Verification of Cloud Analyses used to Support Overhead Imagery Collection
Cleary, Robert J.
Pfeiffer, Karl D.
MetadataShow full item record
We verified the USAF World Wide Merged Cloud Analysis (WWMCA) against observations from the Cloudsat atmospheric sounder. We analyzed WWMCA data for 2010 for two regions that are of high interest to the national intelligence community and that differ in their meteorological characteristics. The two regions covered were (a) much of southwest Asia; and (b) much of western Russia and the Barents Sea. We analyzed WWMCA performance according to four criteria (1) type of cloud event (Definite-Cloud, Probable-Cloud, and No-Cloud); (2) geographic region; (3) time of day; and (4) time of year. We measured WWMCA performance using contingency table metrics and found marked differences in performance for the four criteria. In particular, WWMCA tended to perform better in analyzing (a) No-Cloud and Definite-Cloud events than Probable-Cloud events; (b) the lower latitude region than the higher latitude region; and (c) persistent cloud events than variable cloud events. Our Heidke skill scores indicated that WWMCA performance was, in general, moderately better than that of a random set of analyses. Overall, WWMCA performance was problematic, given that WWMCA is a near real-time analysis product and is designed to initiate short lead time cloud forecasts used by the intelligence community.
Showing items related by title, author, creator and subject.
Performance measurement of a carrier battle group: a case study of the Commander in Chief, U.S. Atlantic Fleet's participation as a performance planning and reporting pilot project for fiscal year 1996 Smith, Robert Lee. (Monterey, California. Naval Postgraduate School, 1996-12);The Commander In Chief, U.S. Atlantic Fleet (CINCLANTFLT) participated as a performance planning and reporting pilot project (PPRP) in support of the short term requirements of the Government Performance and Results Act ...
Lee, Han Chuan. (Monterey, California. Naval Postgraduate School, 2009-12);The previously developed guidance law implemented onboard the Small Unmanned Aerial Vehicle (SUAV) relies exclusively on the information from the image processing software and allows the performance of coordinated SUAV ...
Bang, H.; Agrawal, B.N. (1995);In this paper, a closed-loop switching function for on-off thruster firings is proposed to provide good attitude control performance in the presence of modeling errors for single-axis slew maneuver of a rigid spacecraft ...