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Code Block
languagepy
#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer
server = ECMWFDataServer()

origin = "babj"
modelVersionDate = "2014-05-01"

def retrieve_data(hindcastDate,modelVersionDate,centre):
    target = "target_s2s_%s_%s.grb" % centre % hindcastDate
    server.retrieve({
       "class": "s2",
       "dataset": "s2s",
       "date": modelVersionDate,
       "expver": "prod",
       "hdate": hindcastDate,
       "levtype": "sfc",
       "origin": centre,
       "param": "165",
       "step": "0",
       "stream": "enfh",
       "target": target,
       "time": "00",
       "type": "cf",
})

hindcastYearList = ["2012", "2013"]
hindcastMonthList = ["08", "09"]
hindcastDayList = ["01", "02"]

for hindcastYear in hindcastYearList:
   for hindcastMonth in hindcastMonthList:
       for hindcastDay in hindcastDayList:
           hindcastDate = hindcastYear + hindcastMonth + hindcastDay
               retrieve_data(hindcastDate)

Some further help for setting the CMA hindcast dates

Code Block
languagepy
titleCMA
for hindcastYear in ["2012", "2013"]:
    for hindcastMonth in ["08", "09"]:
         if hindcastMonth in ["01", "03", "05", "07", "08", "10", "12"]: hindcastDateEnd = "31"
         if hindcastMonth in [ "04", "06", "09", "11"]: hindcastDateEnd = "30"
         for hindcastDay in ["01" ... hindcastDateEnd ]:
            hindcastDate = hindcastYear+hindcastMonth+hindcastDay
            retrieve_data(hindcastDate,"2014-05-01","babj")

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