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Programme mondial de recherche sur la prévision du temps: perspectives pour les 10 prochaines années
La prévision du temps a fait des progrès immenses grâce à la recherche et aux avancées réalisées dans les domaines des télécommunications, des technologies de l’information et des infrastructures d’observation. Les limites des capacités de prévision dépassent désormais les 10 jours dans certains cas, et on arrive de plus en plus souvent à diff user, plusieurs jours à l’avance, des alertes précoces concernant les phénomènes météorologiques extrêmes. Les méthodes de prévision d’ensemble fournissent régulièrement des informations sur la probabilité d’événements particuliers et jouent un rôle clé ...
[article]Programme mondial de recherche sur la prévision du temps: perspectives pour les 10 prochaines années
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Gilbert Brunet ; Thomas Jung ; Neil Gordon ; Frédéric Vitart ; Andrew W. Robertson
in Bulletin > Vol. 64(1) (2015) . - p.16-19La prévision du temps a fait des progrès immenses grâce à la recherche et aux avancées réalisées dans les domaines des télécommunications, des technologies de l’information et des infrastructures d’observation. Les limites des capacités de prévision dépassent désormais les 10 jours dans certains cas, et on arrive de plus en plus souvent à diff user, plusieurs jours à l’avance, des alertes précoces concernant les phénomènes météorologiques extrêmes. Les méthodes de prévision d’ensemble fournissent régulièrement des informations sur la probabilité d’événements particuliers et jouent un rôle clé dans de nombreux systèmes de prise de décisions. Du fait notamment de ces avancées, les besoins des utilisateurs des services météorologiques se sont simultanément diversifi és et comprennent désormais les prévisions «environnementales» – par exemple prévisions de la qualité de l’air et prévisions hydrologiques.123456789
Language(s): French; Other Languages: English, Russian, Spanish
Format: Digital (Free), Hard copyTags: World Weather Watch (WWW) Programme ; Capacity development
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WIGOS Technical Report, 2016-01. AMDAR Benefits to the Air Transport Industry
This report describes and documents the benefits that the Air Transport Industry (ATI) gains from increased forecast accuracy achieved through the daily collection of atmospheric data gathered by approximately 4,000 inflight commercial aircraft. The report also outlines the Aircraft Meteorological DAta Relay (AMDAR) observing system, the forecast process and describes the importance that AMDAR data plays in numerical weather prediction (NWP).
Measuring the benefits to the ATI requires first to describe and to quantify the improved weather forecast accuracies due solely to the assimilat ...
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Available online: Full text
Published by: WMO ; 2016
This report describes and documents the benefits that the Air Transport Industry (ATI) gains from increased forecast accuracy achieved through the daily collection of atmospheric data gathered by approximately 4,000 inflight commercial aircraft. The report also outlines the Aircraft Meteorological DAta Relay (AMDAR) observing system, the forecast process and describes the importance that AMDAR data plays in numerical weather prediction (NWP).
Measuring the benefits to the ATI requires first to describe and to quantify the improved weather forecast accuracies due solely to the assimilation of the AMDAR data into NWP and its availability to meteorologists. The effects and impacts of the resulting improved forecasts are categorized according to their characteristics (linear1, threshold, etc.) and in relation with each operational activity performed by each ATI sector and function.
For the airlines, we can clearly quantify the benefits of more accurate wind forecasts especially on the fuel burn calculation and fuel load made prior to flight. The impacts during flights and for the other operational activities are more difficult to model. Statistical data for each operational decision derived from better forecast accuracy would be needed to make such assessments. These ‘relational’ statistics are less likely to be documented and much more complex to evaluate. Indeed complex weather phenomena (like convective storms, icing, fog, etc.) are the primary disruptive sources to ATI operations and their prediction certainly is improved with the availability of AMDAR data. However, we are able to leverage a modeling method which relates the Weather Impact Traffic Index (WITI) and the Forecast Accuracy Index (WITI-FA) to calculate an economic impact accounting for the significant role that AMDAR plays in increasing weather forecast accuracy. For other operational activities and aspects of the ATI, there is considerable and well-justified subjective evidence and testimony of the positive impact and value of AMDAR data.
The report therefore provides strong quantitative and ample qualitative evidence of significant benefits and costs savings to be gained from ATI support and participation in the WMO AMDAR Program.Collection(s) and Series: WIGOS Technical Report- No. 2016-01
Language(s): English
Format: Digital (Free)Tags: Observations ; Text/ Reading ; WMO Integrated Global Observing System (WIGOS) ; Global Space-based Inter-Calibration System (GSICS) ; Automated Weather Observing System (AWOS) ; Aircraft Meteorological Data Relay (AMDAR) ; Numerical weather prediction ; OBS - Personnel managing observing programmes and networks ; OBS - Personnel performing meteorological observations ; Instruments and Methods of Observation Programme (IMOP)
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Available online: Full text
Published by: WMO ; 2016
Collection(s) and Series: GCOS- No. 203
Language(s): English
Format: Digital (Free)Tags: Capacity development ; Global Climate Observing System (GCOS) ; Commission for Basic Systems (CBS)
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IOM Report, 125. WMO Technical Conference on Meteorological and Environmental Instruments and Methods of Observation (CIMO TECO 2016) : Ensuring sustained high-quality meteorological observations from sea, land and upper atmosphere in a changing world
WMO Technical Conference on Meteorological and Environmental Instruments and Methods of Observation (CIMO TECO 2016): Ensuring sustained high-quality meteorological observations from sea, land and upper atmosphere in a changing world
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Published by: WMO ; 2016
Notes: Please, extract the compressed folder before browsing the links from the main PDF document.
Different sessions are available to download separately: Opening session, Session 1, Session 2, Session 3, Session 4, Special session, Discussion session.Collection(s) and Series: IOM Report- No. 125
Language(s): English
Format: Digital (Free)Tags: Instruments and Methods of Observation Programme (IMOP) ; CIMO TECO 2016
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IOM Report, 124. International Pyrheliometer Comparison (IPC-XII) : 28. Sep - 16. Oct 2015, Davos, Switzerland
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Available online: Full text
Published by: WMO ; 2016
Collection(s) and Series: IOM Report- No. 124
Language(s): English
Format: Digital (Free)Tags: Pyrheliometer ; Instruments and Methods of Observation Programme (IMOP)
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IOM Report, 123. Currently Developing and Future Communications and Technology Impact on AMDAR
This document has been prepared in the frame of WMO study SSA-2604-14/REM/PEX, for which the objective is to assess currently developing and future communications and technology impacts on AMDAR.
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Commission des systèmes de base - Seizième session : Rapport final abrégé, résolutions et recommandations
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Commission for Basic Systems (CBS) - Sixteenth session : Abridged final report with resolutions, decisions and recommendations
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Commission for Basic Systems OPAG on Integrated Observing Systems - Implementation/coordination Team on Integrated Observing Systems (ICT-IOS), Ninth session : final report
The Ninth Session of the CBS, Open Programme Area Group on Integrated Observing Systems (OPAG-IOS), Implementation-Coordination Team on Integrated Observing System (ICT-IOS) was held in Geneva, Switzerland at the headquarters of WMO over 18-21 April 2016. The primary focus of this team meeting was for the various expert teams and rapporteurs to provide their reports of progress on their work plans and activities over the inter-sessional period to the session and for the ICT-IOS to formulate its reporting to CBS at its 16th Session (November 2016), including its proposed working structure and E ...
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TCP. WMO/ESCAP Panel on Tropical Cyclones - Forty-third session : final report
World Meteorological Organization (WMO) ; Economic and Social Commission for Asia and the Pacific (ESCAP) - WMO, 2016
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International Best Track Archive for Climate Stewardship, third workshop (IBTrACS-III), Report and Recommendations : final report
Knapp Kenneth - WMO, 2016The 3rd international IBTrACS workshop was held in Honolulu, Hawaii, on 16-February-2016. This workshop was held in conjunction with the 2nd International Workshop on the Satellite Analysis of Tropical Cyclones, and so was an opportunity to have a good cross-section of the international tropical cyclone community in order to advance the work of IBTrACS in serving the needs and requirements of IBTrACS users. NCEI’s Kenneth Knapp conducted the workshop in person and was supported by members of NCEI’s IBTrACS team (Howard Diamond, James Kossin, Michael Kruk, and Carl Schreck) on the phone in help ...
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International Workshop on Satellite Analysis of Tropical Cyclones II (IWSATC-II), Report and Recommendations : final report
In this report, we summarize the reported changes in TC satellite analysis techniques since IWSATC-I (2011) and highlight the continued development of existing objective analysis methods as well as the emergence of new algorithms.
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Guide to Virtual Private Networks (VPN) via the Internet between GTS centres
After describing various concepts related to Virtual Private Networks (VPNs) and Internet Protocol Security (IPSec), this document presents a potential methodology to introduce a technical solution to the Global Telecommunication System (GTS) and shows why these tools can enhance communication capabilities among World Meteorological Organization (WMO) Members for operational traffic exchanges.
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