Weather
Vera Meyer discusses research on Cell tracking and Nowcasting using 3D lighting- and radar data in Southern Germany.
Vera Meyer (ZAMG) presents her PhD research on Cell tracking and Nowcasting using 3D lighting- and radar data in Southern Germany. Research conducted at DLR.
Presentation on the use of the MPEF Divergence Product for diagnosing the divergence associated with upper-level wind field disturbances that produces forcing for ascent and favours the development of deep moist convection.
Presentation by Christo Georgiev during the Event Week on Convection in June 2011. The presentation concentrates on the use of the MPEF Divergence Product for diagnosing the divergence associated with upper-level wind field disturbances that produces forcing for ascent and favours the development of deep moist convection.
Nefodina is an effective model designed to detect convective system evoluting in the Mediterranean basin.
Davide Melfi (CNMCA) presents the development on the NEFODINA product. This is an effective model designed for the detection and the forecasting of the convective systems evolution in the Mediterranean area. It is composed by a system of neural networks and a varying temperature threshold method. It is able to detect not only the convective clusters but also all the convective cells inside them. He explained the product and gave some examples of how the products are used.
Webcast on the detection and monitoring of convective storms by using MSG imagea and products.
Aydin Erturk (TSMS) present on the "Detection and Monitoring Convective Storms by Using MSG Image and Products". The MSG SEVIRI is crucial data source for the nowcasting applications. Storm top features with IR imagery were well defined and published. MSGView software being operationally used for detection and monitoring convective storms at Turkish State Meteorological Service. Two case studies (a cold U/V and a cold ring shape) were demonstrated and discussed in this presentation.
Webcast on the use of IR8.7 for the detection of deep moisture convection.
Presentation given by Thomas Krennert (ZAMG) on the use of the IR8.7 channel for the detection of deep moisture convection (DMC) on marked WV boundaries.
Presentation by Pieter Groenemeijer, director of ESSL, the European Severe Storms Laboratory about the activities.
Presentation by Pieter Groenemeijer, Director of ESSL, the European Severe Storms Laboratory. Pieter explained about the activities of ESSL and what the organization does for the meteorological community, such as supporting research in convective weather, offering a platform to discuss convective weather via the ECSS conferences and the operation of a European Severe Weather Database.
The EUMETCAL High Impact Weather group addressed a series of convective events over Europe during the summer 2010.
The EUMETCAL High Impact Weather group addressed a series of convective events over Europe between 5 and 9 August 2010. This events affected many countries from southern areas - Mediterranean/Balkans - to northern areas - Baltic/Scandinavia. In the 30 minute presentation the group analyzed the events, combining the analysis of convection, namely by satellite, with the impacts perspective.
Presentation with results on the occurences of overshooting tops in convective clouds in relation to severe weather.
Presentation given during the Convection Week 2011 by Petra Mikus, a young researcher from the Croatian Meteorological and Hydrological Service DHMZ. The presentation presents results on the occurrences of overshooting tops in convective clouds in relation to severe weather in Austria, Slovenia and Croatia.
This one hour lecture, held by Jose Prieto, is covering topic of solar satellite channels, mostly from SEVIRI instrument on board MSG.
This one hour lecture, held by Jose Prieto, is covering topic of solar satellite channels, mostly from SEVIRI instrument on board MSG. Of all twelve channels form SEVIRI these are the first four, with central wavelengths of 0.3-1.1; 0.6; 0.8 and 1.6 µm, respectively. First one is a high resolution broad band, second two are narrow band and the fourth one is a microphysics channel. There is significant correlation between channels 0.6 and 0.8 µm, where channel 1.6 µm is somewhat different from them. Also small correlation between solar and other thermal channels is discussed.
Some of the topics that are covered in this lecture are; Solar channels characteristics, Vegetation monitoring, Cloud phase and particle size, Sun glint occurrence and Aerosols. Questions like How to discern clouds from forest, how to find ice on planet Earth, how to avoid squinting on satellite images or escape the smoke of a fire are discussed and answered within all this topics.
Image enhancement is a process of image modification or improvement of its quality, the aim of which is to achieve a more pleasing appearance of the final image.
This short, but interesting and to all satellite community very useful lecture is brought by Martin Setvak.
Image enhancement is a process of image modification or improvement of its quality, the aim of which is to achieve a more pleasing appearance of the final image. However, in science, the main goal for image enhancement is to increase the interpretability of the image to a human eye and brain, typically focusing on a certain feature carried by the image.
Example of this kind of enhancement you can see in everyday use of digital cameras, which have some kind of built-in image enhancement (software based). So the \'raw\' images captured by the EM sensor can be further improved by simple computer post-processing (in other words - enhancement).
Processes of enhancement can be done with various methods, such as; histogram-based methods, curves adjustment, gamma function adjustment, noise reduction, utilization of advanced filters, etc. Also a few nice examples you can see here and taste the abilities of this kind of image improvement.
Convective clouds can be characterized by three cloud top properties that can be detected by satellites and represented by respective tree RGB components which are discussed in the presentation.
Convective clouds can be characterized by three cloud top properties that can be detected by satellites and represented by respective tree RGB components;
1. Visible brightness, reflecting more solar radiation for thicker clouds with more water and ice (associated with RED color on RGB composites),
2. Cloud particle size and phase (water or ice), having larger drops with greater depth (associated with GREEN color on RGB composites).
3. Temperature, lover for higher tops (associated with BLUE color in RGB composites).
Microphysical processes within the clouds are specially discussed in this lecture, because they present great importance to the net reflectance of the clouds. Various combinations can be made of all the satellite channels to produce desired RGB combination (e.g. Airmass RGB and Dust RGB product) in order to track properties of interest like formation of fog, drizzle, rain clouds, intensive convective storms, etc. This presentation is given by Daniel Rosenfeld from Hebrew University of Jerusalem, Institute of Earth Sciences.
Two software packages for producing products for nowcasting purposes are SAFNWC/MSG (for geostationary satellites) and SAFNWC/PPS (for polar satellites) and the overview of these are given here.
This lesson, given by Maria Putsay from Hungarian Meteorological Service, is about derived products for nowcasting applications. Objectives of the Nowcasting SAF are development of Nowcasting products derived from MSG and Polar satellite systems, delivering of the SW Packages to users and User\'s support task through Help Desk. Two software packages for producing products for nowcasting purposes are SAFNWC/MSG (for geostationary satellites) and SAFNWC/PPS (for polar satellites) and the overview of these are given here. Products may be used in two ways; as an input to a program (e.g. to an objective meso-scale analysis or as intermediate product input to other products) and as an final image product for display at a forecaster\'s desk, or case studied. But the main aim is firs one mentioned. Also in this lecture applications of the NWC SAF products at the Hungarian Meteorological Service are discussed.