Dale Durran and Joachim Kuettner are gratefully acknowledged for helpful discussions. The efforts of the National Center for Atmospheric Research (NCAR) Field Project Support (FPS) and the T-REX staff are greatly appreciated. The primary sponsor of T-REX is the U.S. National Science Foundation (NSF). We acknowledge also other funding agencies and organizations that have provided funding and in-kind support for various T-REX components including the UK Natural Environmental Research Council (NERC), Met Office UK, U.S. Naval Research Laboratory (NRL), National Oceanic and Atmospheric Administration (NOAA), Deutsches Zentrum für Luft- und Raumfahrt (DLR), Swiss National Science Foundation (SNSF), and the Austrian Science Foundation (FWF). The first and second author, respectively, acknowledge support through ONR PE 0601153N and NSF ATM-0524891. COAMPS is a registered trademark of NRL. The support of Andreas Wieser for DLR lidar observations and lidar analysis software from Ron Calhoun and Christian Kühnlein is acknowledged. The Doppler lidar operated by DLR was leased from Lockheed Martin Coherent Technologies and their technical support is acknowledged. We thank Saša Gaberšek for helpful discussions and graphical contributions.
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