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Tropical Mesoscale Convective Systems
Mesoscale Convective Systems (MCSs) occur globally and can account for significant percentages of the annual precipitation in some locations. MCSs are responsible for flooding as well as damaging surface winds in some instances. Thus, it is important for forecasters to understand when, where, and how MCSs develop and maintain themselves. This module covers all modes of MCSs with a strong focus on the tropics and the different aspects that brings to MCS development, maintenance, and structure. It describes conceptual models of MCSs and the dynamical and physical processes that influence their e ...
GOES-R ABI: Next Generation Satellite Imaging
This extension of the COMET lesson “GOES-R: Benefits of Next Generation Environmental Monitoring” focuses on the ABI instrument, the satellite's 16-channel imager. With increased spectral coverage, greater spatial resolution, more frequent imaging, and improved image pixel geolocation and radiometric performance, the ABI will bring significant advancements to forecasting, numerical weather prediction, and climate and environmental monitoring. The first part of the lesson introduces the ABI's key features and improvements over earlier GOES imagers. The second section lets users interactively ex ...
Advanced Satellite Sounding: The Benefits of Hyperspectral Observation - 2nd Edition
This lesson is an update to the 2008 expert lecture on hyperspectral observations presented by Dr. Mitch Goldberg, Program Scientist for NOAA's Joint Polar Satellite System (JPSS) Program. The lesson discusses what hyperspectral observations are, how they are made, some current products, their contributions to improved monitoring of the atmosphere, oceans, and land surfaces, as well as their impact on numerical weather prediction. The lesson begins by discussing the importance of satellite observing systems. From there, it reviews the principles of remote sensing that are needed for deriving p ...
Regional Study Guide: Review for Aeronautical Forecasters in Africa, selections from Introduction to Tropical Meteorology, 2nd edition
This Regional Study Guide highlights the sections of the Introduction to Tropical Meteorology, 2nd Edition online textbook that are applicable to aeronautical forecasting operations in Africa. Topics include remote sensing, global circulations, tropical variability, tropical cyclones and the challenges encountered when forecasting tropical weather. The guide consists of a list of links to the content in the textbook and has its own stand-alone quiz.
WRF-EMS Aviation Products
This lesson illustrates how numerical guidance from the Weather Research and Forecasting Model - Environmental Modeling System (WRF-EMS) can be added to surface observations, satellite graphics, and conceptual models of important aviation phenomena, to produce TAFs. Specifically, the lesson describes how visibility, cloud ceilings, and the flight categories variables provide values for aviation forecasts in Africa.
Nowcasting for Aviation in Africa
Nowcasting for Aviation in Africa summarizes techniques and best practices for developing area-specific forecasts at very short (0-6 hour) timescales. This 1-hour lesson presents a case study focused on interpreting threats and communicating correct warning information for a weather event affecting multiple airports in Gauteng Province, South Africa. In completing the lesson, the learner will assess the state of the atmosphere, develop a nowcast, monitor conditions, and update/create appropriate nowcast products for aviation stakeholders.
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Subseasonal to seasonal prediction project: bridging the gap between weather and climate
Great progress has been made in recent decades on development and applications of medium-range weather forecasts and seasonal climate predictions. The subseasonal to seasonal project will bring the weather and climate communities together to tackle the intervening time range, harnessing shared and complementary experience and expertise in forecasting, research and applications, toward more seamless weather/climate prediction systems and more integrated weather and climate services.
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Predictability Beyond the Deterministic Limit
Our ability to reduce disaster risk relies on the full engagement of local governments. When national and local governments work together, they can be a formidable alliance for risk reduction.
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CAWCR technical report, 48. Seasonal Climate Prediction in the Pacific using the POAMA coupled model forecast system
Cottrill A.; Hendon Harry H.; Lim Eun-Pa; et al. - Centre for Australian Weather and Climate Research, 2012The tropical Pacific Ocean basin is home to over 20 Pacific Island nations, many of which are sensitive to climate extremes from the El Niño-Southern Oscillation (ENSO) and rainfall variability associated the Inter-Tropical Convergence Zone and the South Pacific Convergence Zone. These Pacific Island countries are highly dependent on agriculture, fishing and tourism as a major source of food production and income, which can vary greatly depending on the weather and climate experienced from year to year. Hence, the provision of skilful seasonal forecasts is important to allow these countries to ...
Subseasonal to seasonal prediction - Research implementation plan, 22 June 2012
The subseasonal to seasonal timescale provides a unique opportunity to capitalise on the expertise of the weather and climate research communities, and to bring them together to improve predictions on a timescale of particular relevance to the Global Framework for Climate Services (GFCS). A planning group which included representatives from WWRP/THORPEX, WCRP, CBS and CCl drafted the implementation plan, giving high priority to establishing collaboration and co-ordination between operational centres and the research community involved in subseasonal to seasonal prediction, and to sponsorship o ...
World Weather Watch: the fifth WMO Workshop on the impact of various observing systems on numerical weather prediction
The 5th WMO workshop on the impact of various observing systems on numerical weather prediction (NWP) was held 22-25 May 2012 in Sedona, Arizona (United States). The Workshop was hosted for WMO by the Joint Center for Satellite Data Assimilation, and additional financial support was provided by THORPEX, NASA, and NOAA (GOES-R Program Office). The WMO Expert Team on the Evolution of the Global Observing System (ET-EGOS) had proposed topics for NWP impact studies (Appendix I) relevant to the evolution of global observing systems (GOS) and participants were encouraged to present results on ...
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Seasonal forecasting outlook for precipitation and average temperature in North Africa for the February-March-April season
ACMAD, 2012
Microwave Remote Sensing: Overview, 2nd Edition
This module presents an overview of space-based microwave remote sensing for environmental applications with a focus on meteorological applications. It delivers basic information on polar-orbiting satellite characteristics, current microwave instruments, and the products they provide. Special attention is given to the newer capabilities of the U.S.’s Suomi NPP (National Polar-orbiting Partnership) and future JPSS (Joint Polar Satellite System) satellites with additional information included for those missions being operated by international partners. This module also serves as an introduction ...
Gridded Forecast Verification and Bias Correction
To become a better forecaster, it is not enough to simply know that a forecast did not verify. One must determine what happened and identify methods for improvement through forecast verification. The forecast verification process helps answer questions like: Is there a particular method that has been more effective in the past in similar circumstances? Is there guidance that is more accurate? Are there persistent biases in our forecasts? Do our forecasts perform better in certain regimes than others? In the era of gridded forecasts, grid-based verification provides more information about the s ...
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