Sub-seasonal 9+1 member hindcasts: 1989-2016: CTRL

Title Sub-seasonal 9+1 member hindcasts: 1989-2016: CTRL
Description The control experiment consists of sub-seasonal hindcasts performed with IFS cycle 48r1, without any explicit bias correction or model-error tendencies applied. Hindcasts are initialised on the 15th of each month from 1989 to 2016 and integrated forward for 32 days. For each start date, an ensemble of 10 members is generated, comprising one unperturbed control and nine perturbed members to sample initial-condition uncertainty. The model is run at TCo319 horizontal resolution with 137 vertical levels. No nudging or externally prescribed tendencies are applied during the integrations. As such, this experiment represents the reference configuration against which the impact of the bias-correction approaches is assessed.
DOI 10.21957/5cys-hd79
Experiment ID hvhi
Experiment class ECMWF Research Department
Examples

Retrieve perturbed mebers from 15 January start hindcasts of T/U/V for years 1989 to 2016. 

#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer

server = ECMWFDataServer()

server.retrieve({
    "class": "rd",
    "dataset": "research",
    "date": "2017-01-15",
    "expver": "hvhi",
    "hdate": "1989-01-15/1990-01-15/1991-01-15/1992-01-15/1993-01-15/1994-01-15/1995-01-15/1996-01-15/1997-01-15/1998-01-15/1999-01-15/2000-01-15/2001-01-15/2002-01-15/2003-01-15/2004-01-15/2005-01-15/2006-01-15/2007-01-15/2008-01-15/2009-01-15/2010-01-15/2011-01-15/2012-01-15/2013-01-15/2014-01-15/2015-01-15/2016-01-15",
    "levelist": "10/50/100/200/250/500/700/850/1000",
    "levtype": "pl",
    "number": "1/2/3/4/5/6/7/8/9",
    "param": "130.128/131/132",
    "step": "0/12/24/36/48/60/72/84/96/108/120/132/144/156/168/180/192/204/216/228/240/252/264/276/288/300/312/324/336/348/360/372/384/396/408/420/432/444/456/468/480/492/504/516/528/540/552/564/576/588/600/612/624/636/648/660/672/684/696/708/720/732/744/756/768",
    "stream": "enfh",
    "target": "output",
    "time": "00:00:00",
    "type": "pf"
})

Retrieve control (unperturbed) member from 15 April start hindcasts of Z for years 1989 to 2016. 

#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer

server = ECMWFDataServer()

server.retrieve({
    "class": "rd",
    "dataset": "research",
    "date": "2017-04-15",
    "expver": "hvhi",
    "hdate": "1989-04-15/1990-04-15/1991-04-15/1992-04-15/1993-04-15/1994-04-15/1995-04-15/1996-04-15/1997-04-15/1998-04-15/1999-04-15/2000-04-15/2001-04-15/2002-04-15/2003-04-15/2004-04-15/2005-04-15/2006-04-15/2007-04-15/2008-04-15/2009-04-15/2010-04-15/2011-04-15/2012-04-15/2013-04-15/2014-04-15/2015-04-15/2016-04-15",
    "levelist": "10/50/100/200/250/500/700/850/1000",
    "levtype": "pl",
    "param": "129.128",
    "step": "0/12/24/36/48/60/72/84/96/108/120/132/144/156/168/180/192/204/216/228/240/252/264/276/288/300/312/324/336/348/360/372/384/396/408/420/432/444/456/468/480/492/504/516/528/540/552/564/576/588/600/612/624/636/648/660/672/684/696/708/720/732/744/756/768",
    "stream": "enfh",
    "target": "output",
    "time": "00:00:00",
    "type": "cf"
})