Ionogram Data File Name
File locations
The ASWFC data server provides clean and raw ionogram data files. Under
https://downloads.sws.bom.gov.au/wdc/wdc_ion_archive/,
each directory holds ionogram files for a particular station and type of ionosonde. For example,
tvl5d
holds ionograms for the Townsville 5D ionosonde. Each directory has raw and/or
cln sub-directories, under which are directories for individual years. The
archived ionograms are zipped into day files, and stored in the appropriate year directory.
Raw ionograms contain the full channel vs height information and can range in size from 250 to 750 kBytes per ionogram.
Cleaned ionograms have gone through a process of removing noise, with only the ionogram trace
remaining.
A description of the ASWFC ionograms formats can be found in
Ionogram Data Format,
or in the file Ionogramformat.txt in the doc directory
on the data server.
Software for viewing and scaling ionograms can be found under the
Software Tools section of the Data Download
page. This software is provided as is. The software have been intensively tested on
Windows XP/Vista. In addition, it has undergone routine testing on Windows 98 SE
and Windows 2000. We can give no guarantee that the software will work properly on
systems other than these. ASWFC will not bear responsibility for any damages or loss
of income incurred due to use (or misuse) of this software. Use it at your own risk.
ASWFC ionosonde station names, station name abbreviations and station IDs are listed in the
following table. The station name abbreviation is used as the first part of the corresponding
directory name. The station ID is used as the first part of each data file name.
Station Name |
Station Abbreviation |
Station ID |
Auckland |
auk |
au |
Biak |
bik |
bk |
Brisbane |
bri |
br |
Casey |
cas |
cy |
Canberra |
cbr |
cb |
Camden |
cdn |
cn |
Christchurch |
cch |
cc |
Darwin |
dwn |
dw |
Davis |
dav |
dv |
Hobart |
hbt |
hb |
Kiruna |
kir |
ki |
Kokubunji |
kok |
ko |
Learmonth |
lth |
lm |
Lycksele |
lyc |
ly |
Macquarie Island |
mac |
mq |
Manila |
man |
mn |
Mawson |
maw |
mw |
Mundaring |
mun |
md |
Niue |
nue |
nu |
Norfolk Island |
nlk |
nf |
Okinawa |
oki |
ok |
Port Moresby |
pom |
pm |
Salisbury |
sal |
sl |
Scott Base |
sct |
sc |
Townsville |
tvl |
tv |
Uppsala |
upp |
up |
Vanimo |
vno |
vn |
Wakkanai |
wak |
wa |
Yamagawa |
yam |
ya |
The following table lists ionosonde types and corresponding codes. Each ionosonde code is used as
the second part of an ionogram data file name.
Ionosonde type |
Code |
IPS 4a |
a |
IPS 4b |
b |
IPS 4c |
c |
IPS 4d |
d |
IPS 5a |
e |
IPS 5b |
f |
IPS 5c |
g |
IPS 5d |
h |
IPS 5f |
n |
cadi |
i |
Lowell digisonde |
j (used at Davis, Casey, Learmonth) |
Swedish sonde |
k (used at Kiruna, Lycksele and Uppsala) |
Kel 51 sonde |
l (used at Biak) |
Japanese sonde |
m (used at Kokubunji, Okinawa, Wakkanai, Yamagawa) |
The following table listed the ionogram data directories on the ASWFC data server.
From this table, you can find the corresponding directory for a specified station and
ionosonde type. The rows correspond to ionosonde stations and the columns to ionosonde
types. The table cells indicate the corresponding directory names. Those that are highlighted
and preceded by an asterisk are currently active. Missing or blank cells indicate that no
corresponding data is available.
Station |
4c |
4d |
5a |
5c |
5d |
5f |
CADI |
Lowell |
Swedish |
Kel 51 |
Japanese |
Auckland |
|
auk4d |
|
|
|
|
|
|
|
|
|
Biak |
|
|
|
|
|
|
|
|
|
bik42 |
|
Brisbane |
|
|
|
bri5c |
*bri5d |
|
|
|
|
|
|
Camden |
cdn4c |
cdn4d |
cdn5a |
|
cdn5d |
*cdn5f |
cdncd |
|
|
|
|
Canberra |
|
cbr4d |
cbr5a |
|
*cbr5d |
|
cbrcd |
|
|
|
|
Casey |
|
|
|
|
|
|
*cascd |
casey |
|
|
|
Christchurch |
|
cch4d |
|
|
|
|
|
|
|
|
|
Cocos Islands |
|
|
|
|
*cck5d |
|
|
|
|
|
|
Darwin |
|
dwn4d |
|
dwn5c |
*dwn5d |
|
dwncd |
|
|
|
|
Davis |
|
dav4d |
|
|
dav5d |
|
|
*davis |
|
|
|
Hobart |
|
hbt4d |
hbt5a |
|
*hbt5d |
|
hbtcd |
|
|
|
|
Kiruna |
|
|
|
|
|
|
|
|
kirun |
|
|
Kokubunji |
|
|
|
|
|
|
|
|
|
|
*kokub |
Learmonth |
|
|
|
|
*lea5d |
|
|
learm |
|
|
|
Lycksele |
|
|
|
|
|
|
|
|
lyc |
|
|
Macquarie Is |
|
mac4d |
|
|
|
|
maccd |
|
|
|
|
Manila |
|
man4d |
|
|
|
|
|
|
|
|
|
Mawson |
|
maw4d |
|
|
maw5d |
|
*mawcd |
|
|
|
|
Mundaring |
|
mun4d |
|
|
|
|
muncd |
|
|
|
|
Niue |
|
|
|
|
*nue5d |
|
|
|
|
|
|
Norfolk Island |
|
nlk4d |
nlk5a |
|
*nlk5d |
|
nlkcd |
|
|
|
|
Okinawa |
|
|
|
|
|
|
|
|
|
|
*okina |
Port Moresby |
|
pom4d |
|
|
|
|
|
|
|
|
|
Salisbury |
|
|
sal5a |
sal5c |
|
|
|
|
|
|
|
Scott Base |
|
*sct4d |
|
|
|
|
|
|
|
|
|
Townsville |
|
tvl4d |
tvl5a |
|
*tvl5d |
|
tvlcd |
|
|
|
|
Uppsala |
|
|
|
|
|
|
|
|
uppsa |
|
|
Vanimo |
|
vno4d |
vno5a |
|
vno5d |
|
vnocd |
|
|
|
|
Wakkanai |
|
|
|
|
|
|
|
|
|
|
*wakka |
Yamagawa |
|
|
|
|
|
|
|
|
|
|
*yamag |
Ionogram data file name convention
The files in the directories use name like:
cbd970102.zip (2nd January 1997 Canberra 4d sonde raw data)
cbin970102.zip (2nd January 1997 Canberra cadi sonde cleaned ionograms)
The characters of the file names are as follows.
Charater positions |
Content |
1-2 |
station ID |
3 |
sonde type code |
4 |
if the file is not a raw ionogram data file then this may be an 'n'. An 'n' indicates these are cleaned ionograms so no processing need be done on these files except to expand them. If the file is a raw ionogram data file then from this field will indicate the year, month, day and/or time fields. |
4-5 |
year for raw data ( fields 5-6: year for clean file types) |
6-7 |
month for raw data ( fields 7-8: month for clean file types) |
8-9 |
day for raw data ( fields 9-10: day for clean file types) |
The extension is zip, indicating that the files
are archives that have been zipped. The ASWFC data server provides only zipped files.
Some files are tarred (.tgz) using the command:
tar cvbf 20 <tarfile> <files>
The tar blocking factor is 20. To expand these files, first gunzip them,
then extract the data from the tar archive using:
tar xvbf 20 <filename>
For example to expand the file tvgn9709.tgz do:
gunzip tvgn9709.tgz
tar xvbf 20 tvgn9709.tar
To expand the file dwd980601.zip do:
unzip dwdv980601
In the case of IPS ionosonde (4a to 5d) raw files, expansion of these files will
provide the day files that will require 4d2ips to be run to produce
the cleaned ionograms. These files have names according to the convention below.
Charater positions |
Content |
1-2 |
station ID |
3 |
sonde type code |
4-5 |
year |
6-7 |
month |
8-9 |
day |
10-13 |
dot with extension. The extension may be station ID plus sonde type code or others. |
For example, cbd970129.cbd (day file for 29 January 1997 Canberra 4d sonde).
Note that very occasionally there will be two raw data files for the
same day for a station. This is because the two files contain different data.
They might be named something like
cbd960129a.cbd and cbd960129b.cbd.
In the case of the CADI sonde, the raw files may have been tarred into
day files, or the raw files may have simply been zipped/tarred into the
final file. Expansion of these files will result in raw data files
that require cadi2ips to be run to produce clean ionogram
files. These raw files have the following name format.
Charater positions |
Content |
1-2 |
station ID |
3 |
sonde type code: i |
4-5 |
year |
6-7 |
month |
8-9 |
day |
5-8 |
HHMM where HH=hour and MM=minute |
For example, cbi9803120100.cbr
(hour file for 0100 UT on 12 March 1998 Canberra CADI ionosonde.
In the case of the Lowell digisonde, expansion of the files will result in
files with the following naming format.
Charater positions |
Content |
1-2 |
station ID |
3 |
sonde type code j |
4-5 |
year |
6-7 |
month |
8-9 |
day |
10-17 |
HMMS.XXX |
where:
- H = hour (A-X)
- MM = minutes
- S = seconds (5 s intervals A-L)
- XXX = file type
Julian Day Calendar (for non-leap years):
Day |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
1 | 001 | 032 | 060 | 091 | 121 | 152 | 182 | 213 | 244 | 274 | 305 | 335 |
2 | 002 | 033 | 061 | 092 | 122 | 153 | 183 | 214 | 245 | 275 | 306 | 336 |
3 | 003 | 034 | 062 | 093 | 123 | 154 | 184 | 215 | 246 | 276 | 307 | 337 |
4 | 004 | 035 | 063 | 094 | 124 | 155 | 185 | 216 | 247 | 277 | 308 | 338 |
5 | 005 | 036 | 064 | 095 | 125 | 156 | 186 | 217 | 248 | 278 | 309 | 339 |
6 | 006 | 037 | 065 | 096 | 126 | 157 | 187 | 218 | 249 | 279 | 310 | 340 |
7 | 007 | 038 | 066 | 097 | 127 | 158 | 188 | 219 | 250 | 280 | 311 | 341 |
8 | 008 | 039 | 067 | 098 | 128 | 159 | 189 | 220 | 251 | 281 | 312 | 342 |
9 | 009 | 040 | 068 | 099 | 129 | 160 | 190 | 221 | 252 | 282 | 313 | 343 |
10 | 010 | 041 | 069 | 100 | 130 | 161 | 191 | 222 | 253 | 283 | 314 | 344 |
11 | 011 | 042 | 070 | 101 | 131 | 162 | 192 | 223 | 254 | 284 | 315 | 345 |
12 | 012 | 043 | 071 | 102 | 132 | 163 | 193 | 224 | 255 | 285 | 316 | 346 |
13 | 013 | 044 | 072 | 103 | 133 | 164 | 194 | 225 | 256 | 286 | 317 | 347 |
14 | 014 | 045 | 073 | 104 | 134 | 165 | 195 | 226 | 257 | 287 | 318 | 348 |
15 | 015 | 046 | 074 | 105 | 135 | 166 | 196 | 227 | 258 | 288 | 319 | 349 |
16 | 016 | 047 | 075 | 106 | 136 | 167 | 197 | 228 | 259 | 289 | 320 | 350 |
17 | 017 | 048 | 076 | 107 | 137 | 168 | 198 | 229 | 260 | 290 | 321 | 351 |
18 | 018 | 049 | 077 | 108 | 138 | 169 | 199 | 230 | 261 | 291 | 322 | 352 |
19 | 019 | 050 | 078 | 109 | 139 | 170 | 200 | 231 | 262 | 292 | 323 | 353 |
20 | 020 | 051 | 079 | 110 | 140 | 171 | 201 | 232 | 263 | 293 | 324 | 354 |
21 | 021 | 052 | 080 | 111 | 141 | 172 | 202 | 233 | 264 | 294 | 325 | 355 |
22 | 022 | 053 | 081 | 112 | 142 | 173 | 203 | 234 | 265 | 295 | 326 | 356 |
23 | 023 | 054 | 082 | 113 | 143 | 174 | 204 | 235 | 266 | 296 | 327 | 357 |
24 | 024 | 055 | 083 | 114 | 144 | 175 | 205 | 236 | 267 | 297 | 328 | 358 |
25 | 025 | 056 | 084 | 115 | 145 | 176 | 206 | 237 | 268 | 298 | 329 | 359 |
26 | 026 | 057 | 085 | 116 | 146 | 177 | 207 | 238 | 269 | 299 | 330 | 360 |
27 | 027 | 058 | 086 | 117 | 147 | 178 | 208 | 239 | 270 | 300 | 331 | 361 |
28 | 028 | 059 | 087 | 118 | 148 | 179 | 209 | 240 | 271 | 301 | 332 | 362 |
29 | 029 | | 088 | 119 | 149 | 180 | 210 | 241 | 272 | 302 | 333 | 363 |
30 | 030 | | 089 | 120 | 150 | 181 | 211 | 242 | 273 | 303 | 334 | 364 |
31 | 031 | | 090 | | 151 | | 212 | 243 | | 304 | | 365 |
Julian Day Calendar (for leap years):
Day |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
1 | 001 | 032 | 061 | 092 | 122 | 153 | 183 | 214 | 245 | 275 | 306 | 336 |
2 | 002 | 033 | 062 | 093 | 123 | 154 | 184 | 215 | 246 | 276 | 307 | 337 |
3 | 003 | 034 | 063 | 094 | 124 | 155 | 185 | 216 | 247 | 277 | 308 | 338 |
4 | 004 | 035 | 064 | 095 | 125 | 156 | 186 | 217 | 248 | 278 | 309 | 339 |
5 | 005 | 036 | 065 | 096 | 126 | 157 | 187 | 218 | 249 | 279 | 310 | 340 |
6 | 006 | 037 | 066 | 097 | 127 | 158 | 188 | 219 | 250 | 280 | 311 | 341 |
7 | 007 | 038 | 067 | 098 | 128 | 159 | 189 | 220 | 251 | 281 | 312 | 342 |
8 | 008 | 039 | 068 | 099 | 129 | 160 | 190 | 221 | 252 | 282 | 313 | 343 |
9 | 009 | 040 | 069 | 100 | 130 | 161 | 191 | 222 | 253 | 283 | 314 | 344 |
10 | 010 | 041 | 070 | 101 | 131 | 162 | 192 | 223 | 254 | 284 | 315 | 345 |
11 | 011 | 042 | 071 | 102 | 132 | 163 | 193 | 224 | 255 | 285 | 316 | 346 |
12 | 012 | 043 | 072 | 103 | 133 | 164 | 194 | 225 | 256 | 286 | 317 | 347 |
13 | 013 | 044 | 073 | 104 | 134 | 165 | 195 | 226 | 257 | 287 | 318 | 348 |
14 | 014 | 045 | 074 | 105 | 135 | 166 | 196 | 227 | 258 | 288 | 319 | 349 |
15 | 015 | 046 | 075 | 106 | 136 | 167 | 197 | 228 | 259 | 289 | 320 | 350 |
16 | 016 | 047 | 076 | 107 | 137 | 168 | 198 | 229 | 260 | 290 | 321 | 351 |
17 | 017 | 048 | 077 | 108 | 138 | 169 | 199 | 230 | 261 | 291 | 322 | 352 |
18 | 018 | 049 | 078 | 109 | 139 | 170 | 200 | 231 | 262 | 292 | 323 | 353 |
19 | 019 | 050 | 079 | 110 | 140 | 171 | 201 | 232 | 263 | 293 | 324 | 354 |
20 | 020 | 051 | 080 | 111 | 141 | 172 | 202 | 233 | 264 | 294 | 325 | 355 |
21 | 021 | 052 | 081 | 112 | 142 | 173 | 203 | 234 | 265 | 295 | 326 | 356 |
22 | 022 | 053 | 082 | 113 | 143 | 174 | 204 | 235 | 266 | 296 | 327 | 357 |
23 | 023 | 054 | 083 | 114 | 144 | 175 | 205 | 236 | 267 | 297 | 328 | 358 |
24 | 024 | 055 | 084 | 115 | 145 | 176 | 206 | 237 | 268 | 298 | 329 | 359 |
25 | 025 | 056 | 085 | 116 | 146 | 177 | 207 | 238 | 269 | 299 | 330 | 360 |
26 | 026 | 057 | 086 | 117 | 147 | 178 | 208 | 239 | 270 | 300 | 331 | 361 |
27 | 027 | 058 | 087 | 118 | 148 | 179 | 209 | 240 | 271 | 301 | 332 | 362 |
28 | 028 | 059 | 088 | 119 | 149 | 180 | 210 | 241 | 272 | 302 | 333 | 363 |
29 | 029 | 060 | 089 | 120 | 150 | 181 | 211 | 242 | 273 | 303 | 334 | 364 |
30 | 030 | | 090 | 121 | 151 | 182 | 212 | 243 | 274 | 304 | 335 | 365 |
31 | 031 | | 091 | | 152 | | 213 | 244 | | 305 | | 366 |