Bremen 2000 – scientific programme

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UP: Umweltphysik

UP 2: Poster: Instrumente (Atmosph
äre)

UP 2.1: Poster

Tuesday, March 21, 2000, 16:15–17:00, Foyer

JEM/SMILES, A Superconducting Sub-millimeter Wave
Limb Emission Sounder — •Thomas Kuhn, Stefan Bühler, and Klaus Künzi — Univ. Bremen, Inst. of Environmental Physics, P.O. Box 33 04 40, D-28334 Bremen

JEM/SMILES is a heterodyne sub-millimeter receiver which will be installed on the ELM-ES platform of the Japanese Experimental Module (JEM) on the International Space Station in 2003.
The main aims of this project are the development and use of superconducting mixers (superconductor-insulator-superconductor, SIS technology) in a heterodyne sub-millimeter receiver for remote sensing of the atmosphere from space.
The three frequency bands of JEM/SMILES have a bandwidth of 1.2 GHz each and start at 624.3, 625.1, and 649.1 GHz. Besides ozone, several important species for the ozone destruction have signatures in this sub-mm range for example ClO, ClO₂, BrO, and HO₂ which are involved in the odd chlorine and Cl-Br catalytic cycles, and reservoir gases like HCl, HOCl, HNO₃, and H₂O₂.