.1 percent variations with solar activity on 11-year and shorter timescales. These data have been corrected for calibration offsets between the various instruments used to measure TSI. (SOURCE: Courtesy of Greg Kopp, University of Colorado.) Space-borne measurements of the total solar irradiance (TSI) show ~0.1 percent variations with solar activity on 11-year and shorter timescales. These data have been corrected for calibration offsets between the various instruments used to measure TSI. (SOURCE: Courtesy of Greg Kopp, University of Colorado.)

Space-borne measurements of the total solar irradiance (TSI) show ~0.1 percent variations with solar activity on 11-year and shorter timescales. These data have been corrected for calibration offsets between the various instruments used to measure TSI. (SOURCE: Courtesy of Greg Kopp, University of Colorado.)

Space-borne measurements of the total solar irradiance (TSI) show ~0.1 percent variations with solar activity on 11-year and shorter timescales. These data have been corrected for calibration offsets between the various instruments used to measure TSI. (SOURCE: Courtesy of Greg Kopp, University of Colorado.)

Space-borne measurements of the total solar irradiance (TSI) show ~0.1 percent variations with solar activity on 11-year and shorter timescales. These data have been corrected for calibration offsets between the various instruments used to measure TSI. (SOURCE: Courtesy of Greg Kopp, University of Colorado.)

These six extreme UV images of the sun, taken by NASA’s Solar Dynamics Observatory, track the rising level of solar activity as the sun ascends toward the peak of the latest 11-year sunspot cycle.
This image of the Sun’s upper photosphere shows bright and dark magnetic structures responsible for variations in TSI. (SOURCE: Courtesy of P. Foukal, Heliophysics, Inc.)