Total Ozone Thickness 2010

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 over the last 8 years.
2. Overplot of 2009 Uccle and meteoLCD total ozone measurements.(new!)
3. 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 18Dec10 12:25 441.2 heavy clouds 36.7
Diekirch 04Dec10 12:27 350.3 heavy clouds 34.8
Diekirch 30Nov10 12:32 320.3 very hazy 10.8
Diekirch 24Nov10 13:05 293.4 heavy clouds 36.9
Diekirch 16Nov10 11:21 288.4 light haze 26.1
Diekirch 04Nov10 12:08 246.7 heavy clouds 26.6
Diekirch 02Nov10 12:15 258.2 many clouds 41.3
Diekirch 01Nov10 13:09 300.7 some clouds 50.6
Diekirch 31Oct10 12:20 305.4 blue sky 45.9
Diekirch 29Oct10 11:16 281.3 light haze 29.4
Diekirch 27Oct10 11:27 271.5 heavy clouds 27.2
Diekirch 26Oct10 11:06 292.9 light haze 11.2
Diekirch 25Oct10 11:03 331.6 many clouds 52.2
Diekirch 24Oct10 11:01 320.2 some clouds 48.9
Diekirch 21Oct10 11:03 278.4 some clouds 30.5
Diekirch 20Oct10 11:08 292.1 heavy clouds 45.5
Diekirch 19Oct10 11:03 275.4 heavy clouds 25.4
Diekirch 13Oct10 11:02 265.1 light haze 23.1
Diekirch 12Oct10 11:08 262.4 blue sky 54.9
Diekirch 11Oct10 11:02 267.8 blue sky 61.7
Diekirch 09Oct10 12:05 269.0 blue sky 28.6
Diekirch 07Oct10 11:28 270.6 some clouds 20.8
Diekirch 06Oct10 11:14 263.0 many clouds 32.8
Diekirch 03Oct10 11:07 273.9 blue sky 11:07
Diekirch 29Sep10 11:12 276.3 many clouds 21.9
Diekirch 25Sep10 11:18 306.1 many clouds 62.1
Diekirch 23Sep10 11:45 266.8 light haze 48.8
Diekirch 22Sep10 11:06 279.3 blue sky 42.7
Diekirch 21Sep10 11:22 282.3 blue sky 63.5
Diekirch 20Sep10 11:00 295.7 blue sky 44.7
Diekirch 19Sep10 11:11 293.9 light haze 58.6
Diekirch 18Sep10 11:41 304.2 many clouds 62.6
Diekirch 17Sep10 10:57 321.2 many clouds 46.7
Diekirch 15Sep10 11:46 302.4 many clouds 59.7
Diekirch 13Sep10 12:24 301.9 many clouds 56.5
Diekirch 11Sep10 11:58 287.5 light haze 39.0
Diekirch 06Sep10 12:02 310.9 light haze 67.4
Diekirch 05Sep10 11:59 314.2 light haze 69.7
Diekirch 03Sep10 12:15 302.7 light haze 58.1
Diekirch 02Sep10 11:42 312.1 very hazy 48.5
Diekirch 01Sep10 12:09 298.9 light haze 61.9
Diekirch 31Aug10 11:43 302.3 light haze 88.0
Diekirch 24Aug10 11:47 297.5 light haze 50.9
Diekirch 23Aug10 12:10 282.8 many clouds 41.6
Diekirch 22Aug10 12:25 281.0 many clouds 52.7
Diekirch 21Aug10 11:49 285.9 blue sky 80.8
Diekirch 20Aug10 11:53 292.6 light haze 66.8
Diekirch 19Aug10 11:52 289.4 some clouds 57.6
Diekirch 18Aug10 12:30 300.0 many clouds 47.3
Diekirch 14Aug10 12:08 326.8 many clouds 87.6
Diekirch 12Aug10 12:30 327.6 many clouds 66.7
Diekirch 09Aug10 11:11 308.7 many clouds 51.1
Diekirch 07Aug10 11:09 314.7 some clouds 77.8
Diekirch 06Aug10 12:05 335.2 some clouds 63.0
Diekirch 05Aug10 11:39 355.1 very hazy 58.3
Diekirch 03Aug10 11:15 326.7 very hazy 57.3
Diekirch 01Aug10 12:27 315.8 very hazy 73.7
Diekirch 31Jul10 12:52 310.9 many clouds 86.9
Diekirch 28Jul10 11:22 345.1 many clouds 33.8
Diekirch 27Jul10 12:06 317.5 some clouds 53.4
Diekirch 24Jul10 12:04 337.1 some clouds 63.0
Diekirch 21Jul10 11:30 322.2 many clouds 113.7
Diekirch 20Jul10 11:00 312.5 light haze 124.7
Diekirch 18Jul10 11:36 322.2 blue sky 71:24
Diekirch 15Jul10 12:38 317.6 some clouds 87.1
Diekirch 14Jul10 12:34 316.7 light haze 124.9
Diekirch 13Jul10 12:24 311.1 some clouds 64.9
Diekirch 12Jul10 12:31 311.7 heavy clouds 74.0
Diekirch 11Jul10 11:33 295.7 some clouds 112.1
Diekirch 10Jul10 11:03 298.0 some clouds 110.0
Diekirch 07Jul10 12:04 306.1 blue sky 111.2
Diekirch 06Jul10 11:39 337.5 many clouds 81.7
Diekirch 05Jul10 11:04 301.5 heavy clouds 44.8
Diekirch 04Jul10 11:08 348.4 many clouds 94.3
Diekirch 02Jul10 11:49 312.0 blue sky 118.1
Diekirch 01Jul10 12:01 322.4 many clouds 128.1
Diekirch 30Jun10 11:02 321.8 some cloouds 66.1
Diekirch 28Jun10 11:02 333.3 light haze 128.7
Diekirch 27Jun10 11:07 325.8 light haze 119.4
Diekirch 26Jun10 10:23 313.4 light haze 110.1
Diekirch 25Jun10 11:24 326.5 some clouds 124.7
Diekirch 23Jun10 11:05 327.2 some clouds 110.3
Diekirch 21Jun10 10:19 342.6 heavy clouds 53.0
Diekirch 16Jun10 10:55 325.2 light haze 76.3
Diekirch 15Jun10 11:00 336.5 some clouds 72.0
Diekirch 13Jun10 10:49 365.5 some clouds 56.2
Diekirch 07Jun10 10:55 338.3 some clouds 55.9
Diekirch 05Jun10 11:44 330.6 blue sky 124.9
Diekirch 04Jun10 11:07 338.1 blue sky 102.3
Diekirch 29May10 12:10 357.6 light haze 87.4
Diekirch 22May10 11:50 321.3 blue sky 78.2
Diekirch 21May10 10:58 327.9 some clouds 86.5
Diekirch 20May10 11:34 313.3 blue sky 85.1
Diekirch 19May10 11:12 327.7 heavy clouds 51.7
Diekirch 16May10 11:42 388.0 many clouds 71.2
Diekirch 15May10 11:09 393.3 many clouds 66.3
Diekirch 10May10 12:41 402.9 heavy clouds 52.3
Diekirch 08May10 09:59 405.7 heavy clouds 47.5
Diekirch 05May10 11:07 377.3 many clouds 62.5
Diekirch 03May10 10:47 402.8 many clouds 32.0
Diekirch 02May10 11:28 395.2 heavy clouds 51.0
Diekirch 28Apr10 11:03 328.8 blue sky 90.9
Diekirch 24Apr10 11:14 323.8 blue sky 96.5
Diekirch 23Apr10 11:06 373.5 light haze 81.4
Diekirch 22Apr10 11:14 365.2 light haze 65.6
Diekirch 20Apr10 11:34 350.0 heavy clouds 95.5
Diekirch 19Apr10 11:04 352.8 light haze 88.6
Diekirch 16Apr10 12:08 356.8 light haze 58.8
Diekirch 14Apr10 11:02 406.9 heavy clouds 90.0
Diekirch 12Apr10 12:06 397.8 heavy clouds 51.8
Diekirch 10Apr10 12:30 354.3 some clouds 62.5
Diekirch 07Apr10 11:58 339.1 some clouds 57.8
Diekirch 06Apr10 11:52 374.6 blue sky 72.0
Diekirch 05Apr10 12:10 385.3 light haze 63.7
Diekirch 01Apr10 11:38 390.3 very hazy 52.4
Diekirch 31Mar10 12:00 378.3 some clouds 61.9
Diekirch 29Mar10 14:40 347.6 some clouds 57.9
Diekirch 28Mar10 13:42 396.9 heavy clouds 60.9
Diekirch 24Mar10 12:01 326.5 very hazy 58.9
Diekirch 23Mar10 12:04 334.5 many clouds 49.5
Diekirch 22Mar10 12:53 336.7 heavy clouds 58.7
Diekirch 19Mar10 12:01 328.1 some clouds 77.2
Diekirch 18Mar10 12:08 336.2 light haze 62.0
Diekirch 17Mar10 12:05 351.7 very hazy 62.2
Diekirch 13Mar10 12:29 402.8 light haze 51.4
Diekirch 12Mar10 12:30 402.8 many clouds 54.4
Diekirch 10Mar10 12:07 377.0 light haze 70.4
Diekirch 09Mar10 12:29 384.6 blue sky 69.2
Diekirch 08Mar10 12:26 409.1 blue sky 63.7
Diekirch 07Mar10 12:29 437.8 blue sky 60.7
Diekirch 06Mar10 13:17 437.1 heavy clouds 47.6
Diekirch 05Mar10 12:34 416.0 many clouds 69.5
Diekirch 03Mar10 12:18 398.2 light haze 58.6
Diekirch 02Mar10 12:32 407.7 many clouds 67.5
Diekirch 01Mar10 12:23 376.0 many clouds 57.9
Diekirch 27Feb10 12:25 367.7 some clouds 69.6
Diekirch 18Feb10 11:40 346.0 some clouds NA
Diekirch 16Feb10 11:50 305.7 blue sky 114.1
Diekirch 13Feb10 11:22 357.4 heavy clouds 35.4
Diekirch 10Feb10 12:04 396.2 some clouds 55.6
Diekirch 08Feb10 12:48 381.5 very hazy 41.6
Diekirch 04Feb10 12:21 316.7 very hazy 23.8
Diekirch 01Feb10 12:14 344.8 many clouds 47.3
Diekirch 31Jan10 12:46 319.2 many clouds 56.7
Diekirch 27Jan10 11:48 285.3 some clouds 43.3
Diekirch 17Jan10 12:02 340.6 many clouds 48.0
Diekirch 14Jan10 11:20 350.8 heavy clouds 18.8
Diekirch 08Jan10 12:48 364.7 heavy clouds 28.7
Diekirch 04Jan10 12:53 334.5 some clouds 30.3
Diekirch 02Jan10 12:53 405.6 many clouds 34.8

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 9th Nov.2010, the calibration factor 0.897 will be used, based on a comparison from 30Jun to 26Oct 2010 (14 days of neraly simultaneous measurements). See calibration graph here. A linear fit not forced through the origin gives no better result (same R2).

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.

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