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Vision and Strategy for Hydrology and Associated Plan of Action and WMO Hydrological Research Strategy (WMO-No. 1319)
This document contains the version of the WMO Vision and Strategy for Hydrology approved by Congress at its extraordinary session in 2021 (Resolution 4 (Cg-Ext(2021)) – WMO Vision and Strategy for Hydrology and its associated Plan of Action). It also contains the WMO Research Strategy for Hydrology approved in the same Congress through Resolution 5 (Cg-Ext(2021) – Advanced implementation of elements of the Plan of Action for Hydrology). The publication is complemented by the online version of the Plan of Action, which can be consulted here: WMO Plan of Action for Hydrology 2022-2030 (hydroref. ...
AeM Series, 08. Proceedings of the Eighth International Workshop on Volcanic Ash (AEM Series No. 8)
The Eighth International Workshop on Volcanic Ash (IWVA-8) was held in Rotorua, New Zealand on 4 and 5 February 2023. Its purpose was to demonstrate the worldwide progress made in supporting the scientific and technological advancement within the international airways volcano watch (IAVW) over the past 10 years or more and to highlight where gaps and other limitations in capacity and capability still prevail. The IAVW is a worldwide system comprising meteorological, volcanological, geological and other facilities and services supporting continued safe and efficient aviation operations whenever ...
State of the Global Climate 2022 (WMO-No. 1316)
The publication provides a summary on the state of the climate indicators in 2022 including global temperatures trends and its distribution around the globe; most recent finding on Green House Gases concentration, Ocean indicators; Cryosphere with a particular emphasis on Arctic and Antarctic sea ice, greenland ice sheet and glaciers and snow cover; Stratospheric Ozone; analysis of major drivers of inter-annual climate variability during the year including the El Niño Souther Oscillation and other Ocean and Atmshperic indices; global precipitation distribution over land; extreme events includi ...
TCP, 30. Regional Association IV – Hurricane Operational Plan for North America, Central America and the Caribbean (WMO-No. 1163), TCP-30
The regional activities under the WMO Tropical Cyclone Programme consist mainly of the programmes pursued by groups of countries acting in concert to improve their warning systems. In Region IV (North America, Central America and the Caribbean) there is a long history of collective action specifically designed to protect people and property from the severe tropical cyclones which are called hurricanes in the Region. A working group, known as the RA IV Hurricane Committee, was established by the seventh session of Regional Association IV (Mexico City, April May 1977) to promote such activities ...
GAW Report, 280. Fifth WMO Filter Radiometer Comparison (FRC-V) 27 September to 25 October 2021 Davos, Switzerland (GAW 280)
World Meteorological Organization (WMO) ; Stelios Kazadzis, Natalia Kouremeti, Julian Gröbner - WMO, 2023The Fifth Filter Radiometer Comparison (FRC-V) was held with one year of delay due to COVID-19 pandemic and relative restrictions, concurrently with the 13th International Pyrheliometer Comparison in Davos, Switzerland. Instrumentation belonging to different AOD global networks were invited and participated. Also, three reference instruments from the Calibration of Aerosol Remote Sensing (CARS) of the pan-European research infrastructure ACTRIS (Aerosol, Clouds and Trace Gases Research Infrastructure) facility participated. The comparison took place at the premises of PMOD/WRC from September 2 ...
Report of the Third High-Level session of the Open Consultative Platform (OCP-HL-3) - 20 June 2022
The Third High-Level Session of the OCP (OCP-HL-3) was held on 20 June 2022. The discussions included the Launch of White Paper #2 "Future of National Meteorological or Hydrometeorological Services - Evolving Roles and Responsibilities, and three topics: (1) Operating models and environment, (2) Legislative/institutional framework and (3) Human resources, Permanent Representatives' role and glbal and regional cooperation. This report summarizes the main perspectives and recommendations arising at the OCP-HL-3 discussions. The report will be used as a reference by all the stakeholders in global ...
GCOS, 252. 30th Session of the GCOS Steering Committee
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2023
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AeM Series, 07. Outcomes of the 2021 Global Survey on Gender Equality in Aeronautical Meteorology
The 2021 global survey on gender equality in aeronautical meteorology was conducted by the Standing Committee on Services for Aviation (SC-AVI) between June and August 2021. The objective of the survey was to collate information on respondents’ experience regarding gender equality and empowerment of women in the aeronautical meteorology domain, particularly at the national level. The survey also sought to obtain additional insight on the policies, action plans and/or guidelines pertaining to gender equality in aeronautical meteorology that may exist in the workplace.
The most salient in ...
Integrated Weather and Climate Services in Support of Net Zero Energy Transition (WMO-No. 1312)
The document is an update of the Global Framework for Climate Services (GFCS) “Energy Exemplar” and was compiled under the aegis of the WMO Study Group for Integrated Energy Services (SG-ENE ), part of the Commission for weather, climate, water and related environmental services and applications (SERCOM), with contributions from some of the leading experts in the field. The document provides the background and guidelines required to strengthen the development, and enable a widespread uptake, of integrated Weather & Climate Services (W&CSs) for the Energy sector needed to accelerate the transit ...
IOM Report, 141. Report on the 3rd WMO International Pyrgeometer Intercomparison (IPgC-III) (27 September-15 October 2021, Davos, Switzerland)
This report presents the results of the thirdInternational Pyrgeometer Intercomparison (IPgC-III) that was organized by the Physikalisch-Meteorologisches Observatorium Davos/World Radiation Centre (PMOD/WRC) in Davos, Switzerland,from 27 September to 15 October 2021. IPgC-III demonstrated the stability of the WISG and enabledthe calibration of a large number of instruments. It has been shown that there is an apparent offsetbetween the WISG and the International System of Units (SI) and that recent technologicaldevelopments enable to significantly reduce the uncertainties of potential new refer ...
IOM Report, 140. Report on the WMO International Pyrheliometer Comparison (IPC-XIII) (27 September-15 October 2021, Davos, Switzerland)
This report summarizes the outcomes of the 13thWMO International Pyrheliometer Comparison (IPC-XIII) and demonstrates the stability of the WRR inproviding a worldwide metrological reference. Favourable weather conditions enabled acquisition of alarge number of the calibration points, what increased confidence in the traceability dissemination. Onthe days without weather conditions appropriate to take the measurements, a symposium on radiationmeasurement was organized. Many presentations delivered at the symposium facilitated theexperience exchange and knowledge transfer.
GCOS, 249. Second GCOS Climate Observation Conference (GCOS 249)
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2023
GCOS, 251. 25nd Session of the Ocean Observations Panel for Physics and Climate (OOPC-25) (GCOS-251)
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2023
Guidance on Measuring, Modelling and Monitoring the Canopy Layer Urban Heat Island (CL‑UHI) (WMO-No. 1292)
The guidance provides an overview of and recommendations for measuring, modelling and monitoring the Canopy Layer urban heat island, which is based on temperature information at about 1.5 m above ground. Canopy Layer urban heat island information is one component of the integrated urban hydro-meteorological, climate and environmental services for citizens. These services may be provided directly by National Meteorological and Hydrometeorological Service (NMHS) operations, in cooperation with stakeholders or partners, or indirectly through stakeholders or partners in cities, public and private ...
Guidelines on the Definition and Characterization of Extreme Weather and Climate Events (WMO-No. 1310)
The guidance in this publication consists of generic definitions and methodologies for the characterization of extreme weather and climate events. This publication contribute to ensuring consistent exchange of information that underpins the WMO State of the Climate Reports, Climate Watches, climate change studies and other emerging applications.
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