Temporally smoothed and gap-filled MODIS land products for carbon modelling: application of the fPAR product

被引:17
|
作者
Nightingale, J. M. [1 ]
Morisette, J. T. [1 ]
Wolfe, R. E. [1 ]
Tan, B. [2 ]
Gao, F. [2 ]
Ederer, G. [3 ]
Collatz, G. J. [4 ]
Turner, D. P. [5 ]
机构
[1] NASA, Goddard Space Flight Ctr, Terr Informat Syst Branch, Greenbelt, MD 20771 USA
[2] Earth Resources Technol Inc, Annapolis Jct, MD 20701 USA
[3] SAIC, Seabrook, MD 20706 USA
[4] NASA, Goddard Space Flight Ctr, Biospher Sci Branch, Greenbelt, MD 20771 USA
[5] Oregon State Univ, Coll Forestry, Corvallis, OR 97330 USA
关键词
TERRESTRIAL; PHENOLOGY; SATELLITE;
D O I
10.1080/01431160802398064
中图分类号
TP7 [遥感技术];
学科分类号
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要
TIMESAT software is used to produce a temporally and spatially Gap-Filled and Smoothed (GFS) version of the MODIS (Moderate Resolution Imaging Spectroradiometer) fPAR (fraction of absorbed photosynthetically active radiation) product (MOD15). We apply this new ePAR product within two commonly used carbon and vegetation productivity models, CASA (Carnegie-Ames-Stanford Approach) and the MODIS GPP (Gross Primary Production) algorithm (MOD17). The GFS product removes noise present within the original MOD15 fPAR dataset, yet is comparable to the linearly interpolated UMT (University of Montana) fPAR used in the MOD17 algorithm. However, the GSF data provides a realistic fPAR time-series in relation to magnitude and seasonality associated with radiation in regions where persistent cloud cover is an issue. It is available for North America and the northern part of South America covering the Amazon basin for the MODIS acquisition period (2000-2005).
引用
收藏
页码:1083 / 1090
页数:8
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