Tomographic reconstruction of an aerosol plume using passive multiangle observations from the MISR satellite instrument

作者：Garay Michael J^*; Davis Anthony B; Diner David J

来源：Geophysical Research Letters, 2016, 43(24): 12590-12596.

DOI：10.1002/2016GL071479

We present initial results using computed tomography to reconstruct the three-dimensional structure of an aerosol plume from passive observations made by the Multi-angle Imaging SpectroRadiometer (MISR) instrument on NASA's Terra satellite. MISR views the Earth from nine different angles at four visible and near-infrared wavelengths. Adopting the 672 nm channel, we treat each view as an independent measure of aerosol optical thickness along the line of sight at 1.1 km resolution. A smoke plume over dark water is selected as it provides a more tractable lower boundary condition for the retrieval. A tomographic algorithm is used to reconstruct the horizontal and vertical aerosol extinction field for one along-track slice from the path of all camera rays passing through a regular grid. The results compare well with ground-based lidar observations from a nearby Micropulse Lidar Network site.

• 出版日期2016-12-28