The　global　Earth　Science　Systems　(ESS)　cooperation　requires　both　flexible　and　interoperable　Web　Service　support　built　on　large　varieties　of　Earth　Observation　archives.　Given　the　complexity　and　dynamics　of　each　observation　and　the　large　number　of　disciplines　involved,　Open　GIS　Consortium　(OGC)　proposed　a　modular　standardization　approach　to　facilitate　ESS　data　retrieval　and　analytics.　Its　latest　Web　Coverage　Service　(WCS)　2.0　standard　follows　the　approach　and　presents　as　an　entry　point　to　build　ESS　information　exchange　blocks　for　the　improvement　of　global　Earth　Science　Systems　cooperation　in　the　coming　Big　Data　Era.　©　2015　IEEE.