Application Research of Meteorological Observation system for analyze relationships between terrestrial vegetation and atmosphere

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In order to conduct a long-term meteorological observation together with sensible and latent heat flux in remote area in tropical region, automatic weather station systems are compared. Automatic weather station systems with flux observation have been commercially supplied, these systems often made data lacking period especially operated in tropical region because of high moisture condition. One sensor by one data logger system for meteorological measurement is applied to continuous observation in hill evergreen forest in northern Thailand. Parallel system is recommended for long term observation in remote site. Several result using continuous observed meteorological data by parallel system is presented in this report, such as "Seasonal trend in the occurrence of nocturnal drainage flow on a forested slope under a topical monsoon climate" together with two years records of meteorological factors by this system.