Analysis of Spatial and Temporal Variability of the PAR/GHI Ratio and PAR Modeling Based on Two Satellite Estimates
The main objectives of this work are to address the analysis of the spatial and temporal variability of the ratio between photosynthetically active radiation (<i>PAR</i>) and global horizontal irradiance (<i>GHI</i>), as well as to develop <i>PAR</i> models. The a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/12/8/1262 |
| _version_ | 1797570514202394624 |
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| author | Francisco Ferrera-Cobos Jose M. Vindel Rita X. Valenzuela José A. González |
| author_facet | Francisco Ferrera-Cobos Jose M. Vindel Rita X. Valenzuela José A. González |
| author_sort | Francisco Ferrera-Cobos |
| collection | DOAJ |
| description | The main objectives of this work are to address the analysis of the spatial and temporal variability of the ratio between photosynthetically active radiation (<i>PAR</i>) and global horizontal irradiance (<i>GHI</i>), as well as to develop <i>PAR</i> models. The analysis was carried out using data from three stations located in mainland Spain covering three climates: oceanic, standard Mediterranean, and continental Mediterranean. The results of this analysis showed a clear dependence between the <i>PAR/GHI</i> ratio and the location; the oceanic climate showed higher values of <i>PAR/GHI</i> compared with Mediterranean climates. Further, the temporal variability of <i>PAR/GHI</i> was conditioned by the variability of clearness index, so it was also higher in oceanic than in Mediterranean climates. On the other hand, Climate Monitoring Satellite Facility (CM-SAF) and Moderate-Resolution Imaging Spectroradiometer (MODIS) data were used to estimate <i>PAR</i> as a function of <i>GHI</i> over the whole territory. The validation with ground measurements showed better performance of the MODIS-estimates-derived model for the oceanic climate (root-mean-square error (RMSE) around 5%), while the model obtained from CM-SAF fitted better for Mediterranean climates (RMSEs around 2%). |
| first_indexed | 2024-03-10T20:25:40Z |
| format | Article |
| id | doaj.art-ea46e220afce4ca8b5be1a5818450119 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T20:25:40Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-ea46e220afce4ca8b5be1a58184501192023-11-19T21:50:39ZengMDPI AGRemote Sensing2072-42922020-04-01128126210.3390/rs12081262Analysis of Spatial and Temporal Variability of the PAR/GHI Ratio and PAR Modeling Based on Two Satellite EstimatesFrancisco Ferrera-Cobos0Jose M. Vindel1Rita X. Valenzuela2José A. González3Renewable Energy Division–CIEMAT, 28040 Madrid, SpainRenewable Energy Division–CIEMAT, 28040 Madrid, SpainRenewable Energy Division–CIEMAT, 28040 Madrid, SpainCRETUS Institute, Department of Chemical Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, SpainThe main objectives of this work are to address the analysis of the spatial and temporal variability of the ratio between photosynthetically active radiation (<i>PAR</i>) and global horizontal irradiance (<i>GHI</i>), as well as to develop <i>PAR</i> models. The analysis was carried out using data from three stations located in mainland Spain covering three climates: oceanic, standard Mediterranean, and continental Mediterranean. The results of this analysis showed a clear dependence between the <i>PAR/GHI</i> ratio and the location; the oceanic climate showed higher values of <i>PAR/GHI</i> compared with Mediterranean climates. Further, the temporal variability of <i>PAR/GHI</i> was conditioned by the variability of clearness index, so it was also higher in oceanic than in Mediterranean climates. On the other hand, Climate Monitoring Satellite Facility (CM-SAF) and Moderate-Resolution Imaging Spectroradiometer (MODIS) data were used to estimate <i>PAR</i> as a function of <i>GHI</i> over the whole territory. The validation with ground measurements showed better performance of the MODIS-estimates-derived model for the oceanic climate (root-mean-square error (RMSE) around 5%), while the model obtained from CM-SAF fitted better for Mediterranean climates (RMSEs around 2%).https://www.mdpi.com/2072-4292/12/8/1262photosynthetically active radiationspatial and temporal variabilitysatellite-derived radiation dataClimate Monitoring Satellite Facility (CM-SAF)Moderate-Resolution Imaging Spectroradiometer (MODIS)photosynthetically active radiation modeling |
| spellingShingle | Francisco Ferrera-Cobos Jose M. Vindel Rita X. Valenzuela José A. González Analysis of Spatial and Temporal Variability of the PAR/GHI Ratio and PAR Modeling Based on Two Satellite Estimates Remote Sensing photosynthetically active radiation spatial and temporal variability satellite-derived radiation data Climate Monitoring Satellite Facility (CM-SAF) Moderate-Resolution Imaging Spectroradiometer (MODIS) photosynthetically active radiation modeling |
| title | Analysis of Spatial and Temporal Variability of the PAR/GHI Ratio and PAR Modeling Based on Two Satellite Estimates |
| title_full | Analysis of Spatial and Temporal Variability of the PAR/GHI Ratio and PAR Modeling Based on Two Satellite Estimates |
| title_fullStr | Analysis of Spatial and Temporal Variability of the PAR/GHI Ratio and PAR Modeling Based on Two Satellite Estimates |
| title_full_unstemmed | Analysis of Spatial and Temporal Variability of the PAR/GHI Ratio and PAR Modeling Based on Two Satellite Estimates |
| title_short | Analysis of Spatial and Temporal Variability of the PAR/GHI Ratio and PAR Modeling Based on Two Satellite Estimates |
| title_sort | analysis of spatial and temporal variability of the par ghi ratio and par modeling based on two satellite estimates |
| topic | photosynthetically active radiation spatial and temporal variability satellite-derived radiation data Climate Monitoring Satellite Facility (CM-SAF) Moderate-Resolution Imaging Spectroradiometer (MODIS) photosynthetically active radiation modeling |
| url | https://www.mdpi.com/2072-4292/12/8/1262 |
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