Validation of collection of 6 MODIS/Terra and MODIS/Aqua gross primary production in an alpine meadow of the Northern Tibetan Plateau
Fu, G; Zhang, J; Shen, ZX; Shi, PL; He, YT; Zhang, XZ
2017
Source PublicationINTERNATIONAL JOURNAL OF REMOTE SENSING
ISSN0143-1161
Volume38Issue:16Pages:4517-4534
AbstractModerate Resolution Imaging Spectroradiometer (MODIS) continuously monitors gross primary production (GPP), which is an extremely important component of carbon cycling, at the global scale. Uncertainties about MODIS GPP limit our ability to accurately quantify GPP at the regional scales. The Collection 6 MODIS/Terra and MODIS/Aqua GPP products (i.e. MOD17A2H and MYD17A2H) were compared with the estimated GPP (GPPEC) by eddy covariance measurements in an alpine meadow in the Northern Tibetan Plateau during three consecutive growing seasons of 2005-2007. The Collection 6 MODIS/Terra and MODIS/Aqua fractional photosynthetically active radiation (FPAR) products (i.e. MOD15A2H and MYD15A2H) were also validated. The MOD17A2H and MYD17A2H products tended to overestimate GPPEC by 2.17% and 7.35% in 2005-2007, respectively, although these differences were not significant. The MOD15A2H and MYD15A2H products also tended to overestimate ground-based FPAR (FPAR(G)) by 20.31% and 24.73% in 2005-2007, respectively. The overestimation of FPAR resulted in about 17.51-23.97% overestimation of GPPEC. The default maximum light-use efficiency (emax) of 0.86 g C MJ(-1) only underestimated the ground-based emax (0.88 g C MJ(-1)) by 2.27%, which in turn resulted in about 2.13-2.72% underestimation of GPPEC. The meteorology data errors only caused about 0.48-1.06% underestimation of GPPEC. Therefore, although MODIS Collection 6 GPP had a very high accuracy, the input parameters had relative greater errors in the alpine meadow of the Northern Tibetan Plateau. The differences between MODIS GPP and GPPEC mainly resulted from FPAR, followed by emax and meteorological data.
SubtypeJournal
Subject AreaRemote Sensing ; Imaging Science & Photographic Technology
WOS Subject ExtendedRemote Sensing ; Imaging Science & Photographic Technology
WOS KeywordNET PRIMARY PRODUCTIVITY ; ECOSYSTEM CO2 EXCHANGE ; PRIMARY PRODUCTION GPP ; USE EFFICIENCY ; TERRESTRIAL GROSS ; ABSORBED PAR ; RESPIRATION ; TEMPERATURE ; CALIBRATION ; ABSORPTION
Indexed BySCI
Language英语
WOS IDWOS:000401976600001
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44122
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Fu, G,Zhang, J,Shen, ZX,et al. Validation of collection of 6 MODIS/Terra and MODIS/Aqua gross primary production in an alpine meadow of the Northern Tibetan Plateau[J]. INTERNATIONAL JOURNAL OF REMOTE SENSING,2017,38(16):4517-4534.
APA Fu, G,Zhang, J,Shen, ZX,Shi, PL,He, YT,&Zhang, XZ.(2017).Validation of collection of 6 MODIS/Terra and MODIS/Aqua gross primary production in an alpine meadow of the Northern Tibetan Plateau.INTERNATIONAL JOURNAL OF REMOTE SENSING,38(16),4517-4534.
MLA Fu, G,et al."Validation of collection of 6 MODIS/Terra and MODIS/Aqua gross primary production in an alpine meadow of the Northern Tibetan Plateau".INTERNATIONAL JOURNAL OF REMOTE SENSING 38.16(2017):4517-4534.
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