A number of
parameters are available for every member of the ensemble and the
control forecasts. A GRIB ECMWF local Code Table 2, version 140 is
used for wave EPS data. The parameters supported are listed in the
Table 7.1 below.
Table 7.1 WAVE EPS Parameters
|
FIELD CODE
|
MARS ABBREV.
|
FIELD NAME
|
UNITS
|
NO. OF BITS/VAL.
|
|
215
|
UST
|
U-component stokes
drift
|
m**s-1
|
16
|
|
216
|
VST
|
V-component stokes
drift
|
m**s-1
|
16
|
|
220
|
MP1
|
Mean wave period
based on first moment
|
s
|
16
|
|
221
|
MP2
|
Mean wave period
based on second
moment
|
s
|
16
|
|
222
|
WDW
|
Wave spectral
directional width
|
-
|
16
|
|
223
|
P1WW
|
Mean wave period
based on first moment
for wind waves
|
s
|
16
|
|
224
|
P2WW
|
Mean wave period
based on second
moment for wind
waves
|
s
|
16
|
|
225
|
DWWW
|
Wave spectral
directional width for wind
waves
|
-
|
16
|
|
226
|
P1PS
|
Mean wave period
based on first moment
for swell
|
s
|
16
|
|
227
|
P2PS
|
Mean wave period
based on second
moment for swell
|
s
|
16
|
|
228
|
DWPS
|
Wave spectral
directional width for swell
|
-
|
16
|
|
229
|
SWH
|
Significant wave
height
|
m
|
16
|
|
230
|
MWD
|
Mean wave
direction
|
degree
|
16
|
|
231
|
PP1D
|
Peak period
1D-spectra
|
s
|
16
|
|
232
|
MWP
|
Mean wave period
|
s
|
16
|
|
233
|
CDWW
|
Coefficient of drag
with waves Significant
|
-
|
16
|
|
234
|
SHWW
|
Height of wind
waves
|
m
|
16
|
|
235
|
MDWW
|
Mean direction of
wind waves
|
degree
|
16
|
|
236
|
MPWW
|
Mean period of wind
waves
|
s
|
16
|
|
237
|
SHTS
|
Significant height
of total swell
|
m
|
16
|
|
238
|
MDTS
|
Mean direction of
total swell
|
degree
|
16
|
|
239
|
MPTS
|
Mean period of total
swell
|
s
|
16
|
|
244
|
MSQS
|
Mean Square
Slope
|
-
|
16
|
|
245
|
WIND
|
10 Meter Wind
Speed
|
m/s
|
16
|
|
252
|
WSK
|
Wave spectral
kurtosis
|
-
|
16
|
|
253
|
BFI
|
Benjamin-Feir
index
|
-
|
16
|
|
254
|
WSP
|
Wave spectral
peakedness
|
s**-1
|
16
|
The two-dimensional
wave spectra field is not available as Wave EPS parameter.
Parameters available
in dissemination are listed in the Table 7.1.
Horizontal
resolution
- 0.5 x 0.5 degrees
latitude-longitude grid, or multiples thereof
- any sub-area
Verifying times
- T+0 to T+144 at 3
hour intervals and T+150 to T+360 at 6 hour intervals;
Control,
Perturbed and Calibration/Validation forecast requirements
The following command
language parameters are specific for the control and perturbed
forecast requirements. Other DIS parameters are listed under the
7.3 above.
|
TYPE
|
=
|
CONTROL FORECAST
PERTURBED
FORECAST
CALIBRATION
VALIDATION
|
[CF]
[PF]
[CV]
|
|
NUMBER
|
=
|
n-ENSEMBLE
NUMBER
|
[1-50]
off
[1-2]
|
(for TYPE=PF)
(for TYPE=CF)
(for TYPE=CV)
|
|
STEP
|
=
|
* (hours)
gives forecast time
step(s);
0/to/144/by 3 and
144/to/360/by/6
NB ALL is not
permitted.
|
|
PARAM
|
=
|
Field name
abbreviation
*
NB ALL is not
permitted.
Available
parameters are listed in the Table 7.1.
|
|
