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Satellite-based terrestrial production efficiency modeling |
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| Authors: | Ian McCallum Wolfgang Wagner Christiane Schmullius Anatoly Shvidenko Michael Obersteiner Steffen Fritz Sten Nilsson |
| Institution: | 1. International Institute for Applied Systems Analysis, Schlossplatz 1, A-2361, Laxenburg, Austria 2. Institute of Photogrammetry and Remote Sensing, Technical University, Gu?hausstra?e 27 - 29, 1040, Vienna, Austria 3. Institute of Geography, Friedrich-Schiller-University, Grietgasse 6, 07743, Jena, Germany |
| Abstract: | Production efficiency models (PEMs) are based on the theory of light use efficiency (LUE) which states that a relatively constant relationship exists between photosynthetic carbon uptake and radiation receipt at the canopy level. Challenges remain however in the application of the PEM methodology to global net primary productivity (NPP) monitoring. The objectives of this review are as follows: 1) to describe the general functioning of six PEMs (CASA; GLO-PEM; TURC; C-Fix; MOD17; and BEAMS) identified in the literature; 2) to review each model to determine potential improvements to the general PEM methodology; 3) to review the related literature on satellite-based gross primary productivity (GPP) and NPP modeling for additional possibilities for improvement; and 4) based on this review, propose items for coordinated research. |
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