Global Campus
The WMO Global Campus E-Library
The WMO Global Campus initiative is proud to offer this WMOLearn Library of resources. This library provides a searchable collection of educational resources, including WMO publications and education and training materials from various contributing organisations and individuals. Search by WMO competency framework, Main Topics, Region and Country, and/or Nature of Information to find materials useful for training or self-directed learning.
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WMO Global Campus resources provided on this Site are provided “as is”, without warranty of any kind, either express or implied, including, without limitation, warranties of merchantability, fitness for a particular purpose and non-infringement. The WMO specifically does not make any warranties or representations as to the accuracy or completeness of any such resources.
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ASMET: Satellite Precipitation Products for Hydrological Management in Southern Africa
This module introduces a variety of meteorological and hydrological products that can improve the quality of heavy rainfall forecasts and assist with hydrological management during extensive precipitation events in Southern Africa. Among the products are the satellite-based ASCAT, SMOS, and ASAR GM soil moisture products and the hydro-estimator. The products are presented within the context of a case, the flooding of South Africa's Vaal Dam region in 2009/2010.
Heavy Banded Snow
This webcast is based on a presentation by Dr. Moore MSC/COMET Winter Weather Workshop in Boulder, CO, 4 December 2002. In it, he covers the definition of the TROWAL and its role in heavy snow production in the form of bands primarily located to the northwest of the surface low. The various conveyor belts associated with mature winter cyclones are emphasized. The roles of mid-level frontogenesis and conditional symmetric instability in these systems are discussed in the context of heavy snow development.
Writing Effective TAFs in the Caribbean
The module reviews the fundamental steps for writing a Terminal Aerodrome Forecast (TAF) using guidelines and recommendations developed by the World Meteorological Organization (WMO) and the International Civil Aviation Organization (ICAO). This module outlines effective forecast methodologies to develop TAFs that represent the expected conditions that aviation customers can use to make operational decisions and minimize unnecessary costs. The module walks users through the process of analysis of satellite, surface, and observational data to create a TAF forecast for an airport in the Caribbea ...
The U.S. Naval Observatory: Mission, Products, and Services
Founded in 1830, the United States Naval Observatory (USNO) is among the oldest scientific agencies in the United States. Initially tasked with restoring, repairing, and rating nautical instruments, the USNO today provides precise time and celestial measurements required for GPS, telecommunications, navigation, and other operations. Intended as an introduction to the USNO, this module examines how the Observatory goes about its mission, and briefly describes the science behind its observations and publications.
Skew-T Mastery
Meteorologists typically examine atmospheric soundings in the course of preparing a weather forecast. The skew-T / log-P diagram provides the preferred method for analyzing these soundings. This module comprehensively examines the use of the skew-T diagram. It explores thermodynamic properties, convective parameters, stability assessment, and several forecast applications. The module is designed for both instruction and reference. It also comes with an interactive Web-based skew-T diagram that calculates several common forecast parameters.
Statistical Methods in the NWS National Blend of Global Models Part 2
This lesson introduces users to the statistics used in generating the various weather element forecasts included in version 2 and 3 of the U.S. National Weather Service (NWS) National Blend of Global Models (NBM). This Level 3 lesson is intended for forecasters and users of NWS forecast products; some prior knowledge of numerical weather prediction and statistics is useful. Learners will be introduced to the analysis of record used to calibrate the NBM’s bias and error estimates. Learners will also explore the bias correction, weighting, and post-processing procedures used to produce the forec ...
Polar Satellite Products for the Operational Forecaster: Microwave Analysis of Tropical Cyclones
This module introduces forecasters to the use of microwave image products for observing and analyzing tropical cyclones. Microwave data from polar-orbiting satellites is crucial to today’s operational forecasters, and particularly for those with maritime forecasting responsibilities where in situ observations are sparse. This module includes information on storm structure and techniques for improved storm positioning using the 37 and 85-91 GHz channels from several satellite sensors. Information on current sensors and on the product availability in the NPOESS era is also presented.
What's Coming in Hydrologic Impacts Studies?
In this recorded webinar from the Hydrologic Impacts Under Climate Change (HIUCC) course (June 2017), Dr. Julie Vano describes what the near future will likely bring in terms of hydrologic impacts studies. Her talk is parsed into four sections. Section 1 summarizes ongoing research. Section 2 discusses the sharing of hydro-climate information. Section 3 moves into the future and describes the process of planning, executing, and evaluation a climate impacts study. Section 4 provides concluding thoughts from Dr. Vano and includes three questions (and answers) from the HIUCC course attendees.
Radar Signatures for Severe Convective Weather
This resource is intended for use as a job aid by operational weather forecasters in live warning situations and as a reference tool to better understand some aspects of severe thunderstorm warning events. Thumbnail images show typical representatives for sixteen radar reflectivity and velocity signatures as well as three primary severe storm types. Each signature links to content describing detection techniques and conceptual and diagnostic information to help determine storm severity. The majority of the examples shown are southern hemisphere storms in Australia; examples from the northern h ...
Understanding the Hydrologic Cycle
This module helps students gain a basic understanding of the elements of the hydrologic cycle. Making use of illustrations, animations, and interactions, this module examines the basic concepts of the hydrologic cycle including water distribution, atmospheric water, surface water, groundwater, and snowpack/snowmelt.
Forecasting Mountain Wave Turbulence for Aviation
Turbulent flow that impacts aviation can be caused by several different factors and can occur at both low and high-levels in the atmosphere. This lesson focuses on forecasting mountain wave turbulence. Its methodology relies on the spatial and temporal distribution of winds, stability, and clouds to forecast and verify mountain wave turbulence. Analyzed forecast products include NWP charts, cross sections and soundings, satellite imagery, RAOBs, PIREPS, and graphical turbulence guidance (GTG). The lesson is targeted for aviation forecasters at the U.S. National Weather Service (NWS). The modul ...
Tropical Cyclone Forecast Uncertainty
This lesson introduces learners to the uncertainty and errors in forecasting the track, timing, and intensity of tropical cyclones. It provides an overview of how the National Hurricane Center’s cone of uncertainty is constructed, as well as its uses and common misconceptions. Learners will explore the influences of track, timing, and intensity forecast errors on potential tropical cyclones impacts. The lesson offers suggestions on how to communicate tropical cyclone forecasts knowing their inherent uncertainty. This online lesson is part of the Tropical Cyclone Storm Winds: Forecasting and Co ...
Writing TAFs for Convective Weather, 2nd Edition
"Writing TAFs for Convective Weather, 2nd Edition" uses a severe thunderstorm event to illustrate techniques for producing an effective Terminal Aerodrome Forecast (TAF) following current National Weather Service directives. The unit offers guidance for developing TAFs for different types of convection and discusses how to concisely communicate logic and uncertainty in an aviation forecast discussion (AvnFD) or by other means. It also addresses the importance of maintaining an effective TAF weather watch and updating the TAF proactively.
Precipitation Estimates, Part 1: Measurement
This is part one of a two-module series on estimation of observed precipitation. Through use of rich illustrations, animations, and interactions, this module provides an overview of the science of precipitation estimation using various measuring platforms. First, we define quantitative precipitation estimation (QPE) and examine technologies for remote sensing of QPE, including radar and satellite and the strengths and limitations of each. That is followed by an examination of the use of rain gauges for precipitation estimation and important issues to consider with rain gauge measurement. Final ...
Flow Interaction with Topography
This is a foundation module in the Mesoscale Meteorology Primer series. Topics covered include an overview of factors that control whether air will go up and over a mountain or be forced around it, the role of potential and kinetic energy, the Froude number and what it tells you, and air flow blocked by topography.
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