Japan Geoscience Union Meeting 2019

Presentation information

[J] Poster

M (Multidisciplinary and Interdisciplinary) » M-SD Space Development & Earth Observation from Space

[M-SD44] Future Missions of Satellite Earth Observation

Wed. May 29, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Yoshiaki HONDA(Center for Environmental Remote Sensing, Chiba University), Yukari Takayabu(Atmosphere and Ocean Research Institute, the University of Tokyo), Shinichi Sobue(Japan Aerospace Exploration Agency), Yuki Kaneko(Japan Aerospace Exploration Agency)

[MSD44-P05] Global wind measurement system using Doppler Wind Lidar and Imaging FTS

*Okamoto Hajime1, Toshiyoshi Kimura2, Daisuke Sakaizawa2, Shoken Ishii3 (1.Kyushu University, 2.Japan Aerospace Exploration Agency, 3.National Institute of Information and Communications Technology)

Keywords:wind, Geostationary Satellite, lidar

We propose global wind measurement system by using Doppler Wind Lidar (DWL)
and FTS on Geostationary satellites. Wind as atmospheric circulation is the most important element in climate and weather studies. Air- and ship-traffic are also using wind information as most prioritized one to ensure their safe operation. Current systems cannot measure global distribution of winds. Recent progress of DWL technology made precise wind measurement possible in three-dimensional manner, limited to narrow swarth over its orbit. A DWL-satellite was already launched by European Space Agency, and NASA is also planning to launch. In Japan, NICT and JAXA are studying DWL. Also, recent geostationary weather satellite made possible to distinguish wind distribution by altitude using water vapor band imagery. Measurement error is still large. The basic concept is to combine DWL and FTS on Geostationary satellites to complement each other. To cover the globe using geostationary orbit, we need about four satellites at each region. Using current weather satellite network is the most demanded approach. NASA, ESA and JAXA/NICT can make a strong network to maintain data from spaceborne DWLs to calibrate the results of retrieved wind from imaging FTS on Geostationary satellite. The requirement of spacial resolution for the system is 1km horizontal resolution, 300m height distribution, <1m/s windspeed accuracy and wind vector.