FIELD NAME |
DESCRIPTION |
MEASUREMENT UNIT |
TYPE |
RELATED TO INSTRUMENTS
|
ELABORATION LEVEL |
aip_b0 |
B0 - Thickness parameter (Adaptive Ionospheric Profiler, AIP)
|
km |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
aip_b1 |
Shape parameter (Adaptive Ionospheric Profiler, AIP)
|
- |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
aip_d1 |
Shape parameter (Adaptive Ionospheric Profiler, AIP)
|
- |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
aip_deln_ve |
E valley depth (Adaptive Ionospheric Profiler, AIP)
|
m^-3 |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
aip_ewidth |
E valley width (Adaptive Ionospheric Profiler, AIP)
|
km |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
aip_foe |
Critical frequency of the E-layer(Adaptive Ionospheric Profiler, AIP)
|
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
aip_fof1 |
Critical frequency of the F1-layer (Adaptive Ionospheric Profiler,
AIP)
|
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
aip_fof2 |
Critical frequency of the F2-layer (Adaptive Ionospheric Profiler,
AIP)
|
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
aip_h_ve |
Height of the E valley point (Adaptive Ionospheric Profiler, AIP)
|
km |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
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) |
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) |
aip_hmf2 |
Height of the maximum electron density of F2 layer (Adaptive
Ionospheric Profiler, AIP)
|
km |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
aip_yme |
Parabolic E layer semi-thickness (Adaptive Ionospheric Profiler, AIP)
|
km |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
att_ext |
internal receiver attenuation |
- |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
att_int |
external receiver attenuation |
- |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
comment_man |
|
- |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
dsp_ver |
|
- |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
dt |
measurement time/generation time UTC |
timestamp |
single value |
AIS-INGV Ionosonde, DPS-4, HF maps |
- |
dt_valid |
In case of HF map it report the timestamp to which the data refer |
timestamp |
single value |
HF MAPS |
- |
fbes |
fbEs - blanketing frequency of Es layer |
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
fbes_qual / fbes_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
fmin |
The minimum frequency reflected by the ionosphere
|
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
fmin_qual / fmin_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
foe |
foE - Critical frequency of the E-layer |
MHz |
single value |
AIS-INGV Ionosonde, DPS-4 |
LEVEL-I (Autoscaled) / LEVEL-II (Validated)
|
foe_qual / foe_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
foes |
foEs - Critical frequency of the Sporadic E-layer
|
MHz |
single value |
AIS-INGV Ionosonde, DPS-4 |
LEVEL-I (Autoscaled) / LEVEL-II (Validated)
|
foes_qual / foes_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
fof1 |
foF1 - Critical frequency of the F1-layer |
MHz |
single value |
AIS-INGV Ionosonde, DPS-4 |
LEVEL-I (Autoscaled) / LEVEL-II (Validated)
|
fof1_qual / fof1_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
fof2 |
foF2 - Critical frequency of the F2-layer |
MHz |
single value |
AIS-INGV Ionosonde, DPS-4 |
LEVEL-I (Autoscaled) / LEVEL-II (Validated)
|
fof2_med_27_days |
27 days median of the foF2 |
MHz |
single value |
AIS-INGV Ionosonde, DPS-4 |
LEVEL-I (Autoscaled)
|
fof2_qual / fof2_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
freq_end |
End frequency of the sounding |
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
freq_gyro |
Gyrofrequency |
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
freq_start |
Starting frequency of the sounding |
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
freq_step |
Frequency step of the sounding |
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
ftes |
Maximum frequency reflected by the sporadic-E layer
|
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
fxi |
fxI : Maximum frequency of F-trace |
MHz |
single value |
AIS-INGV Ionosonde, DPS-4 |
LEVEL-I (Autoscaled) / LEVEL-II (Validated)
|
fxi_qual / fxi_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
h_e |
h'E - Minimum virtual height of E-layer
|
km |
single value |
AIS-INGV Ionosonde, DPS-4 |
LEVEL-I (Autoscaled) / LEVEL-II (Validated)
|
h_e_qual / h_e_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
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)
|
h_es_qual / h_es_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
h_f |
h'F - Minimum virtual height of F-layer
|
km |
single value |
AIS-INGV Ionosonde, DPS-4 |
LEVEL-I (Autoscaled) / LEVEL-II (Validated)
|
h_f_qual / h_f_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
h_f2 |
h'F2 - Minimum virtual height of F2-layer
|
km |
single value |
AIS-INGV Ionosonde, DPS-4 |
LEVEL-I (Autoscaled) / LEVEL-II (Validated)
|
h_f2_qual / h_f2_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
height_end |
Max height of the sounding |
km |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
height_start |
Min height of the sounding |
km |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
height_step |
Height step of the sounding |
km |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
high |
high portion of word for filtering echoe |
- |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
int_n |
integrations of the received signal |
- |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
ionogram |
Raw ionogram |
- |
points matrix (heights / frequencies coordinates with echo amplitude
values)
|
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
jfile |
HF maps |
MHz or adimensional (for ratio maps) |
points matrix (latitudes / longitudes coordinates with values)
|
HF maps |
|
low |
low portion of word for filtering echoe |
- |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
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)
|
m3000f2_qual / m3000f2_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
mag_inclination |
Magnetic inclination |
degrees |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
math_ampli |
Mathematical amplification for correlation process
|
- |
single value |
AIS-INGV Ionosonde |
LEVEL-0 (Raw) |
profile |
Electron density profile |
- |
trace points (height-frequency coordinates)
|
AIS-INGV Ionosonde, DPS-4 |
LEVEL-I (Autoscaled) |
muf3000f1 |
Maximum Usable Frequency, reflecting on the F1 layer, for a 3000 km
range circuit
|
MHz |
single value |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
muf3000f1_qual / muf3000f1_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
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)
|
muf3000f2_qual / muf3000f2_desc |
Qualitative/Descriptive letters for the previous parameter (see TABLE
1)
|
- |
character |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
tec |
Total Electron Content |
TECu |
single value |
DPS-4 |
LEVEL-I (Autoscaled) |
tec_bottom |
Total Electron Content (bottom) |
TECu |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
tec_top |
Total Electron Content (top) |
TECu |
single value |
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
trace_e |
Reconstructed E-layer |
- |
trace points (heights / frequencies coordinates)
|
DPS-4 |
LEVEL-I (Autoscaled) |
trace_es |
Reconstructed Es-layer |
- |
trace points (heights / frequencies coordinates)
|
DPS-4 |
LEVEL-I (Autoscaled) |
trace_f1 |
Reconstructed F1-layer |
- |
trace points (heights / frequencies coordinates)
|
DPS-4 |
LEVEL-I (Autoscaled) |
trace_f2 |
Reconstructed F2-layer |
- |
trace points (heights / frequencies coordinates)
|
DPS-4 |
LEVEL-I (Autoscaled) |
trace |
Reconstructed trace |
- |
trace points (heights / frequencies coordinates)
|
AIS-INGV Ionosonde |
LEVEL-I (Autoscaled) |
type_es |
Description of the Es layer (see TABLE 2) |
- |
alphanumeric |
AIS-INGV Ionosonde |
LEVEL-II (Validated) |
|
|
|
|
|
|
|
|
|
|
|
|
TABLE 1: Qualifying and descriptive letters for the LEVEL-II (manually
validated) data
|
|
Letter |
Type |
Description |
|
A |
qualifying letters |
smaller than (used only for fbEs in case of total blanketing)
|
|
descriptive letters |
measurement influenced by or impossible because of the presence of a
lower layer, for example Ex
|
|
B |
descriptive letters |
measurement influenced by or impossible because of absorption near the
minimum frequency
|
|
C |
descriptive letters |
measurement influenced by or impossible because of a non-ionospheric
reason
|
|
D |
qualifying letters |
greater than |
|
descriptive letters |
measurement influenced by or impossible because of the upper limit of
the frequency range
|
|
E |
qualifying letters |
smaller than |
|
descriptive letters |
measurement influenced by or impossible because of lower limit of the
frequency range
|
|
F |
descriptive letters |
measurement influenced by or impossible because of the presence of
diffuse echoes
|
|
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.
|
|
H |
descriptive letters |
measurement influenced by or impossible because of the presence of
stratifications
|
|
I |
qualifying letters |
interpolated value (the missing value is replaced by the interpolated
value)
|
|
J |
qualifying letters |
ordinary component deducted from the extraordinary component
|
|
L |
descriptive letters |
measurement influenced by or impossible because of the trace does not
have sufficiently sharp cusps between the layers
|
|
M |
qualifying letters |
uncertain interpretation (used when it is not possible to distinguish
between the ordinary and extraordinary rays)
|
|
N |
descriptive letters |
the conditions are such that the measurement cannot be interpreted
|
|
O |
qualifying letters |
extraordinary component deducted from the ordinary component
|
|
descriptive letters |
the measurement refers to the ordinary component
|
|
Q |
descriptive letters |
presence of spread range or oblique spread
|
|
R |
descriptive letters |
measurement influenced by or impossible because of absorption in the
vicinity of critical frequency
|
|
S |
descriptive letters |
measurement influenced by or impossible because of atmospheric
disturbances or interference
|
|
T |
descriptive letters |
value determined by a sequence of observations being the measurement
incompatible with the others or uncertain
|
|
U |
qualifying letters |
uncertain value (numerical value imprecise because there are
conditions that make it difficult to scale the ionogram)
|
|
V |
descriptive letters |
forked trace which may influence the measurement
|
|
W |
descriptive letters |
measurement influenced by or impossible because the echo is beyond the
upper height limit of the ionogram
|
|
X |
descriptive letters |
the measurement refers to the extraordinary component
|
|
Y |
descriptive letters |
lacuna phenomena or the presence of a strongly tilted layer
|
|
Z |
qualifying letters |
characteristic of the ordinary component deduced from the third
magnetoionic component
|
|
descriptive letters |
presence of a third magnetoionic component
|
|
|
|
|
|
|
|
|
|
|
|
|
|
TABLE 2: Descriptions of the Es layer
|
|
|
Letter |
Description |
|
|
C |
type of Es which presents a rather symmetrical cusp at a frequency
equal to or lower than foE
|
|
|
F |
indicates a type of flat Es whose height does not change with
frequency. It should only be used at night
|
|
|
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
|
|
|
H |
describes an Es with a strongly discontinuous trace and with a height
greater than the E layer one
|
|
|