Representatives from the LMSA (Japan), LSA (Europe), and MMA (USA) projects met in Tucson on March 10 and 11 to discuss site testing in the area of Pampa la Bola and Cerro Chajnantor. They were joined by colleagues from Cornell, the Smithsonian SMA, CTIO and Gemini. There was a review of measurements over the last three years consisting of meteorology, atmospheric transparency, and atmospheric stability, with particular emphasis on recent measurements at submillimeter wavelengths. This was followed by discussion of future, possibly joint efforts to study the physical structure of the atmosphere, in particular the height distribution of water vapor and turbulence, and to test schemes for radiometric correction of interferometer phase.

--- S. Radford