University of Caifornia/Davis 75.

15 Numerical and theoretical studies have shown that mesoscale gradients in land surface properties can induce circulations in the atmosphere. This study provides the first well-resolved observations of such flows induced by soil moisture from recent rainfall, and is based on aircraft data in the Sahel. Satellite imagery was used to identify fine scale soil moisture features within a wet zone s...

ii DEDICATION This work is dedicated to my wife Dr. Therese Bu Akl– for being a caring and supportive partner who made my life such a wonderful journey; to my daughters Maria and Yasmine– for their patience and love; and to my sister Susan and her husband Alex – for their kindness and support. Thank you. ACKNOWLEDGMENTS I would like to express my appreciation to Dr. Joon Sang Lee for the vital ...

Das CROQUE Projekt HK SGG besch aftigt sich mit verschiedenen Aspekten der Optimie rung objektorientierter Anfragen Ausgangspunkt sind Anfragen in ODMGs OQL Cat formalisiert in RS die zun achst intern in einem hybriden Ansatz aus Kalk ul und Algebra dargestellt werden GKG und dann mittels eines regel und kostenbasierten Optimierers umgeformt werden sollen Die kostenbasierte Komponente besteht d...