Search Results - "Vergados, Panagiotis"

Upper Atmospheric Responses to Surface Disturbances: An Observational Perspective by Meng, Xing, Vergados, Panagiotis, Komjathy, Attila, Verkhoglyadova, Olga

“…We review observations on the coupling between Earth's surface disturbances and the upper atmosphere. In particular, we focus on the upper atmospheric…”
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Consistency of seven different GNSS global ionospheric mapping techniques during one solar cycle by Roma-Dollase, David, Hernández-Pajares, Manuel, Krankowski, Andrzej, Kotulak, Kacper, Ghoddousi-Fard, Reza, Yuan, Yunbin, Li, Zishen, Zhang, Hongping, Shi, Chuang, Wang, Cheng, Feltens, Joachim, Vergados, Panagiotis, Komjathy, Attila, Schaer, Stefan, García-Rigo, Alberto, Gómez-Cama, José M.

“…In the context of the International GNSS Service (IGS), several IGS Ionosphere Associated Analysis Centers have developed different techniques to provide…”
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Advantages of Geostationary Satellites for Ionospheric Anomaly Studies: Ionospheric Plasma Depletion Following a Rocket Launch by Savastano, Giorgio, Komjathy, Attila, Shume, Esayas, Vergados, Panagiotis, Ravanelli, Michela, Verkhoglyadova, Olga, Meng, Xing, Crespi, Mattia

“…In this study, we analyzed signals transmitted by the U.S. Wide Area Augmentation System (WAAS) geostationary (GEO) satellites using the Variometric Approach…”
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The JPL-GIM algorithm and products: multi-GNSS high-rate global mapping of total electron content by Martire, Léo, Runge, Thomas F., Meng, Xing, Krishnamoorthy, Siddharth, Vergados, Panagiotis, Mannucci, Anthony J., Verkhoglyadova, Olga P., Komjáthy, Attila, Moore, Angelyn W., Meyer, Robert F., Ijima, Byron A., Green, Donald W.

“…The Jet Propulsion Laboratory (JPL) develops JPL-GIM, a software for generating global ionospheric maps (GIMs) of total electron content (TEC) using…”
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Observational tests of hurricane intensity estimations using GPS radio occultations by Vergados, Panagiotis, Luo, Zhengzhao Johnny, Emanuel, Kerry, Mannucci, Anthony J.

“…This study presents a novel approach to estimating the intensity of hurricanes using temperature profiles from Global Positioning System radio occultation…”
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Quantifying the Tropical Upper Tropospheric Warming Amplification Using Radio Occultation Measurements by Vergados, Panagiotis, Ao, Chi O., Mannucci, Anthony J., Kursinski, E. Robert

“…In the upper troposphere (UT), Global Navigation Satellite System (GNSS) Radio Occultations (ROs) provide accurate air temperatures (<0.5 K) every ∼200 m…”
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Approaches for Retrieving Sulfur Species Abundances from Dual X–Ka-band Radio Occultations of Venus with EnVision and VERITAS by Akins, Alex B., Bocanegra-Bahamón, Tatiana M., Wang, Kuo-Nung, Vergados, Panagiotis, Ao, Chi O., Asmar, Sami W., Preston, Robert A.

“…The EnVision and VERITAS missions to Venus will fly with X- and Ka- band telecommunications channels, which can be used to conduct radio occultation studies of…”
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Atmospheric waves and global seismoacoustic observations of the January 2022 Hunga eruption, Tonga by Matoza, Robin S, Fee, David, Assink, Jelle D, Iezzi, Alexandra M, Green, David N, Kim, Keehoon, Toney, Liam, Lecocq, Thomas, Krishnamoorthy, Siddharth, Lalande, Jean-Marie, Nishida, Kiwamu, Gee, Kent L, Haney, Matthew M, Ortiz, Hugo D, Brissaud, Quentin, Martire, Léo, Rolland, Lucie, Vergados, Panagiotis, Nippress, Alexandra, Park, Junghyun, Shani-Kadmiel, Shahar, Witsil, Alex, Arrowsmith, Stephen, Caudron, Corentin, Watada, Shingo, Perttu, Anna B, Taisne, Benoit, Mialle, Pierrick, Le Pichon, Alexis, Vergoz, Julien, Hupe, Patrick, Blom, Philip S, Waxler, Roger, De Angelis, Silvio, Snively, Jonathan B, Ringler, Adam T, Anthony, Robert E, Jolly, Arthur D, Kilgour, Geoff, Averbuch, Gil, Ripepe, Maurizio, Ichihara, Mie, Arciniega-Ceballos, Alejandra, Astafyeva, Elvira, Ceranna, Lars, Cevuard, Sandrine, Che, Il-Young, De Negri, Rodrigo, Ebeling, Carl W, Evers, Läslo G, Franco-Marin, Luis E, Gabrielson, Thomas B, Hafner, Katrin, Harrison, R Giles, Komjathy, Attila, Lacanna, Giorgio, Lyons, John, Macpherson, Kenneth A, Marchetti, Emanuele, McKee, Kathleen F, Mellors, Robert J, Mendo-Pérez, Gerardo, Mikesell, T Dylan, Munaibari, Edhah, Oyola-Merced, Mayra, Park, Iseul, Pilger, Christoph, Ramos, Cristina, Ruiz, Mario C, Sabatini, Roberto, Schwaiger, Hans F, Tailpied, Dorianne, Talmadge, Carrick, Vidot, Jérôme, Webster, Jeremy, Wilson, David C

“…The 15 January 2022 climactic eruption of Hunga volcano, Tonga, produced an explosion in the atmosphere of a size that has not been documented in the modern…”
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Investigating Ionospheric Perturbations Following the 2020 Beirut Explosion Event by Jonah, Olusegun F., Vergados, Panagiotis, Krishnamoorthy, Siddharth, Komjathy, Attila

“…We assess the detection of the August 4, 2020 chemical explosion in Beirut, Lebanon (33°N, 35°E). We use ionospheric total electron content (TEC) observations…”
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Equatorial Intraseasonal Temperature Oscillations in the Lower Thermosphere From SABER by Vergados, Panagiotis, Liu, Guiping, Mannucci, Anthony J., Janches, Diego

“…We analyze the spatial‐temporal variability of the mesosphere/lower thermosphere (MLT) temperature at ±15N/S over 14 years, using measurements from the…”
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Assessing the performance of GPS radio occultation measurements in retrieving tropospheric humidity in cloudiness: A comparison study with radiosondes, ERA-Interim, and AIRS data sets by Vergados, Panagiotis, Mannucci, Anthony J., Ao, Chi O.

“…We assess the impact that the Global Positioning System radio occultations (GPSRO) measurements have on complementing different data sets in characterizing the…”
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The GUARDIAN system-a GNSS upper atmospheric real-time disaster information and alert network by Martire, Léo, Krishnamoorthy, Siddharth, Vergados, Panagiotis, Romans, Larry J., Szilágyi, Béla, Meng, Xing, Anderson, Jeffrey L., Komjáthy, Attila, Bar-Sever, Yoaz E.

“…We introduce GUARDIAN, a near-real-time (NRT) ionospheric monitoring software for natural hazards warning. GUARDIAN’s ultimate goal is to use NRT total…”
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Latitudinal, solar, and vertical variability of higher-order ionospheric effects on atmospheric parameter retrievals from radio occultation measurements: HIGHER-ORDER IONOSPHERIC EFFECTS by Vergados, Panagiotis, Pagiatakis, Spiros D.

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Using GPS radio occultations to infer the water vapor feedback by Vergados, Panagiotis, Mannucci, Anthony J., Ao, Chi O., Fetzer, Eric J.

“…The air refractive index at L‐band frequencies depends on the air's water vapor content and density. Exploiting this relationship, we derive for the first time…”
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Prospects for meteotsunami detection in earth’s atmosphere using GNSS observations by Vergados, Panagiotis, Krishnamoorthy, Siddharth, Martire, Léo, Mrak, Sebastijan, Komjáthy, Attila, Morton, Yu T. Jade, Vilibić, Ivica

“…We study, for the first time, the physical coupling and detectability of meteotsunamis in the earth’s atmosphere. We study the June 13, 2013 event off the US…”
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Enabling Mars Radio Occultation by Smallsats by Sweeney, David, Ao, Chi, Vergados, Panagiotis, Renno, Nilton, Kass, David, Martinez, German

“…We introduce a Mars Radio Occultation (RO) mission concept leveraging on small satellite (smallsat) technologies that will enable measurements that address…”
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An assessment of reprocessed GPS/MET observations spanning 1995–1997 by Mannucci, Anthony J, Ao, Chi O, Iijima, Byron A, Meehan, Thomas K, Vergados, Panagiotis, Kursinski, E. Robert, Schreiner, William S

“…We have performed an analysis of reprocessed GPS/MET data spanning 1995–1997 generated by the COSMIC Data Analysis and Archive Center (CDAAC) in 2007. CDAAC…”
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Latitudinal, solar, and vertical variability of higher-order ionospheric effects on atmospheric parameter retrievals from radio occultation measurements by Vergados, Panagiotis, Pagiatakis, Spiros D.

“…During Global Positioning System radio occultations (GPS/RO), the GPS signals always travel, at least partially, through the Earth's ionosphere. Hence, all…”
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Electron number density profiles derived from radio occultation on the CASSIOPE spacecraft by Shume, Esayas B., Vergados, Panagiotis, Komjathy, Attila, Langley, Richard B., Durgonics, Tibor

“…This paper presents electron number density profiles derived from high‐resolution Global Positioning System (GPS) radio occultation (RO) observations performed…”
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Characterization of the impact of GLONASS observables on receiver bias estimation for ionospheric studies by Vergados, Panagiotis, Komjathy, Attila, Runge, Thomas F., Butala, Mark D., Mannucci, Anthony J.

“…This study investigates the impact of including the Russian Globalnaya Navigazionnaya Sputnikovaya Sistema (GLONASS) and Global Positioning System (GPS)…”
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