Dr. Jan Friesen


Kontakt/Adresse
Dr. Jan Friesen

Wissenschaftler



Coordination and Integration of Water Sciences
Helmholtz-Zentrum
für Umweltforschung - UFZ
Permoserstr. 15
04318 Leipzig, Germany

Tel: 0341 235 1082
Fax: 0341 235 45 1082
Jan Friesen

Gebäude 7.1 -> Raum 412


jan

Wissenschaftlicher Werdegang

seit Feb 2012

TERENO-MED, Feldkoordination

2009 - 2012

Wissenschaftlicher Mitarbeiter im Department Hydrosystemmodellierung (CHS), UFZ

2004 - 2008

Dissertation in Hydrologie an der Delft University of Technology, Niederlande, Titel der Arbeit: "Der regionale Einfluss von Vegetationswasser auf die satellitengestützte Bestimmung von Bodenfeuchte in Westafrika"

2002 - 2004

Wissenschaftliche Hilfskraft am Zentrum für Entwicklungsforschung (ZEF), Department of Ecology and Resource Management, Universität Bonn, Deutschland

2002

 

Forschungsschwerpunkte

Kooperationen / Projekte

Publikationen

Mallast, U., Siebert, C., Gloaguen, R., Friesen, J., Rödiger, T., Geyer, S., and Merz, R. (2013): How to identify groundwater-caused thermal anomalies in lakes based on multi-temporal satellite data in semi-arid regions, Hydrol. Earth Syst. Sci. Discuss., 10, 4901-4949, doi:10.5194/hessd-10-4901-2013.

J. Van Stan, K. Martin, J. Friesen, M. Jarvis, J. Lundquist, and D. Levia (accepted): Evaluation of an instrumental method to reduce error in canopy water storage estimates via mechanical displacement. Water Resources Research.

Susan Steele-Dunne, J. Friesen, and N. van de Giesen (2012): Using Diurnal Variation in Backscatter to Detect Vegetation Water Stress. IEEE Trans. on Geosci. Remote Sens. Vol. 50, no. 7pp. 2618-2629, Jul. 2012.

J. Friesen, Susan Steele-Dunne, and N. van de Giesen (2012): Diurnal differences in global ERS scatterometer backscatter observations of the land surface. IEEE Trans. on Geosci. Remote Sens. Vol. 50, no. 7pp. 2595-2602, Jul. 2012.

W. Buytaert, J. Friesen, J. Liebe, and R. Ludwig (2012): Assessment and Management of Water Resources in Developing, Semi-arid and Arid Regions. Water Resources Management. Volume 26, Number 4, 841-844, DOI: 10.1007/s11269-012-9994-3

P. G. Oguntunde, A. E. Ajayi, J. Friesen, N. van de Giesen, and P. L. G. Vlek (2011): Seasonal Variation of Temporal Patterns of Water Flux in a Cashew Orchard under Sub-humid Tropical Conditions. Journal of Crop Improvement, 25(5). pp. 504-520, doi: 10.1080/15427528.2011.591482.

J. Van Stan, M. Jarvis, D. Levia, and J. Friesen (2011): Instrumental method for reducing error in compression-derived measurements of rainfall interception for individual trees. Hydrological Sciences Journal/Journal des Sciences Hydrologiques, 56(6). pp. 1061-1066, doi: 10.1080/02626667.2011.590811.

R. de Jeu, W. Wagner, T. Holmes,H. Dolman, N. van de Giesen, and J. Friesen (2008): Global Soil Moisture Patterns Observed by Space Borne Microwave Radiometers and Scatterometers. Surveys in Geophysics, 29(4), pp. 399-420, doi:10.1007/s10712-008-9044-0.

J. Friesen, C. van Beek, J. Selker, H.H.G. Savenije, and N. van de Giesen: Tree Rainfall Interception Measured by Stem Compression. Water Resources Research, 44, W00D15, doi:10.1029/2008WR007074.

R. De Lange, R. Beck, N. Van de Giesen, J. Friesen, A. de Wit, and W. Wagner (2008):Scatterometer derived soil moisture calibrated for soil texture with a one-dimensional water flow model. IEEE Transactions on Geoscience and Remote Sensing, 46(12), 4041-4049.

J. Friesen, C. Rodgers, P.G. Oguntunde, J.M.H. Hendrickx, and N. van de Giesen (2008): Hydrotope-based protocol to determine average soil moisture over large areas for satellite calibration and validation - With results from an observation campaign in the Volta Basin, West Africa. IEEE Transactions on Geoscience and Remote Sensing, 46(7), 1995-2004.

J. Friesen, H. C. Winsemius, R. Beck, K. Scipal, W. Wagner, and N. van de Giesen (2007): Spatial and seasonal patterns of diurnal differences in ERS Scatterometer soil moisture data in the Volta Basin, West Africa. IAHS Red Book Series 316. IAHS Press, Oxfordshire, UK, pp. 47-55.

Compaoré, H., Hendrickx, J.M.H., Hong, S-h., Friesen, J., van de Giesen, N.C., Rodgers, C., Szarzynski, J., and Vlek, P.L.G. (2007): Evaporation mapping at two scales in the White Volta Basin, Upper East Ghana, using optical imagery. Physics and Chemistry of the Earth, doi: 10.1016/j.pce.2007.04.021

Amisigo, B.A., van de Giesen, N., Rogers, C., Andah, W.E.I., and Friesen, J. (2007): Monthly Streamflow Prediction in the Volta Basin of West Africa: A SISO NARMAX Polynomial Modelling. Physics and Chemistry of the Earth, doi: 10.1016/j.pce.2007.04.019

M. Hafeez, M. Andreini, J. Liebe, J. Friesen, A. Marx, and N. van de Giesen (2007): Hydrological parameterization through remote sensing in Volta Basin,West Africa. International Journal of River Basin Management, 5(1): 49-56

Hendrickx J.M. , Sung-ho Hong, J. Friesen, H. Compaore, N. C. van de Giesen, C. Rodgers, and P. L. Vlek (2006): Mapping energy balance fluxes and root zone soil moisture in the White Volta Basin using optical imagery. Proc. SPIE Vol. 6239, pp. 62390Q.1-62390Q.12.

Oguntunde P.G., J. Friesen, van de Giesen N., and Savenije H.H.H. (2006). Hydroclimatology of the Volta River Basin in West Africa: Trends and Variability from 1901-2002. Physics and Chemistry of the Earth, 31 (18), pp. 1180-1188.

Hendrickx J.M., J. Bruce J. Harrison, R. L. van Dam, B. Borchers, D. I. Norman, C. D. Dedzoe, B. O. Antwi, R. D. Asiamah, C. Rodgers, P. Vlek, and J. Friesen (2005): Magnetic soil properties in Ghana. Proc. SPIE Vol. 5794, pp. 165-176.

Friesen, J., Andreini M., Andah W., Amisigo B., and van de Giesen, N. (2005): Storage capacity and long-term water balance of the Volta Basin, West Africa. IAHS Red Book Series 296. IAHS Press, Oxfordshire, UK, pp. 138-145.

Friesen, J. (2002): Spatio-temporal Patterns of Rainfall in Northern Ghana. Diploma thesis, Faculty of Mathematics and Natural Sciences, Department of Geography, University of Bonn, Germany

Kontakt

Sprecher

Prof. Dr. Dietrich Borchardt
UFZ, Department Aquatische Ökosystemanalyse
dietrich.borchardt@ufz.de


Managerin

Dr. Ilona Bärlund
UFZ, Department Aquatische Ökosystemanalyse
ilona.baerlund@ufz.de


Programmorientierte Forschung (POF)

Nomenklatur

Topic 3:
Nachhaltiges Management von Wasserresourcen

  • Integriertes Projekt T31:
    Stoffdynamik in Einzugsgebieten
  • Integriertes Projekt T32:
    Aquatische Ökosysteme
  • Integriertes Projekt T33:
    Grundwasserökologie
  • Integriertes Projekt T34:
    Wasserknappheit

Kooperationen und Netzwerke