Reasonably accurate measurements are possible over a range of visibility extending from a few tens of metres to a few tens of kilometres. In most instances this is approximately equivalent to, but not the same as, visibility measured by the contrast of a distant object against its background.Ī typical visibility sensor used at synoptic observing stations applies the forward scattering characteristics of light to measure the extinction coefficient of a beam generated by a high intensity xenon strobe transmitter directed at a volume of air close to the sensor. Visibility sensors measure the meteorological optical range which is defined as the length of atmosphere over which a beam of light travels before its luminous flux is reduced to 5% of its original value. at airfields) the sensor acts as an aid in the estimation of visibility. At the smaller number of stations where there is still a human observer ( e.g. Today, most synoptic observing stations have sensors which provide a measurement of visibility where the station operates in fully automatic mode.

For the purposes of aviation the prevailing visibility should be reported.If the visibility varies from one direction to another, the lowest value should be reported.Visibility should be estimated at ground level where there is an uninterrupted view of the horizon.An object should not merely be seen but should be identifiable against the background as a specific object.Various rules have been established for how visibility should be judged: This will help ensure alignment with the EU’s own strategic communication plans and maximise impact.For a great many years meteorological visibility was estimated by the human observer judging the appearance of distant objects against a contrasting background, usually the sky. Partners should involve the EU in developing and implementing strategic communication activities, for example press engagement, events or production of audiovisual content. Visibility sensors measure the meteorological optical range which is defined as the length of atmosphere over which a beam of light travels before its. Key performance indicators can be quantitative or qualitative, and in a good monitoring system, both types of indicators complement each other. The guidance details the main elements that should be included in this plan.Įnsuring communication activities are data driven is critical to their success. You MUST use headlights when visibility is seriously reduced, generally when you. When strategic communication activities are foreseen as part of a specific programme or project, the implementing partner should produce a Strategic Communication Plan. This section covers driving with reduced visibility and rain. In these cases, communication should help ensure awareness, understanding and perception of the EU and its role in the world, in both the EU and partner countries and regions, is commensurate with the scale, scope and ambition of its sustained engagement. In certain cases, the EU may decide to finance communication actions on selected political priorities as part of a specific programme or project. Given that individual projects/programmes will not, in principle, include a dedicated visibility budget any costs necessary to ensure compliance with contractual visibility requirements should be factored into the budget foreseen for the relevant objectives and activities of the action. Any expenditure related to visibility is part of the action and can benefit from EU funding. As a rule, they always go hand in hand and must not be separated. Both the EU emblem and the funding statement are essential to acknowledge EU support. the greatest distance it is possible to see under given atmospheric conditions. The EU emblem should be accompanied by a funding statement (‘Funded by the European Union’ or ‘Co-funded by the European Union’) mentioning the EU’s support. the quality, state, or fact of being visible. Partners implementing Global Gateway projects/programmes should also include the Global Gateway logo in addition to the EU emblem. Apart from the emblem, no other visual identity or logo may be created or used to highlight EU support, unless previously agreed with the European Commission. The EU emblem is the single most important visual brand used to acknowledge the origin and ensure the visibility of EU funding. The visibility obligations apply equally, regardless of whether the actions concerned are implemented by the European Commission, through grants and procurement contracts, or partners through indirect management. Recipients of EU funding have a general obligation to acknowledge the origin and ensure the visibility of any EU funding received.