HAMPThe Microwave Package on the

upcomingHALO (high altitude and long range)

research aircraft

Mario Mech1,2, Susanne Crewell1, Gerhard Peters2, Lutz Hirsch2,

and Thomas Rose3

1 University of Cologne, Germany2 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

...

buisiness jet GulfstreamG550 buisiness jet GulfstreamG550 transformed into research transformed into research

platform for airborne platform for airborne atmospheric science and Earth atmospheric science and Earth

observationsobservations

High Altitude and LOnge - new aircraft of the German atmospheric science

community

Oberpfaffenhofen

10000 km one way

UTLS

HALO - Microwave Packagebasic instrumentation

GOMASCIWSIR

Cloud Radar MIRA-36

frequency 36.5 GHzsensitivity -48 dBZvert. res. 30 m

along track res. 250/50 m

across track res. 50 m

variables Z,vdoppler,LDRprovided by University of

Hamburg

preparative work for the cloud radar

Hamburg 2007/05/13

(Bauer and Goersdorf, 2007)

removing atmospheric plankton (LDR, structure, T)

PMW radiometer specificationsK V W F G

Frequencies

22.24 50.30 90.0 118.75±8.5

183.31±12.5

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

26.24 183.31±2.5 27.84 183.31±1.5 31.40 183.31±0.6

FWHM 4.0° 3.5° 2.5° 2.5° 2.5°

K,V G

simulated brightness temperatures

• CRM - Méso-NHCRM - Méso-NH• 5 hydrometeor categories - 5 hydrometeor categories - cloud, cloud ice, snow, cloud, cloud ice, snow, graupel, raingraupel, rain

• 1-D, plan-parallel RT 1-D, plan-parallel RT modelmodel• spherical particles with spherical particles with frequency-dependent frequency-dependent density/size modification density/size modification (Staelin, 2008)(Staelin, 2008)• emissivity ([l] maps,[o] emissivity ([l] maps,[o] model) model)

OceanLand

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!