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Evaluation of Surface Irradiance in Models using ARM Data: A 20-year Retrospective

This study assesses surface irradiance using ARM data over 20 years, highlighting biases in model performance and the contributions of various processes. Despite complex analysis techniques, significant positive biases in surface downwelling SW irradiance remain.

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Evaluation of Surface Irradiance in Models using ARM Data: A 20-year Retrospective

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  1. Evaluation of Surface Irradiance in Models using ARM Data:A 20-year Retrospective Laura Hinkelman

  2. In the beginning:

  3. In the beginning:

  4. Background:

  5. !! Background:

  6. Results:

  7. Results:

  8. Summary:

  9. Summary:

  10. 1999 At the same time....

  11. 2003

  12. The Biggest User

  13. The Biggest User

  14. The Biggest User

  15. The Biggest User

  16. The Biggest User

  17. The Biggest User

  18. The Biggest User

  19. The Biggest User

  20. Clear sky All sky 2011 SWDN SWDN LWDN LWDN SWUP SWUP LWUP LWUP

  21. Breaks down contributions of multiple processes to irradiance errors. Integrates observations over entire SGP area. 2018 And now....

  22. Net SW Net LW Attribution

  23. Long-term irradiance measurements from ARM have been extremely useful for evaluating model performance. Analysis techniques have become increasingly complex. Still large positive biases in surface downwelling SW irradiance. Conclusions

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