A comparison of ionosonde measured foF2 and IRI-2016 predictions over China

Liu, Zhendi; Fang, Hanxian; Weng, Libin; Sicheng, Wang; Niu, Jun; Meng, Xing

doi:10.1016/j.asr.2019.01.017

Cited by 38 publications

(20 citation statements)

References 30 publications

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“…For hmF2, BSE-1979, AMTB-2013 and SHU-2015 model options are run. The comparisons are performed as where hmF2 iri is the data set of IRI-2016 hmF2 and hmF2 I denotes the data set of ionosonde hmF2, similar to those in Liu et al, 2019).…”

Section: Description Of Data and Comparison Methodsmentioning

confidence: 99%

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Comparison of IRI‐2016 F2 Layer Model Parameters with Ionosonde Measurements

2019

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International Reference Ionosphere (IRI) is the international standard ionospheric climatic model. Since the original formation of the international task force in 1970s, the IRI model has been continuously improved by ingesting developments in research in ionosphere. The most current version, namely, IRI‐2016, is offered with International Radio Consultative Committee (CCIR) and International Union of Radio Science (URSI) model choices with “STORM” option for the F2 layer critical plasma frequency (foF2) and BSE‐1979, AMTB‐2013, and SHU‐2015 options for maximum ionization height, hmF2. Since these two parameters are the determining values for the other model outputs, the evaluation of the options offered by IRI‐2016 is critical for various applications. In this study, all foF2 and hmF2 model options offered online at http://irimodel.org are computed for winter and summer solstice and equinox seasons of 2011 and 2015 at the locations of all available ionosondes and for all measurement intervals. The ionosondes are grouped into northern and southern midlatitude, northern and southern high‐latitude and equatorial regions. Individual, regional and global model output foF2 and hmF2 values are compared with those of ionosondes in both root‐mean‐square (RMS) and normalized RMS (NRMS) senses. For foF2, “STORM ON” can be used any time and in any region. Equatorial and high‐latitude regions have larger RMS values due to the sparse ionosondes. In northern midlatitude and high‐latitude regions URSI, in all other regions CCIR is the better option. For hmF2, SHU‐2015 and BSE‐1979 options provide a better fit for all regions, seasons, and years.

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Section: Description Of Data and Comparison Methodsmentioning

confidence: 99%

“…Studies, such as (Ameen et al, 2018;Bilitza et al, 2017;Lemma et al, 2019;Liu et al, 2019;Rao et al, 2018) to name just a few, used the latest IRI-2016 model for comparisons with ionosonde results. It has been observed that the general performance of IRI-2016 has been improved compared to previous IRI models.…”

Section: Introductionmentioning

confidence: 99%

Comparison of IRI‐2016 F2 Layer Model Parameters with Ionosonde Measurements

2019

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“…In Europe, Maltseva and Poltavsky (2009) investigated several aspects of the IRI accuracy and efficiency for long term prediction of the foF2 and the maximum usable frequencies (MUF) using the stormtime correction option, TEC, and the maximum observable frequency (MOF) for the year 2005. In China, Zhao et al (2017) used hmF2 data derived by ionosondes at Mohe, Beijing, Wuhan and Sanya ranging from year 2007 to 2016 to assess the performance of the three options for the IRI-hmF2, while Liu et al (2019) Data used in this work were collected in geomagnetic quiet days (∑ Kp ≤ 24, where ∑ Kp is the sum of the eight 3-h Kp indices for the day) from September 2017 to August 2018. The period is characterized by a very low level of solar and magnetic activity.…”

Section: Introductionmentioning

confidence: 99%

Performance of the IRI-2016 at the Brazilian low-latitude ionosphere over the South America Magnetic Anomaly during solar minimum

Moro

Nardin

et al. 2019

Preprint

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Abstract. In this work we analyse the ionograms obtained by the recent Digisonde installed in Santa Maria (29.7º S, 53.7º W, dip angle = − 37º), Brazil, to calculate the monthly averages of the F2 layer critical frequency (foF2), its peak height (hmF2), and the E-region critical frequency (foE) acquired during geomagnetically quiet days from September 2017 to August 2018. The monthly averages are compared to the 2016 version of the International Reference Ionosphere (IRI) model predictions in order to study its performance close to the center of the South America Magnetic Anomaly (SAMA), which is a region particularly important for High Frequency (HF) ground-to-satellite navigation signals. The foF2 estimated with the Consultative Committee International Radio (CCIR) and International Union of Radio Science (URSI) options predicts well throughout the year. Whereas, for hmF2, it is recommended to use the SHU-2015 option instead of the other available options (AMTB2013 and BSE-1979). The IRI-2016 model outputs for foE and the observations presented very good agreements.

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“…In the Brazilian equatorial region, CCIR performs better, while in the SAMA region there are no appreciable differences between both. In China, Liu et al (2019) found that the CCIR performs better than URSI during post-sunset under low solar activity or in the EIA region. For other times and outside the EIA region over China CCIR shows no large difference in performance as compared to URSI.…”

Section: Discussionmentioning

confidence: 99%

“…Bertoni et al (2006 used foF2 and hmF2 measured by two digital ionosondes installed at two Brazilian low-latitude stations in July 2003, October 2003, January 2004, and April 2004 IRI-2007IRI- during low (1987 and high (1990) solar activity, and undisturbed conditions for four different seasons. In Europe, Maltseva and Poltavsky (2009) investigated several aspects of the IRI accuracy and efficiency for long-term prediction of the foF2 and the maximum usable frequencies (MUF) using the storm-time correction option, TEC, and the maximum observable frequency (MOF) for the year 2005. In China, Zhao et al (2017) (UFSM).…”

Section: Introductionmentioning

confidence: 99%

Performance of the IRI-2016 over Santa Maria, a Brazilian low-latitude station located in the central region of the South American Magnetic Anomaly (SAMA)

Moro

Denardini

et al. 2020

Ann. Geophys.

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Abstract. In this work we analyze the ionograms obtained by the recent digisonde installed in Santa Maria (29.7∘ S, 53.7∘ W, dip angle = −37∘), Brazil, to calculate the monthly averages of the F2 layer critical frequency (foF2), its peak height (hmF2), and the E-region critical frequency (foE) acquired during geomagnetically quiet days from September 2017 to August 2018. The monthly averages are compared to the 2016 version of the International Reference Ionosphere (IRI) model predictions in order to study its performance close to the center of the South America Magnetic Anomaly (SAMA), which is a region particularly important for high-frequency (HF) ground-to-satellite navigation signals. The foF2 estimated with the Consultative Committee International Radio (CCIR) and International Union of Radio Science (URSI) options makes good predictions throughout the year, whereas, for hmF2, it is recommended to use the SHU-2015 option instead of the other available options (AMTB2013 and BSE-1979). The IRI-2016 model outputs for foE and the observations presented very good agreement.

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A comparison of ionosonde measured foF2 and IRI-2016 predictions over China

Cited by 38 publications

References 30 publications

Comparison of IRI‐2016 F2 Layer Model Parameters with Ionosonde Measurements

Comparison of IRI‐2016 F2 Layer Model Parameters with Ionosonde Measurements

Performance of the IRI-2016 at the Brazilian low-latitude ionosphere over the South America Magnetic Anomaly during solar minimum

Performance of the IRI-2016 over Santa Maria, a Brazilian low-latitude station located in the central region of the South American Magnetic Anomaly (SAMA)

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