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Displaying 17 contributions out of 17
The LAGO (LAGO: Latin American Giant Observatory) project is a collaborative network formed by eleven countries (Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guatemala, Mexico, Peru, Spain, and Venezuela). The network of WCDs has nodes at sites with different rigidity cut-offs and different altitudes. One of the aims of LAGO is to study the flux of the secondary particles at ground leve ... More
Presented by Dr. Sergio DASSO on 4 Dec 2017 at 15:50
Both institutes, the Royal Observatory of Belgium (ROB) and the Royal Meteorological Institute (RMI) of Belgium, are monitoring and studying the atmospheric water vapour using several ground-based (GNSS), satellite-based (GOME,SCHIAMACHY, GOME-2, AIRS), and in-situ (radiosonde) measuring techniques but also atmospheric models (ERA-interim, ALARO). These activities mainly aim at improving weather f ... More
Presented by Dr. Eric POTTIAUX on 4 Dec 2017 at 14:00
Basis concepts of SAR interferometry (InSAR) will be presented, stressing problems related to atmosphere and/or ionosphere-induced artefacts. InSAR applications related to the cryosphere study will be presented.
Presented by Dr. Dominique DE RAUW on 4 Dec 2017 at 16:20
The understanding of the impact of solar activity on polar regions upper atmosphere is not as strong as compare to low and mid-latitudes due to lack of experimental observations, especially over Antarctica. To characterize the differences in the ionosphere-plasmasphere total electron content (TEC) climatological patterns over Antarctica, we reprocessed the GNSS (GPS + GLONASS) data availa ... More
on 4 Dec 2017 at 11:30
Ground-based microwave remote sensing is extremely useful for monitoring the atmospheric composition and physical properties. It is effective during both daytime and nighttime, in clear sky or mild overcast weather, and is therefore particularly suited for observing the Polar regions where darkness (or direct sunlight) lasts throughout an entire winter (summer) season. Most techniques in this freq ... More
Presented by Dr. Giovanni MUSCARI on 4 Dec 2017 at 14:15
The aurora can cause significant localised changes in the chemistry and climate of the neutral and ionised upper atmosphere. Electric currents associated with auroral features heat the atmosphere, and auroral particle precipitation ionises and excites the neutral species present. The aurora is often highly dynamic and structured on multiple scales, and thus the associated electric field is also va ... More
Presented by Dr. Daniel WHITER, Dr. Joshua CHADNEY on 4 Dec 2017 at 16:05
INGV operates a network of GNSS receivers acquiring data at 50 Hz incorporating a firmware especially modified to provide several parameters useful to monitor the perturbations of the high latitudes upper atmosphere. In particular, the first GPS receiver was installed in 2003 at Ny-Ålesund (Svalbard Island, 78°55’N 11°55’E). Currently, three receivers are operating at Ny-Ålesund, recording ... More
Presented by Dr. Luca SPOGLI on 4 Dec 2017 at 11:45
The spatially and temporally varying electron density of the ionosphere causes complex distortions to passing radio wavefronts, becoming dominant at frequencies $\leq 1$ GHz. Using a probabilistic description of the system we apply Bayesian inference to study and derive the phase distortions of radio astronomical data in multiple directions. The relative improvement to image quality is studie ... More
Presented by Mr. Joshua ALBERT on 4 Dec 2017 at 14:45
I will review the importance of carrying out radio or radar observations of meteors from South polar regions. From an astronomical point of view, totally different radiants can be observed than with radars at intermediate latitudes. From a space weather perspective, this provides complementary observations to build a more complete dust risk impact model. For atmospheric applications, measurement ... More
Presented by Dr. Hervé LAMY on 4 Dec 2017 at 15:00
In January-February 2016, we have installed a compact magnetic antenna augmented with data processing equipment at the Belgian Princess Elisabeth station (71°57’S - 23°20’E; 1380 m altitude; L$\sim$5.5R$_{E}$). This VLF antenna is composed of two search coils in a waterproof plastic box, inside a wooden thermal insulated box, fixed on the top of a wooden table. This antenna records VLF (Very ... More
Presented by Dr. Fabien DARROUZET on 4 Dec 2017 at 12:50
Atmospheric water vapor is an important constituent of the global hydrological cycle; it transports humidity and heat and it is the most important greenhouse gas. While over open ocean total precipitable water vapor (PW) is routinely surveyed with satellite microwave imagers like SSMI(S) and AMSR-E/2, large-scale observations in polar regions with low water vapor burden are much more difficult be ... More
Presented by Dr. Georg HEYGSTER on 4 Dec 2017 at 14:30
While the users of radio devices often consider the atmospheric contribution to their radio measurements to be a source of error that needs to be corrected, deleted, or mitigated, atmospheric scientists who rely on radio techniques have a common interest: to isolate the atmospheric contribution and use it in the study of the near-earth space environment. Currently, several instruments working on ... More
Presented by Dr. Lucilla ALFONSI on 4 Dec 2017 at 11:00
Ionospheric sounding, ozone and geomagnetic measurements were started at Ukrainian Antarctic station (UAS) Akademik Vernadsky (until 1996 British base Faraday) since late 50-th of previous century. The ELF monitoring of global lightning activity as well as Schumann, ionospheric Alfven and magnetospheric resonators were begun at 2000. During last decade we are use the GNSS-TEC technique for estimat ... More
Presented by Dr. Andriy ZALIZOVSKI on 4 Dec 2017 at 15:15
We present the Global Navigation Satellite Systems (GNSS) ionospheric monitoring techniques developed by the authors and implemented in terms of associated products, which are being computed globally, in real-time and rapid latencies. We will focus on the potential contributions to the improvement of GNSS performance and Ionospheric Science in polar regions, in terms of Space Weather monitoring, S ... More
Presented by Prof. Manuel HERNÁNDEZ-PAJARES on 4 Dec 2017 at 11:15
Presentation to be given during the one day workshop organized at ROB, reporting on the state of the art of the GRAPE Expert Group.
Presented by Dr. Giorgiana DE FRANCESCHI on 4 Dec 2017 at 10:45
This is an overview of the The Solar-Terrestrial Center of Excellence (STCE) activities. The Solar-Terrestrial Centre of Excellence is a scientific project which aims at the creation of an international expert centre and the valorization of Solar-Terrestrial research and services. The STCE clusters the know-how of 3 Belgian Federal institutes: Royal Observatory of Belgium ROB, Royal Meteorologi ... More
Presented by Dr. Ronald VAN DER LINDEN on 4 Dec 2017 at 10:35
The Low-Frequency Array (LOFAR) is a hierarchical collection of thousands of dipole antennas which make it the most sensitive radio interferometer operating at low-frequencies ($10-240$ MHz). His main goal is low-frequency radio astronomy. LOFAR antennas are grouped into stations (aperture arrays capable of multi-beam forming) each about the size of a football field. LOFAR has 38 stations in the N ... More
Presented by Dr. Francesco DE GASPERIN on 4 Dec 2017 at 12:35