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FastChar
Digital Ionogram Data Base (DIDBase)
Ionogram-Derived Characeristics
1. Select Time Interval:
All times in UTC
3. Select Data to Download:
foF2 -- F2 layer critical frequency
foF1 -- F1 layer critical frequency
foE -- E layer critical frequency
foEs -- Es layer critical frequency
fbEs -- Blanketing frequency of Es-layer
foEa -- Critical frequency of auroral E-layer
foP -- Critical frequency of F region patch trace
fxI -- Maximum frequency of F trace
MUFD -- Maximum usable frequency, 3000 km
MD -- MUF(3000)/foF2
hF2 -- Minimum virtual height of F2 trace
hF -- Minimum virtual height of F trace
hE -- Minimum virtual height of E trace
hEs -- Minimum virtual height of Es trace
hEa -- Minimum virtual height of auroral E trace
hP -- Minimum virtual height of F patch trace
TypeEs -- Type of Es layer(s)
hmF2 -- Peak height F2-layer
hmF1 -- Peak height F1-layer
hmE -- Peak height of E-layer
zhalfNm -- True height at 1/2 NmF2
yF2 -- Half thickness of F2-layer
yF1 -- Half thickness of F1-layer
yE -- Half thickness of E-layer
scaleF2 -- Scale height at the F2-peak
B0 -- IRI thickness parameter
B1 -- IRI profile shape parameter
D1 -- IRI profile shape parameter
TEC -- Ionogram-derived total electron content
FF -- Frequence spread between fxF2 and fxI
FE -- Frequence spread beyond foE
QF -- Range spread of F-layer
QE -- Range spread of E-layer
fmin -- Minimum frequency of echoes
fminF -- Minimum frequency of F-layer echoes
fminE -- Minimum frequency of E-layer echoes
fminEs -- Minimum frequency of Es-layer
foF2p -- foF2 prediction by IRI no-storm option
Control-click to select multiple characteristics
4. Search:
Start:
Stop:
Visit DIDBase Portal for
data availability
(live scan of DIDBase, wait for reply)
2. Pick one GIRO Location:
(AH223) AHMEDABAD
(AL945) ALPENA
(AN438) ANYANG
(AS00Q) ASCENSION ISLAND
(AT138) ATHENS
(AU930) AUSTIN
(BP440) BEIJING
(BLJ03) BELEM
(BJJ32) BERMUDA
(BVJ03) BOA VISTA
(BC840) BOULDER
(BR52P) BRISBANE
(BV53Q) BUNDOORA
(CXM9B) CACHIMBO
(CAJ2M) CACHOEIRA PAULISTA
(CN53L) CAMDEN
(CGK21) CAMPO GRANDE
(CB53N) CANBERRA
(CH833) CHERRY
(RL052) CHILTON
(CS31K) COCOS_ISLAND
(CO764) COLLEGE AK
(CS839) COLORADO_SPRINGS
(DW41K) DARWIN
(DB049) DOURBES
(DS932) DYESS AFB
(EA653) EARECKSON
(EG931) EGLIN AFB
(EI764) EIELSON
(EA036) EL ARENOSILLO
(FF051) FAIRFORD
(FZA0M) FORTALEZA
(GA313) GADANKI
(GA762) GAKONA
(GM037) GIBILMANNA
(GSJ53) GOOSE BAY
(GR13L) GRAHAMSTOWN
(GU513) GUAM
(HA419) HAINAN
(HAJ43) HANSCOM AFB
(HE13N) HERMANUS
(HO54K) HOBART
(IC437) I-CHEON
(AC843) IDAHO NATIONAL LAB
(IF843) IDAHO NATIONAL LAB
(IL008) ILORIN
(IR352) IRKUTSK
(JB57N) JANG BOGO
(JJ433) JEJU IS
(JI91J) JICAMARCA
(JR055) JULIUSRUH
(KL154) KALININGRAD
(KI939) KENT IS
(KB547) KHABAROVSK
(KS759) KING SALMON
(KR835) KIRTLAND AFB
(KI167) KIRUNA
(TO535) KOKUBUNJI
(KJ609) KWAJALEIN
(LA42Q) LAVERTON
(LM42B) LEARMONTH
(LV12P) LOUISVALE
(LL721) LUALUALEI
(MU12K) MADIMBO
(MA560) MAGADAN
(ME929) MELROSE
(MHJ45) MILLSTONE HILL
(MH453) MOHE
(MA155) MOSCOW-PARUS-A
(MO155) MOSCOW
(MO156) MOSCOW-ELECTROUGLI
(MU230) MULTAN
(MU834) MUNYO
(NQJ61) NARSSARSSUAQ
(NI135) NICOSIA
(ND61R) NIUE
(NDA81) NORD GREENLAND
(NI63_) NORFOLK
(NO369) NORILSK
(NV355) NOVOSIBIRSK
(OK426) OKINAWA
(OL246) OLSZTYN
(SN437) OSAN AB
(PE43K) PERTH
(PK553) PETROPAVLOVSK
(PF765) POKER FLAT
(PSJ5J) PORT STANLEY
(PQ052) PRUHONICE
(PA836) PT ARGUELLO
(THJ77) QAANAAQ
(PRJ18) RAMEY
(RM041) ROME-AIS
(RO041) ROME
(EB040) ROQUETES
(RV149) ROSTOV
(SH266) SALEKHARD
(VT139) SAN VITO
(SMK29) SANTA MARIA
(SA418) SANYA
(SAA0K) SAOLUIS
(SMJ67) SONDRESTROM
(SO148) SOPRON
(SH42_) SOUTH HEDLAND
(SQ832) SQUIRT
(THJ76) THULE
(TV51R) TOWNSVILLE
(TM308) TRIVANDRUM
(TR169) TROMSO
(TR170) TROMSO-EISCAT
(TNJ2O) TUCUMAN
(TUJ2O) TUCUMAN
(TZ362) TUNGUSKA
(WA619) WAKE IS
(WP937) WALLOPS IS
(WI937) WALLOPS IS VIPER
(MZ152) WARSAW
(WU430) WUHAN
(XI434) XINXIANG
(YA462) YAKUTSK
(ZH466) ZHIGANSK
(ZS36R) ZHONG SHAN
Compute MUFD for
km
PLEASE READ RULES OF THE ROAD
: Rules of the road for using this data service
DIDBase Web Portal
: Web Portal for browsing images of ionograms and ionogram-derived data in DIDBase
DIDBase Availability Chart
: Table of stations with start/stop coverage dates (live)
SAO Explorer
: Java application for Digisonde ionogram display and editing with ARTIST-5. Download SAO Explorer
here.
Digisonde Station Map
at UMLCAR
Lowell Digisonde International (LDI)
Digisonde homepage