Volume 33 Issue 4
Jul.  2013
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Article Navigation >  Chinese Journal of Space Science  > 2013  >  33(4): 403-409
FAN Lei, WEI Fei, FU Yang, ZHAO Wei, FEI Zengping. Use Double Channel Solar Irradiance Flux to Compute the E10.7 Index[J]. Chinese Journal of Space Science, 2013, 33(4): 403-409. doi: 10.11728/cjss2013.04.403
Citation: FAN Lei, WEI Fei, FU Yang, ZHAO Wei, FEI Zengping. Use Double Channel Solar Irradiance Flux to Compute the E10.7 Index[J]. Chinese Journal of Space Science, 2013, 33(4): 403-409. doi: 10.11728/cjss2013.04.403
shu

Use Double Channel Solar Irradiance Flux to Compute the E10.7 Index

doi: 10.11728/cjss2013.04.403 cstr: 32142.14.cjss2013.04.403
  • 1.

    P.O.Box 5111, Beijing 100094

  • 2.

    Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190

  • 3.

    Beijing Institute of Applied Meteorology, Beijing 100081

  • Received Date: 2012-05-17
  • Rev Recd Date: 2013-03-13
  • Publish Date: 2013-07-15
    Abstract
  • Solar Extreme Ultraviolet (EUV) plays an important role in space weather research and forecasting. The E10.7 index is the integrated EUV energy flux at the top of the atmosphere. Solar 2000 model combines the best of empirical and physics-based models to provide a wide variety of solar irradiance products for science and engineering applications, including E10.7 integrated EUV flux etc. In this paper, the physics significance of the E10.7 index is described, and a new computation method of E10.7 index is also described in details. Double channel solar irradiance flux were used to compute the E10.7 index. At first the experiential coefficients were obtained based on the empirical expression and historical solar irradiance data picked up from the Solar2000 model. Then the new method was applied to solar irradiance flux data from the year of 2000 to 2005, and successfully yields the E10.7 index. The differences between the compute result and the result from Solar 2000 model were achieved. The comparison results show that the mean relative deviation is within 10% with a maximum deviation less than 20%.

     

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