Publications in Scientific Journals:

I. McCallum, W. Wagner, C. Schmullius, A. Shvidenko, M. Obersteiner, S. Fritz, S. Nilsson:
"Comparison of four global FAPAR datasets over Northern Eurasia for the year 2000";
Remote Sensing of Environment, 114 (2010), 941 - 949.

English abstract:
The Fraction of Absorbed Photosynthetically Active Radiation (FAPAR) has been identified as one of several key
satellite-derived biophysical datasets. With multiple global FAPAR datasets now available and a lack of in-situ
measurements and comparison studies in the far north, this study attempts to provide the reader with an
indication of the performance of four global FAPAR datasets (MODIS, CYCLOPES, JRC and GLOBCARBON) over
Northern Eurasia in the year 2000 via comparison. Within the year 2000 growing season, both the MODIS and
CYCLOPES datasets recorded on average similar but substantially higher values than the JRC and GLOBCARBON
datasets.Among three of the four datasets, a high level of agreement in deciduous broadleaf forests and croplands
was observed. Largest disagreement occurred among needleleaf forests and grassland/shrubland. Potential
reasons for discrepanciesamong the datasets include different retrieval methods, use of LAI and land cover, snow
effects and others. Findings from this study and other published results suggest that overall, JRC best captures
FAPAR over northern Eurasia in the year 2000. However,when considering individual landcover types, any one or
more of the four productsmay be suitable. There exists a real need formore in-situmeasurements in this region-
the lack of such measurements makes evaluation extremely difficult. It appears that areas north of 60 urgently
require further investigation.

"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)

Created from the Publication Database of the Vienna University of Technology.