http://www.rssboard.org/rss-specification 720 https://escholarship.org/uc/sio_mplag/rss Recent eScholarship items from MPL Atmospheric Group Tue, 16 Jun 2026 01:20:25 +0000 https://escholarship.org/uc/item/9b8765pc <p>The primary goals of this project for JTO and ONR (Grant N00014-07-1-1060) were to further develop Extinction Imagers for use in the ocean environment, and to extend the capabilities into the Short Wave IR (SWIR).  Extinction Imaging is a method for determining the effective extinction coefficient over an extended path using a sensor at one end of the path.  It uses calibrated imagers to acquire the relative radiance of a dark target near the other the end of the path and the horizon sky in the direction of the dark target.  It is completely passive and thus covert, and the hardware is robust and relatively inexpensive.  It uses rigorous equations, which determine the extinction coefficient from the measured apparent contrast of the radiance of the dark target with respect to the horizon sky. </p><p> </p><p>The project was very successful.  We found that the ocean surface could readily be used as a dark target in red and SWIR wavelengths.  Both the red and the SWIR measurement... https://escholarship.org/uc/item/9b8765pc Thu, 13 Nov 2014 00:00:00 +0000 Shields, Janet Eleanor https://escholarship.org/uc/item/3js9w1n1 AOG Memo AV11-018t, "Transmittance Results from Slant Path Transmittance Algorithm Version 1" https://escholarship.org/uc/item/3js9w1n1 Thu, 13 Nov 2014 00:00:00 +0000 Shields, Janet Eleanor https://escholarship.org/uc/item/6cz2r05j Day/Night Whole Sky Imagers for 24-h cloud and sky assessment: history and overview https://escholarship.org/uc/item/6cz2r05j Wed, 29 Oct 2014 00:00:00 +0000 Shields, Janet E