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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 ...
Desafíos en la transición de las redes de observaciones meteorológicas convencionales a las automáticas en registros climáticos a largo plazo
Ya se han publicado las Directrices para la gestión de las modificaciones en los programas de observación del clima, que incluyen un conjunto de prácticas recomendadas conforme a las cuales pueden gestionarse dichas modificaciones (OMM, 2007). La presente nota orientativa se centrará en las EMA que probablemente formarán parte de registros climáticos de largo plazo. En general, serán de propiedad de los SMHN u organismos conexos, o a veces de terceros (por ejemplo, organismos de aviación, agricultura o transporte por carretera) de conformidad con las normas adoptadas por los SMHN. La experienc ...
L’automatisation des réseaux d’observation météorologique et ses répercussions sur la surveillance à long terme du climat
L’OMM a déjà publié des directives assorties de pratiques recommandées pour la gestion des changements apportés aux programmes d’observation du climat (OMM, 2007). La présente publication met l’accent sur les SMA qui seront probablement utilisées pour l’établissement de relevés climatologiques sur le long terme. Ces stations seront en principe détenues par des SMHN ou des organismes qui leur sont associés, voire par des tiers (organismes opérant dans les secteurs de l’aviation, de l’agriculture ou du transport routier par exemple), selon des modalités approuvées par les SMHN. L’expérience mont ...
Сложности при переходе с традиционных метеорологических наблюдательных сетей на автоматические для длительных климатических наблюдений
Руководящие принципы управления изменениями в программах климатических наблюдений с набором рекомендуемых практик, с помощью которых можно управлять такими изменениями, уже были опубликованы (WMO, 2007). В данной директивной записке основное внимание уделяется тем АМС, которые могут стать частью долгосрочных климатических записей. Обычно они принадлежат НМГС или ассоциированным агентствам, а иногда третьим сторонам (например, авиационным, сельскохозяйственным или автотранспортным агентствам) в соответствии со стандартами, одобренными НМГС. Опыт показывает, что частные АМС могут быть полезны дл ...
长期气候记录从常规气象观测网向自动气象观 测网过渡中的挑战
世界气象组织 (WMO) - WMO, 2017WMO已经发布了管理气候观测计划变化的指导原则，其中有一套可以管理这种变化的建议做法（WMO，2007）。本指南将侧重于那些可能构成长期气候记录一部分的AWS。这些AWS 通常由NMHS 或相关机构所有，或有时由第三方（如航空、农业或公路运输机构）根据NMHS认可的标准拥有。经验表明，私人AWS对某些气候目的是有用的（如提供个别局地尺度的极端事件信息），但很少能达到所需的记录长度、准确性或敞度标准，或场地和仪器的长期稳定性，不可能对十年或更长的时间尺度的监测有很大价值。
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 ...
Guide du système mondial d'observation
Organisation météorologique mondiale (OMM) - OMM, 2017 (édition 2010, mise à jour en 2017; OMM-No. 488)Le présent guide a pour objet premier de fournir des renseignements pratiques sur l’élaboration, l’organisation, la mise en oeuvre et l’exploitation du Système mondial d’observation afin d’encourager la participation de tous les Membres à ce dernier et d’optimiser son utilité pour chacun d’eux. Ce guide, qui explique et décrit les pratiques, les procédures et les spécifications du SMO, vise à aider le personnel technique et administratif responsable, dans les Services météorologiques nationaux, des réseaux de stations d’observation, à élaborer les instructions pour l’observation au plan nation ...
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.
Basic Satellite Imagery Interpretation
This lesson teaches the basics of satellite image interpretation to forecasters, meteorology students, and other interested learners, with an emphasis on the African region. It begins by briefly describing visible, infrared, and water vapour channels, as well as RGBs and derived products. From there, it teaches learners how to interpret clouds and surface features using various channels and products. This sets the stage for the final section, where learners practice identifying features using assorted imagery and products. The lesson uses Meteosat Second Generation imagery over Africa and, to ...
Gravity for Geodesy II: Applications
Gravity is an important part of geodesy, with implications for height measurements and many other applications. In this module, we explore the concept of equipotential surfaces and relate them to gravity. Then we discuss geodetic applications that rely on accurate gravity measurements, including leveling surveys and floodplain mapping. We introduce a special surface based on gravity, called the gravimetric geoid, and explain why we want to use it as a reference datum. We discuss how to measure Earth’s gravity and introduce you to the National Geodetic Survey’s GRAV-D project, including how and ...
Training Tutorials and Datasets for GOES-R/JPSS New Generation Satellite Aerosol Products
These free training resources include video tutorials as well as case studies with accompanying data and imagery. The resources introduce the new generation of aerosol products available from the JPSS series of polar-orbiting satellites (SNPP/VIIRS) and the GOES-R series of geostationary satellites (GOES-16/ABI). Users will learn about the types of satellite aerosol products available, including aerosol optical depth/thickness (AOD/AOT) and aerosol detection (smoke/dust masks), as well as complimentary satellite products, such as fire radiative power (FRP) hotspots and visible color imagery (R ...
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