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Report on 02/04/2025 13:54:02
cdaweb was referenced in 2 papers
spdf was referenced in 2 papers
space physics data facility was referenced in 2 papers
omni was referenced in 2 papers
omniweb was referenced in 4 papers
iri was referenced in 8 papers
international reference ionosphere was referenced in 7 papers
12 of 85 possible papers ( 14% ) contained references to SPDF keywords
Authors=Shammat, Mohamed O.; Reinisch, Bodo W.; Galkin, Ivan; Erickson, Philip J.; Weitzen, Jay A.; Rideout, William C.
Title=Characterizing Plasma Peak Density Thickness in the Ionosphere: A Single-Site Multi-Instrument Study, 2024, doi:10.1029/2023RS007658, ID=26806860
journal=Radio Science
Keywords found:iri
Sample usage ( BODY ) =Figure 8 shows computed PDT values on 22 June 2016 (blue line) versus the Digisonde-provided standard IRI parameter B 0 (Bilitza, 1990) that can be interpreted as a measure of the sub-peak F2 layer thickness: 1 N ( h ) N m F 2 = exp - x B 1 cosh ( x ) with x = h m F 2 - h B 0 \,\text{with}\,x=\frac{\left({h}_{\mathrm{m}}F2-h\right)}{{B}_{0}}\end{align*} 8 Figure The red line represents B 0 /4 where B 0 is the Digisonde bottomside thickness parameter and the blue line represents the measured Peak Density Thickness values.
Authors=Su, Yi-Jiun; Carilli, John A.; Parham, J. Brent; Chu, Xiangning; Galkin, Ivan A.; Ginet, Gregory P.
Title=Electron Density Specification in the Inner Magnetosphere From the Narrow Band Receiver Onboard DSX, 2024, doi:10.1029/2023RS007907, ID=27139173
journal=Radio Science
Keywords found:cdaweb, spdf, space physics data facility
Sample usage ( BODY ) =In fact, we initially used passive spectrograms from RPI to test a simple convolution neural network (Su Carilli, 2023) because the wave data with corresponding f pe and f ce are publicly available through the Coordinated Data Analysis Web (CDAWeb). Closer inspection of the CDAWeb data set revealed data noise due to the automatic analysis mishaps and notable time mismatches.
Sample usage ( BODY ) =Data Availability Statement The VAP and IMAGE wave data with associated electron densities, cyclotron frequencies, and satellite ephemeris were downloaded from the Coordinated Data Analysis Web (CDAWeb) hosted by the NASA Space Physics Data Facility (SPDF) ( n.d.), https://cdaweb.gsfc.nasa.gov .The EMFISIS level-4 data were downloaded with filename “rbsp-x-density_emfisis-l2_yyyymmdd_v1.5.xx.cdf,” while the HFR survey level-2 data were downloaded with filename “rbsp-x_hfr-spectra-emfisis-l2_yyyymmdd_v1.x.x.cdf.”
Authors=Ohya, H.; Suzuki, T.; Tsuchiya, F.; Nakata, H.; Shiokawa, K.
Title=Variation in the Reflection Height of VLF/LF Transmitter Signals in the D-Region Ionosphere and the Possible Source: A 2018 Meteoroid in Hokkaido, Japan, 2024, doi:10.1029/2023RS007801, ID=27496903
journal=Radio Science
Keywords found:omni, omniweb, iri, international reference ionosphere
Sample usage ( BODY ) =We used solar wind and geomagnetic field index data provided from NASA/GSFC’s OMNI data set ( https://omniweb.gsfc.nasa.gov/ow_min.html ). The Dst index used in this paper was provided by the WDC for Geomagnetism, Kyoto et al. ( 2015, http://wdc.kugi.kyoto-u.ac.jp/wdc/Sec3.html ).
Sample usage ( BODY ) =LANG=en ) operated by NIED, Japan. The IRI-2020 model is available at https://kauai.ccmc.gsfc.nasa.gov/instantrun/**iri**/ .
Sample usage ( BODY ) =Based on calculations using the Appleton-Hartree equation, the International Geomagnetic Reference Field 13, and the International Reference Ionosphere 2020 models (Ohya et al., 2006), the estimated reflection heights for transmitted frequencies of 22, 40, and 60 kHz were 85.8, 88.9, and 92.5 km, respectively.
Authors=Uga, Chali Idosa; Gautam, Sujan Prasad; Edward, Uluma; Adhikari, Binod; Teferi, Dessalegn; Giri, Ashutosh; Odhiambo, Athwart Davis; Olabode, Ayomide
Title=Variation in Total Electron Content Over Ethiopia During the Solar Eclipse Events, 2024, doi:10.1029/2023RS007830, ID=27836894
journal=Radio Science
Keywords found:omniweb
Sample usage ( ACK ) =Acknowledgments Authors are thankful to both data providers, the International GNSS Service, and the OMNIWeb Data Explorer for their publicly accessible data providing service.
Sample usage ( BODY ) =We also use the Operating Mission as Nodes on the Internet website system ( https://omniweb.gsfc.nasa.gov/ ) to access the data of the solar wind parameters such as z-component of interplanetary magnetic field (IMF Bz) and solar wind speed (Vsw), and geomagnetic indices, Kp, Ap, Dst, and AE, during the considered events.
Authors=Lv, Mingjie; Tang, Qiong; Qiao, Jiandong; Qiao, Wei; Zhou, Chen
Title=Statistical Analysis of Ionospheric Correlation for Shortwave System, 2024, doi:10.1029/2023RS007893, ID=27836926
journal=Radio Science
Keywords found:iri, international reference ionosphere
Sample usage ( BODY ) =Due to the limited number of stations in high latitudes and oceanic regions and large errors in measured data, only the ionospheric correlation distance in the middle and low magnetic latitudes (75degS-75degN) is calculated. IRI (international reference ionosphere) and NeQuick (Bilitza et al., 2011; Montenbruck Gonzalez Rodriguez, 2019) are commonly used empirical models of the ionosphere with fast calculation speeds, but their outputs are quite different from actual ionospheric conditions. Hence, based on VTEC data observed by GNSS and the IRI, the Kalman filter data assimilation method is used to assimilate ionospheric electron density, and construct a complete current report (forecast) model for background electron density of the ionosphere, which is known as multisource ionospheric assimilation data.
Authors=Cameron, T. G.; Fiori, R. A. D.; Perry, G. W.; Spicher, A.; Thayaparan, T.
Title=Statistical Analysis of Off-Great Circle Radio Wave Propagation in the Polar Cap, 2024, doi:10.1029/2023RS007897, ID=27836931
journal=Radio Science
Keywords found:cdaweb, space physics data facility, omni
Sample usage ( BODY ) =OMNI data can be accessed via NASA’s Coordinated Data Analysis Web ( https://cdaweb.gsfc.nasa.gov/ ). CHAIN ionosonde data can be found on the CHAIN website ( http://chain.physics.unb.ca/chain/pages/data\_download ).
Sample usage ( ACK ) =We acknowledge use of NASA/GSFC’s Space Physics Data Facility’s ftp service, and OMNI data. This is NRCan publication number 20220558.
Sample usage ( BODY ) =IMF B z and AE index data was obtained from the OMNI data set (King, 2005; King Papitashvili, 2020), while Eureka ionosonde data came from CHAIN (Jayachandran, Langley, et al., 2009). 2 Figure Summary plot of relevant interplanetary and ionospheric conditions for 07 November 2013.
Authors=Dear, Varuliantor; Arifianto, Mohammad Sigit; Abadi, Prayitno; Purnomo, Cahyo; Husin, Asnawi; Kurniawan, Adit; Iskandar, I. S.
Title=Ionospheric Channel Impulse Response Measurement System for NVIS Propagation Mode Over Java Island Based on Low-Cost SDR Platform, 2024, doi:10.1029/2023RS007877, ID=29160506
journal=Radio Science
Keywords found:iri, international reference ionosphere
Sample usage ( BODY ) =Those frequency variations are observed by ionosonde, and the data from ionosonde is used to build an empirical ionosphere model such as the International Reference Ionosphere (IRI) (Bilitza et al., 2022) and the Advanced Stand Alone Prediction System (ASAPS) (IPS, 2008).
Authors=Liu, Jialong; Song, Shuli; Cheng, Na; Zhu, Yongxing; Jin, Xulei; Huang, Chao; Jiang, Jun; Zhao, Hongzhan
Title=Analysis of Ionospheric Delay Correction Model Performance During Geomagnetic Storms, 2024, doi:10.1029/2023RS007803, ID=29541196
journal=Radio Science
Keywords found:spdf, omniweb, iri, international reference ionosphere
Sample usage ( BODY ) =Experimental Data The Dst data in this paper were obtained from the GSFC/SPDF OMNIWeb interface ( https://omniweb.gsfc.nasa.gov ) (Gonzalez et al., 1994).
Sample usage ( BODY ) =The carrier phase smoothing pseudorange extraction method is currently a more mainstream and highly accurate method. 1 Figure Distribution of Global Navigation Satellite System observatories. 1 Table Information Table of Same Longitude and Different Latitude Stations Station location Code Geographic Geomagnetic Dip (deg) Time (LT-UT) (hr) Latitude degN Longitude degE Latitude degN Longitude degE Greenland THU2 76.537 -68.825 85.70 12.07 85.25 -4.6 Canada BAIE 49.187 -68.263 58.28 5.49 71.08 -4.6 Dominican Republic RDSD 18.461 -69.911 27.65 2.95 43.75 -4.7 Peru AREG -16.465 -71.493 -7.05 1.13 -10.8 -4.8 Argentina RIO2 -53.785 -67.751 -44.32 4.07 -52 -4.5 Antarctica PALM -64.775 -64.051 -55.39 6.49 -58.7 -4.3 The IRI project, jointly initiated in 1960 with funding from the Committee on Space Research and the International Union of Radio Science, has continued to improve the IRI model since its inception, from IRI-78, IRI-85, IRI-1990, IRI-2000 to IRI-2007, IRI-2012, IRI-2016, and the latest version, IRI-2020 (Bilitza et al., 2016, 2022; Patari et al., 2021; Rawer et al., 1978). The IRI model provides both online and open-source calculations, and the ionospheric information can be obtained by entering the latitude, longitude, time, etc. ( https://kauai.ccmc.gsfc.nasa.gov/instantrun/**iri** ).
Sample usage ( BODY ) =In GNSS, the current mainstream ionospheric delay correction models can be divided into three categories: (a) Empirical models, such as the International Reference Ionosphere (IRI) model and the NeQuick model (Nava et al., 2008; Rawer et al., 1978); (b) Broadcast ionospheric models (BIM), such as the Klobuchar 8-parameter model of GPS (GPSK8), Galileo NeQuick 4-parameter model (NeQuickG), Klobuchar 8-parameter model of BeiDou satellite navigation system (BDSK8), and BeiDou global broadcast ionospheric delay correction model (BDGIM) (CSNO, 2017, 2019; ICD-GPS-200, 2012; OS-SIS-ICD, 2010); (c) Global ionospheric maps (GIMs) produced by eight International GNSS Service (IGS) ionospheric working group (Willis et al., 1999).
Authors=Ankita, M.; Tulasi Ram, S.
Title=A Software Tool for the True Height Analysis of Ionograms Using the Iterative Gradient Correction (IGC) Method, 2024, doi:10.1029/2024RS007955, ID=31603365
journal=Radio Science
Keywords found:international reference ionosphere
Sample usage ( BODY ) =It also provides useful information such as top-side profile scale height ( H T ), as well as the bottom-side thickness parameter (B0) and shape parameters (B1) defined as per the standards of International Reference Ionosphere model (Bilitza et al., 2014). This file acts as a structured repository, offering valuable data of 13 important ionospheric parameters such as h’E, hE, foE, hm’E, hmE, h’F, hF, foF2, h’mF2, hmF2, B0, B1, and H T .
Authors=Liu, B.; Perry, G. W.; Chartier, A. T.
Title=An Assessment of HF Radio Wave Propagation in Antarctica for a Radio Link Between McMurdo and South Pole Station, 2024, doi:10.1029/2022RS007632, ID=31603493
journal=Radio Science
Keywords found:iri, international reference ionosphere
Sample usage ( BODY ) =Research shows that by modifying the IRI input parameters, the IRI 2020 model performs better than most of the other models in estimating the ionospheric information in the polar-cap region (Shim et al., 2011, 2012; Shubin et al., 2013; Tsagouri et al., 2018).
Sample usage ( BODY ) =The ionosphere used by Pharlap is given by the International Reference Ionosphere (IRI) 2020 empirical model (Bilitza et al., 2017), which is an inbuilt function of the toolbox.
Authors=Tariku, Yekoye Asmare
Title=The Geomagnetic Storm Time Responses of the TEC, foF2, and hmF2 in Different Solar Activity During Solar Cycle 24 and 25, 2024, doi:10.1029/2024RS007961, ID=32517102
journal=Radio Science
Keywords found:omniweb, iri
Sample usage ( BODY ) =Data Availability Statement The GPS TEC ( https://www.unavco.org/data/gps-gnss/file-server/file-server.html ), digisonde ( https://giro.uml.edu/didbase/scaled.php ), online IRI-Plas 2017 ( http://www.ionolab.org/iriplasonline/ ) and online IRI 2016 ( https://ccmc.gsfc.nasa.gov/modelweb/models/iri2016\_vitmo.php ), solar and geomagnetic indices ( http://omniweb.gsfc.nasa.gov/form/dx1.html ) data utilized for the study are freely available.
Sample usage ( ACK ) =Acknowledgments The author is very grateful to UNAVCO, Global Ionospheric Radio Observatory (GIRO), IONOLAB, NASA for providing their GPS, digisonde data, online IRI-Plas 2017 and IRI 2016, solar and geomagnetic indices data, respectively.
Sample usage ( BODY ) =Furthermore, this research assesses the performance of the IRI 2016 and IRI-Plas 2017 models in estimating TEC, foF2, and hmF2 under various geomagnetic storm conditions from 2014 to 2021.
Sample usage ( ABSTRACT ) =This paper mainly examines the response of variation of the TEC, foF2, and hmF2 obtained from observations (GPS and digisondes) and models (IRI 2016 and IRI-Plas 2017) across low-to-high latitudes during various geomagnetic storm time conditions in different solar activity years.
Authors=Schreiter, Lucas; Brack, Andreas; Mannel, Benjamin; Schuh, Harald; Arnold, Daniel; Jaggi, Adrian
Title=Imaging of the Ionosphere and Plasmasphere Using GNSS Slant TEC Obtained From LEO Satellites, 2024, doi:10.1029/2024RS008058, ID=32517111
journal=Radio Science
Keywords found:iri, international reference ionosphere
Sample usage ( BODY ) =The agreement between sTEC observed by Jason-3 is not as well captured by the IRI-2020 model. A significant underestimation of the ionospheric gradients by IRI-2020 can be observed here.
Sample usage ( ABSTRACT ) =The model outperforms contemporary climatological models, such as International Reference Ionosphere (IRI)-2020 and the neural network-based NET model. Validation efforts include comparisons with ground-based sTEC measurements, space-based vertical TEC from Jason-3 altimetry, and global TEC maps from the Center for Orbit Determination in Europe and the German Research Center for Geosciences (GFZ).
Sample usage ( BODY ) =For an apriori estimate of the electron density, the International Reference Ionosphere (IRI)-2020 model with the cor2 option and plasmasphere extension is used (Bilitza et al., 2022).
