Retrieving fields with polytope

The polytope source provides access to the Polytope web services.

The following example retrieves data from the ECMWF MARS archive using polytope. The dataset was prepared for the OGC GeoDataCubes working group, see details here.

[1]:

import earthkit.data as ekd

request = {
    'stream': 'oper',
    'levtype': 'pl',
    'levellist': '500',
    'param': '129.128',
    'step': '0/12',
    'time': '00',
    'date': '20200915',
    'type': 'fc',
    'class': 'rd',
    'expver': 'hsvs',
    'domain': 'g'
}

ds = ekd.from_source("polytope", "ecmwf-mars", request, stream=False)
ds.ls()

[1]:

	centre	shortName	typeOfLevel	level	dataDate	dataTime	stepRange	dataType	number	gridType
0	ecmf	z	isobaricInhPa	500	20200915	0	0	fc	0	sh
1	ecmf	z	isobaricInhPa	500	20200915	0	12	fc	0	sh

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