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WARNING: This page has been moved to Access ECMWF Public Datasets. |
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| Access ECMWF Public Datasets |
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WARNING: This page has been moved to Access MARS.
Accessing the batch service with Python
Installing the Python library
You can install the ecmwfapi
python library by running:
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sudo pip install https://software.ecmwf.int/wiki/download/attachments/23694554/ecmwf-api-python-client.tgz |
If you cannot run the sudo
command, just download the ecmwf-api-python-client.tgz, extract its content and copy the module ecmwfapi
to a directory pointed by the environment variable PYTHONPATH
.
Installing your API key
To access ECMWF you will need an API key. For that you first need to login at https://apps.ecmwf.int/auth/login/ and then retrieve you key at https://api.ecmwf.int/v1/key/. For this, you will need to have an account on ECMWF web site. Copy the information in this page and paste it in the file $HOME/.ecmwfapirc.
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language | javascript |
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title | Content $HOME/.ecmwfapirc |
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{
"url" : "https://api.ecmwf.int/v1",
"key" : "XXXXXXXXXXXXXXXXXXXXXX",
"email" : "john.smith@example.com"
} |
Sample Python script
Below is a simple Python script making use of the ecmwfapi
library:
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language | python |
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title | Python client |
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#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer
server = ECMWFDataServer()
server.retrieve({
'dataset' : "tigge",
'step' : "24/to/120/by/24",
'number' : "all",
'levtype' : "sl",
'date' : "20071001/to/20071003",
'time' : "00/12",
'origin' : "all",
'type' : "pf",
'param' : "tp",
'area' : "70/-130/30/-60",
'grid' : "2/2",
'target' : "data.grib"
}) |
The "dataset
" parameter is one of:
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<script>
function build_dataset_table(table)
{
var header, loading;
table.addClass("confluenceTable").addClass("tablesorter");
header = $("<tr>").addClass("sortableHeader").appendTo(table);
loading = $('<th class="confluenceTh sortableHeader" data-column="0">').appendTo(header);
loading.text("Loading table...");
$.ajax({url:"https://api.ecmwf.int/v1/datasets?key=public", dataType : 'jsonp', success : function(data) {
var th;
th = $('<th class="confluenceTh sortableHeader" data-column="2">').appendTo(header);
th.text("Description");
th = $('<th class="confluenceTh sortableHeader" data-column="1">').appendTo(header);
th.text("Licence");
$.each(data.datasets,function (i, d) {
var tr,td,a;
tr = $("<tr>").appendTo(table);
td = $('<td class="confluenceTd">').appendTo(tr);
td.text(d.name);
td = $('<td class="confluenceTd">').appendTo(tr);
td.text(d.description ? d.description : "N/A");
td = $('<td class="confluenceTd">').appendTo(tr);
if(d.licence) {
a = $("<a>");
a.appendTo(td);
a.attr("href",d.licence.url);
a.text(d.licence.name);
}
else
{
td.text("N/A");
}
});
loading.text("Dataset");
}, error: function() {
loading.text("Failed to load table");
}});
}
</script>
<div class="table-wrap">
<table id="datasets_table"></table>
</div>
<script>
build_dataset_table($("#datasets_table"));
</script> |
To access these dataset, you need to agree on the the corresponding terms and conditions that can be found at http://apps.ecmwf.int/datasets/
The other parameters are described at: http://www.ecmwf.int/publications/manuals/mars/guide/index.html