Colour state other than clouds or low visibility (e.g. ice or other obstructions) then the word BLACK is written in full and placed immediately before the actual colour state (e.g. BLACKWHT). The colour state may be appended to a METAR report. A short period forecast called a "TREND" which covers the following two hours from the observation may also be added, often with reference to the colour state. The following criteria are used to determine the colour state: Colour state Colour states is a system used for quickly showing meteorological conditions. Meteorological colour states are determined by the relevant worst condition from
Ministerial Conference on the Protection of Forests in Europe forestry related issues. Between Ministerial Conferences the FOREST EUROPE process works through different follow up mechanisms (see following points). The Expert Level Meeting (ELM) is the FOREST EUROPE decision-making body between the Ministerial Conferences. Delegates from the signatory countries, the observer countries and observer organizations of the FOREST EUROPE process gather in these Expert Level Meetings to take decisions on the implementation of the resolutions and commitments taken during the Ministerial Conferences, as well as the preparations of upcoming Conferences. The ELM meets once or twice a year depending on its needs. The Round Table Meetings are a platform for