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Agenda

SWI workshop 08-12-2010 Jesper Ellerbæk Nielsen ” Combining C-band and X-band weather radars for accurate precipitation measurements over urban areas” Supervisors: Michael R. Rasmussen (AAU) Rasphal Gill (DMI) Niels Ejner Jensen (DHI). Agenda.

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Agenda

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  1. SWI workshop 08-12-2010Jesper Ellerbæk Nielsen”Combining C-band and X-band weather radars for accurate precipitation measurements over urban areas”Supervisors:Michael R. Rasmussen (AAU)Rasphal Gill (DMI)NielsEjner Jensen (DHI)

  2. Agenda • Comparison of C- and X-band precipitation measurement • Investigation of drop size distributions

  3. Comparison of C- and X-band precipitation measurements • How similar are the detection of the same precipitation events for the two radar systems? • Are there situations where the radar systems has different strength and weaknesses? • Is there a positive potential for integration of the two systems?

  4. Comparison of C- and X-band precipitation measurements • Setup for the experiment 60km 240km 120km 30km 15km

  5. Comparison of C- and X-band precipitation measurements • Static calibration for a two month period (1st of June to 31st July 2009) % %

  6. Comparison of C- and X-band precipitation measurements • Strengths and Weaknesses

  7. Comparison of C- and X-band precipitation measurements • Spatial correlation

  8. Comparison of C- and X-band precipitation measurements • C-band X-band

  9. Investigation of drop size distributions • Laser based distrometer – OTT Parsivel Describing the precipitation by drop size and drop velocity

  10. Investigation of drop size distributions

  11. Investigation of drop size distributions Convective event from 29 of June 2010

  12. Investigation of drop size distributions • Stratiform event from 29th-30th of July 2010

  13. Investigation of drop size distributions • Stratiform event from 29th-30th of July 2010

  14. Investigation of drop size distributions • Stratiform event from 29th-30th of July 2010

  15. Investigation of drop size distributions • Stratiform event from 29th-30th of July 2010

  16. C-band X-band

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