Total Ozone Thickness 2005

jump straight-on to the data

new... An updated  intercomparison between the ozone measurements of the Microtops II and those made by the Brewer instrument at the RMI at Uccle over the last 7 years (1997 to 2003)!. 

other near-live or very recent total ozone data:
Thickness of the ozone layer at Uccle Measured by the Royal Meteorological Institute (RMI) of Belgium; shows mean and variance of all data from 1971 on
Ozone Distribution over Europe (NOAA satellite) Ozone map from data measured by the NOAA ( the GOME instrument on the ERS-2 satellite seems to be definitively out of order!)
Northern Hemisphere Ozone Map Ozone map generated from all Northern Hemisphere stations by the WOUDC

The coordinates of DIEKIRCH are:
latitude = 4952' North 
longitude = 610'
altitude = 218 m a.s.l.
click to enlarge!

Location Date UTC Time Thickness
[DU]
Sky Condition Ground ozone
[ug/m3]
Diekirch 25Dec05 13:06 363.0 many clouds 38.8
Diekirch 17Dec05 12:41 376.0 many clouds 46.5
Diekirch 11Dec05 12:04 305.0 blue sky NA
Diekirch 10Dec05 12:09 301.4 blue sky NA
Diekirch 01Dec05 12:44 290.5 blue sky 27.5
Diekirch 25Nov05 12:00 354.1 heavy clouds 40.2
Diekirch 24Nov05 12:50 302.6 heavy clouds 14.1
Diekirch 23Nov05 11:23 324.4 heavy clouds 28.1
Diekirch 22Nov05 12:09 308.6 blue sky 33.0
Diekirch 19Nov05 12:18 330.0 many clouds 30.0
Diekirch 18Nov05 11:57 308.5 some clouds 48.1
Diekirch 17Nov05 13:58 249.2 many clouds 33.2
Diekirch 13Nov05 13:07 305.8 hazy 34.5
Diekirch 06Nov05 12:41 294.6 heavy clouds 36.8
Diekirch 01Nov05 12:04 290.1 some clouds 61.6
Diekirch 31Oct05 12:10 251.6 hazy 56.1
Diekirch 30Oct05 12:07 254.7 blue sky 61.5
Diekirch 29Oct05 11:08 260.4 blue sky 36.1
Diekirch 28Oct05 11:03 261.2 blue sky 37.7
Diekirch 27Oct05 11:33 274.7 light haze 45.7
Diekirch 26Oct05 11:02 288.3 light haze 37.9
Diekirch 23Oct05 11:33 320.5 heavy clouds 51.7
Diekirch 18Oct05 11:03 279.0 some clouds 85.9
Diekirch 16Oct05 11:07 301.3 blue sky 93.5
Diekirch 15Oct05 11:45 300.7 light haze 75.5
Diekirch 14Oct05 11:10 310.3 light haze 11.1
Diekirch 13Oct05 12:09 304.8 light haze 44.8
Diekirch 12Oct05 11:06 309.6 blue sky 95.7
Diekirch 11Oct05 11:03 316.4 light haze 34.6
Diekirch 09Oct05 12:01 292.7 light haze 19.3
Diekirch 08Oct05 12:51 315.3 very hazy 39.5
Diekirch 07Oct05 11:04 312.1 light haze 39.4
Diekirch 06Oct05 11:50 302.4 light haze 46.6
Diekirch 02Oct05 11:13 342.7 heavy clouds 41.9
Diekirch 29Sep05 13:15 327.6 some clouds 50.0
Diekirch 28Sep05 11:06 326.1 many clouds 52.0
Diekirch 27Sep05 11:04 295.4 some clouds 40.3
Diekirch 25Sep05 11:02 310.9 some clouds 68.2
Diekirch 23Sep05 11:10 306.4 some clouds 63.9
Diekirch 22Sep05 11:32 298.1 blue sky 89.1
Diekirch 21Sep05 11:54 280.8 blue sky 70.6
Diekirch 20Sep05 11:18 291.4 blue sky 59.0
Diekirch 19Sep05 11:27 311.0 blue sky 62.3
Diekirch 18Sep05 11:00 306.4 blue sky 87.4
Diekirch 14Sep05 10:36 303.6 many clouds 91.4
Diekirch 13Sep05 11:11 305.4 many clouds 64.9
Diekirch 08Sep05 11:04 319.5 hazy NA
Diekirch 07Sep05 11:12 305.3 blue sky NA
Diekirch 05Sep05 11:06 324.3 light haze NA
Diekirch 04Sep05 11:08 319.9 light haze NA
Diekirch 03Sep05 11:13 334.4 very hazy NA
Diekirch 31Aug05 11:00 308.9 light haze NA
Diekirch 30Aug05 11:04 319.2 blue sky NA
Diekirch 29Aug05 11:45 323.8 blue sky NA
Diekirch 28Aug05 11:00 325.3 very hazy 83.1
Diekirch 27Aug05 11:26 346.2 hazy 42.6
Diekirch 24Aug05 11:02 334.8 many clouds 64.9
Diekirch 09Aug05 16:18 314.0 some clouds 91.9
Diekirch 04Aug05 12:11 317.1 heavy clouds 66.6
Diekirch 30Jul05 12:16 350.1 many clouds 64.5
Diekirch 29Jul05 15:16 305.2 many clouds 108.5
Diekirch 28Jul05 13:06 315.0 many clouds 123.2
Diekirch 22Jul05 11:17 346.8 heavy clouds 65.0
Diekirch 21Jul05 10:00 343.5 heavy clouds 56.0
Diekirch 18Jul05 12:13 343.5 some clouds 131.5
Diekirch 16Jul05 14:13 331.9 some clouds 121.7
Diekirch 15Jul05 12:56 345.6 heavy clouds 152.2
Diekirch 14Jul05 12:22 339.6 some clouds 160.4
Diekirch 13Jul05 12:25 366.6 many clouds 136.6
Diekirch 12Jul05 12:05 373.4 many clouds 108.0
Diekirch 10Jul05 11:15 365.1 many clouds 106.8
Diekirch 09Jul05 10:52 399.8 many clouds 87.7
Diekirch 05Jul05 10:59 389.3 many clouds 61.0
Diekirch 01Jul05 11:05 370.6 many clouds 55.6
Diekirch 29Jun05 11:06 335.6 many clouds 121.5
Diekirch 28Jun05 11:08 322.6 light haze 163.8
Diekirch 27Jun05 10:50 335.0 light haze 127.8
Diekirch 26Jun05 10:57 334.2 hazy 91.9
Diekirch 24Jun05 11:06 348.5 blue sky 156.5
Diekirch 22Jun05 11:04 320.2 light haze 127.5
Diekirch 21Jun05 11:10 340.3 hazy 139.9
Diekirch 19Jun05 11:31 331.6 blue sky 112.9
Diekirch 18Jun05 11:02 342.1 some clouds 68.8
Diekirch 15Jun05 11:17 363.2 heavy clouds 107.7
Diekirch 12Jun05 09:40 382.5 many clouds 69.9
Diekirch 11Jun05 10:58 376.1 very hazy 66.7
Diekirch 10Jun05 10:55 379.0 many clouds 73.5
Diekirch 08Jun05 11:08 391.4 some clouds 68.9
Diekirch 04Jun05 12:13 398.8 heavy clouds 66.9
Diekirch 03Jun05 11:15 351.9 very hazy 139.2
Diekirch 01Jun05 11:00 362.4 many clouds 104.3
Diekirch 31May05 11:26 376.7 heavy clouds 67.0
Diekirch 29May05 11:15 345.2 light haze 131.0
Diekirch 27May05 11:06 312.8 blue sky 135.0
Diekirch 25May05 11:11 338.3 blue sky 87.3
Diekirch 20May05 12:08 358.8 some clouds 74.9
Diekirch 16May05 10:58 402.7 many clouds 105.8
Diekirch 15May05 12:07 391.7 many clouds 97.7
Diekirch 12May05 11:40 382.4 some clouds 94.0
Diekirch 08May05 11:57 390.0 many clouds 79.9
Diekirch 02May05 10:45 329.5 some clouds 109.2
Diekirch 01May05 11:03 325.9 blue sky 120.9
Diekirch 30Apr05 10:16 336.7 many clouds 49.1
Diekirch 27Apr05 11:19 415.1 heavy clouds 77.9
Diekirch 26Apr05 11:18 378.9 heavy clouds 53.4
Diekirch 24Apr05 11:44 383.8 heavy clouds 92.9
Diekirch 22Apr05 10:50 405.2 blue sky 95.5
Diekirch 21Apr05 12:04 409.6 blue sky 92.0
Diekirch 18Apr05 10:45 408.2 heavy clouds 72.5
Diekirch 17Apr05 10:42 403.7 heavy clouds 50.3
Diekirch 16Apr05 12:00 412.7 heavy clouds 52.3
Diekirch 13Apr05 11:02 345.0 many clouds 77.1
Diekirch 12Apr05 12:05 342.3 many clouds 58.0
Diekirch 11Apr05 10:50 350.7 blue sky 88.2
Diekirch 10Apr05 11:54 366.0 heavy clouds 52.5
Diekirch 26Mar05 12:10 347.3 many clouds 93.2
Diekirch 25Mar05 12:09 385.7 many clouds 70.7
Diekirch 23Mar05 12:00 341.9 some clouds 53.6
Diekirch 21Mar05 11:52 294.9 light haze 71.7
Diekirch 20Mar05 13:36 276.3 hazy 72.6
Diekirch 18Mar05 11:48 289.6 blue sky 56.6
Diekirch 17Mar05 13:00 335.4 heavy clouds 61.6
Diekirch 16Mar05 12:04 313.6 light haze 102.3
Diekirch 15Mar05 12:00 313.0 blue sky 75.0
Diekirch 12Mar05 12:07 346.4 many clouds 72.7
Diekirch 07Mar05 12:19 388.6 heavy clouds 71.4
Diekirch 06Mar05 12:01 377.8 many clouds 101.7
Diekirch 02Mar05 11:36 400.0 hazy 59.4
Diekirch 28Feb05 11:51 336.7 some clouds 81.0
Diekirch 26Feb05 09:24 325.8 blue sky 18.1
Diekirch 25Feb05 12:03 373.4 blue sky 92.3
Diekirch 20Feb05 12:06 409.4 some clouds 69.4
Diekirch 18Feb05 12:37 338.5 heavy clouds 50.6
Diekirch 17Feb05 12:19 348.5 some clouds 46.0
Diekirch 16Feb05 14:24 400.0 heavy clouds 47.8
Diekirch 15Feb05 12:23 439.5 heavy clouds 45.1
Diekirch 13Feb05 13:22 450.5 heavy clouds 72.0
Diekirch 09Feb05 14:24 391.5 very hazy 6.1
Diekirch 08Feb05 12:19 371.8 hazy 23.2
Diekirch 07Feb05 13:17 375.8 heavy clouds 33.7
Diekirch 06Feb05 12:17 320.0 blue sky 36.8
Diekirch 05Feb05 12:12 312.7 heavy clouds 42.6
Diekirch 04Feb05 11:49 292.0 some clouds 44.2
Diekirch 29Jan05 12:17 289.1 blue sky 35.4
Diekirch 24Jan05 11:52 455.0 many clouds 65.1
Diekirch 23Jan05 12:23 390.5 many clouds 66.4
Diekirch 22Jan05 12:10 376.0 many clouds 52.3
Diekirch 16Jan05 12:01 330.6 light haze 13.9
Diekirch 15Jan05 12:02 295.7 blue sky 22.6
Diekirch 13Jan05 12:18 309.2 many clouds 48.6
Diekirch 10Jan05 11:42 274.0 many clouds 31.7
Diekirch 09Jan05 11:59 303.1 heavy clouds 53.7
Diekirch 06Jan05 12:47 256.5 hazy 45.0
Diekirch 02Jan05 12:03 285.5 many clouds 81.6

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; the water vapour content of the atmosphere and the AOT (aerosol optical thickness) are 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 pressure of 1013.25 [HPa]. Common values are in the 250..350 DU range.

The previous years dobsonyy.html files and the Microtops measurement files can be found in the data area!

Starting 01 May 2003, the Microtops #3012 has been replaced by a new instrument, serial #5375. 

Please note:

Measurements of  16,18,21,22,28,29,30 July , 04,09 Aug and 07 Sep have been made by Frank Thillen using the older instrument #3012; the raw readings have been multiplied by 0.95 what is a best guess calibration factor for this instrument (see here).


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