HAMP The Microwave Package on the upcoming HALO

HAMP The Microwave Package on the upcoming HALO (high altitude and long range) research aircraft Mario Mech 1, 2, Susanne Crewell 1, Gerhard Peters 2, Lutz Hirsch 2, and Thomas Rose 3 1 University of Cologne, Germany 2 Max-Planck Institute Hamburg, Germany 3 Radiometer Physics, Bonn, Germany

What for? Using active and passive instruments in combination for a more comprehensive view on the cloud and precipitation structure Validation for GPM Use in conjunction with the other instruments operated on HALO. . .

High Altitude and LOnge - new aircraft of the German atmospheric science community buisiness jet Gulfstream. G 550 transformed into research platform for airborne atmospheric science and Earth observations 10000 km one way UTLS Oberpfaffenhofen

HALO - Microwave Package basic instrumentation GOMAS CIWSIR

Cloud Radar MIRA-36 frequency 36. 5 GHz sensitivity -48 d. BZ vert. res. 30 m along track res. 250/50 m across track res. 50 m variables Z, vdoppler, LDR provided by University of Hamburg

preparative work for the cloud radar removing atmospheric plankton (LDR, structure, T) Hamburg 2007/05/13 (Bauer and Goersdorf, 2007)

PMW radiometer specifications Frequencies FWHM K, V K V W F G 22. 24 50. 30 90. 0 23. 04 51. 76 118. 75± 4. 2 183. 31± 7. 5 23. 84 52. 8 118. 75± 2. 3 183. 31± 4. 5 25. 44 53. 75 118. 75± 1. 4 183. 31± 3. 5 118. 75± 8. 5 183. 31± 12. 5 26. 24 183. 31± 2. 5 27. 84 183. 31± 1. 5 31. 40 183. 31± 0. 6 4. 0° 3. 5° 2. 5° G

simulated brightness temperatures • 1 -D, plan-parallel RT model • spherical particles with • CRM - Méso-NH • 5 hydrometeor categories - cloud, cloud ice, snow, graupel, rain Ocean. Land frequency-dependent density/size modification (Staelin, 2008) • emissivity ([l] maps, [o] model)

simple retrieval by mutliple regression problems with smaller rain water path amounts

Summary & Outlook cloud radar and selected microwave frequencies seems to have interesting information content cloud radar and passive microwave components are prepared - to be tested on ground late 2009 belly pod with MW components will be mounted on the aircraft 2010 first missions

Thanks!