Total Ozone Thickness 2011

jump straight-on to the data

Look here: 1. Intercomparison between the ozone measurements of the Microtops II and those made by the Brewer instrument at the RMI at Uccle and several satellites up to 2005.
2. Overplot of 2010 Uccle and meteoLCD total ozone measurements.(new!)
3. Animated Gif with all meteoLCD plots from WOUDC (see station 412). meteoLCD and Uccle and animated gif with all Uccle (Brewer#16) plots from 1983 to 2010
4. 3D plot of total ozone column for latitude region [45 to 50] from 1964 to 2007 and  maps of all of meteoLCD measurements (from WOUDC)
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 (link has changed!)
Ozone Distribution (NH + SH) Global Ozone maps from Environment Canada 
Northern Hemisphere Ozone Map Ozone map generated from all Northern Hemisphere stations by the WOUDC
The coordinates of DIEKIRCH are:
latitude = 49°52' North 
longitude = 6°10'
altitude = 218 m a.s.l. 		click to enlarge!
 
Location Date UTC Time Thickness
[DU]		 Sky Condition Ground ozone
[ug/m3]
Diekirch 30Dec11 11:43 275.5 heavy clouds 47.6
Diekirch 24Dec11 12:40 255.2 many clouds 45.4
Diekirch 20Dec11 12:59 283.1 many clouds 7.6
Diekirch 17Dec11 12:01 319.2 many clouds 43.5
Diekirch 14Dec11 11:54 270.8 many clouds 51.2
Diekirch 12Dec11 12:46 300.4 heavy clouds 44.5
Diekirch 11Dec11 12:25 249.8 light haze 13.2
Diekirch 10Dec11 12:04 258.1 some clouds 45.7
Diekirch 22Nov11 11:13 253.2 light haze 11.9
Diekirch 20Nov11 12:03 236.4 heavy clouds 5.3
Diekirch 15Nov11 13:30 203.4 very hazy 16.0
Diekirch 12Nov11 11:33 238.2 light haze 9.2
Diekirch 08Nov11 12:22 267.8 very hazy 18.3
Diekirch 06Nov11 12:06 251.7 light haze 29.3
Diekirch 05Nov11 12:04 253.1 light haze 13.8
Diekirch 02Nov11 12:53 253.1 many clouds 44.3
Diekirch 31Oct11 13:04 245.5 light haze 19.2
Diekirch 26Oct11 10:55 288.7 heavy clouds 50.6
Diekirch 23Oct11 11:39 273.5 blue sky 35.7
Diekirch 22Oct11 13:24 277.0 blue sky 39.3
Diekirch 21Oct11 11:00 302.2 blue sky 19.0
Diekirch 19Oct11 11:02 280.6 heavy clouds 40.0
Diekirch 17Oct11 12:25 232.2 heavy clouds 35.6
Diekirch 16Oct11 11:46 244.3 blue sky 36.3
Diekirch 15Oct11 11:23 251.2 blue sky 37.4
Diekirch 14Oct11 11:03 251.1 blue sky 35.1
Diekirch 03Oct11 11:02 261.0 blue sky 42.1
Diekirch 02Oct11 11:14 259.8 blue sky 80.0
Diekirch 01Oct11 12:13 266.1 blue sky 67.0
Diekirch 30Sep11 11:19 267.2 blue sky 43.4
Diekirch 29Sep11 11:00 259.8 blue sky 63.7
Diekirch 27Sep11 11:03 264.6 blue sky 60.2
Diekirch 26Sep11 11:00 270.6 light haze 42.5
Diekirch 25Sep11 13:34 267.5 blue sky 81.6
Diekirch 24Sep11 10:54 260.5 blue sky 39.3
Diekirch 22Sep11 11:27 261.1 many clouds 53.5
Diekirch 19Sep11 12:07 279.7 some clouds 39.0
Diekirch 16Sep11 11:09 261.9 light haze 46.0
Diekirch 14Sep11 11:01 269.3 some clouds 41.5
Diekirch 12Sep11 12:34 253.2 some clouds 44.0
Diekirch 10Sep11 10:47 257.8 some clouds 27.0
Diekirch 01Sep11 11:18 289.1 light haze 61.0
Diekirch 31Aug11 11:41 281.1 some clouds 54.4
Diekirch 02Aug11 13:01 282.6 some clouds 91.2
Diekirch 01Aug11 11:27 281.4 some clouds 57.5
Diekirch 29Jul11 11:12 309.4 hazy 85.6
Diekirch 28Jul11 12:08 315.8 heavy clouds 70.1
Diekirch 26Jul11 10:57 324.5 heavy clouds 62.2
Diekirch 25Jul11 11:57 316.2 heavy clouds 57.7
Diekirch 23Jul11 12:33 340.6 heavy clouds 54.3
Diekirch 18Jul11 12:37 338.1 heavy clouds 36.5
Diekirch 16Jul11 11:05 313.1 heavy clouds 81.9
Diekirch 15Jul11 10:34 309.5 heavy clouds 67.6
Diekirch 12Jul11 11:05 318.9 many clouds 99.4
Diekirch 11Jul11 11:04 326.0 many clouds 57.1
Diekirch 10Jul11 11:46 326.5 many clouds 70.2
Diekirch 09Jul11 11:56 325.3 many clouds 54.5
Diekirch 06Jul11 11:14 319.9 many clouds 56.1
Diekirch 05Jul11 11:49 318.3 light haze 99.5
Diekirch 04Jul11 11:13 318.3 blue sky 50.5
Diekirch 03Jul11 10:59 320.0 many clouds 56.6
Diekirch 28Jun11 12:22 294.5 heavy clouds 117.1
Diekirch 27Jun11 11:15 307.1 blue sky 91.4
Diekirch 26Jun11 12:54 304.0 some clouds 44.9
Diekirch 24Jun11 11:22 341.0 many clouds 55.9
Diekirch 18Jun11 11:31 361.1 some clouds 53.3
Diekirch 17Jun11 11:10 320.8 heavy clouds 69.9
Diekirch 15Jun11 11:23 305.4 many clouds 11:23
Diekirch 12Jun11 11:40 330.7 some clouds 79.7
Diekirch 11Jun11 11:40 340.4 many clouds 69.5
Diekirch 07Jun11 11:20 309.4 many clouds 74.1
Diekirch 25May11 11:04 311.1 blue sky 67.1
Diekirch 24May11 11:05 310.6 very hazy 52.2
Diekirch 23May11 11:09 321.8 light haze 64.4
Diekirch 22May11 12:07 322.6 some clouds 88.3
Diekirch 21May11 11:09 328.4 many clouds 86.6
Diekirch 20May11 10:16 339.6 some clouds 41.4
Diekirch 18May11 11:12 325.6 some clouds 64.2
Diekirch 13May11 11:15 314.4 many clouds 86.0
Diekirch 12May11 11:11 315.3 many clouds 86.8
Diekirch 10May11 11:07 312.1 light haze 104.5
Diekirch 09May11 11:12 312.8 light haze 92.2
Diekirch 06May11 11:02 325.5 very hazy 95.2
Diekirch 04May11 11:06 350.3 blue sky 75.4
Diekirch 03May11 11:04 335.9 many clouds 75.9
Diekirch 02May11 11:11 322.6 light haze 90.2
Diekirch 01May11 11:40 317.5 some clouds 99.2
Diekirch 30Apr11 12:00 325.9 many clouds 97.1
Diekirch 29Apr11 11:09 330.7 heavy clouds 93.2
Diekirch 26Apr11 11:11 340.3 many clouds 105.4
Diekirch 25Apr11 12:36 324.3 blue sky 109.7
Diekirch 24Apr11 10:25 355.2 light haze 97.4
Diekirch 23Apr11 13:00 328.9 blue sky 117.2
Diekirch 22Apr11 11:54 336.2 light haze 123.2
Diekirch 21Apr11 11:37 332.2 blue sky 105.8
Diekirch 19Apr11 12:07 325.3 light haze 104.8
Diekirch 18Apr11 11:50 328.6 light haze 96.5
Diekirch 15Apr11 12:35 318.6 very hazy 82.0
Diekirch 13Apr11 12:25 343.0 very hazy 74.0
Diekirch 11Apr11 12:15 293.6 light haze 76.3
Diekirch 10Apr11 11:34 280.7 light haze 66.5
Diekirch 09Apr11 11:45 279.3 blue sky 61.5
Diekirch 08Apr11 11:13 286.0 some clouds 60.1
Diekirch 06Apr11 11:06 288.3 very hazy 44.7
Diekirch 05Apr11 11:21 303.8 very hazy 56.7
Diekirch 02Apr11 11:04 281.0 blue sky 32.6
Diekirch 28Mar11 09:38 285.0 blue sky 34.2
Diekirch 27Mar11 11:54 333.5 very hazy 52.6
Diekirch 25Mar11 12:15 291.2 light haze 79.1
Diekirch 24Mar11 12:01 320.0 light haze 64.0
Diekirch 23Mar11 12:15 347.8 light haze 62.1
Diekirch 22Mar11 12:04 366.8 light haze 67.5
Diekirch 21Mar11 12:06 367.8 blue sky 60.7
Diekirch 20Mar11 11:39 379.3 light haze 64.0
Diekirch 19Mar11 12:40 378.8 some clouds 53.3
Diekirch 15Mar11 12:22 351.6 light haze 64.2
Diekirch 12Mar11 12:05 342.4 some clouds 63.1
Diekirch 11Mar11 12:38 322.7 heavy clouds 53.7
Diekirch 08Mar11 12:08 320.2 light haze 33.5
Diekirch 07Mar11 12:02 298.6 blue sky 57.1
Diekirch 06Mar11 12:24 308.1 blue sky 56.1
Diekirch 05Mar11 12:15 328.1 light haze 42.5
Diekirch 04Mar11 12:04 343.8 blue sky 56.5
Diekirch 03Mar11 14:34 333.4 blue sky 64.9
Diekirch 02Mar11 12:01 350.4 some clouds 62.2
Diekirch 01Mar11 12:08 355.9 blue sky 41.7
Diekirch 28Feb11 12:42 354.3 many clouds 46.2
Diekirch 17Feb11 13:08 379.4 some clouds 27.0
Diekirch 13Feb11 12:34 309.7 many clouds 49.3
Diekirch 12Feb11 12:15 308.1 kight haze 13.5
Diekirch 09Feb11 12:27 295.3 light haze 17.7
Diekirch 08Feb11 11:36 346.2 many clouds 45.0
Diekirch 07Feb11 12:27 294.6 light haze 33.8
Diekirch 31Jan11 12:37 318.2 blue sky 29.7
Diekirch 30Jan11 12:02 342.8 blue sky 54.8
Diekirch 29Jan11 12:24 331.0 blue sky 40.5
Diekirch 21Jan11 12:00 388.1 some clouds 11.7
Diekirch 19Jan11 12:30 346.8 many clouds 20.1
Diekirch 16Jan11 13:01 306.6 many clouds 11.6
Diekirch 08Jan11 12:13 304.0 many clouds 50.0
Diekirch 02Jan11 12:33 264.5  blue sky 47.2

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!

Attention: blue lines correspond to measurements done using instrument #3012 (operator Mike Zimmer). The data in the table are the original readings multiplied by the calibration factor 0.908658  (new calibrated instrument_5375 = 0.908658*instrument_3012) . Comparison tests made from 15Sep to 02Oct 2009.

 Starting 15 Sep 2009, Microtops #5375 is back from calibration at Mauna Loa. Purple data correspond to the new calibrated readings. There is a big difference between the readings before and after calibration. For some time, measurements will be made with both Microtops, and a conclusion drawn thereafter.

On 23 Jan 2011 the WOUDC has 498 contributing stations; only 57 ( = 11.4%) have full yearly data for the 2001-2010 period. MeteoLCD is among them!

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