1 - RAW IONOGRAMS AND AUTOSCALED PARAMETERS

NAME:

DOI (DIGITAL OBJECT IDENTIFIER):

Electronic Space Weather upper atmosphere database (eSWua) - HF data, version 1.0

https://doi.org/10.13127/eswua/hf

BIBLIOGRAPHIC CITATION:

COMPLETE METADATA:

Upper atmosphere physics and radiopropagation Working Group; Marcocci, C.; Pezzopane, M.; Pica, E.; Romano, V.; Sabbagh, D.; Scotto, C.; Zuccheretti, E. Electronic Space Weather Upper Atmosphere Database (eSWua) - HF Data, Version 1.0. Istituto Nazionale di Geofisica e Vulcanologia (INGV) August 1, 2020. https://doi.org/10.13127/ESWUA/HF.

Please note that the collection consists of data and instruments which could be property of the INGV as well as of other Institutions which share and distribute their data through the eSWua system; in the latter case we kindly ask you to also acknowledge the Institution owner of the data. The list of the instruments and related owning Institutions is available here.


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DATA COLLECTION DESCRIPTION:

The eSWua (electronic Space Weather upper atmosphere) database contains the near-real time and historical data originated from the instruments of the INGV Ionospheric Monitoring Network, and all the related scientific products developed by the "Upper atmosphere physics and radiopropagation" INGV group. This collection includes the data acquired by the ground-based Ionosondes, among which the Advanced Ionospheric Sounder (AIS), completely designed and developed at INGV, and the Lowell Digisonde. The ionospheric soundings began at INGV with one of the first ionospheric observatory in the world, operating in Rome since 1947, and currently are carried out in several locations by other Ionosondes pertaining to the network. The raw data, acquired 24/7, are remotely processed by dedicated software (Autoscala, developed at INGV for the AIS, and Artist for the Digisonde) and managed in near-real time by the eSWua system at the INGV headquarter. This collection makes available to the users the raw and level-I data derived from these soundings (ionograms, autoscaled parameters, ionospheric maps, etc.), harmonized among the different instruments and distributed in an open format.

AUTHORS AND CONTRIBUTORS:

NAME:

ROLE:

ID:

Carlo Marcocci Author, DataManager orcid
Michael Pezzopane Author, Researcher orcid
Emanuele Pica Author, DataManager orcid
Vincenzo Romano Author, RelatedPerson orcid
Dario Sabbagh Author, DataCurator orcid
Carlo Scotto Author, DataCurator orcid
Enrico Zuccheretti Author, DataCurator orcid
Cesidio Bianchi Contributor, RelatedPerson orcid
Ingrid Hunstad Contributor, ProjectMember orcid
Andrea Malagnini Contributor, ProjectMember orcid
Antonio Meloni Contributor, RelatedPerson orcid
Silvia Pau Contributor, ProjectMember orcid
Loredana Perrone Contributor, Researcher orcid
Marco Pietrella Contributor, Researcher orcid
Simone Vecchi Contributor, ProjectMember orcid
Bruno Zolesi Contributor, RelatedPerson -
Istituto Nazionale di Geofisica e Vulcanologia (INGV) Contributor, RightsHolder orcid

CONTACT:

eswua@ingv.it


2 - IONOSONDES MANUALLY VALIDATED DATA - YEARBOOKS - BI MONTHLY BULLETTINS

NAME:

DOI (DIGITAL OBJECT IDENTIFIER):

Electronic Space Weather upper atmosphere database (eSWua) - HF validated data

https://doi.org/10.13127/eswua/hfvalidated

BIBLIOGRAPHIC CITATION:

COMPLETE METADATA:

Upper atmosphere physics and radiopropagation Working Group, Cossari, A., Fontana, G., Marcocci, C., Pau, S., Pezzopane, M., Pica, E., & Zuccheretti, E. (2020). Electronic Space Weather upper atmosphere database (eSWua) - HF validated data (1.0). Istituto Nazionale di Geofisica e Vulcanologia (INGV). https://doi.org/10.13127/ESWUA/HFVALIDATED.

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INGV data portal

ISO19115

DATA COLLECTION DESCRIPTION:

The eSWua (electronic Space Weather upper atmosphere) database contains the near-real time and historical data originated from the instruments of the INGV Ionospheric Monitoring Network, and all the related scientific products developed by the "Upper atmosphere physics and radiopropagation" INGV group. This collection cover the manually validated data of the ionosondes of Roma and Gibilmanna, the Yearbooks of the ionospheric observatories (since 2003) of Roma and Gibilmanna and the bi-monthly bulletins (since 2015) of Ionospheric forecast which are used for radiocommunication services in the HF band (from 2 to 30 MHz) within the geographical area including Central Europe and the Mediterranean Sea.

AUTHORS AND CONTRIBUTORS:

NAME:

ROLE:

ID:

Antonio Cossari Author, DataCurator -
Giulio Fontana Author, DataCurator -
Carlo Marcocci Author, DataManager orcid
Silvia Pau Author, DataCurator orcid
Michael Pezzopane Author, Researcher orcid
Emanuele Pica Author, DataManager orcid
Enrico Zuccheretti Author, DataCurator orcid
Cesidio Bianchi Contributor, RelatedPerson orcid
Andrea Malagnini Contributor, DataCurator orcid
Antonio Meloni Contributor, RelatedPerson orcid
Loredana Perrone Contributor, Researcher orcid
Marco Pietrella Contributor, Researcher orcid
Dario Sabbagh Contributor, Researcher orcid
Carlo Scotto Contributor, Researcher orcid
Vincenzo Romano Contributor, RelatedPerson orcid
Bruno Zolesi Contributor, RelatedPerson -
Simone Vecchi Contributor, ProjectMember orcid
Giuseppe Tutone Contributor, RelatedPerson -
Istituto Nazionale di Geofisica e Vulcanologia (INGV) Contributor, RightsHolder orcid

CONTACT:

eswua@ingv.it





DATA ACCESS AND POLICY

DATA LICENSE:

These data are owned by the Istituto Nazionale di Geofisica e Vulcanologia (INGV) and distributed under a Creative Commons Attribution 4.0 International (CC BY 4.0).
YOU ARE FREE TO:

Share — copy and redistribute the material in any medium or format.
Adapt — remix, transform, and build upon the material for any purpose, even commercially.
YOU MUST:

Give appropriate credit by using the provided citation.


DISCLAIMER:

Any risk due to improper use of these data falls under the responsibility of the individual user. In no case and way INGV will be responsible for direct, indirect, voluntary or accidental damages, including lost profits, deriving from the use of the data even if INGV was advised of this possibility.

DATA ACCESS:


Open the "Download tool" page to retrieve the data with the guided procedure

Open the eSWua Web-service guide for adavanced data access

Map of the station and historical data availability

Access the page of the bi-monthly bulletins of Ionospheric forecast (since 2015).

Access the page of the yearbooks of the Roma ionospheric observatories (since 2003).

Access the page of the yearbooks of the Gibilmanna ionospheric observatories (since 2003).







DATA SPECIFICATION

IONOSONDE STATION DATA

A B C D E F
1
STATION CODE INSTRUMENT AVAILABLE DATA UPDATE RATE WEB SERVICE ENDPOINT EXAMPLE
2
rm041 AIS-INGV Ionosonde LEVEL-I (Autoscaled parameters) Soundings performed each 15 minutes, 24/7 (if station is active) http://ws-eswua.rm.ingv.it/ais.php/records/wsrm041_auto?filter=dt,eq,2022-07-15%2012:00:00
3
LEVEL-0 (Raw ionograms) http://ws-eswua.rm.ingv.it/ais.php/records/rm041_rdf?filter=dt,eq,2022-07-15%2012:00:00
4
LEVEL-II (Manually validated parameters) http://ws-eswua.rm.ingv.it/ais.php/records/rm041_rev?filter=dt,eq,2021-05-15%2012:00:00
5
gm037 AIS-INGV Ionosonde LEVEL-I (Autoscaled parameters) Soundings performed each 15 minutes, 24/7 (if station is active) http://ws-eswua.rm.ingv.it/ais.php/records/wsgm037_auto?filter=dt,eq,2022-07-15%2012:00:00
6
LEVEL-0 (Raw ionograms) http://ws-eswua.rm.ingv.it/ais.php/records/gm037_rdf?filter=dt,eq,2022-07-15%2012:00:00
7
LEVEL-II (Manually validated parameters) http://ws-eswua.rm.ingv.it/ais.php/records/gm037_rev?filter=dt,eq,2018-05-15%2012:00:00
8
tuj2o AIS-INGV Ionosonde LEVEL-I (Autoscaled parameters) Soundings performed each 10 minutes, 24/7 (if station is active) http://ws-eswua.rm.ingv.it/ais.php/records/wstuj2o_auto?filter=dt,eq,2022-06-15%2012:00:00
9
LEVEL-0 (Raw ionograms) http://ws-eswua.rm.ingv.it/ais.php/records/tuj2o_rdf?filter=dt,eq,2022-06-15%2012:00:00
10
bbj3r AIS-INGV Ionosonde LEVEL-I (Autoscaled parameters) Soundings performed each 10 minutes, 24/7 (if station is active) http://ws-eswua.rm.ingv.it/ais.php/records/wsbbj3r_auto?filter=dt,eq,2022-07-15%2012:00:00
11
LEVEL-0 (Raw ionograms) http://ws-eswua.rm.ingv.it/ais.php/records/bbj3r_rdf?filter=dt,eq,2022-07-15%2012:00:00
12
ro041 DPS-4 LEVEL-I (Autoscaled parameters) Soundings performed each 15 minutes, 24/7 (if station is active) http://ws-eswua.rm.ingv.it/ais.php/records/wsro041_auto?filter=dt,eq,2022-07-15%2012:00:00

PRODUCTS SPECIFICATION

PRODUCT:

Nowcasting of MUF(3000)F2 over Europe

CODE:

ncmv0

WEB-SERVICE ENDPOINT (EXAMPLE):

http://ws-eswua.rm.ingv.it/ais.php/records/ncmv0?filter=dt,eq,2022-09-07%2014:00

PRODUCT DESCRIPTION:

The near real-time maps of MUF(3000) are estimated every 15 minutes from real-time ionosonde data recorded at several stations over Europe. Such measurements are integrated into the International Reference Ionosphere (IRI) background model, which is upgraded starting from the relative deviations at the stations. Kriging techniques are then applied for spatial interpolation. The considered ionosonde stations are the following:
Pruhonice (50.0, 14.60)
Rome (41.8, 12.5)
Gibilmanna (37.9, 14.0)
Niocosia (35.14,33.48)
Dourbes (50.1, 4.60)
Warsaw (52.21, 21.06)

THRESHOLDS:

Please refer to the produtc 'Nowcasting of MUF(3000)F2 ratio over Europe'.

SPATIAL ASPECT:

Coverage: Europe 12W-45.5E ;32N-72.5N
Resolution: 0.5 degree x 0.5 degree.

TIME ASPECT:

Update Rate: 15 min
Latency: 2 min
Integration Time: n/a
Predicted Time: n/a

PRODUCT:

Nowcasting of MUF(3000)F2 ratio over Europe

CODE:

ncmr0

WEB-SERVICE ENDPOINT (EXAMPLE):

http://ws-eswua.rm.ingv.it/ais.php/records/ncmr0?filter=dt,eq,2022-09-07%2014:00

PRODUCT DESCRIPTION:

This product is the ratio between the nowcasted MUF(3000) derived from real-time ionosonde data and the background. The background is the MUF monthly median derived from the International Reference Ionosphere Model (IRI). The considered ionosonde stations are the following:
Pruhonice (50.0, 14.60)
Rome (41.8, 12.5)
Gibilmanna (37.9, 14.0)
Niocosia (35.14,33.48)
Dourbes (50.1, 4.60)
Warsaw (52.21, 21.06)

THRESHOLDS:

Quiet:
MUF(3000)F2 ratio > 0.7

(no MUF depression or MUF depression < 30% from the modelled median value)

Moderate ionospheric disturbance:
0.5 < MUF(3000)F2 ratio <= 0.7

(30% < MUF depression < 50% from the modelled median value)

Severe ionospheric disturbance:
MUF(3000)F2 ratio <= 0.5

(MUF depression > 50% from the modelled median value);

SPATIAL ASPECT:

Coverage: Europe 12W-45.5E ;32N-72.5N
Resolution: 0.5 degree x 0.5 degree.

TIME ASPECT:

Update Rate: 15 min
Latency: 2 min
Integration Time: n/a
Predicted Time: n/a

PRODUCT:

Short Term Forecasting of MUF(3000)F2 over Europe

CODE:

fcmv0

WEB-SERVICE ENDPOINT (EXAMPLE):

http://ws-eswua.rm.ingv.it/ais.php/records/fcmv0?filter=dt_valid,eq,2022-09-07%2014:00&order=dt,desc

PRODUCT DESCRIPTION:

Result from EUROMAP, a model to forecast Maximum Usable Frequency (MUF) at a distance=3000km over Europe. The input driving parameter are 3h ap indices, converted in ap(τ), effective ionospheric T index, and real-time foF2 observations. The method includes local (for each station) regression storm models to describe strong negative disturbances under ap(τ)>30 and training over previous 28-day models to describe foF2 variations under ap(τ)≤ 30. Index T is used to specify the background level.

THRESHOLDS:

Please refer to the produtc 'Short Term Forecasting of MUF(3000)F2 ratio over Europe'.

SPATIAL ASPECT:

Coverage: Europe 40W-100E ;20N-80N
Resolution: 2.5 degree x 2.5 degree.

TIME ASPECT:

Update Rate: 60 min
Latency: 15 min
Integration Time: n/a
Predicted Time: 1-24 hr

PRODUCT:

Short Term Forecasting of MUF(3000)F2 ratio over Europe

CODE:

fcmr0

WEB-SERVICE ENDPOINT (EXAMPLE):

http://ws-eswua.rm.ingv.it/ais.php/records/fcmr0?filter=dt_valid,eq,2022-09-08%2014:00&order=dt,desc

PRODUCT DESCRIPTION:

This product is the ratio between the forecasted MUF(3000) derived from EUROMAP model and the background. The background is the MUF monthly median derived from the International Reference Ionosphere Model (IRI). The input driving parameter for IRI is the R12 index while for EUROMAP are 3h ap indices, converted in ap(τ), effective ionospheric T index, and real-time foF2 observations.

THRESHOLDS:

Quiet:
MUF(3000)F2 ratio > 0.7

(no MUF depression or MUF depression < 30% from the modelled median value)

Moderate ionospheric disturbance:
0.5 < MUF(3000)F2 ratio <= 0.7

(30% < MUF depression < 50% from the modelled median value)

Severe ionospheric disturbance:
MUF(3000)F2 ratio <= 0.5

(MUF depression > 50% from the modelled median value);

SPATIAL ASPECT:

Coverage: Europe 40W-100E ;20N-80N
Resolution: 2.5 degree x 2.5 degree.

TIME ASPECT:

Update Rate: 60 min
Latency: 15 min
Integration Time: n/a
Predicted Time: 1-24 hr


DATA GLOSSARY

A B C D E F
1
FIELD NAME DESCRIPTION MEASUREMENT UNIT TYPE
RELATED TO INSTRUMENTS
ELABORATION LEVEL
2
aip_b0 B0 - Thickness parameter (Adaptive Ionospheric Profiler, AIP) km single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
3
aip_b1 Shape parameter (Adaptive Ionospheric Profiler, AIP) - single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
4
aip_d1 Shape parameter (Adaptive Ionospheric Profiler, AIP) - single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
5
aip_deln_ve E valley depth (Adaptive Ionospheric Profiler, AIP) m^-3 single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
6
aip_ewidth E valley width (Adaptive Ionospheric Profiler, AIP) km single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
7
aip_foe Critical frequency of the E-layer(Adaptive Ionospheric Profiler, AIP) MHz single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
8
aip_fof1 Critical frequency of the F1-layer (Adaptive Ionospheric Profiler, AIP) MHz single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
9
aip_fof2 Critical frequency of the F2-layer (Adaptive Ionospheric Profiler, AIP) MHz single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
10
aip_h_ve Height of the E valley point (Adaptive Ionospheric Profiler, AIP) km single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
11
aip_hme Height of the maximum electron density of the E layer (Adaptive Ionospheric Profiler, AIP) km single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
12
aip_hmf1 Height of the maximum electron density of the F1 layer (Adaptive Ionospheric Profiler, AIP) km single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
13
aip_hmf2 Height of the maximum electron density of F2 layer (Adaptive Ionospheric Profiler, AIP) km single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
14
aip_yme Parabolic E layer semi-thickness (Adaptive Ionospheric Profiler, AIP) km single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
15
att_ext internal receiver attenuation - single value AIS-INGV Ionosonde LEVEL-0 (Raw)
16
att_int external receiver attenuation - single value AIS-INGV Ionosonde LEVEL-0 (Raw)
17
comment_man - single value AIS-INGV Ionosonde LEVEL-0 (Raw)
18
dsp_ver - single value AIS-INGV Ionosonde LEVEL-0 (Raw)
19
dt measurement time/generation time UTC timestamp single value AIS-INGV Ionosonde, DPS-4, HF maps -
19
dt_valid In case of HF map it report the timestamp to which the data refer timestamp single value HF MAPS -
20
fbes fbEs - blanketing frequency of Es layer MHz single value AIS-INGV Ionosonde LEVEL-II (Validated)
21
fbes_qual / fbes_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
22
fmin The minimum frequency reflected by the ionosphere MHz single value AIS-INGV Ionosonde LEVEL-II (Validated)
23
fmin_qual / fmin_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
24
foe foE - Critical frequency of the E-layer MHz single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
25
foe_qual / foe_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
26
foes foEs - Critical frequency of the Sporadic E-layer MHz single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
27
foes_qual / foes_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
28
fof1 foF1 - Critical frequency of the F1-layer MHz single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
29
fof1_qual / fof1_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
30
fof2 foF2 - Critical frequency of the F2-layer MHz single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
30
fof2_med_27_days 27 days median of the foF2 MHz single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled)
31
fof2_qual / fof2_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
32
freq_end End frequency of the sounding MHz single value AIS-INGV Ionosonde LEVEL-0 (Raw)
33
freq_gyro Gyrofrequency MHz single value AIS-INGV Ionosonde LEVEL-0 (Raw)
34
freq_start Starting frequency of the sounding MHz single value AIS-INGV Ionosonde LEVEL-0 (Raw)
35
freq_step Frequency step of the sounding MHz single value AIS-INGV Ionosonde LEVEL-0 (Raw)
36
ftes Maximum frequency reflected by the sporadic-E layer MHz single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
37
fxi fxI : Maximum frequency of F-trace MHz single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
38
fxi_qual / fxi_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
39
h_e h'E - Minimum virtual height of E-layer km single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
40
h_e_qual / h_e_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
41
h_es h'Es - Minimum virtual height of Sporadic E-layer km single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
42
h_es_qual / h_es_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
43
h_f h'F - Minimum virtual height of F-layer km single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
44
h_f_qual / h_f_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
45
h_f2 h'F2 - Minimum virtual height of F2-layer km single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
46
h_f2_qual / h_f2_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
47
height_end Max height of the sounding km single value AIS-INGV Ionosonde LEVEL-0 (Raw)
48
height_start Min height of the sounding km single value AIS-INGV Ionosonde LEVEL-0 (Raw)
49
height_step Height step of the sounding km single value AIS-INGV Ionosonde LEVEL-0 (Raw)
50
high high portion of word for filtering echoe - single value AIS-INGV Ionosonde LEVEL-0 (Raw)
51
int_n integrations of the received signal - single value AIS-INGV Ionosonde LEVEL-0 (Raw)
52
ionogram Raw ionogram - points matrix (heights / frequencies coordinates with echo amplitude values) AIS-INGV Ionosonde LEVEL-0 (Raw)
2
jfile HF maps MHz or adimensional (for ratio maps) points matrix (latitudes / longitudes coordinates with values) HF maps
53
low low portion of word for filtering echoe - single value AIS-INGV Ionosonde LEVEL-0 (Raw)
54
m3000f2 Propagation factor defined as the ratio of the maximum usable frequency, reflecting on the F2 layer, at a distance of 3000 km to the F2 layer critical frequency, foF2 - single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
55
m3000f2_qual / m3000f2_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
56
mag_inclination Magnetic inclination degrees single value AIS-INGV Ionosonde LEVEL-0 (Raw)
57
math_ampli Mathematical amplification for correlation process - single value AIS-INGV Ionosonde LEVEL-0 (Raw)
58
profile Electron density profile - trace points (height-frequency coordinates) AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled)
59
muf3000f1 Maximum Usable Frequency, reflecting on the F1 layer, for a 3000 km range circuit MHz single value AIS-INGV Ionosonde LEVEL-II (Validated)
60
muf3000f1_qual / muf3000f1_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
61
muf3000f2 Maximum Usable Frequency, reflecting on the F2 layer, for a 3000 km range circuit MHz single value AIS-INGV Ionosonde, DPS-4 LEVEL-I (Autoscaled) / LEVEL-II (Validated)
62
muf3000f2_qual / muf3000f2_desc Qualitative/Descriptive letters for the previous parameter (see TABLE 1) - character AIS-INGV Ionosonde LEVEL-II (Validated)
63
tec Total Electron Content TECu single value DPS-4 LEVEL-I (Autoscaled)
64
tec_bottom Total Electron Content (bottom) TECu single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
65
tec_top Total Electron Content (top) TECu single value AIS-INGV Ionosonde LEVEL-I (Autoscaled)
66
trace_e Reconstructed E-layer - trace points (heights / frequencies coordinates) DPS-4 LEVEL-I (Autoscaled)
67
trace_es Reconstructed Es-layer - trace points (heights / frequencies coordinates) DPS-4 LEVEL-I (Autoscaled)
68
trace_f1 Reconstructed F1-layer - trace points (heights / frequencies coordinates) DPS-4 LEVEL-I (Autoscaled)
69
trace_f2 Reconstructed F2-layer - trace points (heights / frequencies coordinates) DPS-4 LEVEL-I (Autoscaled)
70
trace Reconstructed trace - trace points (heights / frequencies coordinates) AIS-INGV Ionosonde LEVEL-I (Autoscaled)
71
type_es Description of the Es layer (see TABLE 2) - alphanumeric AIS-INGV Ionosonde LEVEL-II (Validated)
72
73
74
TABLE 1: Qualifying and descriptive letters for the LEVEL-II (manually validated) data
75
Letter Type Description
76
A qualifying letters smaller than (used only for fbEs in case of total blanketing)
77
descriptive letters measurement influenced by or impossible because of the presence of a lower layer, for example Ex
78
B descriptive letters measurement influenced by or impossible because of absorption near the minimum frequency
79
C descriptive letters measurement influenced by or impossible because of a non-ionospheric reason
80
D qualifying letters greater than
81
descriptive letters measurement influenced by or impossible because of the upper limit of the frequency range
82
E qualifying letters smaller than
83
descriptive letters measurement influenced by or impossible because of lower limit of the frequency range
84
F descriptive letters measurement influenced by or impossible because of the presence of diffuse echoes
85
G descriptive letters measurement influenced by or impossible because of the ionization density of the reflective layer is insufficient to allow this measurement with precision.
86
H descriptive letters measurement influenced by or impossible because of the presence of stratifications
87
I qualifying letters interpolated value (the missing value is replaced by the interpolated value)
88
J qualifying letters ordinary component deducted from the extraordinary component
89
L descriptive letters measurement influenced by or impossible because of the trace does not have sufficiently sharp cusps between the layers
90
M qualifying letters uncertain interpretation (used when it is not possible to distinguish between the ordinary and extraordinary rays)
91
N descriptive letters the conditions are such that the measurement cannot be interpreted
92
O qualifying letters extraordinary component deducted from the ordinary component
93
descriptive letters the measurement refers to the ordinary component
94
Q descriptive letters presence of spread range or oblique spread
95
R descriptive letters measurement influenced by or impossible because of absorption in the vicinity of critical frequency
96
S descriptive letters measurement influenced by or impossible because of atmospheric disturbances or interference
97
T descriptive letters value determined by a sequence of observations being the measurement incompatible with the others or uncertain
98
U qualifying letters uncertain value (numerical value imprecise because there are conditions that make it difficult to scale the ionogram)
99
V descriptive letters forked trace which may influence the measurement
100
W descriptive letters measurement influenced by or impossible because the echo is beyond the upper height limit of the ionogram
101
X descriptive letters the measurement refers to the extraordinary component
102
Y descriptive letters lacuna phenomena or the presence of a strongly tilted layer
103
Z qualifying letters characteristic of the ordinary component deduced from the third magnetoionic component
104
descriptive letters presence of a third magnetoionic component
105
106
107
TABLE 2: Descriptions of the Es layer
108
Letter Description
109
C type of Es which presents a rather symmetrical cusp at a frequency equal to or lower than foE
110
F indicates a type of flat Es whose height does not change with frequency. It should only be used at night
111
L indicates a type of flat Es whose height does not change with frequency and is equal to or less than a E layer present in the ionogram. Typically used during the day
112
H describes an Es with a strongly discontinuous trace and with a height greater than the E layer one

DATA DISTRIBUTION FORMAT:

The data on the eSWua website are distributed in JSON format.
In a nutshell, a JSON is written as key/value pairs. A key/value pair consists of a field name (the key, representing a property or a parameter), followed by a colon, followed by its value. A JSON file is easy to read (human readable) and simple to manage and consume by most of the common scientific programming languages (machine readable). Further information on JSON format may be found here.


Extract of a JSON file containing autoscaled values from ionosondes:

{
"dt": "2022-07-15 12:00:00",
"fof2": "7.6",
"muf3000f2": "22.0",
"m3000f2": "2.89",
"fxi": "8.2",
}