|
|
All new enhancements
to the dissemination service are supported in GRIB code only. The
existing support for data in GRID code is continued only for
historical reasons.
Verifying
times available
- analysis at 18, 00,
06 and 12 UTC
- forecasts at 3
hourly intervals from 3 to 144 hours, based on 12 UTC and 00 UTC
data
- forecasts at 6
hourly intervals from 144 to 240 hours, based on 12 UTC and 00 UTC
data
Parameters
All of the parameters
listed in table 4.2, and also four-day and five-day means of 500hPa
geopotential height, 850hPa temperature, mean sea level pressure,
and total rainfall are supported. Spectral orography field is
available as the geopotential field at the model level 1 whereas
grid-point orography is available as the geopotential field at the
surface level (both fields can be requested as analyses fields
only).
- Table 4.2
Deterministic Products
- * denotes field
accumulated since start of forecast ** denotes spectrally filtered
field +Analysis only ++ Forecast only
|
FIELD CODE
|
MARS ABBREV.
|
FIELD NAME
|
UNITS
|
NO. OF BITS/VAL.
|
|
3
|
PT
|
Potential
Temperature
|
K
|
16
|
|
27
|
CVL
|
Low Vegetation Cover
+
|
0-1
|
8
|
|
28
|
CVH
|
High Vegetation
Cover +
|
0-1
|
8
|
|
29
|
TVL
|
Type of Low
Vegetation +
|
-
|
16
|
|
30
|
TVH
|
Type of High
Vegetation +
|
-
|
16
|
|
31
|
CI
|
Sea Ice Cover
|
0-1
|
8
|
|
32
|
ASN
|
Snow Albedo
|
0-1
|
8
|
|
33
|
RSN
|
Snow Density
|
kg m**-3
|
16
|
|
34
|
SSTK
|
Sea Surface
Temperature
|
K
|
16
|
|
35
|
ISTL1
|
Ice surface
temperature level1
|
K
|
12
|
|
36
|
ISTL2
|
Ice surface
temperature level 2
|
K
|
12
|
|
37
|
ISTL3
|
Ice surface
temperature level 3
|
K
|
12
|
|
38
|
ISTL4
|
Ice surface
temperature level 4
|
K
|
12
|
|
39
|
SWVL1
|
Volumetric Soil
Water layer 1
|
m3m-3
|
12
|
|
40
|
SWVL2
|
Volumetric Soil
Water layer 2
|
m3m-3
|
12
|
|
41
|
SWVL3
|
Volumetric Soil
Water layer 3
|
m3m-3
|
12
|
|
42
|
SWVL4
|
Volumetric Soil
Water layer 4
|
m3m-3
|
12
|
|
43
|
SLT
|
Soil type +
|
-
|
16
|
|
44
|
ES
|
Snow Evaporation
|
m of water
|
16
|
|
45
|
SMLT
|
Snowmelt
|
m of water
|
16
|
|
49
|
10FG
|
Wind gust at 10
meters ++
|
m/s
|
16
|
|
53
|
MONT
|
Montgomery Potential
+
|
m**2/s**2
|
16
|
|
54
|
PRES
|
Pressure
|
Pa
|
16
|
|
57
|
UVB
|
Downward UV
radiation at the sfc
|
Wm**-2
|
12
|
|
58
|
PAR
|
Photosynthetically
active radiation at the surface
|
Wm**-2
|
12
|
|
59
|
CAPE
|
Convective available
potential energy
|
Jkg**-1
|
12
|
|
60
|
PV
|
Potential
Vorticity
|
m2s-1Kkg-1
|
16
|
|
121
|
MX2T6
|
Max. temp. at 2m in
the past 6hours
|
K
|
12
|
|
122
|
MN2T6
|
Min. temp. at 2m in
the past 6hours
|
K
|
12
|
|
123
|
10FG6
|
Wind gust at 10m in
the past 6hours
|
m/s
|
16
|
|
128
|
BV
|
Budget Values
|
-
|
-
|
|
129
|
Z
|
Geopotential
|
m**2s**-2
|
16
|
|
130
|
T
|
Temperature
|
K
|
12
|
|
130
|
TA
|
850 hPa temperature
anomaly**
|
K
|
16
|
|
131
|
WIND
|
Wind speed &
direction
|
-
|
20
|
|
131
|
U
|
U-velocity
|
m/s
|
12
|
|
132
|
V
|
V-velocity
|
m/s
|
12
|
|
133
|
Q
|
Specific
humidity
|
kg/kg
|
12
|
|
134
|
SP
|
Surface pressure
|
Pa
|
12
|
|
135
|
W
|
Vertical
velocity
|
Pa/s
|
16
|
|
136
|
TCW
|
Total Column
Water
|
kg/m**2
|
12
|
|
137
|
TCWV
|
Total column water
vapour
|
kg/m**2
|
12
|
|
138
|
VO
|
Vorticity
|
s-1
|
16
|
|
139
|
STL1
|
Soil Temperature
Level 1
|
K
|
12
|
|
139
|
ST
|
Surface
temperature
|
K
|
12
|
|
141
|
SD
|
Snow depth
|
m
|
12
|
|
142
|
LSP
|
Large scale
precipitation*
|
m
|
16
|
|
143
|
CP
|
Convective
precipitation*
|
m
|
16
|
|
144
|
SF
|
Snow fall*
|
m
|
16
|
|
145
|
BLD
|
Boundary Layer
Dissipation
|
Wm**-2s
|
12
|
|
146
|
SSHF
|
Surface sensible
heat flux ++
|
Wm**-2s
|
12
|
|
147
|
SLHF
|
Surface latent heat
flux ++
|
Wm**-2s
|
12
|
|
148
|
CHNK
|
Charnock
|
-
|
16
|
|
151
|
MSL
|
Mean sea level
pressure
|
Pa
|
12
|
|
152
|
LNSP
|
Log surface
pressure
|
-
|
12
|
|
155
|
D
|
Divergence
|
s-1
|
16
|
|
156
|
GH
|
Height
(geopotential)
|
m
|
16
|
|
156
|
THK
|
1000/500 hPa
thickness**
|
m
|
16
|
|
156
|
THKA
|
1000/500 hPa
thickness anomaly**
|
m
|
16
|
|
157
|
R
|
Relative
humidity
|
-
|
8
|
|
159
|
BLH
|
Boundary Layer
Height
|
m
|
16
|
|
160
|
SDOR
|
Standard Deviation
Orography +
|
-
|
16
|
|
161
|
ISOR
|
Anisotrophy Subgrid
Orography +
|
-
|
16
|
|
162
|
ANOR
|
Angle of Subgrid
Orography +
|
rad
|
16
|
|
163
|
SLOR
|
Slope of Subgrid
Orography
|
-
|
16
|
|
164
|
TCC
|
Total cloud
cover
|
(0-1)
|
8
|
|
165
|
10WN
|
10 m wind speed
& direction
|
-
|
20
|
|
165
|
10U
|
10 metre U
|
m/s
|
12
|
|
166
|
10V
|
10 metre V
|
m/s
|
12
|
|
167
|
2T
|
2 metre
temperature
|
K
|
12
|
|
168
|
2D
|
2 metre dewpoint
temperature
|
K
|
12
|
|
169
|
SSRD
|
Surface solar
radiat. downwards++
|
W m**-2 s
|
16
|
|
170
|
STL2
|
Soil Temperature
Level 2
|
K
|
12
|
|
172
|
LSM
|
Land/sea mask +
|
(0,1)
|
8
|
|
173
|
SR
|
Surface Roughness
+
|
m
|
16
|
|
174
|
AL
|
Albedo +
|
-
|
16
|
|
175
|
STRD
|
Surface thermal
radi. downwards++
|
W m**-2 s
|
16
|
|
176
|
SSR
|
Surface Solar
Radiation ++
|
W m**-2 s
|
16
|
|
177
|
STR
|
Surface Thermal
Radiation ++
|
W m**-2 s
|
16
|
|
178
|
TSR
|
Top Solar
Radiation
|
W m**-2 s
|
16
|
|
179
|
TTR
|
Top Thermal
Radiation
|
W m**-2 s
|
16
|
|
180
|
EWSS
|
U-stress*
|
Nm**-2
|
12
|
|
181
|
NSSS
|
V-stress*
|
Nm**-2
|
12
|
|
182
|
E
|
Evaporation ++
|
m of water
|
16
|
|
183
|
STL3
|
Soil Temperature
Level 3
|
K
|
12
|
|
186
|
LCC
|
Low cloud cover
|
(0-1)
|
8
|
|
187
|
MCC
|
Medium cloud
cover
|
(0-1)
|
8
|
|
188
|
HCC
|
High cloud cover
|
(0-1)
|
8
|
|
189
|
SUND
|
Sunshine
duration
|
s
|
16
|
|
195
|
LGWS
|
Latitude Gravity
Wave Stress *
|
Nm**-2s
|
16
|
|
196
|
MGWS
|
Meridional Gravity
Wave Stress *
|
Nm**-2s
|
16
|
|
197
|
GWD
|
Gravity Wave
Dissipation *
|
Nm**-2s
|
16
|
|
198
|
SRC
|
Skin reservoir
content
|
m (ofwater)
|
12
|
|
201
|
MX2T
|
Max. temp. at 2m
since prev. post-processing ++
|
K
|
12
|
|
202
|
MN2T
|
Min. temp. at 2m
since prev. post-processing ++
|
K
|
12
|
|
203
|
O3
|
Ozone Mass Mixing
Ratio
|
Kg/Kg
|
16
|
|
205
|
RO
|
Runoff
|
|
|
|
206
|
TCO3
|
Total column
Ozone
|
Kg/m
|
16
|
|
208
|
TSRC
|
Top Net Solar
Radiation Clear Sky
|
|
|
|
209
|
TTRU
|
Top Thermal
Radiation Upward
|
|
|
|
210
|
SSRC
|
Surface net solar
radiation, clear sky
|
W m**-2
|
16
|
|
211
|
STRC
|
Surface net thermal
radiation, clear sky
|
W m**-2
|
16
|
|
228
|
TP
|
Total
precipitation*
|
m
|
16
|
|
234
|
LSRH
|
Log Surface
Roughness - Heat
|
-
|
16
|
|
235
|
SKT
|
Skin temperature
|
K
|
12
|
|
236
|
STL4
|
Soil Temperature
Level 4
|
K
|
12
|
|
238
|
TSN
|
Temperature of snow
layer
|
K
|
12
|
|
243
|
FAL
|
Forecast Albedo
|
(0-1)
|
8
|
|
244
|
FSR
|
Forecast Surface
Roughness
|
m
|
16
|
|
245
|
FLSR
|
Forecast Log Surf.
Roughness Heat
|
-
|
16
|
|
246
|
CLWC
|
Cloud liquid water
content
|
Kg/Kg
|
12
|
|
247
|
CIWC
|
Cloud ice water
content
|
Kg/Kg
|
12
|
|
248
|
CC
|
Cloud cover
|
0-1
|
8
|
|
3.228
|
ZUST
|
Friction
velocity
|
m/s
|
16
|
|
131.228
|
U10N
|
Neutral wind at 10m
x-component
|
m/s
|
16
|
|
132.228
|
V10N
|
Neutral wind at 10m
y-component
|
m/s
|
16
|
|
246.228
|
100U
|
100 metre U wind
component
|
m/s
|
16
|
|
247.228
|
100V
|
100 metre V wind
component
|
m/s
|
16
|
Horizontal
resolution and domain
- 0.125 x 0.125
degrees latitude-longitude grid, or multiples thereof
- any spectral
truncation
- the Gaussian grid
appropriate to the forecast model in use. The following Gaussian
grid numbers are supported: 640, 400, 256, 200, 160, 128, 80, 48
and 32
- any sub-area
Additionally, as an
interim measure, polar stereographic grid systems as defined in
Appendix I section 2, are also supported.
Vertical
resolution
Upper air parameters
are available as follows:
- pressure levels:
1000, 900, 950, 925, 850, 800, 700, 600, 500, 400, 300, 250,
200, 150, 100, 70,
50, 30, 20, 10, 7, 5, 3, 2, 1 hPa
- model levels:
currently 91 hybrid coordinate level
Potential
temperature and potential vorticity levels
Potential Vorticity
level products, parameters PT, PRES, Z, U, V, Q and O3 (Table 4.2)
are available on the level 2000 (as analysis and forecasts
fields).
Potential Temperature
(Isentropic) levels products (Table 4.2) are available as:
- analysis products,
parameters MONT, PRES, PV, Q, VO, D and O3, on levels
265, 275, 285, 300,
315, 330, 350, 370, 395, 430, 475, 530, 600, 700 and 850;
- forecast products,
parameters PV, PRES, VO and D, on levels 300, 315, 330, 350,
370, 395, 475, 600
and 850;
Dissemination requirements
Dissemination
requirements are presented by means of the command language.
Dissemination language parameters are identical to those of MARS. A
description of the MARS command language is given in Meteorological
Bulletin M1.9/2.
Products for
dissemination are defined using the verb DIS followed by an
appropriate selection of parameters. The available parameters are
listed below.
Identification
parameters
|
STREAM
|
=
|
DAILY ARCHIVING
|
[DA]
|
(default)
|
|
DOMAIN
|
=
|
GLOBAL
|
[G]
|
(default)
|
|
TYPE
|
=
|
ANALYSIS
FORECAST
METGRAM
WEATHER
PARAMETER
|
[AN]
[FC]
[MT]
[WP]
|
|
|
LEVTYPE
|
=
|
SURFACE
PRESSURE LEVEL
MODEL LEVEL
POTENTIAL
VORTICITY
POTENTIAL
TEMPERATURE
|
[SFC]
[PL]
[ML]
[PV]
[PT]
|
(GRIB only)
(GRIB only)
(GRIB only)
|
|
LEVELIST
|
=
|
*
(default
1000/850/700/500/400/300)
NB ALL is not
permitted;
(See 4.2.5 for
LEVTYPE=PT/PV products);
(1 - 91 for
LEVTYPE=ML)
|
Target
parameters
|
TARGET
|
=
|
"destination:dissemination_stream_name"
- destination is a
three character destination name;
-
dissemination_stream_name is a two character dissemination stream
name
(the list of
destinations/streams is published on:
https://msaccess.ecmwf.int:9443/do/product/requirements/
)
|
Date and time
parameters
|
PRIORITY
|
=
|
1 - 99
Indicates the
transmission priority of a `dissemination stream'.
(value 1 being the
highest and value 99 being the lowest transmission priority);
|
|
TIME
|
=
|
* (hours)
Gives analysis 12,
18, 00, 06 or forecast base time 12, 00.
|
|
STEP
|
=
|
* (hours) default is
00
Gives forecast and
analysis time step(s);.
For analysis value
is 00.
NB ALL, is not
permitted.
|
Meteorological
parameters
|
PARAM
|
=
|
Field name
abbreviation
*
NB ALL is not
permitted.
Available
parameters are listed in Table 4.2.
|
Data processing
parameters
|
RESOL
|
=
|
*
|
[AV]
|
(default 1279)
|
|
Positive integer
giving the spectral triangular truncation from which products are
derived, e.g. 10 indicates T10 filtered products required. May only
be used with multi-level (i.e. upper air) parameters. May also be
used if spectral products are required.
|
|
FORMAT
|
=
|
GRIB
GRID
|
[GB]
[GD]
|
(default)
|
|
GAUSSIAN
|
=
|
REGULAR
REDUCED
OFF
Indicating Gaussian
grid type. Gaussian grid resolution is given by the GRID
parameter.
|
|
PROJECTION
|
=
|
NORTH POLAR
STEREOGRAPHIC [NP]
OFF
Indicating
projection type. Grid number is given by the GRID.
|
|
GRID
|
=
|
*
*/*
AUTOMATIC [AUTO]
If the form a/b is
used, a latitude-longitude grid is defined,
where:
a= grid resolution
(deg.) along a latitude line (i.e. East/West)
b= grid resolution
(deg.) along a longitude line (i.e. North/South)
Both a and b must
be 0.125 degrees, or multiples thereof, for latitude-longitude
grids.
Note that it is
possible to specify different values for a and b to generate a
quasi-regular grid system with a different resolution in the
West-East direction from that in the North-South direction.This
feature is only valid for latitude-longitude grid.
If a single positive
integer is coded, it is interpreted as Gaussian grid number for
grids defined as GAUSSIAN=REDUCED or REGULAR. The following
Gaussian grid numbers are supported: 640, 400, 256, 200, 160, 128,
80, 48 and 32.
Also, if a single
positive integer is coded with,PROJECTION= NORTH POLAR
STEREOGRAPHIC it is interpreted as a standard area (N3N3) number
for grids from the current product catalogue.
AUTOMATIC - values
for the parameter GRID will be defined automatically based on
STREAM/DOMAIN as well as RESOL/ GAUSSIAN parameter values;
|
|
AREA
|
=
|
*/*/*/*
Output area
definition. Four values (3 decimal places allowed) to provide a
user- defined sub-area as North/West/South/East;
Negative values
indicate western longitudes and southern latitudes.
NB. Only supported
for FORMAT=GRIB.
|
|
ROTATION
|
=
|
OFF to switch off
rotation (default)
a/b
a = is the latitude
of the southern pole of rotation
b = is the
longitude of the southern pole of rotation
Both a and b
(positive or negative) must be 0.125 degrees, or multiples
thereof.
|
|
FRAME
|
=
|
OFF to switch off
the frame option
n
n is the number of
points inward from each edge of defined area required to form a
boundary product. The resulting FM 92 GRIB code will contain bits
set within the appropriate ate flag to indicate that sections 2 and
3 are both present.
This is only
available for GRIB products.
|
|
BITMAP
|
=
|
OFF to switch off
the bitmap option
"filename"
"filename" is the
name of a file containing a valid user-defined bitmap specification
to build a product by selecting data from points of a latitude-
longitude or a
Gaussian grid.
This is only
available for GRIB products.
|
|
ACCURACY
|
=
|
NORMAL
ARCHIVED VALUE
n
|
[N]
[AV]
|
(default) - GRIB
only
|
|
n is the number of
bits per packed value. n must not be less than half of default
value nor greater then 24.
[N] - Default values
are listed in the Table 4.2
[AV] - Resulting
field will have accuracy of the originally generated and archived
field.
|
|
PACKING
|
=
|
ARCHIVED VALUE
SIMPLE
SECOND ORDER
COMPLEX
|
[AV]
[SIM]
[SO]
[CO]
|
(default)
|
|
AV - GRIB packing as
currently in use, at the moment SIMPLE for grid point data and
COMPLEX for spherical harmonics data.
SIM - simple packing
(both grid point and spherical harmonics data);
SO - grid point data
only (substantiality reduces the size of GRIB messages);
CO - spherical
harmonics data only;
|
|
PADDING
|
=
|
AUTOMATIC
NONE
n
|
[AUTO]
[N]
|
as currently in use
(default);
no padding;
|
|
n is the number of
bytes to which multiple the binary message is padded to with NULL
bytes;
The meaning of AUTO
is at the moment 120 bytes for GRIB data and 8 bytes for BUFR data.
Also, these are the only values supported for n at the moment.
|
|
OPTIONS
|
=
|
NORMAL
WMO ENVELOPE
GTS PRODUCT
DELAY
|
[NORM] (default)
[WMOE]
[WMOE]
[DELA]
|
|
Note:
1. WMOE is not
permitted for FORMAT=GRIB;
2. DELAY causes
products to be generated, but not transmitted;
DELAY products can
be obtained using the repeat facility.
|
Command
language example
The following example
defines a set of products to be generated and disseminated to the
destination "ECM" under the dissemination stream name "EC":
DIS,
TARGET="ECM:EC",STREAM=DA,EXPVER=1,DOMAIN=G,OPTI=NORM,FORM=GB,
TIME=12/18/00/06,
FILE=BIN,ACCU=NORN,
TYPE=AN,LEVT=SFC,LEVE=OFF,GRID=0.125/0.125,AREA=90./-90./0./90.,
PARA=LCC/MCC/HCC/TCC/STL1/SWL3,STEP=00
* This DIS requests
number of surface parameters from all four analysis cycles on the
0.1250 by 0.1250 latitude-longitude grid. It also defines
dissemination file format as BINARY and the packing accuracy of
GRIB code to NORMAL.
DIS,
LEVT=PL,LEVE=1000/925/850/700/500/400/300/250/200/150/100/70/50/30/
10,PARA=U/V/GH/T
* This DIS requests
parameters from all four analysis cycles on the 0.1250 by 0.1250
latitude-longitude grid as the previous one but on pressure
levels.
DIS,
ROTATION=-30.0/-10.0,AREA=14.0/-10.0/-12.0/20.0,
BITMAP="MAP_002.DAT"
* This DIS requests the
same parameters as the previous requirement but on rotated
latitude-longitude grid. Note that resolution (0.1250 by 0.1250)
has not changed. Only the data from points selected by the bitmap
defined in the file MAP_002.DAT will be disseminated.
DIS,
TYPE=FC,TIME=12/00,LEVT=SFC,LEVE=OFF,ROTATION=OFF,BITMAP=OFF,
GRID=1.0/1.0,AREA=90./-90./0./90.,PARA=TP/TCC/ISTL2/SWVL2,
STEP=6/to/240/by/6
* This DIS defines
number of surface parameters for a number of forecast time steps.
Note that the ROTATION and the BITMAP parameters have been switched
OFF.
DIS,
LEVT=PL,LEVE=1000/925/850/700/500,PARA=U/V/T
* This DIS requests
parameters from the same forecast time steps as the previous on
pressure levels.
DIS,
LEVT=ML,FRAME=5,
LEVE=1/to/91
* This DIS requests the
same parameters as the previous requirement but on 91 model levels.
Note that corresponding pressure values have to be specified when
requesting model level data. Also, note that this DIS requests data
in the form of rectangular "hollow boxes", where 5 points inward
from each edge are requested.
DIS,
LEVT=PL,PARA=GH,LEVE=500,STEP=5000,ACCU=9,FRAME=OFF,
GRID=2.5/2.5,AREA=90.0/-180.0/0.0/-90.0,
DIS,STEP=4000
* These two DIS
requests define five and four days mean geopotential height fields
respectively.
DIS,
PARA=GH/T,LEVE=500,LEVT=PL,RESO=AV,FRAME=OFF,ACCU=12,
STEP=240
* This DIS requests two
spectrally filtered spherical harmonics parameters on 500 hPa. It
also requests each data value to be packed into 12 bits when coding
into GRIB.
DIS,
LEVT=PL,PARA=THK/THKA,LEVE=500,RESO=10,STEP=240,ACCU=NORM,
GRID=1.5/1.5,AREA=90.0/0.0/ 18.0/ 90.0
* This DIS defines
thickens and thickens anomaly fields.
DIS,LEVT=PL,PARA=TA,LEVE=850,RESO=10
* This DIS defines
temperature anomaly field.
DIS,
LEVT=SFC,LEVE=OFF,GAUSSIAN=REDUCED,GRID=400,AREA=89.57/5./80./355.,
PARA=10WN/2D/2T/TP/10U/10V
* This DIS requests
number surface parameters on quasi regular Gaussian grid.
DIS,
TYPE=MT,FORM=BUFR,REPR=LL,STEP=240,
AREA=59.8/10.0/59.8/10.0
DIS,
AREA=51.4/0.9/51.4/0.9
* These two
requirements request metgram data in BUFR format for two different
locations.
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