Date

In this page, analysis are performed with respect to CFOSAT SWIM CWWIC Waves parameters L2 in nominal macro cycles. Some sections have "Details" sub-sections. They are for advanced users, but access is not restricted.

Data set statistics

This section presents general information on the data set such as its geographical and temporal distributions.

Distribution of wave heights :

Distribution of WW3 wave spectrums :

Distribution of trackangles :

Distribution of CFOSAT L2 SWIM significant wave height

This section illustrates the significant wave height distribution for each beam and each partitions coming from CNES (CWWIC) Level2 product divided into 70x90 km boxes.

Significant wave height maps

This section allows to see the significant wave height maps of each beam and each partition of the L2 CWWIC product. It could help to spot some spikes or unrealistic values in specific places.

Mean effective significant wave height value per day of the L2 cwwic box :

Maps of wave heights equivalent to zero

Comparisons CFOSAT versus WW3

Significant Wave Height

Comparison significant wave height between WW3 grids and CFOSAT

Significant wave height from WW3 spectra shown in above figure is a total Significant wave height.

Comparison significant wave height between WW3 spectra and CFOSAT

On those plots the significant wave height from WW3 grid is an effective Hs. It means that the Hs has been estimated from the wave height spectra using a mask from CFOSAT specifications: cut-off from 70m to 500m.

Comparison of dominant wave height between WW3 grid and CFOSAT SWIM L2 CWWIC

Comparisons of dominant wavelength between WW3 grid and CFOSAT SWIM L2 CWWIC

Density plots :

Comparison with bias :

Mean significant wave height bias as function of the wavelength

Those plots are showing the bias of significant wave height as function of the wavelength. The wavelength chosen is the one from WW3 forecasts on 0.5° grids whereas the Hs used to compare to CFOSAT beams is the one from WW3 spectrum using cut-off limits of SWIM sensor.

CFOSAT effective wave height distribution

On those plots the direction convention is the meteorological convention: wave "coming from". The colors denote the rate of measurements per effective significant wave height bins.

WW3 grids wave roses

On this plot the direction convention is the meteorological convention: wave "coming from". The colors denote the rate of measurements per total significant wave height bins.

HS beams with different conditions

Condition on latitude : Wave height between latitude -60 and 60

Coverage of HS where ww3 spectrum total wave height is more than 3m

Data with specific filters

Distance to coast superior than 100km

Sigma0 standard deviation inferior than 4db

Sea ice and land informations

Comparisons CFOSAT versus ALTIKA altimeter

Nadir :


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