Attribution experiment for winter 2019/20 with Indian Ocean SST anomaly of 1997/98 : I98_BC20

Title Attribution experiment for winter 2019/20 with Indian Ocean SST anomaly of 1997/98 : I98_BC20
Description 4-month long 101-ensemble member seasonal attribution experiment (I98_BC20) initialised on 01-November-2019 using the atmosphere-only version of SEAS5 (see Johnson et al., 2019) forced with daily ERA5 SST as in the reference experiment (R20) but with daily SST over the tropical Indian Ocean swapped with that from 2019/20.
DOI 10.21957/203z-v321
Experiment ID hpdd
Experiment class ECMWF Research Department
Examples

Monthly mean Geopotential at 500 hPa

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

server = ECMWFDataServer()

server.retrieve({
    "class": "rd",
    "dataset": "research",
    "date": "2019-11-01",
    "expver": "hpdd",
    "fcmonth": "1/2/3/4",
    "levelist": "500",
    "levtype": "pl",
    "method": "1",
    "number": "0/to/100",
    "origin": "ecmf",
    "param": "z",
    "stream": "msmm",
    "system": "5",
    "target": "output_z500.grib",
    "time": "00:00:00",
    "type": "fcmean"
})

Monthly mean Zonal wind at 60N at all model pressure levels

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

server = ECMWFDataServer()

server.retrieve({
    "area": "60/0/60/360",
    "class": "rd",
    "dataset": "research",
    "date": "2019-11-01",
    "expver": "hpdd",
    "fcmonth": "1/2/3/4",
    "levelist": "1/2/5/10/20/30/50/70/100/150/200/250/300/400/500/700/850/925/1000",
    "levtype": "pl",
    "method": "1",
    "number": "0/to/100",
    "origin": "ecmf",
    "param": "u",
    "stream": "msmm",
    "system": "5",
    "target": "output_u60.grib",
    "time": "00:00:00",
    "type": "fcmean"
})