The Meteor API is a high level wrapper around an AtmosphereHandler and targeted at Servlet based applications. A Meteor uses a special implementation of the AtmosphereHandler API called ReflectorServletProcessor to deliver Atmosphere's events via a single and unified Meteor API.
You can retrieve Meteor, from any Servlet based implementation, simply by doing:
Meteor m = Meteor.build(httpServletRequest);
You can suspend, resume and broadcast from a Meteor and also attach events listeners. See this document for a Meteor introduction.