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WMO Calendar
WMO, 2017-[...], 2021
Virtual First Meeting of the Joint Expert Team on Aircraft-Based Observing Systems (JET-ABO): Final report
This first meeting of the WMO Infrastructure Commission Joint Expert Team on Aircraft-Based Observing Systems (JET-ABO) was conducted virtually in three sessions over 8–10 December 2020.
Rules of Procedure for the Executive Council
These rules of procedure cover the Executive Council and the panels reporting to it (Scientific Advisory Panel, Climate Coordination Panel, Hydrological Coordination Panel, Panel of Experts on Polar and High-mountain Observations, Research and Services and Capacity Development Panel). Established in accordance with Regulation 3, they were adopted by the Executive Council under the authority of the Convention and of the General Regulations of the World Meteorological Organization.
Compendium on Tropical Meteorology for Aviation Purposes
This Compendium is intended for use by airport and airspace planners and designers, air traffic controllers and flight crew to improve their knowledge of the basic processes governing weather in the tropics as well as the detailed climate and weather of the individual regions in and adjacent to the tropics. This Compendium can also be used by operational and non-operational meteorologists, including aeronautical meteorological observers and forecasters, as well as meteorological training professionals as valuable reference material and a training aid.
WMO Greenhouse Gas Bulletin (GHG Bulletin) - No. 16: The State of Greenhouse Gases in the Atmosphere Based on Global Observations through 2019
This Bulletin represents the latest analysis of observations from the WMO GAW Programme. It shows globally averaged surface mole fractions for carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) and compares them with the mole fractions during the previous year and with the preindustrial levels. It also provides insights on the change in radiative forcing by long-lived GHGs (LLGHGs) and contribution of individual gases to this increase.
Aerodrome reports and forecasts : A Users’ Handbook to the Codes
This booklet is a simple guide to the aeronautical meteorological codes, METAR, SPECI and TAF, applicable on 5 November 2020, updated as a result of the alignment of the Technical Regulations (WMO-No. 49), Volume II – Meteorological Service for International Air Navigation, Parts I and II, with Amendment 79 to Annex 3 to the Convention on International Civil Aviation. It is aimed at a wide range of users such as pilots, flight dispatchers, air traffic control staff and meteorological observers at smaller aerodromes where sophisticated automated instruments are not available. Although the reade ...
Basic Documents, 2. Technical Regulations, Volume II – Meteorological Service for International Air Navigation
These Regulations are designed:
(a) To facilitate cooperation in meteorology and hydrology between Members;
(b) To meet, in the most effective manner, specific needs in the various fields of application of
meteorology and operational hydrology in the international sphere; and
(c) To ensure adequate uniformity and standardization in the practices and procedures
employed in achieving (a) and (b) above.
State of the Climate in Africa 2019
The State of the Climate in Africa 2019, report provides a snapshot of climate trends, observed high-impact events and associated risks and impacts on key sensitive sectors in Africa. The report also draws lessons on existing gaps in climate change action.
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