Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073708 |
Angular normalization of GOME-2 Sun-induced chlorophyll fluorescence observation as a better proxy of vegetation productivity | |
He, Liming1; Chen, Jing M.1; Liu, Jane1; Mo, Gang1; Joiner, Joanna2 | |
2017-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | Sun-induced chlorophyll fluorescence (SIF) has been regarded as a promising proxy for gross primary productivity (GPP) over land. Considerable uncertainties in GPP estimation using remotely sensed SIF exist due to variations in the Sun-satellite view observation geometry that could induce unwanted variations in SIF observation. In this study, we normalize the far-red Global Ozone Monitoring Experiment-2 SIF observations on sunny days to hot spot direction (SIFh) to represent sunlit leaves and compute a weighted sum of SIF (SIFt) from sunlit and shaded leaves to represent the canopy. We found that SIFh is better correlated with sunlit GPP simulated by a process-based ecosystem model and SIFt is better correlated with the simulated total GPP than the original SIF observations. The coefficient of determination (R-2) are increased by 0.040.03, and 0.070.04 on a global average using SIFh and SIFt, respectively. The most significant increases of the R-2 (0.090.04 for SIFt and 0.050.03 for SIFh) appear in deciduous broadleaf forests. |
英文关键词 | GPP SIF GOME-2 chlorophyll fluorescence angle |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404382600050 |
WOS关键词 | GROSS PRIMARY PRODUCTION ; BIDIRECTIONAL REFLECTANCE MODEL ; FOLIAGE CLUMPING INDEX ; LIGHT USE EFFICIENCY ; SATELLITE MEASUREMENTS ; CANOPY PHOTOSYNTHESIS ; TERRESTRIAL GROSS ; MODIS ; RETRIEVAL ; SIMULATIONS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25714 |
专题 | 气候变化 |
作者单位 | 1.Univ Toronto, Dept Geog & Planning, Toronto, ON, Canada; 2.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA |
推荐引用方式 GB/T 7714 | He, Liming,Chen, Jing M.,Liu, Jane,et al. Angular normalization of GOME-2 Sun-induced chlorophyll fluorescence observation as a better proxy of vegetation productivity[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(11). |
APA | He, Liming,Chen, Jing M.,Liu, Jane,Mo, Gang,&Joiner, Joanna.(2017).Angular normalization of GOME-2 Sun-induced chlorophyll fluorescence observation as a better proxy of vegetation productivity.GEOPHYSICAL RESEARCH LETTERS,44(11). |
MLA | He, Liming,et al."Angular normalization of GOME-2 Sun-induced chlorophyll fluorescence observation as a better proxy of vegetation productivity".GEOPHYSICAL RESEARCH LETTERS 44.11(2017). |
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