Shared data between various controllers

I have a project where I need to build an Ember application. The application will have many routes and some of the routes will have some model.

My problem at the moment is that some information is global, meaning they are present in each page (.hbs) and I need to update it periodically.

I've tried to put information on the application route like the following but it didn't work, the content is not accessible on other routes:

import Ember from 'ember';

export default Ember.Route.extend({
  model: function(params) {
    return Ember.$.getJSON('/api/users/current')
  }
});

I've also tried to reload the information with a setInterval but this didn't work either.

import Ember from 'ember';

export default Ember.Route.extend({
  init: function() {
    var thyself = this;
    var interval = setInterval(function(){
      thyself.my_reload()
    }, 1000);
    this.set('interval', interval);
    this.set('counter', {});
  },
  my_reload: function() {
    var counter = this.get('counter');
    if (counter >= 10) {
      clearInterval(this.get('interval'));
    }
    this.set('data', Ember.$.getJSON('/api/users/current'));
  }
});

Where can I place this information so it will be available on all routes? And how can I reload the information periodically?

I'm using ember-cli