Algorithm Theoretical Basis Document Chlorophyll Fluorescence ( MODIS Product Number 20 )

The chlorophyll fluorescence product group (MODIS Product 20) includes several parameters. Two of these parameters will be described in the document: fluorescence line height (parameter 2575) and chlorophyll fluorescence efficiency (parameter 3211). We will discuss Version 3.0 of the algorithms associated with these two parameters. Chlorophyll fluorescence line curvature (parameter 2573) will be produced by Hoge and will be described in a separate ATBD. We have accelerated plans to develop a primary productivity research product that will utilize the fluorescence data. We emphasize that this is a research product only and will not be part of the DAAC standard product suite. However, in the interest of completeness, we include a preliminary overview of the theoretical basis of this product in the ATBD. It will eventually be produced in our Science Compute Facility (SCF) and be available to any interested user.

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