Revisiting the role of oceanic phase function in remote sensing reflectance
The effect of angular structure differences between measured and best-fit analytical phase functions of the equivalent backscattering ratio on calculated reflectance values was studied and shown to be significant. We used a Monte Carlo radiative transfer code to check the effect of choosing differen...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2012-01-01
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| Series: | Oceanologia |
| Subjects: | |
| Online Access: | http://www.iopan.gda.pl/oceanologia/54_1.html#A2 |
| _version_ | 1818834646123675648 |
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| author | Włodzimierz Freda Jacek Piskozub |
| author_facet | Włodzimierz Freda Jacek Piskozub |
| author_sort | Włodzimierz Freda |
| collection | DOAJ |
| description | The effect of angular structure differences between measured and best-fit analytical phase functions of the equivalent backscattering ratio on calculated reflectance values was studied and shown to be significant. We used a Monte Carlo radiative transfer code to check the effect of choosing different analytical (several Fournier-Forand (1994) and Henyey-Greenstein (1941)) phase functions with backscattering ratios identical to the "classical" average Petzold function. We show that the additional variability of the resulting water leaving radiance is about 7% (4% between the Fournier-Forand functions themselves) for most scenarios. We also show a~previously unknown maximum of the discrepancy (up to 10%) for highly scattering waters. We discuss the importance of relative differences in phase function for different angular ranges to this maximum and to the behaviour of the discrepancy as a function of solar zenith angle. |
| first_indexed | 2024-12-19T02:38:07Z |
| format | Article |
| id | doaj.art-aa105ec1c60a4eb3a9ded3bf6492ec9e |
| institution | Directory Open Access Journal |
| issn | 0078-3234 |
| language | English |
| last_indexed | 2024-12-19T02:38:07Z |
| publishDate | 2012-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Oceanologia |
| spelling | doaj.art-aa105ec1c60a4eb3a9ded3bf6492ec9e2022-12-21T20:39:17ZengElsevierOceanologia0078-32342012-01-015412938Revisiting the role of oceanic phase function in remote sensing reflectanceWłodzimierz FredaJacek PiskozubThe effect of angular structure differences between measured and best-fit analytical phase functions of the equivalent backscattering ratio on calculated reflectance values was studied and shown to be significant. We used a Monte Carlo radiative transfer code to check the effect of choosing different analytical (several Fournier-Forand (1994) and Henyey-Greenstein (1941)) phase functions with backscattering ratios identical to the "classical" average Petzold function. We show that the additional variability of the resulting water leaving radiance is about 7% (4% between the Fournier-Forand functions themselves) for most scenarios. We also show a~previously unknown maximum of the discrepancy (up to 10%) for highly scattering waters. We discuss the importance of relative differences in phase function for different angular ranges to this maximum and to the behaviour of the discrepancy as a function of solar zenith angle.http://www.iopan.gda.pl/oceanologia/54_1.html#A2Marine opticsPhase functionsRemote sensing reflectanceScattering |
| spellingShingle | Włodzimierz Freda Jacek Piskozub Revisiting the role of oceanic phase function in remote sensing reflectance Oceanologia Marine optics Phase functions Remote sensing reflectance Scattering |
| title | Revisiting the role of oceanic phase function in remote sensing reflectance |
| title_full | Revisiting the role of oceanic phase function in remote sensing reflectance |
| title_fullStr | Revisiting the role of oceanic phase function in remote sensing reflectance |
| title_full_unstemmed | Revisiting the role of oceanic phase function in remote sensing reflectance |
| title_short | Revisiting the role of oceanic phase function in remote sensing reflectance |
| title_sort | revisiting the role of oceanic phase function in remote sensing reflectance |
| topic | Marine optics Phase functions Remote sensing reflectance Scattering |
| url | http://www.iopan.gda.pl/oceanologia/54_1.html#A2 |
| work_keys_str_mv | AT włodzimierzfreda revisitingtheroleofoceanicphasefunctioninremotesensingreflectance AT jacekpiskozub revisitingtheroleofoceanicphasefunctioninremotesensingreflectance |