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Article: Satellite footprint data from OCO-2 and TROPOMI reveal significant spatio-temporal and inter-vegetation type variabilities of solar-induced fluorescence yield in the U.S. Midwest
Title | Satellite footprint data from OCO-2 and TROPOMI reveal significant spatio-temporal and inter-vegetation type variabilities of solar-induced fluorescence yield in the U.S. Midwest |
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Authors | |
Keywords | Solar-induced chlorophyll fluorescence OCO-2 TROPOMI Fluorescence yield Croplands |
Issue Date | 2020 |
Publisher | Elsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/rse |
Citation | Remote Sensing of Environment, 2020, v. 241, article no. 111728 How to Cite? |
Abstract | Solar-induced chlorophyll fluorescence (SIF) measured from space has been increasingly used to quantify plant photosynthesis at regional and global scales. Apparent canopy SIF yield (SIFyield apparent), determined by fluorescence yield (ΦF) and escaping ratio (fesc), together with absorbed photosynthetically active radiation (APAR), is crucial in driving spatio-temporal variability of SIF. While strong linkages between SIFyield apparent and plant physiological responses and canopy structure have been suggested, spatio-temporal variability of SIFyield apparent at regional scale remains largely unclear, which limits our understanding of the spatio-temporal variability of SIF and its relationship with photosynthesis. In this study, we utilized recent SIF data with high spatial resolution from two satellite instruments, OCO-2 and TROPOMI, together with multiple other datasets. We estimated SIFyield apparent across space, time, and different vegetation types in the U.S. Midwest during crop growing season (May to September) from 2015 to 2018. We found that SIFyield apparent of croplands was larger than non-croplands during peak season (July–August). However, SIFyield apparent between corn (C4 crop) and soybean (C3 crop) did not show a significant difference. SIFyield apparent of corn, soybean, forest, and grass/pasture show clear seasonal and spatial patterns. The spatial variability of precipitation during the growing season could explain the overall spatial pattern of SIFyield apparent. Further analysis by decomposing SIFyield apparent into ΦF and fesc using near-infrared reflectance of vegetation (NIRV) suggests that fesc may be the major driver of the observed variability of SIFyield apparent. |
Persistent Identifier | http://hdl.handle.net/10722/283330 |
ISSN | 2023 Impact Factor: 11.1 2023 SCImago Journal Rankings: 4.310 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wang, C | - |
dc.contributor.author | Guan, K | - |
dc.contributor.author | Peng, B | - |
dc.contributor.author | Chen, M | - |
dc.contributor.author | Jiang, C | - |
dc.contributor.author | Zeng, Y | - |
dc.contributor.author | Wu, G | - |
dc.contributor.author | Wang, S | - |
dc.contributor.author | Wu, J | - |
dc.contributor.author | Yang, X | - |
dc.contributor.author | Frankenberg, C | - |
dc.contributor.author | Köhler, P | - |
dc.contributor.author | Berry, J | - |
dc.contributor.author | Bernacchi, C | - |
dc.contributor.author | Zhu, K | - |
dc.contributor.author | Alden, C | - |
dc.contributor.author | Miao, G | - |
dc.date.accessioned | 2020-06-22T02:55:06Z | - |
dc.date.available | 2020-06-22T02:55:06Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Remote Sensing of Environment, 2020, v. 241, article no. 111728 | - |
dc.identifier.issn | 0034-4257 | - |
dc.identifier.uri | http://hdl.handle.net/10722/283330 | - |
dc.description.abstract | Solar-induced chlorophyll fluorescence (SIF) measured from space has been increasingly used to quantify plant photosynthesis at regional and global scales. Apparent canopy SIF yield (SIFyield apparent), determined by fluorescence yield (ΦF) and escaping ratio (fesc), together with absorbed photosynthetically active radiation (APAR), is crucial in driving spatio-temporal variability of SIF. While strong linkages between SIFyield apparent and plant physiological responses and canopy structure have been suggested, spatio-temporal variability of SIFyield apparent at regional scale remains largely unclear, which limits our understanding of the spatio-temporal variability of SIF and its relationship with photosynthesis. In this study, we utilized recent SIF data with high spatial resolution from two satellite instruments, OCO-2 and TROPOMI, together with multiple other datasets. We estimated SIFyield apparent across space, time, and different vegetation types in the U.S. Midwest during crop growing season (May to September) from 2015 to 2018. We found that SIFyield apparent of croplands was larger than non-croplands during peak season (July–August). However, SIFyield apparent between corn (C4 crop) and soybean (C3 crop) did not show a significant difference. SIFyield apparent of corn, soybean, forest, and grass/pasture show clear seasonal and spatial patterns. The spatial variability of precipitation during the growing season could explain the overall spatial pattern of SIFyield apparent. Further analysis by decomposing SIFyield apparent into ΦF and fesc using near-infrared reflectance of vegetation (NIRV) suggests that fesc may be the major driver of the observed variability of SIFyield apparent. | - |
dc.language | eng | - |
dc.publisher | Elsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/rse | - |
dc.relation.ispartof | Remote Sensing of Environment | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License | - |
dc.subject | Solar-induced chlorophyll fluorescence | - |
dc.subject | OCO-2 | - |
dc.subject | TROPOMI | - |
dc.subject | Fluorescence yield | - |
dc.subject | Croplands | - |
dc.title | Satellite footprint data from OCO-2 and TROPOMI reveal significant spatio-temporal and inter-vegetation type variabilities of solar-induced fluorescence yield in the U.S. Midwest | - |
dc.type | Article | - |
dc.identifier.email | Wu, J: jinwu@hku.hk | - |
dc.identifier.authority | Wu, J=rp02509 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1016/j.rse.2020.111728 | - |
dc.identifier.scopus | eid_2-s2.0-85081177761 | - |
dc.identifier.hkuros | 310544 | - |
dc.identifier.volume | 241 | - |
dc.identifier.spage | article no. 111728 | - |
dc.identifier.epage | article no. 111728 | - |
dc.identifier.isi | WOS:000523958600018 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0034-4257 | - |