Access test data for the NCAR/UCAR Weather Research and Forecasting (WRF) Model

Info

Support level for this dataset

This data is provided as a 'self-serve' - documentation is provided, but no support service.

However, if the data seems broken or corrupt, please report it via our support portal and we will respond during normal office hours.

Support requests should be raised via the ECMWF Support Portal.

About this Dataset

ECMWF has provided a static 3-days test dataset to run WRF model based on vtable.txt (see below).

Tip
Data can be accessed from: ftp://ftp.ecmwf.int/pubpublic/wrf

The data provided

0.1 degree resolution (~9km)
from the deterministic (HRES) model:
- runs 00/12
  - hourly time steps to step 90, 3-hourly to step 144, and 6-hourly to step 240.
- runs 06/18
  - hourly time steps to step 90

A table

Table of the parameters included

More information

Further documentation about WRF

Dedicated can be found below and further documentation about WRF can be found here: https://www.mmm.ucar.edu/weather-research-and-forecasting-modelA dedicated user guide for WRF-ARW is available here: http://www2.mmm.ucar.edu/wrf/users/docs/user_guide_v4/contents.html and for HWRF: https://dtcenter.org/HurrWRF/users/docs/index.php and for HWRF

The files are provided in a compressed tar.gz format, one per run. If you decompress the tar file, you will get 1 file per step ready to be used by WRF. This is the name format:

No Format
ECMWF_<DATE>_<BASE_TIME>_<3_DIGIT_STEP>_<AREA>.grb

For example, the file ECMWF_20180601_0000_europe.tar.gz contains:

No Format
ECMWF_20180601_0000_000_europe.grb ECMWF_20180601_0000_001_europe.grb ECMWF_20180601_0000_002_europe.grb ECMWF_20180601_0000_003_europe.grb ...

In case you need to manipulate the GRIB files, we recommend ecCodes. In particular you can use the grib_copy tool.

If you wish to trial further real-time data for up to 4-weeks for non-commercial and non-operational use, please open a ticket via the Support Portal.

tool.

Info

title	Access ECMWF WRF Test Data

In order to download anonymously, please connect using anonymous (or ftp) and no password:

Examples:

user@local ~ $> ftp anonymous@ftp
$ ftp ftp.ecmwf.int
Connected to ftp
-int
.ecmwf.int
.
220-**************************************************
220-European Centre for Medium-range Weather Forecasts
220-
220- You are connected to the ECMWF User FTP service
220-
220-    All connections and transfers are logged
220 **************************************************
(136.156.208.195).
Name (ftp.ecmwf.int): anonymous
230 Anonymous user logged
in
in
Remote system type is UNIX.


Using binary mode to transfer files.


ftp> ls
227 Entering Passive Mode (136,156,208,195,117,70)
150 Accepted data connection
drwxr-xr-x 20 0 0 20 Jan 4 14:40 public
226-Options: -l
226 1 matches total
ftp> cd
pub
public/
wrf
wrf
250 OK. Current directory is /
pub
public/
wrf
ftp>
wrf

Or to download a file directly:

Code Block
wget ftp://anonymous@ftpanonymous@bolftp.ecmwf.int:/pubpublic/wrf/name-of-the-file.extension

Anchor

	table_parameters
	table_parameters

Parameter ID

Parameter Name

Levels Provided

Name

Units

129

GH

100, 250, 500, 850, 1000 hPa

Geopotential Height

m

130

TT

100, 250, 500, 850, 1000 hPa

Temperature

K

131

UU

100, 250, 500, 850, 1000 hPa

U component of wind velocity

m/s

132

VV

100, 250, 500, 850, 1000 hPa

V component of wind velocity

m/s

157

RH

100, 250, 500, 850, 1000 hPa

Relative Humidity

%

165

10U

Surface (10m)

U component of wind velocity

m/s

166

10V

Surface (10m)

V component of wind velocity

m/s

167

2T

Surface (2m)

2m Temperature

K

168

2D

Surface (2m)

2m Dewpoint Temperature

K

172

LSM

Surface

Land Sea Mask

0/1 Flag

134

SP

Surface

Surface Pressure

Pa

151

MSL

Surface

Mean Sea Level Pressure

Pa

235

SKT

Surface

Skin Temperature

K

31

CI

Surface

Sea Ice Fraction

fraction

34

SST

Surface

Sea Surface Temperature

K

33

RSN

Surface

Snow Density

kg/m3

141

SD

Surface

Snow Depth

m of water equivalent

139

STL1

Surface

Soil Temperature 0-7cm

K

170

STL2

Surface

Soil Temperature 7-28cm

K

183

STL3

Surface

Soil Temperature 28-100cm

K

236

STL4

Surface

Soil Temperature 100-255cm

K

39

SWVL1

Surface

Soil Moisture 0-7cm

m3 / m3

40

SWVL2

Surface

Soil Moisture 7-28cm

m3 / m3

41

SWVL3

Surface

Soil Moisture 28-100cm

m3 / m3

42

SWVL4

Surface

Soil Moisture 100-255cm

m3 / m3

Vtable.txt

The MARS retrieval scripts (for those with MARS archive access):

Code Block

language	bash
title	Pressure Levels

retrieve,
    class     = od,
    stream    = oper,
    type      = fc,
    expver    = 0001,
    date      = 20180601,
    time      = 00/12,
    step      = 0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28/29/30/31/32/33/34/35/36/37/38/39/40/41/42/43/44/45/46/47/48/49/50/51/52/53/54/55/56/57/58/59/60/61/62/63/64/65/66/67/68/69/70/71/72/73/74/75/76/77/78/79/80/81/82/83/84/85/86/87/88/89/90/93/96/99/102/105/108/111/114/117/120/123/126/129/132/135/138/141/144/150/156/162/168/174/180/186/192/198/204/210/216/222/228/234/240,
    area      = 73.5/-27/33/45, #europe N/W/S/E area
    levtype   = pl,
    levelist  = 1000/850/500/250/100/50,
    param     = 129.128/130.128/157.128/131.128/132.128,
    grid      = 0.1/0.1,
    target    = "ECMWF_PL_[DATE]_[TIME]_europe.grb"

Code Block

language	bash
title	Surface

retrieve,
    class     = od,
    stream    = oper,
    type      = fc,
    expver    = 0001,
    date      = 20180601,
    time      = 00/12,
    step      = 0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28/29/30/31/32/33/34/35/36/37/38/39/40/41/42/43/44/45/46/47/48/49/50/51/52/53/54/55/56/57/58/59/60/61/62/63/64/65/66/67/68/69/70/71/72/73/74/75/76/77/78/79/80/81/82/83/84/85/86/87/88/89/90/93/96/99/102/105/108/111/114/117/120/123/126/129/132/135/138/141/144/150/156/162/168/174/180/186/192/198/204/210/216/222/228/234/240,
    area      = 73.5/-27/33/45, #europe N/W/S/E area
    levtype   = sfc,
    param     = 129.128/165.128/166.128/167.128/168.128/172.128/134.128/151.128/235.128/31.128/34.128/141.128/139.128/170.128/183.128/236.128/39.128/40.128/41.128/42.128/33.128,
    grid      = 0.1/0.1,    
    target    = "ECMWF_SFC_[DATE]_[TIME]_europe.grb"

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Table of Contents

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title	See also

ECMWF Service Status

ECMWF Real-time Catalogue

ECMWF Archive Catalogue

ECMWF Open Charts

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title	Get help

Support level for this dataset

This data is provided as a 'self-serve' - documentation is provided, but no support service.

However, if the data seems broken or corrupt, please report it via our support portal and we will respond during normal office hours. Create a support ticket in our Support portal

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Old Version 6

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