1

ENVISAT Validation using the

DLR Falcon 20 Research Aircraft

• Overview over the Validation Activities

Prepared by Andreas Fix, 04/11/02

The Falcon 20 D-CMET

ENVISAT Validation activities of the Falcon

2 Different Missions with different Payloads and Objectives:

SCIA-VALUE MIPAS-Val

Main Objective SCIAMACHY level-2 dataproducts:O3, N2O, NO2, BrO, ClO,H2O, OClO, and cloud andaerosol optical properties

MIPAS level-2 products:

H2O

Campaigns 2 Campaigns:Arctic to TropicsSept. 2002, Feb. 2003

1 Campaign:Mid-LatitudesForli, Italy (Oct. 2002)

Payload - AMAXDOAS, (UBremen, U Heidelberg)

- ASUR (U Bremen)- OLEX (DLR)

- H2O-DIAL- In-situ H2O, O3,

and aerosol(all DLR)

Sponsor DLR BMBF

SCIA-VALUE(SCIAMACHY Validation and Scientific Utilisation Experiment)

Working Groups:

University of Heidelberg, Germany: T. Wagner, K.-P. Heue, U. Platt, University of Bremen, Germany: H. Küllmann, A. Kleinböhl, K. Künzi,

A. Richter, M. Bruns, P. Wang, J.P. Burrows

German Aerospace Center (DLR): A. Fix, G. Ehret

Objectives:

Validation of SCIAMACHY level-2 data

products:

O3, N2O, NO2, BrO, ClO,

H2O, OClO, and cloud and aerosol

optical properties

SCIA-VALUE Falcon Payload

ASUR AMAXDOAS OLEX

Airborne SUbmillimeterwave Radiometer

Airborne MultiAxisDifferential Optical

Absorption SpectrometerOzone Lidar Experiment

U of Bremen U of BremenU of Heidelberg DLR

profiles ofO3, H2O, N2O, ClO, and

BrO

stratospheric andtropospheric columns ofO3, NO2, BrO, and OClO

profiles of O3,stratospheric aerosol

extinction,aerosol/molecularbackscatter ratios,

particle depolarisation

SCIA-VALUE: Falcon Payload

Falcon 20 equipped with the three remote sensing instruments ASUR, AMAXDOAS, and

OLEX for air-borne validation of SCIAMACHY data products O3, N2O, NO2, BrO, ClO,

H2O, OClO, and cloud and aerosol optical properties

2 Main Campaigns:(~ 100 flight hours)• 6-28. September 2002

successfully performed• Feb/Mar 2003

(planned)

SCIA-VALUE: Flight Tracks

Summary of SCIAMACHY overpasses

during the September 2002 campaign

Date OrbitCrossed Orbit

IndexFlight Leg

Departure[UTC]

Arrival[UTC]

Northern Route02/09/03 2667 10,11,12 Munich - Kiruna 08:00 10:3002/09/04 2685, 2686 7,5 Kiruna - Kiruna via Longyear 16:00 19:3002/09/05 2696,2697 10,11 Kiruna - Keflavik 10:00 13:0002/09/06 2712, 2713 10. Nov Keflavik - Sondre 12:50 15:0002/09/07 2726, 2727 10 Sondre - Keflavik 12:30 14:30

02/09/08 2730Occultation61.8° lat.,351.9° lon.

Keflavik - Munich 18:20 22:00

Southern Route02/09/15 2839 12 Munich - Palma de Mallorca 09:15 11:0002/09/17 2867 13-17 Palma de Mallorca -Yaounde 05:45 15:3002/09/18 2880, 2881 17,18 Yaounde - Nairobi 08:30 11:3002/09/19 2894 18,19 Nairobi - Seychelles 05:00 07:3002/09/24 2966 17,18 Seychelles - Nairobi 06:30 08:3002/09/25 2981 17,18 Nairobi - Yaounde 06:30 09:4502/09/26 2996 13,16 Yaounde - Palma de Mallorca 05:30 15:0002/09/28 3025 11,12 Palma de Mallorca - Munich 09:30 11:00

Falcon passing Kilimanjaro, Kenia

MIPAS-VAL

Objectives:

- The measurement of water vapour and aerosol profiles using the airborne H2O-DIAL of DLR as the core instrument and the comparison of these data to the respective MIPAS Level 2-products.

- Intercomparison with the remote and in-situ GEOPHYSIKA instruments measuring water vapour and aerosol (i.e. MIPAS-STR,SAFIRE-A, FISH, FLASH, MAL, MAS, FSSP, ABLE)

- Measurement of small-scale structures in the tropopause region, the comparison of these results with the ENVISAT products and model results of climate and climate-chemistry models.

Campaign:

- Joint campaign with the GEOPHYSIKA mid-latitude validation activities (Forli’, Italy (October 2002))

MIPAS-VAL: Falcon Payloadall instruments operated by DLR (PI: Andreas Fix)

Remote SensingAdditional In-Situ

Instruments

Water Vapour DIAL(Core Instrument)

OzoneFrostpoint Hygrometer

Aerosol payload

profiles of H2O above flight level,stratospheric aerosol extinction,

aerosol/molecular backscatter ratios,particle depolarisation

In-situ O3, H2O,and particle size distribution

Summary of MIPAS overpasses during the Forli‘ 2002 campaign (14-

28/10/02)

Date Orbit Crossed Scan IndexDeparture

[UTC]Arrival[UTC]

14/10/02 3261 7, 8 18:50 21:15

17/10/02 )* 08:45 12:10

18/10/02 3318 6, 7 18:45 21:45

22/10/02 3368 )* 26, 27 07:10 10:50

23/10/02 3390 7 18:45 21:50

24/10/02 3404 )* 6, 7 18:50 22:10

25/10/02 3411 25, 26 09:05 11:45

28/10/02 3454 )* 26, 27 07:10 10:45

8 Falcon Flights total (25.5 h)4 Flights co-ordinated with GEOPHYSIKA )*4 flights at daylight4 flights at night-time

Summary

2 Falcon Missions:

SCIA-VALUE

2 main measurement campaigns (~50 flight hours each) First campaign succesfully performed (Sep. 2002) Second campaign scheduled for Feb/Mar 2003 No need to change flight plan or instrumentation

MIPAS-VAL

Validation campaign (Forli‘ 2002, ~25 flight hours) successfully performed

No further campaign activity within this mission