Positions Held:
2004 - Present
Associate Research Professor
Laboratory of Tree-Ring Research
The University of Arizona
Tucson, Arizona.
Adjunct Associate Professor
School of Natural Resources
The University of Arizona
Tucson, Arizona.
1997 - 2004
Research Specialist Senior
Laboratory of Tree-Ring Research
The University of Arizona
Tucson, Arizona.
1993 - 1997
Research Specialist
Laboratory of Tree-Ring Research
The University of Arizona
Tucson, Arizona.
1991 - 1993
Postdoctoral Fellow
Laboratory of Tree-Ring Research
The University of Arizona
Tucson, Arizona.
1987 - 1991
Graduate Student Assistant
Laboratory of Tree-Ring Research
The University of Arizona
Tucson, Arizona.
1983 - 1984
Research Assistant
Department of Forestry
University of Aleppo
Aleppo, Syria.
1977 - 1983
Technical Manager
Union of Syrian Agriculture
Aleppo, Syria.