Andrew Sayer - 613 Seminar Series

Past, present, and near-future satellite instruments all have insufficient measurement capabilities to determine aerosol optical and microphysical properties unambiguously to the level of uncertainty which is desired by many different applications. The underdetermined nature of the problem has resulted in multiple different algorithms, many sensor-specific, for the remote sensing of aerosol properties. Chiefly, these have been the midvisible aerosol optical depth (AOD) and its spectral dependence, normally parameterised in terms of the Ångström exponent (AE). One such algorithm is known as 'Deep Blue', due to its initial development using satellite measurements in the shorter-wavelength end of the blue part of the visible spectrum (around 412 nm), and which is marking its 10-year anniversary of publication this year (Hsu et al., IEEE TGARS, 2004). This talk will cover satellite aerosol remote sensing, with a focus on the application of Deep Blue to the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) and Moderate Resolution Imaging Spectroradiometer (MODIS) instruments, as well as a new application of Deep Blue to measurements made by the Visible Infrared Imaging Radiometer Suite (VIIRS), launched in late 2011.