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GAW Report, 240. Report of the Second International UV Filter Radiometer Calibration Campaign UVC-II
The objective of the campaign was to provide a calibration traceable to the WCC-UV reference for all participating radiometers, in view of homogenizing UV measurements in all participating countries.
GAW Report, 239. Calibration Methods of GC-μECD for Atmospheric SF6 Measurements
SF6 is a substance which originates only from anthropogenic sources used primarily in the electricity and electronics supply industries, e.g. the semiconductor industry, where it is used as an electronic insulator due to its inertness. SF6 is a trace gas that exists in small quantities at the level of ppt (parts-per-trillion, 1/1012) in the atmosphere, but its global warming potential is 23,500 times greater than that of CO2 when compared over a 100-year period[1]. In particular, SF6 has an atmospheric lifetime of 3,200 years upon emission, and will eventually exacerbate the man-made greenhous ...
Guidance on Good Practices for Climate Services User Engagement : Expert Team on User Interface for Climate Services
This guidance document is primarily intended for the providers of climate services, in particular for National Meteorological and Hydrological Services, but will also be of use to other organizations involved in the development, delivery and use of climate services.
GAW Report, 235. Vegetation Fire and Smoke Pollution Warning and Advisory System (VFSP-WAS): Concept Note and Expert Recommendations
World Meteorological Organization (WMO) ; IBBI ; The Global Fire Monitoring Center (GFMC) - WMO, 2018This concept note contains the expert recommendations resulting from discussions at the international workshop on Forecasting Emissions from Vegetation Fires and their Impacts on Human Health and Security in South-East Asia, which was hosted by the Indonesian Agency for Meteorology, Climatology and Geophysics (BMKG), Jakarta, from 29 August to 1 September 2016. The workshop was organized by the World Meteorological Organization (WMO) and the Interdisciplinary Biomass Burning Initiative (IBBI) in collaboration with the United Nations Office for Disaster Reduction/International Wildfire Prepared ...
Step-by-step Guidelines for Establishing a National Framework for Climate Services
This document explains how to initiate and develop a functional NFCS that will serve as a key coordination mechanism to bring together the local, national, regional and global stakeholders needed for successful generation and delivery of co-designed and co-produced climate services with and for users, effectively linking climate knowledge with action on the ground at national and local levels.
Joint WMO/IOC Technical Commission for Oceanography and Marine Meteorology, Abridged Final Report of the Fifth Session
World Meteorological Organization (WMO) ; Intergovernmental Oceanographic Commission (IOC); United Nations Educational, Scientific and Cultural Organization (UNESCO) - WMO, 2018 (WMO-No. 1208)
Lesson and Group Exercise on Cloud Formation
Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) ; World Meteorological Organization (WMO) - WMO, 2018
General Summary on Climate Field Schools
Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) ; World Meteorological Organization (WMO) ; Sekolah Lapang Iklim - WMO, 2018The Climate Field School, CFS, is a program that has a goal to increase farmer's knowledge's and understandings on climate information's with a concept of learning by doing and learning by experiencing to reach a success in farming activity to support the increase in yields of agricultural sectors.
How to Conduct a Roving Seminar on weather and climate : training modules for rural producers and development technicians
This educational video describes the approach to implementing rovin seminars. Organized as part of the METAGRI project, roving seminars aim to increase the resilience of rural producers to climate change.
Lesson and Group Exercise on Rain Formation
World Meteorological Organization (WMO) ; Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) - WMO, 2018
GESAMP - Reports and Studies, 97. The magnitude and impacts of anthropogenic atmospheric nitrogen inputs to the ocean
World Meteorological Organization (WMO) ; Food and Agriculture Organization (FAO); United Nations Educational, Scientific and Cultural Organization (UNESCO); et al. - WMO, 2018The present global modelling study of the Nr atmospheric cycle and Nr deposition to the ocean is the first that evaluates past, present and future Nr atmospheric deposition accounting for ON primary sources as well as for secondary ON chemical formation as a N-dependent process. While the total Nr deposition to the ocean is not expected to change significantly by 2050, the relative importance of oxidized and reduced N is expected to change, with an increasing proportion of ammonium compared to nitrate, resulting from more efficient controls on terrestrial emissions of nitrogen oxides (NOx) com ...
SP, 12. Guidelines on Satellite Skills and Knowledge for Operational Meteorologists
This document describes the underpinning skills that support the WMO competencies that relate to the use of satellite data by operational meteorologists.
Guide to Climatological Practices
This publication is designed to provide Members of the World Meteorological Organization (WMO) with guidance and assistance in developing national activities linked to climate information and services.
Extreme Climate and Farmer Decision Game
Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) ; World Meteorological Organization (WMO) - WMO, 2018
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GCOS, 220. Report of the Tenth GCOS Reference Upper Air Network Implementation and Coordination Meeting (GRUAN ICM-10)
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2018
WMO Guidelines on Generating a Defined Set of National Climate Monitoring Products (WMO-No. 1204)
The aim of this publication is to provide a specification for the shortlist of NCMPs that can be produced consistently and easily by most countries. By having clearly defined NCMPs, it should be possible for countries with fewer resources to focus their efforts on a small number of products that have wide applicability and interest.
التحديات في الانتقال من الشبكات التقليدية إلى الشبكات الأوتوماتية لرصد الأحوال الجوية من أجل السجلات المناخية طويلة الأجل
نُشرت بالفعل (WMO, 2007) توجيهات لإدارة التغيرات في برامج رصد المناخ، مع مجموعة ممارسات موصى بها يمكن بواسطتها إدارة هذه التغيرات. وسينصب التركيز في هذه المذكرة التوجيهية على محطات الأرصاد الجوية الأوتوماتية (AWSs) التي يرجح أن تشكل جزءاً من السجلات المناخية طويلة الأمد. وستكون هذه السجلات عادة مملوكة للمرافق الوطنية للأرصاد الجوية والهيدرولوجيا (NMHSs) أو للوكالات المنتسبة لها، أو لأطراف أخرى أحياناً (من قبيل هيئات الطيران أو الزراعة أو النقل البري) في إطار المعايير التي تقرها المرافق الوطنية (NMHSs). وتثبت التجربة أن المحطات (AWSs) الخاصة يمكن أن تكون مفيدة لبعض الأغراض المناخية (مثل توفير م ...
Challenges in the Transition from Conventional to Automatic Meteorological Observing Networks for Long-term Climate Records
Guidelines for managing changes in climate observation programmes, with a set of recommended practices by which such changes can be managed, have already been published (WMO, 2007). This guidance note will focus on those AWSs likely to form part of long-term climate records. These will normally be owned by NMHSs or associated agencies, or sometimes by third parties (such as aviation, agriculture or road transport agencies) under standards endorsed by the NMHSs. Experience shows that private AWSs can be useful for some climate purposes (such as providing information on individual local-scale ex ...
WMO Greenhouse Gas Bulletin (GHG Bulletin) - No.13: The State of Greenhouse Gases in the Atmosphere Based on Global Observations through 2016
The latest analysis of observations from the WMO GAW Programme shows that globally averaged surface mole fractions(2) calculated from this in situ network for CO2, methane (CH4) and nitrous oxide (N2O) reached new highs in 2016, with CO2 at 403.3 ± 0.1 ppm, CH4 at 1 853 ± 2 ppb(3) and N2O at 328.9 ± 0.1 ppb. These values constitute, respectively, 145%, 257% and 122% of pre-industrial (before 1750) levels. The record increase of 3.3 ppm in CO2 from 2015 to 2016 was larger than the previous record increase, observed from 2012 to 2013, and the average growth rate over the last decade. The El Niño ...
WCDMP, 85. Ninth Seminar for Homogenization and Quality Control in Climatological Databases and Fourth Conference on Spatial Interpolation Techniques in Climatology and Meteorology
In this paper we try to summarize the main topics of homogenization, quality control and spatial interpolation.
GAW Report, 228. WMO Global Atmosphere Watch (GAW) Implementation Plan: 2016-2023
This Implementation Plan (IP) builds upon the growing importance of atmospheric composition observations and predictions, and focuses on research that enables a wide variety of Products and Services related to atmospheric composition. New GAW-lead thematic application areas will help reduce societal risks from climate change, high-impact weather and events, and urban air pollution, and support conventions and treaties focused on sustainable development. This IP is designed to help World Meteorological Organization (WMO) Members meet their needs and to support plans of national, regional, and i ...
Guide to the Direct Broadcast Network for Near-real-time Relay of Low Earth Orbit Satellite Data
The purpose of this Guide is to define the minimum technical specifications and procedures applicable to the Direct Broadcast Network for Near-real-time Relay of Low Earth Orbit Satellite Data (DBNet) and to provide guidance for implementing these specifications and procedures.
In the present Guide, the term “shall” is used when referring to the technical specifications and procedures that have to be applied for DBNet to work properly, and the term “should” when referring to those that would enhance the proper functioning of DBNet. The DBNet technical specifications are applica ...
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International Cloud Atlas Web edition
About the ICA site. Welcome to our new portal
Guide to the Implementation of Quality Management Systems for National Meteorological and Hydrological Services and Other Relevant Service Providers
The objective of this publication is to provide guidance to WMO Members on how to develop and implement a quality management system (QMS). The Guide details the steps required to obtain certification of compliance with the ISO standard ISO 9001:2015, Quality Management System – Requirements (ISO, 2015c)It also provides the steps for transition from ISO standard ISO 9001:2008 (ISO, 2008) to standard ISO 9001:2015 (ISO, 2015c). It is especially focused on WMO Member National Meteorological and Hydrological Services (NMHSs). However, it could be successfully utilized by other service providers, ...
Guidelines on the Role, Operation and Management of National Meteorological and Hydrological Services
These Guidelines are intended to provide a one-stop, consistent and contemporary reference resource from the World Meteorological Organization (WMO) for managers of National Meteorological and Hydrological Services (NMHSs). They should help with many of the challenges that directors and managers of NMHSs face, including:
– Ensuring that the NMHS is able to meet national needs for meteorological, hydrological and related data and services;
– Responding to newly identified challenges in a rapidly changing world;
– Clarifying and articulating the mandate of the NMHS;
– ...
IOM Report, 126. Quality Assessment using METEO-Cert : The MeteoSwiss Classification Procedure for Automatic Weather Stations
It this report, METEO-Cert and its application is described. The METEO-Cert process assigns qualitative flags to each station and its instruments. Those qualitative flags provide valuable information on the applicability of the measured data and help to identify potential improvement of the station’s exposure.
GCOS, 215. Report from 1st Meeting of the Task Team GCOS Upper Air Network (TT-GUAN-1)
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2017The meeting was opened with a welcome to all participants from Dr Franz Berger, Director of the Lindenberg Observatory.
Peter Thorne agreed to be the meeting chair and welcomed everyone to the meeting.
Tim Oakley, GCOS Secretariat, welcomed everyone on behalf of WMO and GCOS, introduced Caterina Tassone and Valentin Aich from the GCOS Secretariat and thanked all participants for taking the time to attend the meeting and take an active role in this Task Team.
All other members of the task team introduced themselves. The list of participants can be found in Annex 5.
GCOS, 214. Report of the 1st Meeting of the GCOS Surface Reference Network (GSRN) Task Team
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2017The meeting was opened with a welcome to all participants from Prof. Ray O’Neill, Vice-President of Research and Innovation of the University of Maynooth, Ireland. Caterina Tassone, GCOS Secretariat, introduced Tim Oakley, from GCOS Secretariat and Howard Diamond, Chairman of the Task Team. All other members of the task team introduced themselves. The list of participants can be found in Annex 11. The agenda (Annex 1) was adopted.
GCOS, 212. Report for 1st Meeting of GCOS/CCl Task Team on the use of Weather radar for Climate Studies
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2017The first meeting of the AOPC task team on the use of weather radar for climate studies, was held at FMI, Helsinki, from August 30th to August 31st 2017. The meeting is hosted by Elena Saltikoff (FMI-Finland), chairperson of the Task Team. Bernard Urban (Météo-France-France) participates as radar expert, Rainer Hollman (DWD-Germany) as AOPC representative, Caterina Tassone for GCOS secretariat. Also present in the first part of the meeting are Aku Riihela and Terhikki Manninen from SCOPE-CM.
GCOS, 211. Report of the Ninth GCOS Reference Upper Air Network Implementation and Coordination Meeting (GRUAN ICM-9)
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2017The 9th GRUAN Implementation and Coordination Meeting (ICM-9) was hosted by the Finnish Mete-orological Institute (FMI) from 12 to 16 June 2017 in Helsinki, Finland. It benefitted from support by the local hosts, NOAA, and from the NOAA US GCOS office. The meeting included:
• A special session on Arctic research relevant to GRUAN.
• A special session dedicated to management of the change from RS92 radiosondes to alterna-tive sondes.
• An optional visit to the Vaisala factory outside Helsinki.
• A break-out session on GAIA-CLIM outreach.
• An optional MeteoMet ...
GCOS, 210. Report of the twenty-fifth session of the WMO-IOC-UNEP-ICSU Steering Committee for GCOS
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2017
GCOS, 209. 19th Session of the GCOS /WCRP Terrestrial Observation Panel for Climate (TOPC-19)
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2017"This meeting [had] to consider its work plan which [included]
• A status report or similar in 4 years and update of IP in 5 years;
• Reviewing the performance of ECV observations and progress on actions in the implementation plan;
• Consideration of Adaptation Needs -> what does it mean for panel/observations;
• The proposal for Evaporation/Latent Heat Flux.
During the discussion it was stressed that the new work cycle of the TOPC after the release of the GCOS implementation plan will be challenging particularly because adaptation and mitigation will become ...
GCOS, 207. 22nd Session of the GCOS/WCRP Atmospheric Observation Panel for Climate (AOPC-22)
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2017
GCOS, 206. Indicators of Climate Change Outcome of a meeting held at WMO 3 February 2017
World Meteorological Organization (WMO) ; United Nations Educational, Scientific and Cultural Organization (UNESCO); Intergovernmental Oceanographic Commission (IOC); et al. - WMO, 2017
A Proposed Long Term Resource Plan for Climate Data Management and Rescue Activities
In response to WMO’s Executive Council’s decision at its sixty-eighth session, June 2016 (Decision 39 (EC-68)) this paper presents a proposed resource plan for the sustainable support of climate data management systems (CDMS) and data rescue activities (the Plan). The initial focus in this Plan is on undertaking or supporting climate data rescue and CDMS implementation over the next five years, in developing and least-developed countries (D & LDC) that have recently expressed their need for assistance with securing and managing their data. Most of these countries are in Regions I, V and the In ...
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Clouds Timelaps
Mammatus clouds over his house in Germantown, MD
Seasonal Forecast Course Package T.O.P.: Theory and Operational Principles
Institute of Biometeorology (IBIMET) ; World Meteorological Organization (WMO) - CNR-National Research Council"Seasonal Forecast Course Package T.O.P." is a set of online resources whose goal is to enhance knowledge in the theory of seasonal forecasting and operational use of seasonal climate forecasts. The course package has two audiences. The first is training institutions, to facilitate development of additional training courses. The materials and documentations here collected represent the building blocks of a course based on validated contents and user needs. It can also be used by national hydro-meteorological service staff members who wish to improve their climate services competencies or to sp ...
Good practice guidelines for water data management policy : world water data initiative
Bureau of Meteorology ; World Meteorological Organization (WMO) - Australian Bureau of Meteorology, 2017These guidelines acknowledge that it is difficult to gather support for and then prosecute actions that are disruptive to the status quo and requiring considerable public investment. It is stressed that planning the water data reform journey is every bit as challenging as implementing the reforms themselves. Accordingly, these guidelines conclude with a recommended series of steps to get started in reforming water data management arrangements. Guidance is provided for (1) taking stock of current policy settings, (2) preparing the case for reform, (3) positioning for effective implementation an ...
ETR, 21. Status of Human Resources in National Meteorological and Hydrological Services
The current survey conducted from 2016 to 2017 focused on Human Resource Status of NMHSs, particularly as relates to staff situation by age bracket, gender, and professionals, together with training expectations in 2017, training priority areas, and status of the strategic plans of NMHSs. The report is presented in three chapters. The first chapter provides an introduction and some major findings of the survey. The second chapter provides the details of the results of the survey and the third chapter provides conclusions. The results of this survey provide insight into the state of human resou ...
AeM Series, 01. Outcomes of the 2016-2017 Global Survey on Aeronautical Meteorological Service Provision : WMO Commission for Aeronautical Meteorology. Full report
A global survey of aeronautical meteorological service provision was conducted by the Commission for Aeronautical Meteorology (CAeM) between November 2016 and February 2017.
The primary objective of the survey was to establish a comprehensive, consolidated global view on the existing institutional arrangements for the provision of meteorological services to international air navigation, particularly at a national level, taking into account the supporting ICAO and WMO regulatory frameworks.
WMO Guidelines on the Calculation of Climate Normals
The focus of this document is on observations at surface meteorological observing stations. However, many of the principles will also be valid for other forms of observations, including upper-air observations and datasets based on mobile or remotely sensed platforms (for example, satellites, radar or drifting buoys). In particular, as many key remotely sensed datasets begin in the 1970s, it is recommended that, where feasible, the current climatological standard normal period (1981–2010 at the time of writing) be used for these datasets to allow comparison among different data forms on a consi ...
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Marine Seminar: WMO and UNESCO/IOC
On Wednesday May 3 from 10am to 12.30 in the WMO Press Room, there will be a Marine Seminar by both WMO and visiting staff from UNESCO’s Intergovernmental Oceanographic Commission (IOC).
The Seminar will be chance for exchange of information and discussion between the two agencies, as outlined in the attached programme. From the UNESCO-IOC, Dr Albert Fischer, Dr Salvatore Arico and Dr Thorkild Aarup will share information about IOC programs relevant for WMO, and vice versa, WMO staff will share information on their marine work here.
UNESCO IOC is an important part ...
2017 WMO Aeronautical Meteorology Scientific Conference (AeroMetSci 2017)
The objective of the AeroMetSci conference is to provide a forum where representatives of the research community, service providers, users of aeronautical and meteorological information and services will have the opportunity to discuss the needs for science and research in support of the current and future aviation transport.
Guidelines for Nowcasting Techniques
The purpose of the WMO nowcasting guidelines presented here is to help National Meteorological and Hydrological Services (NMHSs) by providing them with information and knowledge on how to implement a nowcasting system with the resources available to them and an understanding of the current state of science and technology.
Handbook on Use of Radio Spectrum for Meteorology : Weather, Water and Climate Monitoring and Prediction
World Meteorological Organization (WMO) ; International Telecommunication Union (ITU) - WMO, 2017 (WMO-No. 1197)The Handbook provides comprehensive technical and operational information on current observation applications and systems and on the use of radio frequencies by meteorological systems, including meteorological satellites, radiosondes, weather radars, wind profiler radars and spaceborne remote sensing instruments. It is intended for the meteorological (i.e. weather, water and climate) and radiocommunication communities, including governmental institutions, industry as well as the general public.
Commission for Basic Systems Open Programme Area Group on Integrated Observing Systems, Expert Team on Aircraft-Based Observing Systems: final report
This meeting was a particularly important one for the expert team, being the first opportunity to openly and formally discuss the possible future collaboration between WMO and the International Air Transport Association (IATA) on the operation of the AMDAR programme. While the discussion raised a number of issues to be subsequently addressed, the team welcomed and fully endorsed the establishment of the IATA-WMO Working Arrangement that had been approved by the 69th session of the WMO Executive Council and agreed to undertake to work with IATA on the development of the proposed Concept of Oper ...
Commission for Instruments and Methods of Observations Open Programme Area Group on Remote-Sensing Technologies - Inter-Programme Expert Team on Operational Weather Radars : final report
The First Session of the Commission for Instruments and Methods of Observations (CIMO), Inter-Programme Expert Team on Operational Weather Radars (IPET-OWR) was held over 13 to 16 March, 2017, at the Japan Meteorological Agency (JMA) headquarters in Tokyo, Japan. The session was kindly hosted by JMA and generously supported by Japan. The meeting was opened by the Director-General of the Japan Meteorological Agency, Dr Toshihiko Hashida, who highlighted Japan’s ongoing engagement in international operational weather radar activities, collaboration and capacity development. The session was chair ...
White Paper on the Contribution of the Global Framework for Climate Services to Transforming our World: the 2030 Agenda for Sustainable Development (Agenda 2030)
Transforming our world: the 2030 Agenda for Sustainable Development (Agenda 2030) is a plan of action for people, the planet and prosperity, which seeks to strengthen universal peace in greater freedom. The Sustainable Development Goals (SDGs) identified under Agenda 2030 provide a universal, transformative and integrated ambition that will provide an aligned pathway for the activities of UN Members, international organizations within and beyond the UN system, as well as the entire sphere of entities and individuals having a stake in sustainable development.
Energy Exemplar to the User Interface Platform of the Global Framework for Climate Services
The goal of this Exemplar is to illustrate how the development and application of targeted climate products and services through the Global Framework for Climate Services (GFCS) can advance efforts to better integrate climate information into the planning and operations of the energy sector. This will enable improved sustainability, resilience and efficiency of energy systems under ever-changing weather and climate conditions.
Priority Needs for the Operationalization of the Global Framework for Climate Services (2016–2018)
The global community is rapidly putting in place measures to protect societies from adverse socioeconomic and environmental impacts caused by extreme weather-, climate- and water-related events, and also to take maximum advantage of any positive benefits of these changes that may exist. However, many projects are being undertaken in isolation, in the absence of mechanisms for alignment of the diverse efforts being made at project level, and without conforming to relevant international standards. This can result in duplication of efforts, which may prove unsustainable or ineffective in the long ...
Guidelines on Best Practices for Achieving User Readiness for New Meteorological Satellites
The current publication presents, in an integrated manner, best practices for user-readiness projects performed by user organizations (for example, NMHSs) as well as for satellite development programmes in support of user readiness. Definitions of and a timeline for deliverables are presented that should be made available by the satellite development programmes to user-readiness projects. The best practices documented here therefore apply to both user organizations (section 3) and satellite operators (section 5). The primary audiences for this publication are Members of the Coordination Group ...
A Disaster Risk Reduction Roadmap for the World Meteorological Organization : final draft (version 2.1), 31 March 2017
The Roadmap is first and foremost a document that can be used by both WMO Members, partners and users to understand how NMHSs in partnership with other agencies contribute to increasing the resilience of communities, nations, regions, and the world under the above-mentioned frameworks, through a coordinated WMO-wide plan of action on DRR. It is hoped that this Roadmap will guide the Organization, in particular the NMHSs as well as key partners, in the development of its strategic and operating plans that fully take into account the contributions of the WMO community to all components and phase ...
WWRP, 2016-4. Catalysing Innovation in Weather Science: WWRP Implementation Plan 2016-2023
Weather-related disasters pose a major threat to society, the environment and the economy. As the vulnerability to weather related hazards increases due to climate change, growing population, urbanization and other factors it is imperative to coordinate weather research targeted towards improving forecasts and warnings at international level. The impacts resulting from the underpinning hydro-meteorological events such as heat waves, droughts, floods, landslides, wind storms, landfalling tropical cyclones or severe convective storms are regional or local in nature. Many of these disasters, howe ...
Driving Innovation Together: The World Weather Research Programme
In view of the increasing pressure on water resources, National Hydrological Services (NHSs) worldwide are faced with the challenge to deliver hydrological services of high quality, timeliness and proven credibility, to assist the decision making process of water and natural resources managers. Nowadays, it is commonly expected that these services must be based on information that includes an accurate assessment of its uncertainty. Stream discharge, the basic hydrological variable, is no exception, yet most measurements are still reported as a value without any information on its associated un ...
WMO Statement on the state of the global climate in 2016
This latest report confirms that 2016 was the warmest year on record: a remarkable 1.1 °C above the pre-industrial period, which is 0.06 °C above the previous record set in 2015. This increase in global temperature is consistent with other changes in the climate system. Globally averaged sea-surface temperatures were also the warmest on record; global sea levels continued to rise; and Arctic sea-ice extent was well below average for most of the year.
Guide to the Management and Operation of WMO Regional Training Centres and Other Training Institutions
This publication responds to the recommendations made in the review of the future roles and operation of RTCs, which was carried out by the Executive Council Panel of Experts on Education and Training from 2012 to 2014. The review and recommendations were approved by the WMO Executive Council at its sixty-sixth session in 2014. The review underlined the importance and usefulness of the RTCs to WMO Members. However, it also noted that, for Members to get even more value from such centres, the criteria for designation and reconfirmation of RTCs needed to be improved and that Directors of RTCs wo ...
Guidelines for the Assessment of Uncertainty for Hydrometric Measurement
In view of the increasing pressure on water resources, National Hydrological Services (NHSs) worldwide are faced with the challenge to deliver hydrological services of high quality, timeliness and proven credibility, to assist the decision making process of water and natural resources managers. Nowadays, it is commonly expected that these services must be based on information that includes an accurate assessment of its uncertainty. Stream discharge, the basic hydrological variable, is no exception, yet most measurements are still reported as a value without any information on its associated un ...
A career in meteorology
This book is a brief introduction to a career in meteorology. For more information about qualifications, training and opportunities, you are invited to consult your career adviser or your local or national weather service.
International Cloud Atlas: Manual on the Observation of Clouds and Other Meteors
This Atlas describes the classification system for clouds and meteorological phenomena used by all WMO Members. The classifications also describe meteorological meteors other than clouds – hydrometeors, lithometeors, photometeors, and electrometeors.
The Atlas provides a common language to communicate cloud observations, and ensures consistency in reporting by observers around the world. It serves as a training tool for meteorologists, as well as for those working in aeronautical and maritime environments, and it has become popular with weather enthusiasts and cloud spotters.
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World Meteorological Day 2017 highlights
World Meteorological Day 2017 highlights
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