Notes on the dynasonde soundings on this disk (CD-TR035)

Notes specific to this disk:
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The data gaps around 17 June and 23 June-1 July were caused
by Ailtech synthesizer problems triggered by a power break. 

A major TIDAL-AGWS EISCAT campaign is from 1-9 July 1999,
as well as a PMSE rocket campaign. Hence the 6-min soundings 
in that interval.

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General notes:
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Standard soundings:
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The data are from the Tromso dynasonde.

The soundings are stored in directories according to the month of recording.
In some cases the soundings for a month are spread over more than one directory
e.g. DEC1994a and DEC1994B. 

In the listings of soundings (files with extension .DIR) the dates and
times were read from the soundings and should be as accurate as the 
dynasonde PC clock at the time of data taking. A few files which show a
date as 19700101 have a corrupted time/date.

The soundings are listed according to type in files B-MODES.DIR, I-MODES.DIR,
K-MODES.DIR, P-MODES.DIR, as well as a total listing in LIST-ALL.DIR

Note that P-mode soundings that raw data soundings of type I- or
B-mode, although also "P-mode" are usually named *.IPG or *.BPG
and are numbered and catalogued as I or B-mode. 

The CALIBS.DIR shows where calibration soundings (with file extension 
NOT *.?_? , usually of type *.?r?) are stored. 

The GAPS-x.TXT files show missing soundings (or repeated sounding numbers)
for the four various modes of sounding (b,i,k,p).

IDI soundings:
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In addition to standard raw soundings, results from the IDI 
("Imaging Doppler Interferometry") P-mode soundings are included. 
Since 2 May, this mode has been running between interspersed
between the B-mode soundings. The original P-mode
soundings on which they are based are not recorded, nor are 
the P-mode sounding numbers incremented.
The results, together with some analysis/potting IDL scripts
are in the directory IDI_RSLT.

The subdirectories are:

PS-FILES contains compressed colour postscript files of daily summary 
binary velocity (*.IVB) file. (Produced using IDL script MESO-VP6.PRO)

ALL-BIN contains compressed binary files for each day: one binary
file from each sounding. (Produced by the main IDI prodcessing
program: IDI_61T.PRO)

SUMM-BIN contains a "large" binary file of the days results (produced 
using IDL script IDI_A2BV.PRO on ascii files which are not recorded here)
In brief: the yyyymmdd.ivb file is the day's results in
binary file format. The yymmddbn.zip files contain the
individual day's "parameter files" in binary format.


There are some IDL scripts which can handle these data.
The IDL scripts are contained in the compressed file IDI_IDL.ZIP
The FAIS (Dynasonde) files used to produce these IDI data are 
in IDI_FAIS.ZIP

A by-product of the IDI soundings are possible meteor echoes. 
They are recoded in the directory METEORS together with some 
IDL plotting scripts.

The software run in Tromso is an implementation of
that written by Owen Jones of BAS for use at Halley Bay.
Information on the IDI technique is found in notes in the
file idi_note.wpd.