Backscatter
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_backscatter_vs_wind_glo_{yyyy}-{MM}-{dd}_WW3.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_backscatter_histo_glo_{yyyy}-{MM}-{dd}.png |
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Backscatter value (?0) [dB] as a function of wind speed. The Upper (resp. lower) line represents the CMOD-IFR2 empirical scattering model for Upwind (resp. crosswind) cases | Histogram of the WVW backscatter value (?0) [dB] |
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_backscatter_map_glo_{yyyy}-{MM}-{dd}.png |
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Global map of backscatter value (?0) [dB] |
Backscatter comparisons
In this part, the WW3 backscatter values refer to the output of the empirical CMOD-IFR2 model fed with ECMWF winds (speed and directions). Incidence angle values of WV points are used to estimate CMOD-IFR2 outputs.
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_backscatter_scatterplot_Global_{yyyy}-{MM}-{dd}_WW3.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_incidence_histo_glo_{yyyy}-{MM}-{dd}.png |
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http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_backscatter_scatterplot_UpWinds_{yyyy}-{MM}-{dd}_WW3.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_backscatter_scatterplot_CrossWinds_{yyyy}-{MM}-{dd}_WW3.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_backscatter_scatterplot_DownWinds_{yyyy}-{MM}-{dd}_WW3.png |
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Significant Wave Height (SWH) analysis
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_swh_difference_scatter_glo_{yyyy}-{MM}-{dd}_WW3.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_swh_difference_wind_impact_glo_{yyyy}-{MM}-{dd}_WW3.png |
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http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_swh_difference_map_glo_{yyyy}-{MM}-{dd}.png |
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http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_swh_difference_histo_nor_{yyyy}-{MM}-{dd}_WW3.png
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_swh_difference_histo_tro_{yyyy}-{MM}-{dd}_WW3.png
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_swh_difference_histo_sou_{yyyy}-{MM}-{dd}_WW3.png
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http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_period_difference_scatter_glo_{yyyy}-{MM}-{dd}_WW3.png
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_period_difference_histo_glo_{yyyy}-{MM}-{dd}_WW3.png
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Regional analysis of the wave directional distribution
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http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/model_wind_directional_distribution_nor_{yyyy}-{MM}-{dd}.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_swh_directional_distribution_nor_{yyyy}-{MM}-{dd}.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/ww3_swh_directional_distribution_nor_{yyyy}-{MM}-{dd}.png |
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http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/model_wind_directional_distribution_tro_{yyyy}-{MM}-{dd}.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_swh_directional_distribution_tro_{yyyy}-{MM}-{dd}.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/ww3_swh_directional_distribution_tro_{yyyy}-{MM}-{dd}.png |
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http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/model_wind_directional_distribution_sou_{yyyy}-{MM}-{dd}.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_swh_directional_distribution_sou_{yyyy}-{MM}-{dd}.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/ww3_swh_directional_distribution_sou_{yyyy}-{MM}-{dd}.png |
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http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/model_wind_directional_distribution_glo_{yyyy}-{MM}-{dd}.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_swh_directional_distribution_glo_{yyyy}-{MM}-{dd}.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/ww3_swh_directional_distribution_glo_{yyyy}-{MM}-{dd}.png |
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Mean wave direction relative to SAR
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_phi_difference_glo_{yyyy}-{MM}-{dd}_WW3.png |
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Global comparison between SAR and WW3 mean wave direction relative to SAR (in deg) |
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_phi_difference_nor_{yyyy}-{MM}-{dd}_WW3.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_phi_difference_tro_{yyyy}-{MM}-{dd}_WW3.png | http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_model_phi_difference_sou_{yyyy}-{MM}-{dd}_WW3.png |
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Global distribution of the ASAR WVW azimuth cutoff values
Global map of SAR WVW azimuth cut-off values (left), and similar coverage of co-located ECMWF wind speed values (right)
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/sar_az_cutoff_map_glo_{yyyy}-{MM}-{dd}.png
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/model_wind_map_glo_{yyyy}-{MM}-{dd}.png
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Analysis of the normalized variance
http://www.ifremer.fr/cersat/images/esa/sarqc/ers2/ww3/{yyyy}/{MM}/swh_nv_scatterplot_glo_{yyyy}-{MM}-{dd}.png |
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WVW significant wave height vs. image normalized variance