Identify and interpret atmospheric phenomena
Friedrich Obleitner gives an overview presntation on instruments and techniques used for ground-based wind measurements.
The standard surface wind speed and direction measurements are based on different measurement principles: cup anemometers and vanes, hot wires, pitot tubes and sonic anemometers. Pros and cons of the different measuring methods regarding accuracy and applicability will be discussed as well as some practical aspects concerning setup, maintenance and post-processing. Beyond surface wind measurements, the talk will also touch on ground-based systems to measure vertical wind profiles.
David M. Schultz gives a presentation on the different conceptual models approaches concerning occlusion processes in frontal systems.
This talk presents new conceptual models in cyclone structures and evolutions. How does the large-scale flow in which the cyclone is embedded determine the type of frontal evolution that occurs? How does the air flow through cyclones, and what can this tell us about the possibility for damaging winds at the surface? This talk concludes with general principles for how forecasters can improve their skill through the use of conceptual models in operational forecasting.
Fernando Prates gives a presentation on forecasting the tracks of tropical cyclones (TC). He gives presents the TC products delivered by ECMWF.
In this module the importance of forecasting tropical cyclones (TC) is briefly discussed. An overview is given of the recent developments in the forecast systems at ECMWF with impact on the forecast of TCs, including the recent change in the model’s resolution and the implementation of the Ensemble Data Assimilation. At the present time, any TC formed in the forecast system can be identified using a tracker developed at ECMWF. How does it work and what kind of products that can be derived from it is discussed. Some examples are also presented to highlight the model's ability to forecast the genesis of TCs. Finally the statistics of the forecast performance for TCs is discussed.
Petra Mikus reports on nowcasting of severe weather using different satellite and NWP based products.
Length: 30 minutes.
Nowcasting of severe convective storms is still one of the most challenging tasks for operational forecasters. Satellite data are very useful in convection nowcasting because they enable a detailed monitoring of the various stages of convection; from the pre-convective environment to specific features on the tops of the mature convective clouds. Also, future MTG system will provide even better tools for convection nowcasting: satellite data with better temporal (every 2.5 min) and spatial resolution.
Various satellite products as well as their advantages and disadvantages for analysis and monitoring of the convective development over the Southern and Central Europe will be shown in the lecture presented by Petra Mikuš Jurković (DHMZ, Croatia). Also, the most interesting convective episodes detected during the 2.5 minute rapid-scan experiments with the MSG satellites will be analysed in detail.
Jochen Kerkmann discusses the characteristics of the Dust RGB and presents the challenges of detecting dust clouds (like low level dust at night over water).
Length: 30 minutes.
Dust and smoke detection with SEVIRI RGB products: the lecture focuses on dust and smoke clouds and their identification in RGB products. The first part looks at the solar channels and the natural colours RGB product; the second part presents the triple window IR channels and the resulting dust RGB product. Some challenges of detecting dust clouds (like low level dust at night over water) will be discussed.
Maria Putsay talks about how to create an RGB image, how to extract, distill, and package the data into products that are easy to interpret and use for forecasters.
Length: 60 minutes.
What is the benefit to work with RGBs not only with single channel images? How to create an RGB image from raw data? How to create a good RGB image? How to enhance features and which features to enhance? Why use standard RGBs? How to extract, distill, and package the data into products that are easy to interpret and use for forecasters?
Jochen Kerkmann gives an overview on the historical development of satellites, orbits and instruments.
Length: 30 minutes.
The invention of weather satellites has opened a new area in weather forecasting. Satellite observations enable to continuously monitor the weather regimes on the whole globe. Therefore they provide a powerful tool in weather forecasting. This lecture leads from the invention of weather satellites to the current operational satellites.
Hamidou Hama highlights the major socio-economic and environmental impacts of dust, focuses on the meteorological processes at various scales that are responsible for raising dust/sand storms in the arid Sahara Desert and the semi arid Sahel at its fringes.
Length: 40 minutes.
This presentation, after highlighting the major socio-economic and environmental impacts of dust, focuses on the meteorological processes at various scales that are responsible for raising dust/sand storms in the arid Sahara Desert and the semi arid Sahel at its fringes. The challenges facing the weather forecaster in forecasting such high impact weather phenomena and the importance of satellite remote sensing in their monitoring were also addressed here.
Christopher Perez gives an insight into Typhoons and their features.
Length: 35 minutes.
Christopher Perez, a weather forecaster of the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) will gave an insight into Typhoons and their features. Specifically, he presented the chronology of events regarding Typhoon "Haiyan", one of the strongest tropical cyclones ever recorded, which devastated portions of Southeast Asia, particularly the Philippines, on November 8, 2013.
Helge Tuschy's talk offered an insight into the ingredients-based forecasting method, which assists an operational forecaster in preparing well ahead of an active thunderstorm day.
Length: 60 minutes.
This talk offered an insight into the ingredients-based forecasting method, which assists an operational forecaster in preparing well ahead of an active thunderstorm day. Mr. Tuschy also gave an overview about certain ingredients which could result in heavy rainfall and flash flooding (due to deep moist convection). He ended his talk with a short overview about ESTOFEX, the European Storm Forecast Experiment.
Hamidreza Mosaffa presents a study that aims 1) to develop the long-term climatological SM2RAIN datasets for the period of 1998–2020 by merging two rainfall SM2RAIN products including SM2RAIN-CCI and SM2RAIN-ASCAT, and 2) to the analysis of drought based on standardized precipitation index over the USA.
Investigation of drought variability requires long term rainfall dataset with high spatial and temporal resolution. The goal of this study are as follow: 1) to develop the long-term climatological SM2RAIN datasets for the period of 1998–2020 at 0.25° spatial and monthly temporal resolution by merging two rainfall SM2RAIN products including SM2RAIN-CCI and SM2RAIN-ASCAT, and 2) to the analysis of drought based on standardized precipitation index over the USA. Results indicated that the most significant decreases in the monthly rainfall trends appear in November. In addition, drought occurred during 2003, 2007, and 2012 over most parts of the USA.
The presenter gives an overview into the mechanisms of convective lines connected to winter storms such as Emma.
Convective lines in connection with intense cyclogenesis hit Middle and Western Europe almost every winter season. These lines move very quickly and are often connected with thunderstorms, heavy gusts and graupel or even hail. In this presentation the related conceptual model and the preconvective environment will be explained. Based upon different satellite products and additional data two examples will be discussed.