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University of Helsinki Department of Geography
 
Department of Geography

 

Welcome
About

Alemu Gonsamo Gosa, PhD
Geoinformatics

Project Researcher

Geoinformatics Group
Department of Geography
P. O. Box 64 (Gustaf Hällströmin katu 2)
FIN-00014 University of Helsinki
Finland

Tel: +358-(0)9-191-50770

Mobile: +358452626680

Fax: +358-(0)9-19150760
E-mail: alemu.gonsamo@helsinki.fi

 

Research interests

 

  • Remote Sensing of Bio-/geophysical and ecological Parameters
  • Remote sensing
  • Imaging Spectroscopy
  • Geographical Information Systems
  • Micrometeorology
  • Forestry

 

Education

 

  • PhD, 2009. Geoinformatics, Department of Geography, University of Helsinki, Finland
  • M. Sc., 2006. Geographical Information Science, Wageningen University and Research Centre, The Netherlands
  • B. Sc., 2002. Forestry, Wondo Genet College of Forestry, Debub University, Ethiopia
  • High school graduation, 1998. Awassa Tabor Comprehensive High School, Awassa, Ethiopia

 

Work Experience

 

 

 

Publications

TO BE SUBMITTED

13. Gonsamo, A.. In situ determination of 2D fractional metrics of canopy element cover and radiation regime in forest canopies.

PEER REVIEWED PUBLICATIONS

12. Gonsamo, A., J.-M.N., Walter and P.Pellikka (submitted). CIMES: A Package of Programs for the Assessment of Canopy Geometry and Solar Radiation Regimes through Hemispherical Photographs Part I: general overview and solar radiation assessment. Sensors.

11. Gonsamo, A., J.-M.N., Walter and P.Pellikka (submitted). CIMES: A Package of Programs for the Assessment of Canopy Geometry and Solar Radiation Regimes through Hemispherical Photographs Part II: canopy geometry assessment. Sensors.

10. Gonsamo, A.(submitted). On the performance analysis of three-band spectral vegetation indices to leaf area index: simulation analysis with PROSAIL model. Remote Sensing Letters.

9. Gonsamo, A., and P.Pellikka(accepted). The sensitivity of spectral vegetation indices to Leaf Area Index. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing.

8. Gonsamo, A., J.-M.N., Walter and P.Pellikka (2010). Sampling gap fraction and size for estimating leaf area and clumping indices using hemispherical photography. Canadian Journal of Forest Research, in press.

7. Gonsamo, A., Pellikka, P., and King, D.J. (2010). Large scale leaf area index inversion algorithms from high resolution airborne imagery. International journal of remote sensing, in press.

6. Gonsamo, A. (2010). Leaf area index retrieval using gap fractions obtained from high resolution satellite data: comparisons of approaches, scales and atmospheric effects. International Journal of Applied Earth Observation and Geoinformation, in press.

5. Gonsamo, A., and P.Pellikka (2009). A simplified procedure for a large scale LAI inversion from high resolution satellite data. IGARSS 3, III-557 - III-560.

4. Lehouck, V., Spanhove, T., Gonsamo, A., Cordeiro, N., and Lens, L. (2009). Spatial and temporal effects on recruitment of an Afromontane forest tree in a threatened fragmented ecosystem. Biological conservation 142, 518-528.

3. Gonsamo, A., and P.Pellikka (2009). The computation of foliage clumping index using hemispherical photography. Agriculture and forest meteorology, 149, 1781-1787.

2. Gonsamo, A.,and P.Pellikka (2009). A new look at the top-of-canopy gap fraction measurements from high resolution airborne imagery. EARSeL eProceedings, 8, 64-74.

1. Gonsamo, A., and P.Pellikka (2008). Methodology comparison for slope correction in canopy leaf area index estimation using hemispherical photography. Forest Ecology and Management 256,749-759. PDF

OTHER SCIENTIFIC PUBLICATIONS

10. Gonsamo Gosa, A., (2009). Remote sensing of leaf area index: enhanced retrieval from close-range and remotely sensed optical observations. PhD dissertation: Geoinformatics, Department of Geography, University of Helsinki, Finland. Helsingin yliopiston maantieteen laitoksen julkaisuja A 147. Synopsis PDF

9. Gonsamo, A., (2009). The robustness of large scale gap fraction estimations from high resolution satellite data (invited talk). Canada Centre for Remote Sensing (CCRS), Ottawa, Canada, May 25, 2009.

8. Gonsamo, A., and Pellikka, P. (2009). Remote sensing based inversion of gap fraction for determination of leaf area index (LAI).In: IUFRO Division 4 meeting: Extending Forest Inventory and Monitoring over Space and Time. Quebec City, Canada, 19-22 May 2009.

7. Gonsamo, A., and Pellikka, P. (2009). A new look at top-of-canopy gap fraction measurements using high resolution airborne imagery. In: 6th EARSeL SIG IS workshop "IMAGING SPECTROSCOPY: Innovative tool for scientific and commercial environmental applications" Tel-Aviv, Israel, 16-19 March 2009

6. Gonsamo, A., (2008). Window programming script for automation of CIMES-FISHEYE Package of Programs for the Assessment of Canopy Geometry and Solar Radiation Regimes through Hemispherical Photographs. © Jean-Michel N. Walter 1982–2008: http://equinoxe.u-strasbg.fr/cimes.

5. Gonsamo, A., and Pellikka, P. (2008). Defining leaf area index for climate studies (Abstract). In: Interactions Between Land Use and Climate: Multidisciplinary Perspectives from Local Land Use to Global Climate. HENVI Science Day, 24, April, 2008, Helsinki, Finland. Link. PDF

4. Eronen, J., Puolamäki, K., Lintulaakso, K., Micheels, A., Gonsamo, A., Fortelius, M., and Mosbrugger, V. (2008). Leaf area index and precipitation estimates from present and past communities of large herbivorous mammals (Abstract). In: HPF-15 Mining the fossil record through geoinformatics, the 33th International Geological Congress, 6-14, 2008, Oslo, Norway. Link

3. Gonsamo, A., (2007). Remote sensing of biophysical parameters (invited talk). Department of Geology, University of Helsinki, Helsinki, Finland.

2. Gonsamo, A., G. Schaepman-Strub, L. Kooistra, M. Schaepman and P.Pellikka (2007). Estimation of leaf area index using optical field instruments and imaging spectroscopy. In: Proceedings of the 5th EARSeL workshop on IMAGING SPECTROSCOPY, 23-25 April 2007, Bruges, Belgium. PDF

1. Gonsamo, A.(2006). Estimation of leaf area index using optical field instruments and imaging spectroscopy. MSc thesis: Center for Geo-Information, Wageningen UR, the Netherlands, GIRS-2006-09. PDF

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