Skip all navigation and jump to content Jump to site navigation
NASA Logo - Goddard Space Flight Center

+ NASA Homepage

    
Goddard Space Flight Center
About MODIS News Data Tools /images2 Science Team Science Team Science Team

   + Home
ABOUT MODIS
MODIS Publications Link
MODIS Presentations Link
MODIS Biographies Link
MODIS Science Team Meetings Link
 

 

 

Steinberg, DC, Goetz, S (2009). Assessment and extension of the MODIS FPAR products in temperate forests of the eastern United States. INTERNATIONAL JOURNAL OF REMOTE SENSING, 30(1), 169-187.

Abstract
Spatial and temporal variability in the quality of the collection 4 and 5 MODIS FPAR products were examined over a 1.1 million km2 region dominated by temperate forests. The MODIS FPAR products were parsed into different quality levels based on the retrieval method of the FPAR estimates, and the spatial coverage of the different quality MODIS subsets was examined through time and by land cover. The spatial extent of good quality FPAR estimates, derived from the main radiative transfer algorithm without saturation, was found to be quite limited, particularly during the growing season. The majority of the MODIS C4 FPAR retrievals were derived from the back-up, empirically based algorithm. The C5 products available to date showed greater data quality but still had limitations in forested areas. As an alternative to using the lower-quality MODIS FPAR data, we explored the utility of estimating FPAR from the more spatially extensive (and higher resolution) MODIS NDVI product using a simple, regionally based linear regression. A strong linear relationship between high quality MODIS NDVI and FPAR products within our study site was found, indicating its utility for estimating FPAR at regional scales where good quality retrievals from the MODIS algorithm are not available and where higher resolution FPAR maps are desired. We discuss these results and their significance for down-stream MODIS users.

DOI:
10.1080/01431160802244276

ISSN:
0143-1161

FirstGov logo Privacy Policy and Important Notices NASA logo

Curator: Brandon Maccherone
NASA Official: Shannell Frazier

NASA Home Page Goddard Space Flight Center Home Page