Professional Service
    	2013        
    
      - Guest Speaker, 2-Meeting of the RICCAR Vulnerability Assessment Working Group (VA-WG). Adaptation to Climate Change in the Water sector in the MENA region. Sponsored by United Nation-ESCWA, Lebanon June 25 - 28, 2013.
       
    
    
      - Guest Speaker, 3-Meeting of the RICCAR Vulnerability Assessment Working Group (VA-WG) Adaptation to Climate Change in the Water sector in the MENA region sponsored by United Nation-ESCWA Jordan November 24 - 26, 2013. 
       
    
    
      - Invited Speaker, United Nation, Economic and Social Commission for Western Asia (UN-ESCWA), RICCAR workshop, Beirut, Lebanon. November 24 - 26, 2013. 
 
    
      
    2012
    
    
      - Invited Speaker, United Nation, Economic and Social Commission for Western Asia (UN-ESCWA), RICCAR workshop, Beirut, Lebanon. July 2 - 6, 2012. 
       
    
    
      - Invited Speaker, Geography Department, UNC-Chapel Hill. Space Data Integration for Water Resource Exploration in Arid Lands, March 30, 2012.
 
    
      
    2011
    
    
      - Invited Speaker, American University at Cairo (AUC). Greening the Sahara, December, 25, 2011.
       
    
    
      - Invited Speaker, Future University (FU), Greening the Sahara, December, 16, 2011.
       
    
    
      - Invited Speaker, University of Medical Sciences and Technology (UMST), Greening the Sahara, December, 21, 2011.
       
    
    
      - Invited Speaker, Future University (FU), Greening the Sahara, December, 16, 2011.
       
    
      
      
    
      - Session Chair, Geological Society of America (GSA), Southeastern Section. Session on Geomorphology, Remote Sensing, and Geographic Information Systems, March 2011. 
 
    
    	2010
    
      - Guest Speaker, UNDP: Regional Consultation Meeting on the Climate Change Impacts in the Arab Region: Water Scarcity, Drought, and Population Mobility. Syria, September 15-16, 2010.
 
      
      
      - Invited Lecturer, American University at Cairo (AUC), Remote Sensing and GIS training course, June, 12-17, 2010.
 
    
    2009
  - Invited Speaker,  The Arab Environment: Climate Change, the annual conference of the Arab Forum for Environment and Development (AFED), Beirut, November 19-20, 2009.
   
  - Invited Speaker, The use of Radar space data for groundwater exploration in arid regions.  National Authority of Remote Sensing and Space Science (NARSS), Cairo, August 10, 2009.
 
2008
  - Invited Lecturer, Department of Geology, Faculty of Science, Suez Canal University, Egypt. August 25, 2008
   
  - Invited Lecturer, Computer-Man Collage, Khartoum Sudan. August 6, 2008.
 
  - Conference Chair, American Association of Geographer (AAG), session on Remote Sensing of the Environment (2), Boston, USA. April 14-19, 2008.
 
2007
  - Invited Lecturer,Department of Geosciences Hamilton College, NY, US. December 5, 2007
 
  - Space data processing for the book entitled: "Development Corridor: Securing a better future for Egypt", Farouk El-Baz (edit), El-Ain Publishing House, Cairo, Egypt, p. 167 (2007)
 
	2006
  - Invited Scientist, Founding Conference for Expatriate Arab Scientist, Doha, Qatar April 24-26, 2006.
    
Regular reviewer for the Following National & International Journals
  -   National Science Foundation (NSF)
 
  - Remote Sensing of Environment
 
  -  Journal of Arid Environment
 
  -  International Journal of Remote Sensing
 
Contributed to the training of professionals in Geographical Information Systems (GIS) & Remote Sensing (RS) from many countries including: 
  - United States of America (University of Missouri-Rolla)
 
  - Unites Arab Emirates (Ajman University of Science and Technology, and Sharjah Electricity and Water Authority)
 
  - Saudi Arabia (King Abdul-Aziz City for Science and Technology)
 
  - Lebanon (National Council for Scientific research/Remote Sensing Center)
 
  - Egypt (Desert Research Center, Suez Canal University and South Valley University)