|

Time coverage of the data
The following table provides an overview of the data sets of SACS, with the
time period covered by the data sets, as well as the data sets planned for
use in the (near) future, listed per satellite instrument. The date between brackets in the off-line data archive column is the date
of the first available data.
- Remarks: an entry "--" means that that data set is not yet available
Missing data in the SO2 off-line data archive
The satellites carrying the instruments perform 14 or 15 orbits per day. It
happens that for one or
more of these orbits data is missing, either because
the instrument did not measure anything, or
because the measurement is of too low quality for a reliable retrieval. This missing data leads to
gaps in the plots of the daily data. For some geographic regions the web pages
accessing the
data archive will then show empty pictures.
There are also days with no data at all, again because of lack of
measurements of lack of
the quality of these measurements. For these days there will be no data in the archive at all,
and the web pages accessing the data archive will show a message.
The following tables lists whole days without any SO2 and AAI data in the
off-line data archive,
i.e. for which no maps are shown. The first day for
which off-line archive data is available is given above.
Note that this table is maintained by hand and may thus be incomplete.
Year |
SCIAMACHY |
OMI |
GOME-2 |
IASI |
Month |
Days |
Month |
Days |
Month |
Days |
Month |
Days |
2010 |
March
Feb.
Jan.
|
04
01-02
29-31
|
May
Jan.
|
02
19
|
[none]
|
[none]
|
--
|
--
|
2009 |
Aug.
June
April
March
Jan.
|
10
04,16
07,08
31
01-03
|
Aug.
|
05
|
Dec.
Nov.
Sep.
April.
|
13-15
29
08-10
06-08
17-19
|
--
|
--
|
2008 |
Dec.
|
19-31
|
[n/a]
|
[n/a]
|
Nov.
Sep.
Aug.
Feb.
Jan.
|
29
08-11
15
17
28
|
--
|
--
|
2007 |
Dec.
Sep.
|
02-04
25-27
|
[n/a]
|
[n/a]
|
Sep.
April
March
Jan.
|
19
09, 21-25
03-05
01-03
|
--
|
--
|
2006 |
Dec.
Nov.
Sep.
May
April
Jan.
|
13-15
29
08-10
26
06-08, 17-19
14
|
[n/a]
|
[n/a]
|
[n/a]
|
[n/a]
|
[n/a]
|
[n/a]
|
2005 |
May
Jan.
|
12
01-02
|
[n/a]
|
[n/a]
|
[n/a]
|
[n/a]
|
[n/a]
|
[n/a]
|
2004 |
Dec.
Nov.
Oct.
Sep.
June
May
Jan.
|
20-31
17
01
23
18-28
09
01-03
|
[n/a]
|
[n/a]
|
[n/a]
|
[n/a]
|
[n/a]
|
[n/a]
|
|
|