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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https://www.czechspaceportal.cz/prilezitosti-v-esa/volitelne-programy-esa-s-ucasti-cr/program-vyvoje-vedeckych-experimentu-prodex/
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