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| Info | ||
|---|---|---|
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for HindcastYear from 2010 to 2014 |
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A simple web API example, requesting Control forecast, sfc
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for one hdate
| Code Block | ||
|---|---|---|
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#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer
server = ECMWFDataServer()
server.retrieve({
"class": "s2",
"dataset": "s2s",
"date": ModelVersionDate, (ie "2014-05-01"),
"expver": "prod",
"hdate": HindcastDate, (ie the selected HindcastDate eg "2014-04-01"),
"levtype": "sfc",
"origin": "babj",
"param": "165",
"step": "0",
"stream": "enfh",
"target": "CHANGEME",
"time": "00",
"type": "cf",
}) |
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Do you need more CMA re-forecast examples?
A
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web API example requesting data for several hindcastDates (iterating over several hindcastYears, hindcastMonths and hindcastDays)
Let's see how we can change the script above to iterate over several hindcastYears, hindcastMonths and hindcastDays efficiently
Note that each hindcastDate is written into a separate file
Please note that the objective of the this python script below is is only to demonstrate how to make a MARS request efficient via hindcastYears, hindcastMonths and hindcastDays iterations. You need to adapt it to your needs.
| Code Block | ||
|---|---|---|
| ||
#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer
server = ECMWFDataServer()
def retrieve_data(hindcastDate):
target = "target_s2s__%s.grb", % hindcastDate
server.retrieve({
"class": "s2",
"dataset": "s2s",
"date": "2014-05-01",
"expver": "prod",
"hdate": hindcastDate,
"levtype": "sfc",
"origin": "babj",
"param": "165",
"step": "0",
"stream": "enfh",
"target": target,
"time": "00",
"type": "cf",
})
for hindcastYear in ["2012", "2013"]:
for hindcastMonth in ["08", "09"]:
for hindcastDay in ["01", "02"]:
hindcastDate = hindcastYear+hindcastMonth+hindcastDay
retrieve_data(hindcastDate) |
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