193 member states and territories. WMO Strategic Plan Disaster risk reduction The Global Framework for Climate Services (GFCS) The WMO Integrated Global Observing System (WIGOS) Aviation meteorological services Polar and high mountain regions Capacity development Governance Meteorological codes In keeping with its mandate to promote the standardization of meteorological observations, the WMO maintains numerous code forms for the representation and exchange of meteorological, oceanographical, and hydrological data. The traditional code forms, such as SYNOP, CLIMAT and TEMP, are character-based and their coding is position-based. Newer WMO code forms are designed for portability, extensibility and universality. These are BUFR, CREX, and, for gridded geo-positioned data, GRIB. Recognitions received In 2007, the Intergovernmental Panel on Climate Change (IPCC), a joint creation of the WMO and the United Nations Environment Programme (UNEP), received the Nobel Peace Prize "for their efforts to build up and disseminate greater knowledge about anthropogenic (man-made) climate change, and to lay the foundations for the measures that are needed to counteract such change." World Meteorological Day The World Meteorological Day is held annually on 23 March. Use of the International System of Units WMO states that "the International System of Units (SI) should be used as the system of units for the evaluation of meteorological elements included in reports for international exchange." The following units, which include units which are not SI units, are recommended by the WMO for meteorological observations: Degrees Celsius (°C) for temperature, or alternatively Kelvin (K). Metres per second (m/s) for wind speed. Degrees clockwise from north (°) for wind direction, or alternatively on the scale 0-36, where 36 is the wind directly from north and 09 is the directly wind from east. Hectopascals (hPa) for atmospheric pressure. Percent (%) for relative humidity. Millimetres (mm) for precipitation (or the equivalent unit kilograms per square metre (kg/m2)) Millimetres (mm) for evaporation. Millimetres per hour (mm/h) for precipitation intensity, or alternatively kilograms per square metre per second (kg m-2 s-1) Hours (h) for sunshine duration. Metres (m) for visibility. Metres (m) for cloud height. Standard geopotential metre (m') for geopotential height. Kilograms per square metre (kg/m2) for snow water equivalent. Watts per square metre (W/m2) for irradiance. Joules per square metre (J/m2) for radiant exposure. Oktas for cloud cover. Main public outreach materials The World Meteorological Organization at a Glance WMO Public website WMO for Youth WMO Bulletin (twice annually) WMO Greenhouse Gas Bulletin (annually) WMO Statements