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.
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