W. Wilms-Grabe, U. Corsmeier, W. Junkermann, F. Holland, B. Neininger and Ch. Kottmeier

W. Wilms-Grabe, U. Corsmeier, W. Junkermann, F. Holland, B. Neininger

and Ch. Kottmeier

TRACKS

Transport and Chemical Conversion in Convective Systems (Coordination: Ch. Kottmeier)

2

7th COPS WorkshopCollège Doctoral Européen

Strasbourg, France, 27 - 29 October 2008

TRACKS: Air Pollution and Convection W. Wilms-Grabe et al.

Aims of TRACKS: Vertical transport and chemistry of trace gases in convective systems and above complex terrain

Dilution of pollutants and cleaning of PBL City plume in a convective boundary layer: transport and chemistry of trace gases

City Plume: Airborne Platforms

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Dornier 128(IMK Karlsruhe (KIT) /

University of Braunschweig) Ultralight(IMK Karlsruhe/Garmisch-P.)

Dimona (Metair / ICG-2 FZ Jülich)

Zeppelin NT(ICG-2 FZ Jülich/

IMK Karlsruhe (KIT))

Flight with plume velocity Lagrangian Experiment

Where: City plume of Karlsruhe

Lagrangian Experiment

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When: High pressure and clear sky conditions

25/07/2007, 13:00 – 17:00 UTC

assumed plume

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13:22 UTC 16:55 UTC

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W. Junkermann, 2008

Conclusions

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City plume of Karlsruhe was detected under convective weather conditions. NO2 didn‘t show a very high but nevertheless a clear signal of mass flux into the lee of Karlsruhe. Ozone was build up about 4-6 ppb on a distance about 40 km from emission sources. CO2 increases due to CO emissions and photochemistry by about 4 ppm. PM10 aerosols show a „typical plume behaviour“. O3 of Dimona too high.

The Karlsruher city plume of 25/07/07 is not an extreme event, but show ordinary conditions.

What do we learn?

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The use of a Zeppelin as measurement platform is helpful, but more experience with the Zeppelin is essential.

Transport processes of air pollutants during moderate convective conditions could be investigated. This knowledge is important for studies of vertical transport and studies due to the healthy of the population.

DO 128 provides reliable trace gas data also for further IOPs.

What do we plan?

Modelling the Lagrangian experiment with COSMO-ART.

Investigation of vertical transport processes in convective systems.

Flight pattern of Dornier 128 at 25/07/07

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TRACKS: Air Pollution and COnvection W. Wilms-Grabe et al.

Flight timetable at 25.07.

25/07/2007

h(UTC)

11 12 13 14 15 16 17

min 00

15

30

45

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15

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45

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15

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45

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15

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45

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15

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45

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DO 128

Zeppelin

Dimona

UL

Dimona: 9:00 to 18:29 UTCUltralight: 13:46 to 17:03 UTC

Zeppelin NT: 11:15 to 14:40 UTCDornier 128: 13:22 to 16:55 UTC

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13:22 UTC 16:55 UTC

Weitere TRACKS-relevante Flüge der DO 128

• 20.06.2007 Flug 1: 11:00 – 14:20 (ebenso Enduro) Flug 2: 15:00 – 18:20• 01.07.2007 Flug 1: 06:53 – 09:25 Flug 2: 10:28 – 13:06 Flug 3: 15:16 – 17:50 (zusätzliche Dropsonden-Messungen)• 02.07.2007 Flug 1: 12:05 – 14:46 Flug 2: 16:00 – 18:30• 09.07.2007 Flug 1: 11:58 – 15:26 Flug 2: 16:35 – 19:02• 14.07.2007 Flug 1: 05:51 – 08:53 Flug 2: 09:51 – 13:13 (ebenso SAFIRE Falcon) Flug 3: 14:06 – 17:30• 18.07.2007 Flug 1: 12:54 – 16:24 (ebenso SAFIRE Falcon, DLR Falcon, BAE 146) • 19.07.2007 Flug 1: 13:55 – 17:09 (ebenso SAFIRE Falcon, BAe 146, MPIC Learjet)• 20.07.2007 Flug 1: 07:34 – 10:00 (ebenso SAFIRE Falcon, DLR Falcon) Flug 2: 13:50 – 16:24 (ebenso SAFIRE Falcon, DLR Falcon, BAe 146)

W. Wilms-Grabe, U. Corsmeier, W. Junkermann, F. Holland, B. Neiningerand Ch. Kottmeier

Documents

W. Wilms-Grabe, U. Corsmeier, W. Junkermann, F. Holland, B. Neininger and Ch. Kottmeier