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Præsentation af Aalborg Universitet 1 af 16 SWI workshop 08-12-2010 Jesper Ellerbæk Nielsen ”Combining C-band and X-band weather radars for accurate precipitation.

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Presentation on theme: "Præsentation af Aalborg Universitet 1 af 16 SWI workshop 08-12-2010 Jesper Ellerbæk Nielsen ”Combining C-band and X-band weather radars for accurate precipitation."— Presentation transcript:

1 Præsentation af Aalborg Universitet 1 af 16 SWI workshop 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)

2 Præsentation af Aalborg Universitet 2 af 16 Agenda Comparison of C- and X-band precipitation measurement Investigation of drop size distributions

3 Præsentation af Aalborg Universitet 3 af 16 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 Præsentation af Aalborg Universitet 4 af 16 Comparison of C- and X-band precipitation measurements Setup for the experiment 120km 240km 15km 30km 60km

5 Præsentation af Aalborg Universitet 5 af 16 Comparison of C- and X-band precipitation measurements Static calibration for a two month period (1 st of June to 31 st July 2009) % %

6 Præsentation af Aalborg Universitet 6 af 16 Comparison of C- and X-band precipitation measurements Strengths and Weaknesses

7 Præsentation af Aalborg Universitet 7 af 16 Comparison of C- and X-band precipitation measurements Spatial correlation

8 Præsentation af Aalborg Universitet 8 af 16 Comparison of C- and X-band precipitation measurements C-band X-band

9 Præsentation af Aalborg Universitet 9 af 16 Investigation of drop size distributions Laser based distrometer – OTT Parsivel Describing the precipitation by drop size and drop velocity

10 Præsentation af Aalborg Universitet 10 af 16 Investigation of drop size distributions

11 Præsentation af Aalborg Universitet 11 af 16 Investigation of drop size distributions Convective event from 29 of June 2010

12 Præsentation af Aalborg Universitet 12 af 16 Investigation of drop size distributions Stratiform event from 29 th -30 th of July 2010

13 Præsentation af Aalborg Universitet 13 af 16 Investigation of drop size distributions Stratiform event from 29 th -30 th of July 2010

14 Præsentation af Aalborg Universitet 14 af 16 Investigation of drop size distributions Stratiform event from 29 th -30 th of July 2010

15 Præsentation af Aalborg Universitet 15 af 16 Investigation of drop size distributions Stratiform event from 29 th -30 th of July 2010

16 Præsentation af Aalborg Universitet 16 af 16 C-band X-band


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