MERCATOR OCEAN JOURNA:
SEPTEMBER 2021
57
= 7
CO
= 6
5
A
SWH Max
Dorr +0.960
RMSE +0.373 m
Bias +0.245 m
RErr' 4.97 "A
Da
AA
r
a
A.
E
un
53
a
>52
=
Entries = 5292
Mean R = 1.1223 (m)
Mean M = 1.06 (m}
Std R = 0.627 (m)
Std M = 0.65 (m)
SZMSE = 0.238 {m}
Sl = 0.205
Bias = -D.0609 (m}
CORR = 0.0235
| 5000
5000
4000
3000
2000
‘000
= = 0.05x
02 04 06 08 10 12 14 16 18
5
£ J
Sentinel 3a 2018 OND Hs (m)
—— SWH WAM a......x SWH Jason (all merged)
3
34
5
SWH Iml and Dirsction 2016 1203 06:00 and J52 track
im]
» £
Zt
=
n
Be
_ _SWH [m] of WAM and JS2 Track 2016 12 03 05:58:20 - 05:57:51
JS2
WAM
4
-
ki
mo
30
39
Longitude
AN
I
56:15 56:32 56:49 57:07 57:24 57:41 Bf:
„igure 6: Top: (left) timeseries of maximum significant wave heights derived from combined Jason satellite measurements and BS-WAM
MYP: (right) Scatter plots showing Sentinel-3a satellite measurements versus BS-WAV NRT significant wave heights for Q4 2018. Bottom
Distribution of significant wave height of WAM with overlaid Jason-2 satellite track on 03 December 2016 06:00 UTC (left) and along-track
measured and computed sianificant wave height (richt)
The nominal product for BS-WAV MY [17] provides a
reanalysis for the past reconstruction of the wave climate in
the Black Sea starting from 1979 as hourly-instantaneous.
The modelling framework is similar to NRT: it accounts
for wave breaking and assimilation of significant wave
height and wind speed as provided by AVISO satellite
2002-2013 | a 2008-2016
(Jason-1) (Jason-2)
BIAS RMSD | BIAS RMSD
3.25 17.00 -0.67 23.6
T
LI
I
products (ftp-access.aviso.altimetry.fr) using an Optima:
Interpolation (Ol) scheme. The system is forced by ECMWF
ERA5 reanalysis atmospheric forcing at hourly frequency.
Table 2 shows EAN for significant wave height over the
period 1979-2019
2016-2019 T
(Jason-3)
BIAS RMSD
S —
-7.6 263
2002-2019
(combined)
BIAS RMSD
0.475 20.9
Table 2: Estimated accuracy numbers corresponding to the comparison between hourly model and measured significant wave height, 2002-
2019. All values are centimetres
