HAMSR Microwave Sounder on Global HawkHAMSR Microwave Sounder on Global HawkBjorn Lambrigtsen, Shannon Brown - JPLBjorn Lambrigtsen, Shannon Brown - JPL

Thermodynamic structure– T(z), q(z), L(z) - clear & cloudy– Rain rate, IWP (experimental)– 1 km V x 2 km H in 40-km swath– 25 channels: 50, 118 and 183 GHz

Convective structure– Radar-like reflectivity– 1 km vert.res/40 km swath– Conv.intens., precip(z), ice(z)

2 km

3 km

4 km

5 km

6 km

7 km

8 km

9 km

10 km

11 km

12 km

13 km

14 km

15 km

3D reflectivity, Hurricane Emily (2005)

Multiple platforms– ER-2 (CAMEX-4, TCSP)– DC-8 (NAMMA)– Global Hawk (ready late 2009)

New receiver technology– 183 GHz receiver upgraded

with LNA developed underNASA/ESTO/ACT

– Noise reduced by an order ofmagnitude

– Defines new state-of-the art

Noise reduced from 2 K to 0.2 K