 |
| Spanish | English |
| año de base | emissions base year |
| año de base | base year |
| Año Europeo del Medio Ambiente | European Year of the Environment |
| Año Internacional de las Montañas | International Year of Mountains |
| año o período histórico de base | historical base year or period |
| estación del año | season One of the four equal periods into which the year is divided by the equinoxes and solstices, resulting from the apparent movement of the sun north and south of the equator during the course of the earth's orbit around it. These periods (spring, summer, autumn and winter) have their characteristic weather conditions in different regions, and occur at opposite times of the year in the N and S hemispheres |
| Grupo de trabajo sobre el año del medio ambiente | Working Party on the Year of the Environment |
| Programa de Acción para el Año Europeo del Medio Ambiente1987 | Action programme for the European y ear of the environment 1987 |