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