Simulations of the observation of clouds and aerosols with the Experimental Lidar in Space Equipment system
2000
We carried out a simulation study for the observation of clouds and
aerosols with the Japanese Experimental Lidar in Space Equipment
(ELISE), which is a two-wavelength backscatter lidar with three
detection channels. The National Space Development Agency of Japan
plans to launch the ELISE on the Mission Demonstrate Satellite 2
(MDS-2). In the simulations, the lidar return signals for the
ELISE are calculated for an artificial, two-dimensional atmospheric
model including different types of clouds and aerosols. The signal
detection processes are simulated realistically by inclusion of various
sources of noise. The lidar signals that are generated are then
used as input for simulations of data analysis with inversion
algorithms to investigate retrieval of the optical properties of clouds
and aerosols. The results demonstrate that the ELISE can provide
global data on the structures and optical properties of clouds and
aerosols. We also conducted an analysis of the effects of cloud
inhomogeneity on retrievals from averaged lidar profiles. We show
that the effects are significant for space lidar observations of
optically thick broken clouds.
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