Total Ozone Thickness 2001

look at dobson97.html, dobson98.html, dobson99.html , dobson00.html for 1997 to 2000 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

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 old link to the ozone data has changed)

The coordinates of DIEKIRCH are:
latitude = 49°52' North longitude = 6°10' East altitude = 218 m a.s.l.
also... an  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 23Dec01 12:06 307.9 blue sky 47.3
Diekirch 22Dec01 13:10 278.0 heavy clouds 45.9
Diekirch 20Dec01 12:53 301.5 heavy clouds 45.3
Diekirch 16Dec01 12:05 300.3 heavy clouds 43.7
Diekirch 15Dec01 12:15 278.0 blue sky 37.4
Diekirch 14Dec01 12:06 315.3 blue sky 32.1
Diekirch 13Dec01 12:22 286.9 heavy clouds 37.1
Diekirch 11Dec01 11:54 271.4 hazy 7.2
Diekirch 10Dec01 12:01 258.5 blue sky 36.8
Diekirch 09Dec01 11:44 275.6 blue sky 37.3
Diekirch 08Dec01 12:28 232.5 blue sky 35.6
Diekirch 07Dec01 11:57 247.5 blue sky 7.6
Diekirch 01Dec01 13:17 306.9 many clouds 46.4
Diekirch 28Nov01 12:03 332.8 many clouds 44.1
Diekirch 27Nov01 12:00 319.3 many clouds 50.7
Diekirch 23Nov01 11:43 264.3 many clouds  
Diekirch 18Nov01 12:20 276.2 very hazy 37.6
Diekirch 17Nov01 13:02 264.1 blue sky 39.0
Diekirch 15Nov01 12:20 269.3 blue sky 42.9
Diekirch 14Nov01 11:54 313.5 heavy clouds 57.1
Diekirch 13Nov01 12:01 286.2 many clouds 49.5
Diekirch 10Nov01 12:00 263.5 blue sky 59.9
Diekirch 05Nov01 11:45 306.6 some clouds 61.7
Diekirch 04Nov01 12:14 272.4 light haze  
Diekirch 01Nov01 12:22 263.2 some clouds 62.7
Diekirch 30Oct01 12:02 260.4 light haze 39.7
Diekirch 25Oct01 12:12 285.1 many clouds 67.2
Diekirch 21Oct01 12:28 306.4 heavy clouds 60.1
Diekirch 19Oct01 10:45 270.8 light haze 40.3
Diekirch 18Oct01 12:38 276.0 light haze 48.2
Diekirch 16Oct01 11:44 272.4 blue sky 30.9
Diekirch 15Oct01 11:20 270.0 very hazy 29.1
Diekirch 13Oct01 12:15 262.8 very hazy 28.1
Diekirch 12Oct01 11:24 286.6 light haze 18.3
Diekirch 11Oct01 11:44 266.7 many clouds 59.2
Diekirch 10Oct01 11:28 286.8 many clouds 36.4
Diekirch 07Oct01 12:12 311.8 very hazy 62.2
Diekirch 06Oct01 10:21 297.6 some clouds 58.3
Diekirch 02Oct01 11:17 290.0 heavy clouds 60.7
Diekirch 30Sep01 11:24 308.4 some clouds 76.5
Diekirch 28Sep01 10:46 314.5 light haze 15.7
Diekirch 26Sep01 11:47 318.3 heavy clouds 20.0
Diekirch 22Sep01 11:06 348.5 many clouds 68.1
Diekirch 16Sep01 10:35 358.6 some clouds 58.2
Diekirch 10Aug01 11:55 386.0 heavy clouds 78
Diekirch 16Jul01 11:00 382.5 many clouds 84.4
Diekirch 11Jul01 12:00 372.9 many clouds 70.5
Diekirch 10Jul01 11:20 374.2 many clouds 97.9
Diekirch 06Jul01 11:02 374.8 light haze 143.0
Diekirch 05Jul01 11:55 362.6 very light haze 151.0
Diekirch 04Jul01 12:10 357.8 blue sky 114.0
Diekirch 03Jul01 11:49 348.7 blue sky 108.3
Diekirch 02Jul01 11:45 339.6 heavy clouds 69.8
Diekirch 01Jul01 10:01 347.9 many clouds 65.5
Diekirch 30Jun01 10:23 357.5 heavy clouds 118.3
Diekirch 29Jun01 10:24 352.6 heavy clouds 57.0
Diekirch 26Jun01 12:05 341.0 light haze 174.0
Diekirch 25Jun01 12:42 356.9 some clouds 136.4
Diekirch 24Jun01 11:11 360.0 blue sky 130.6
Diekirch 23Jun01 10:23 358.2 some clouds  
Diekirch 21Jun01 11:18 356.1 many clouds  
Diekirch 20Jun01 10:17 352.7 some clouds  
Diekirch 19Jun01 11:32 354.7 many clouds 88.1
Diekirch 17Jun01 10:28 385.6 many clouds  
Diekirch 16Jun01 12:05 397.3 many clouds  
Diekirch 15Jun01 10:13 368.8 very hazy  
Diekirch 13Jun01 10:51 382.5 very hazy  
Diekirch 12Jun01 10:37 372.4 many clouds 103.4
Diekirch 10Jun01 12:12 393.8 many clouds 97.2
Diekirch 01Jun01 11:30 388.9 many clouds 97.5
Diekirch 31May01 11:57 381.9 many clouds 91.6
Diekirch 30May01 10.52 335.7 blue sky 118.4
Diekirch 29May01 10:51 318.7 many clouds 56.5
Diekirch 28May01 11:00 329.4 heavy clouds 73.9
Diekirch 27May01 11:29 352.0 heavy clouds 130.9
Diekirch 26May01 11:27 359.4 blue sky 143.4
Diekirch 25May01 11:04 379.0 blue sky 139.9
Diekirch 24May01 11:05 379.9 some clouds 135.9
Diekirch 23May01 14:34 355.1 very light haze 130.7
Diekirch 22May01 11:18 360.9 light haze 99.2
Diekirch 21May01 11:05 378.2 blue sky 101.0
Diekirch 20May01 11:02 393.5 blue sky 113.2
Diekirch 19May01 11:15 386.3 many clouds 86.9
Diekirch 16May01 14:06 382.7 many clouds 96.9
Diekirch 15May01 12:01 412.0 heavy clouds 91.1
Diekirch 13May01 11:54 375.7 light haze 114.2
Diekirch 12May01 12:05 367.9 blue sky 84.6
Diekirch 11May01 12:00 371.3 blue sky 99.0
Diekirch 10May01 11:30 364.4 some clouds 112.8
Diekirch 09May01 11:55 381.1 many clouds 95.7
Diekirch 02May01 10:45 370.0 light haze 80.8
Diekirch 30Apr01 11:03 372.6 heavy clouds 85.5
Diekirch 29Apr01 11:54 363.5 heavy clouds 86.9
Diekirch 22Apr01 10:26 460.9 heavy clouds 104.8
Diekirch 07Apr01 11:28 391.5 many clouds 95.4
Diekirch 02Apr01 11:17 329.4 blue sky 93.1
Diekirch 01Apr01 12:15 331.8 many clouds 89.3
Diekirch 31Mar01 11:02 365.1 many clouds 76.5
Diekirch 30Mar01 10:17 443.0 heavy clouds 56.0
Diekirch 29Mar01 14:34 416.8 many clouds 84.0
Diekirch 19Mar01 11:45 387.4 heavy clouds 76.0
Diekirch 17Mar01 13:15 379.9 some clouds, hazy 89.3
Diekirch 13Mar01 13:04 375.7 heavy clouds 75.6
Diekirch 06Mar01 11.55 392.2 blue sky 34.4
Diekirch 03Mar01 12:10 382.0 light haze 59.8
Diekirch 22Feb01 12:21 361.6 many clouds 57.9
Diekirch 19Feb01 11:42 346.2 some clouds 57.4
Diekirch 18Feb01 12:00 328.8 blue sky  
Diekirch 16Feb01 11:44 292.3 blue sky  
Diekirch 15Feb01 13:15 282.4 blue sky  
Diekirch 14Feb01 11:45 269.3 blue sky 45.9
Diekirch 13Feb01 12:00 260.4 blue sky 51.9
Diekirch 10Feb01 12:16 330.1 light haze 32.3
Diekirch 08Feb01 12:40 453.0 heavy clouds 64.1
Diekirch 06Feb01 12:30 300.2 heavy clouds 21.6
Diekirch 01Feb01 12:21 351.9 light haze 20.8
Diekirch 27Jan01 12:30 356.5 heavy clouds 76.9
Diekirch 16Jan01 11:50 372.6 very light haze 25.5
Diekirch 14Jan01 12:03 339.2 blue sky 42.8
Diekirch 13Jan01 12:15 342.1 blue sky 63.6
Diekirch 12Jan01 11:36 316.7 very light haze 37.5