The objectives of the Australian Monsoon Experiment (AMEX) were: a) to investigate the interactions between cumulonimbus convection and the Australian summer monsoon circulation; and b) to investigate the generation, evolution and propagation mechanisms of north Australian cloud lines, and to study their effect on north Australian weather. The experiment was based on the collection of high-density tropical upper-air soundings and radar and satellite data during two observational phases in October-November 1986 and January-February 1987. The second phase was complementary to, and carried out as a collaborative exercise with, the research aircraft-based EMEX and STEP experiments. The field phases of AMEX were extremely successful. Atmospheric phenomena captured within the observational network include more than ten north Australian cloud lines, the monsoon onset and two active-inactive cycles of monsoon convection. In addition during Phase II four tropical cyclones developed within the network including two within an approximately 500 km diameter circle of radiosondes surrounding the Gulf of Carpentaria. This paper describes some of the highlights obtained from analysis of the data in the first year following the completion of the field phases, the emphasis being on aspects of the meteorology that were not known prior to the experiment.
McBride et al. (Wed,) studied this question.
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