look at dobson97.html, dobson98.html and dobson99.html for 1997 to 1999 data
click
here for the meteo_lcd data pinned |
||
The complete files with all measurements as they are stored in the Microtops
instrument
can be found in the data area under the name of
mtopxxyy.dat
NEW: now with ground (tropospheric) ozone concentrations measured at the same time! |
The total thickness of the (stratospheric) ozone layer is measured at unspecified,
irregular intervals using the handheld
Microtops II sensor manufactured by Solar Light Company
of Philadelphia. This instrument measures the thickness of the ozone layer by computing
the ratios of UVB irradiances measured at three different wavelengths, taking into account
the water vapour content of the atmosphere, which is also measured by the instrument.
The measurement results are given in DU (Dobson Unit). 100 DU correspond to a total
thickness of 1 mm, if the ozone layer were at a standard atmospheric presssure of 1013.25
[HPa]. Common values are in the 250..350 DU range.
Look for other total ozone measurements at the site of the Adeos Satellite, at
the Climate Prediction
Center (NOAA) total ozone maps of the whole earth and the polar caps, or at the Royal Meteorological Institute
(RMI) of Belgium which all display near-live or very recent data.
The Adeos spacecraft has been definitively lost since June 30 1997. ADEOS Ozone measurements are not available anymore! Look at the NASA EP site for O3 data!
latitude = 49°52' North | longitude = 6°10' East | altitude = 218 m a.s.l. |
also... | a first intercomparison between the ozone measurements of the Microtops II and those made by the Brewer instrument at the RMI at Uccle! |
Location | Date | UTC Time | Thickness [DU] |
Sky Condition | Ground ozone [ug/m3] |
Diekirch | |||||
Diekirch | 22 Dec 00 | 12:27 | 370.2 | light haze | 16.7 |
Diekirch | 21 Dec 00 | 12:30 | 321.4 | light haze | 26.4 |
Diekirch | 12 Dec 00 | 12:00 | 301.1 | hazy | 36.7 |
Diekirch | 11 Dec 00 | 11:42 | 317.3 | hazy | 50.9 |
Diekirch | 05 Dec 00 | 12:00 | 269.0 | hazy | |
Diekirch | 04 Dec 00 | 11:50 | 281.9 | hazy | |
Diekirch | 01 Dec 00 | 11:20 | 263.5 | hazy | |
Diekirch | 29 Nov 00 | 11:40 | 220.4 | light haze | 3.8 |
Diekirch | 26 Nov 00 | 12:00 | 333.8 | many clouds | |
Diekirch | 24 Nov 00 | 11:10 | 318.2 | many clouds | 49.8 |
Diekirch | 09 Nov 00 | 13:52 | 299.4 | many clouds | |
Diekirch | 26 Oct 00 | 11:43 | 304.5 | many clouds | |
Diekirch | 22 Oct 00 | 13:25 | 283.9 | blue sky | 50.1 |
Diekirch | 21 Oct 00 | 11:45 | 291.6 | hazy | 57.3 |
Diekirch | 17 Oct 00 | 12:12 | 310.5 | many clouds | 66.7 |
Diekirch | 14 Oct 00 | 11:55 | 284.2 | hazy | 59.2 |
Diekirch | 10 Oct 00 | 10:20 | 311.8 | heavy clouds | 61.8 |
Diekirch | 07 Oct 00 | 11:45 | 320.4 | blue sky, some clouds | 44.4 |
Diekirch | 06 Oct 00 | 10:37 | 322.5 | many clouds | 54.9 |
Diekirch | 04 Oct 00 | 12:16 | 266.4 | some clouds | 50.8 |
Diekirch | 01 Oct 00 | 14:00 | 303.0 | many clouds | 69.8 |
Diekirch | 29 Sep 00 | 10:40 | 281.3 | blue sky | 79 |
Diekirch | 26 Sep 00 | 12:08 | 273.9 | hazy + clouds | 80.5 |
Diekirch | 24 Sep 00 | 12:35 | 274.0 | hazy | |
Diekirch | 23 Sep 00 | 12:08 | 283.8 | many clouds | |
Diekirch | 19 Sep 00 | 11:18 | 308.0 | blue sky, few clouds | 52.2 |
Diekirch | 12 Sep 00 | 11:25 | 287.7 | hazy | 72.7 |
Diekirch | 11 Sep 00 | 11:55 | 291.6 | blue sky | 76.4 |
Diekirch | 10 Sep 00 | 12:15 | 308.2 | blue sky | 89.1 |
Diekirch | 02 Jul 00 | 12:33 | 335.0 | many clouds | |
Diekirch | 01 Jul 00 | 14:23 | 336.2 | blue sky with clouds | |
Diekirch | 27 Jun 00 | 11:37 | 332.5 | blue sky, light haze | 71.8 |
Diekirch | 21 Jun 00 | 10:37 | 353,7 | hazy sky | 119.9 |
Diekirch | 20 Jun 00 | 11:10 | 348.5 | blue sky | 134.5 |
Diekirch | 16 Jun 00 | 12:18 | 349.3 | many clouds | 112.3 |
Diekirch | 16 May 00 | 12:26 | 340.9 | blue sky with clouds | 117.1 |
Diekirch | 14 May 00 | 11:27 | 370.4 | blue sky with clouds | 121.7 |
Diekirch | 09 May 00 | 11:10 | 361.0 | blue sky | 89.2 |
Diekirch | 08 May 00 | 11:14 | 353.6 | many clouds | 105.1 |
Diekirch | 05 May 00 | 11:36 | 368.4 | blue sky with clouds | 123.8 |
Diekirch | 02 May 00 | 10:52 | 350.4 | many clouds | 78.8 |
Diekirch | 01 May 00 | 13:25 | 352.8 | many clouds | 115.1 |
Diekirch | 27 Apr 00 | 12:50 | 354.4 | thick haze | 111.1 |
Diekirch | 26 Apr 00 | 10:40 | 357.9 | blue sky | 86.3 |
Diekirch | 25 Apr 00 | 11:02 | 364.2 | light haze | 95.2 |
Diekirch | 24 Apr 00 | 12:00 | 382.5 | many clouds | 85.6 |
Diekirch | 06 Apr 00 | 12:13 | 403.3 | blue sky | NA |
Diekirch | 04 Apr 00 | 11:40 | 386.5 | many clouds | NA |
Diekirch | 02 Apr 00 | 11:09 | 399.3 | a few clouds | NA |
Diekirch | 27 Mar 00 | 12:42 | 451.8 | many clouds | NA |
Diekirch | 21 Mar 00 | 12:00 | 360.3 | very light haze | NA |
Diekirch | 20 Mar 00 | 12:09 | 374.2 | hazy | NA |
Diekirch | 15 Mar 00 | 11:35 | 335.7 | many clouds | NA |
Diekirch | 13 Mar 00 | 11:47 | 332.4 | hazy sky | NA |
Diekirch | 06 Mar 00 | 12:00 | 326.7 | blue sky | NA |
Diekirch | 05 Mar 00 | 12:00 | 287.3 | many clouds | NA |
Diekirch | 27 Feb00 | 12:22 | 301.7 | blue sky | NA |
Diekirch | 26 Feb 00 | 12:05 | 339.8 | blue sky | NA |
Diekirch | 20 Feb 00 | 10:36 | 385.4 | many louds | NA |
Diekirch | 12 Feb 00 | 13:37 | 336.5 | many clouds | 68.7 |
Diekirch | 11 Feb 00 | 11:16 | 351.0 | hazy, some clouds | 36.0 |
Diekirch | 06 Feb 00 | 11:59 | 279.6 | hazy | NA |
Diekirch | 05 Feb 00 | 12:56 | 259.9 | blue sky | NA |
Diekirch | 27 Jan 00 | 12:22 | 303.5 | light haze | 0.0 |
Diekirch | 26 Jan 00 | 11:40 | 309.8 | blue sky | 10.0 |
Diekirch | 25 Jan 00 | 11:53 | 297.0 | blue sky | 16.0 |
Diekirch | 24 Jan 00 | 11.50 | 332.4 | blue sky | 39.0 |