European Environment Agency
Full INSPIRE Annex II & III data specifications can be found here.
Data Specification on Area management/restriction/regulation zones and reporting units – Draft Technical Guidelines
Data Specification on Environmental monitoring Facilities – Draft Technical Guidelines
Data Specification on Atmospheric Conditions – Meteorological geographical features
INSPIRE Generic Conceptual Model
Draft Guidelines for the use of Observations & Measurements and Sensor Web Enablement – related standards in INSPIRE Annex II and III data specification development