Alok Kumar Sahoo    Postdocoral Research Fellow    Center for Research on Environment and Water    4041 Powder Mill Road, Suite 302    Calverton, MD 20705-3106 USA    240/247-1444 Phone     301/595-9790 Fax     Email: A. Sahoo

Research Interests:-

Land surface hydrology, Global energy and water budget, Remote sensing, Data assimilation, Land surface modeling, Carbon assimilation, Ecohydrology, Hydrometeorology, Land use and land cover change

Current Projects/Collaborations:-

• Establishing a Global soil moisture Earth system data record
• Large scale Biosphere-Atmosphere Model Intercomparison Project (LBA-MIP)
• North American Carbon Project
• Bistatic GPS reflections for soil moisture estimation

Academic Background:-

• 2008: Doctor of Philosophy in Computational Sciences (George Mason University, USA)

• 2006: Master of Science in Computational Sc. (George Mason University, USA)

• 2001: Master of Technology in Civil Engg. (I.I.T. Kanpur, India)

• 1999: Master of Science in Earth Sciences (I.I.T. Roorkee, India)

• 1997: Bachelor of Science in Geology Major (Khallikote College, India)

Professional Experience:-

• Present:         Research Associate (Center for Research on Environment and Water, USA)

• 2006:            Research visit to Princeton University

• 2005:           Graduate Student Summer Program Intern (NASA Goddard Space Flight Center, USA)

• 2004:           Graduate Student Summer Program Intern (NASA Goddard Space Flight Center, USA)

• 2002-2008:  Research Assistant (George Mason University, USA)

• 2001-2002:  Site Manager for Aeronet Site (I.I.T. Kanpur, India)

• 2001-2002:  Senior Project Associate (I.I.T. Kanpur, India)

Ph. D. Dissertation:

• Improvement of soil moisture prediction through AMSR-E data assimilation

M. Tech. Thesis:

• Inter-annual variability of snow over the Himalayas using the SSM/I data

M. Sc. Thesis:

• Evaluation of remedial measures of some hill slopes based on Failure mechanism pertaining to Tehri dam reservoir

Publications:-

In Journals:

• Sun, D.; Kafatos, M.; Leptoukh, G. and Sahoo, A. K. (2008), Multi-sensor studies of the impacts of African dust aerosols on Atlantic hurricane activities, J. Applied Meteorology and Climatology, (submitted).
• Sahoo, A. K.; Dirmeyer, P. A.; Houser, P. R. and Kafatos, M. (2008), A study of Land surface processes using land surface models over the Little River Experimental Watershed, Georgia, J. Geophysical Research-Atmosphere, (in review).
• Sahoo, A. K.; Houser, P. R.; Ferguson, C.; Wood, E. F., Dirmeyer, P. A. and Kafatos, M. (2008), Evaluation of AMSR-E soil moisture results using the in-situ data over the Little River Experimental Watershed, Georgia, Remote Sensing of Environment, (in press).
• Feng, X.; Sahoo, A. K.; Arsenault, K.; Houser, P. R.; Luo, Y. and Troy, T. J. (2008), The impact of snow model complexity at three CLPX sites, J. Hydrometeorology, (in press).
• Singh, R. P.; Cervone, G.; Kafatos, M.; Prasad, A. K.; Sahoo, A. K.; Sun, D.; Tang, D. L. and Yang, R. (2007), Multi-sensor studies of the Sumatra earthquake and tsunami of 26 December 2004, International. J. of Remote Sensing, v. 28, no. 13-14, p. 2885-2896.
• Sahoo, A. K.; Sarkar, S.; Singh, R. P.; Kafatos, M. and Summers, M. (2005), Declining trend of Total Ozone Column over the northern parts of India, International. J. of Remote Sensing, v. 26, no. 16, p. 3433-3440.
• Singh, R. P.; Mishra, D.R.; Sahoo, A.K. and Dey, S. (2005), Spatial and temporal variability of soil moisture over India using IRS P4 MSMR data, International J. of Remote Sensing,  v. 26, no. 10, p. 2241-2247.
• Singh, R. P.; Dey, S.; Sahoo, A. K. and Kafatos, M. (2004), Retrieval of water vapour using SSM/I and its relation with onset of monsoon, Annales Geophysicae, v. 22, p. 3079-3083.
• Mishra, D.R.; Sahoo, A.K.; Kanwar, R. and Singh, R.P. (2002), Estimation of monthly rain rate over Indian Ocean region Using MSMR data, Current Science, v. 83, no. 7, p. 877-880.
• Singh, R. P.; Bhoi, S. and Sahoo, A. K. (2002), Changes observed on land and ocean after Gujarat earthquake of January 26, 2001 using IRS data, International J. Remote Sensing, v. 23, no. 16, p. 3123-3128.
• Kundu, S. N.; Sahoo, A. K.; Mohapatra, S. and Singh, R. P. (2001), Change analysis using IRS-P4 OCM Data after the Orissa super-cyclone, International J. Remote Sensing, v. 22, no. 7, p. 1383-1389.
• Singh, R. P.; Bhoi, S.; Sahoo, A. K.; Raj, U. and Ravindran, S. (2001), Surface manifestations after the Gujarat earthquake, Current Science, v. 81, no. 2, p. 164-166.
• Singh, R. P.; Bhoi, S. and Sahoo, A. K. (2001), Significant changes in the ocean parameters after the Gujarat earthquake, Current Science, v. 80, no. 11, p. 1376-1377.
• Singh, R. P.; Sahoo, A. K.; Bhoi, S.; Kumar, G. M. and Bhuiyan, C. S. (2001), Ground deformations observed after Gujarat earthquake of January 26, 2001, J. of Geological Society of India, v. 58, pp. 209-214.
• Singh, R. P.; Bhoi S.; Chandresh; Sahoo, A. K. and Kanwar, R. (2001), Changes in ocean after the Gujarat earthquake, GIS @ Development, v. 5, No. 3, p. 35-36.

Conference Papers/Presentations:

• Sahoo, A K.; Zhan, X.; Arsenault, K. R. and Kafatos, M. (2006), Cross-validation of soil moisture data from AMSR-E using field observations and NASA'sLand Data Assimilation system simulations, AMS 86^th Annual Meeting (Atlanta, USA).
• Sahoo, A. K.; Singh R. P. and Kafatos M. (2004), Inter-annual variability of water vapor and its  relation with the onset of monsoon, AGU-CGU 2004 Joint Assembly (Montreal, Canada).
• Singh, R.P., Bhoi, S., Dey, S., Harijan, N., Sahoo A.K. and Kanwar, R. (2002), Anomalous changes in ocean parameters after Gujarat earthquake of January 26, 2001, Proceedings  Symposium International "En route to GODAE" 13-15 June 2002, Biarritz, France, p. 369 - 370.
• Mishra D. R., Kanwar, R.; Sahoo, A. K. and Singh R. P. (2002), Effect of wind speed on rain rate over ocean using MSMR and QUICKSCAT data, XII National Space Science Symposium (NSSS – 2002) (Bhopal, India).
• Sahoo, A. K. and Singh R. P. (2001), Water Vapor over Indian Sub-continent and its role in monsoon forecast, MAUSAM (WMO International Workshop Proceedings, New Delhi, India).
• Sahoo, A. K.; Mishra, V. D.; Mathur P. and Singh R. P. (2001), Inter-relationship between the snow parameters of the Himalayan region and sea surface temperature of the Indian Ocean, National Snow Science Workshop (SASE, Chandigarh, India).
• Sahoo, A. K.; Mishra D. R.; Dey S.; Shukla A. K. and Singh R. P. (2001), Emissivity derived from MSMR data as a precursor for future Gujarat earthquakes, ISRS Symposium proceeding (SAC, Ahmedabad, India).
• Bhoi, S.; Sahoo, A. K. and Singh R. P. (2001), Mapping of fault parameters of Gujarat earthquake using remote sensing and GIS, ISRS Symposium proceeding (SAC, Ahmedabad, India).
• Mishra D. R., Dey S.; Kanwar, R.; Sahoo, A. K. and Singh R. P. (2001), Variability of rain rate over ocean using MSMR data, ISRS Symposium proceeding (SAC, Ahmedabad, India).
• Singh, R. P.; Mishra, N. C.; Sarkar, S.; Reddy K. V. R. and Sahoo, A. K. (2000), Inter-annual variability of surface and meteorological parameters over the Arabian Sea, PORSEC Proceedings (Goa, India), v. 1, p. 486-489.

Recognitions/Awards:-

• Phi Beta Delta, Student Treasurer, 2005-2008
• SSPI (Society of Satellite Professionals International) Mid-Atlantic Chapter Scholarship, 2004
• ISRS Optomec award for best paper in ISRS symposium, 2000 held at IIT Kanpur
• ISRS award for best poster presentation in ISRS symposium, 2001 held at SAC, Ahmedabad
• Graduate Aptitude Test for Engineering (GATE - 1999), All India Ranking - 13
• Junior and Senior National Merit Scholarship, Ministry of Human Resource Development, India

Professional Memberships:-

• American Geophysical Union
• American Meteorological Society
• The Institute of Electrical and Electronics Engineers
• Society of Satellite Professionals International

Last Updated: 14 May 2008