Development of state-of-the-art observation techniques
The recent observation techniques developed by researchers at the Department of Observation and Data Assimilation Research are shown on this page.
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Water vapor lidar
Water vapor lidar measures the vertical distribution of water vapor mixing ratio in the lower atmosphere. The observational data are used for studying the mechanisms of heavy rainfall and for improving the accuracy of forecasting.
Radar refractivity
Horizontal distribution of refractivity in the low-level atmosphere is observed every 5 min. These data will be used for elucidating the mechanism of localized heavy rainfall, and torrential rainfall, among others, and for improving the accuracy of numerical forecasts.
Aerosol lidar
The aerosol lidar has been observing the vertical distribution of stratospheric aerosol for over 40 years in collaboration with the National Institute for Environmental Studies (NIES) and National Institute of Water and Atmospheric Research (NIWA). The observational data are used for studying the long-term variation of the stratospheric aerosol and its impact on climate change.
Sky radiometer
Spectroradiometers are conducting long-term observations of
aerosol optical properties.
The observational data of spectroradiometers are used
for investigating the long-term variation of aerosol and its impact on climate change.