Total Ozone Thickness 2000

look at dobson97.html, dobson98.html and dobson99.html for 1997 to 1999 data

1999

click here for the meteo_lcd data pinned 
on the graph of RMI 

2000

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!

jump straight-on to the data


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!


The coordinates of DIEKIRCH are:
latitude = 4952' North longitude = 610' 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