Mezinárodní

The day-to day variability of quiet-time ionosphere is surprisingly high even during periods of negligible solar forcing. Relatively well understood is the high-latitude variability where the solar wind is directly driving the high latitude currents, convection electric field or polar aurorae. But the current understanding does not allow to accurately model the ionospheric state during the quiet-time conditions also at mid- and low-latitudes. Surprising effects remains even at mid-latitudes, including for instance double daily maxima of ionospheric critical frequency. Swarm measurements allow the characterization of the upper atmospheric conditions and dynamics (80-400 km) for more than 10 years now. The analysis of Swarm data also showed that the ionosphere is sometimes disturbed even during “quiet” solar periods: the electron density and electric field, for instance, can show significant variability that currently remains unexplained.Using Swarm data, supported by extensive ground-based measurements of both, the upper mesospheric/ lower thermosphere (UMLT) and ionospheric D-, E- and F-region, as well as the International Reference Ionosphere Model (IRI), we contribute to characterize the atmospheric state during these quiet periods. Thus, QUID-REGIS contributes to the understanding of disturbances in the upper atmosphere and clarifies whether these are at least in parts a result of neutral atmospheric dynamics from the lower atmosphere at mid-latitudes. During solar quiet periods, we will analyze Swarm data to detect unexpected variability. For these periods, we will investigate measurements at lower heights for atmospheric variability. These measurements comprise airglow observations representative for the neutral atmosphere in the UMLT (80-100km), magnetic field (and other) observations representative for the ionospheric dynamo region (85-200km) as well as airglow observations from 200-300km altitude.
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https://www.avcr.cz/export/sites/avcr.cz/cs/veda-a-vyzkum/mezinarodni-vztahy/aktuality/files/CAS-CONICET_2022-23_aj.pdf
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https://www.isac.cnr.it/en/projects/bilaterale-cnrcas-repubblica-ceca-2022-2024-improving-short-term-forecast-convective
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PITHIA-NRF aims at building a European distributed network that integrates observing facilities, data processing tools and prediction models dedicated to ionosphere, thermosphere and plasmasphere research. For the first time, PITHIA-NRF integrates on a European scale, and opens up, to all European researchers, key national and regional research infrastructures such as EISCAT, LOFAR, Ionosondes and Digisondes, GNSS receivers, Doppler sounding systems, riometers, and VLF receivers, ensuring optimal use and joint development. PITHIA-NRF is designed to provide organized access to experimental facilities, FAIR data, standardized data products, training and innovation services. Furthermore, PITHIA-NRF facilitates drastically research advances in the field of upper atmosphere and near-Earth space, through the integration of data collections from satellite missions (such as Cluster, DEMETER, Swarm and CHAMP) and results from key prediction models (such as IPIM-IRAP, MCM-SWAMI, SWIF and EUHFORIA) that can be accessed by scientific users for join exploitation with the data collected from the research infrastructures of the network. PITHIA-NRF paves the way for new observing technologies, and to standard-making processes for software and high-level data products that are tuned to meet the requirements of technologies concerned, linking best-in-class R&D facilities to provide seamless multi-technology services.
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https://www.czechspaceportal.cz/prilezitosti-v-esa/volitelne-programy-esa-s-ucasti-cr/program-vyvoje-vedeckych-experimentu-prodex/
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https://www.czechspaceportal.cz/prilezitosti-v-esa/volitelne-programy-esa-s-ucasti-cr/program-vyvoje-vedeckych-experimentu-prodex/
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Monitoring space weather events is crucial. The EU-funded SafeSpace project aims to advance space weather nowcasting and forecasting capabilities, contributing significantly to the safety of space assets through the transition of powerful tools from research to operations. This will be achieved through the synergy of five well-established space weather models. SafeSpace hopes to improve radiation belt, culminating in a prototype early warning system for detrimental space weather events, integrating information all the way from the Sun to the inner magnetosphere. Working, also, with a major European space company, SafeSpace, hopes to define indicators of particle radiation of use to space industry and spacecraft operators.
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A geomagnetic storm is a major disturbance of Earth\'s magnetosphere. It occurs when there is a very efficient exchange of energy from the solar wind into the space environment surrounding Earth. Predicting these storms is vital. This is the objective of the EU-funded PAGER project, which has assembled a team of leading academic and industry experts in space weather research, space physics, empirical data modelling and space environment effects on spacecraft from Europe and the United States. The project will provide a 1-2 day probabilistic forecast of ring current and radiation belt environments. This will allow satellite operators to respond to predictions that present a threat. The most advanced codes will be used, adapted to perform ensemble simulations and uncertainty quantifications.  
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https://www.czechspaceportal.cz/prilezitosti-v-esa/volitelne-programy-esa-s-ucasti-cr/program-vyvoje-vedeckych-experimentu-prodex/
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https://www.czechspaceportal.cz/prilezitosti-v-esa/volitelne-programy-esa-s-ucasti-cr/program-vyvoje-vedeckych-experimentu-prodex/
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https://www.czechspaceportal.cz/prilezitosti-v-esa/volitelne-programy-esa-s-ucasti-cr/program-vyvoje-vedeckych-experimentu-prodex/
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Travelling Ionospheric Disturbances (TIDs) constitute a threat for operational systems for which the ionosphere is an essential part (i.e., radio systems) or for which the ionosphere is fundamentally a nuisance (i.e. GNSS based systems and applications). The overarching objective of TechTIDE is to design and test new viable TID impact mitigation strategies for the technologies affected by the TIDs and in close collaboration with operators of these technologies, to demonstrate the added value of the proposed mitigation techniques which are based on TechTIDE products. To achieve this main goal, it is necessary to address the following specific objectives: i. Improve understanding regarding the physical processes resulting in the formation of TIDs, and consequently to identify the drivers in the interplanetary medium, the magnetosphere and the atmosphere; ii. Define the impact of the TIDs on the space based navigation systems (mainly EGNOS services and N-RTK) and on ground-based HF communication and geolocation systems; iii. Develop improved methodologies, based on consortium partners’ algorithms, suitable to support for the first time the direct,real-time identification and tracking of TIDs over wide world regions; iv. Establish an operational system to issue warnings of the occurrence of TIDs over the region extending from Europe to South Africa, to estimate the parameters that specify the TID characteristics and the inferred perturbation, and provide all additional geophysical information to the users to help them assess the risks and to develop mitigation techniques, tailored to their applications; v. Work systematically with potential users to assess the functionality, reliability and efficiency of the TechTIDE services paving the way to its systematic exploitation from users and to its sustainable operation.
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https://www.czechspaceportal.cz/prilezitosti-v-esa/volitelne-programy-esa-s-ucasti-cr/program-vyvoje-vedeckych-experimentu-prodex/
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The Europlanet 2020 Research Infrastructure (EPN2020-RI) will address key scientific and technological challenges facing modern planetary science by providing open access to state-of-the-art research data, models and facilities across the European Research Area. Its Transnational Access activities will provide access to world-leading laboratory facilities that simulate conditions found on planetary bodies as well as specific analogue field sites for Mars, Europa and Titan. Its Virtual Access activities will make available the diverse datasets and visualisation tools needed for comparing and understanding planetary environments in the Solar System and beyond. By providing the underpinning facilities that European planetary scientists need to conduct their research, EPN2020-RI will create cooperation and effective synergies between its different components: space exploration, ground-based observations, laboratory and field experiments, numerical modelling, and technology. EPN2020-RI builds on the foundations of successful FP6 and FP7 Europlanet programmes that established the ‘Europlanet brand’ and built structures that will be used in the Networking Activities of EPN2020-RI to coordinate the European planetary science community’s research. It will disseminate its results to a wide range of stakeholders including industry, policy makers and, crucially, both the wider public and the next generation of researchers and opinion formers, now in education. As an Advanced Infrastructure we place particular emphasis on widening the participation of previously under-represented research communities and stakeholders. We will include new countries and Inclusiveness Member States, via workshops, team meetings, and personnel exchanges, to broaden/widen/expand and improve the scientific and innovation impact of the infrastructure. EPN2020-RI will therefore build a truly pan-European community that shares common goals, facilities, personnel, data and IP across national boundaries
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It has been robustly demonstrated that variations in the circulation of the middle atmosphere influence weather and climate throughout the troposphere all the way to the Earth’s surface. A key part of the coupling between the troposphere and stratosphere occurs through the propagation and breaking of planetary-scale Rossby waves and gravity waves. Limited observation of the middle atmosphere and these waves in particular limits the ability to faithfully reproduce the dynamics of the middle atmosphere in numerical weather prediction and climate models. ARISE2 capitalizes upon the work of the EU-funded first ARISE project combining for the first time international networks with complementary technologies such as infrasound, lidar and airglow. This joint network provided advanced data products that started to be used as benchmarks for weather forecast models. The ARISE network also allows enhanced and detailed monitoring of other extreme events in the Earth system such as erupting volcanoes, magnetic storms, tornadoes and tropical thunderstorms. In order to improve the ability of the network to monitor atmospheric dynamics, ARISE2 proposes to extend i) the existing network coverage in Africa and the high latitudes, ii) the altitude range in the stratosphere and mesosphere, iii) the observation duration using routine observation modes, and to use complementary existing infrastructures and innovative instrumentations. Data will be collected over the long term to improve weather forecasting to monthly or seasonal timescales, to monitor atmospheric extreme events and climate change. Compared to the first ARISE project, ARISE2 focuses on the link between models and observations for future assimilation of data by operational weather forecasting models. Among the applications, ARISE2 proposes infrasound remote volcano monitoring to provide notifications to civil aviation. The data portal will provide high-quality data and advanced data products to a wide scientific community.
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Síť mikrobarografů a systém Dopplerovského měření je začleněn do mezinárodní evropské pozorovací sítě. Projekt zahrnuje vývoj standardů a unifikace měření. Tématem projektu je studium atmosférických vln pomocí mikrobarografů a dalších přístrojů a hlavní přínos ÚFA je studium dynamiky ionosféry.
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