Total Ozone Thickness 2018

jump straight-on to the data

Look here: 1. Intercomparison between the ozone measurements of the Microtops II and those made by the Brewer instruments at the RMI at Uccle: 2017, 2016, 2012, 2011, previous years.
2. Overplot of 2017 (
new!) Uccle and meteoLCD total ozone measurements.
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, many years missing!)
4. Older dobson files are in the data archive

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 = 4952' North 
longitude = 610'
altitude = 218 m a.s.l.
click to enlarge!

 
Location Date UTC Time Thickness
[DU]
Sky Condition Ozone&NO2
[ug/m3]
Diekirch 20May18 10:18 385.2 many clouds 87.8
Diekirch 19May18 10:23 384.9 many clouds 68.7
Diekirch 18May18 10:26 376.2 blue sky 75.4
Diekirch 17May18 10:00 382.5 some clouds 71.2
Diekirch 16May18 11:13 379.5 many clouds 111.4
Diekirch 15May18 10:32 389.7 some clouds 120.5
Diekirch 12May18 11:30 338.2 some clouds 102.6
Diekirch 09May18 10:59 340.2 some clouds 116.2
Diekirch 08May18 13:10 317.9 blue sky 132.8
Diekirch 07May18 10:20 349.3 blue sky 101.7
Diekirch 06May18 10:52 334.1 blue sky 112.2
Diekirch 05May18 11:16 334.3 blue sky 102.7
Diekirch 04May18 11:16 344.7 blue sky 105.7
Diekirch 03May18 11:55 365.1 many clouds 89.8
Diekirch 02May18 10:53 371.8 very hazy 88.3
Diekirch 01May18 11:28 381.3 heavy clouds 83.0
Diekirch 29Apr18 10:17 330.8 heavy clouds 61.0
Diekirch 28Apr18 13:28 329.1 many clouds 87.5
Diekirch 27Apr18 11:14 336.9 hazy 105.2
Diekirch 26Apr18 11:05 374.7 many clouds 81.8
Diekirch 25Apr18 11:22 306.2 many clouds 45.3
Diekirch 24Apr18 12:16 309.1 many clouds 101.7
Diekirch 23Apr18 12:25 337.5 heavy clouds 91.9
Diekirch 22Apr18 12:41 329.8 hazy 133.4
Diekirch 21Apr18 11:03 321.8 light haze 134.8
Diekirch 20Apr18 11:06 302.8 blue sky 117.9
Diekirch 18Apr18 11:03 299.7 blue sky 114.7
Diekirch 17Apr18 12:00 307.9 light haze 78.6
Diekirch 15Apr18 10:04 345.4 heavy clouds 69.8
Diekirch 14Apr18 10:03 354.8 many clouds 62.6
Diekirch 11Apr18 11:03 373.0 blue sky 72.0
Diekirch 08Apr18 11:45 340.7 light haze 65.6
Diekirch 07Apr18 11:21 335.4 blue sky 70.6
Diekirch 06Apr18 12:14 342.3 blue sky 79.0
Diekirch 03Apr18 07:42 368.8 heavy clouds 33.4
Diekirch 02Apr18 12:57 366.7 heavy clouds 78.2
Diekirch 01Apr18 13:30 403.4 many clouds 61.9
Diekirch 31Mar18 11:24 402.4 some clouds 51.5
Diekirch 30Mar18 09:53 404.1 some clouds 65.1
Diekirch 29Mar18 13:03 395.4 some clouds 78.2
Diekirch 26Mar18 09:58 408.0 many clouds 57.6
Diekirch 25Mar18 09:06 391.8 light haze 23.2
Diekirch 24Mar18 11:34 380.5 many clouds 60.5
Diekirch 21Mar18 12:22 410.9 some clouds 69.4
Diekirch 19Mar18 11:20 423.2 some clouds 68.5
Diekirch 16Mar18 13:35 395.7 some clouds 78.4
Diekirch 14Mar18 11:00 410.3 some clouds 59.7
Diekirch 12Mar18 11:30 389.7 many clouds 72.6
Diekirch 11Mar18 12:09 378.9 many clouds 51.8
Diekirch 06Mar18 13:33 429.4 heavy clouds 59.7
Diekirch 05Mar18 11:42 421.0 hazy 51.5
Diekirch 03Mar18 13:10 408.3 hazy 50.9
Diekirch 28Feb18 12:00 480.3 blue sky 55.7
Diekirch 27Feb18 13:01 460.1 blue sky 63.4
Diekirch 26Feb18 12:29 456.8 some clouds na
Diekirch 25Feb18 12:08 382.4 blue sky 61.3
Diekirch 24Feb18 11:42 334.3 blue sky 63.0
Diekirch 23Feb18 12:28 345.8 blue sky 63.2
Diekirch 20Feb18 11:43 340.3 light haze 43.4
Diekirch 18Feb18 12:04 360.3 blue sky 43.8
Diekirch 16Feb18 12:07 361.5 blue sky 48.6
Diekirch 15Feb18 12:08 361.5 some clouds 42.9
Diekirch 13Feb18 12:11 383.2 blue sky 69.8
Diekirch 12Feb18 11:45 398.3 heavy clouds 69.6
Diekirch 11Feb18 10:36 418.0 heavy clouds 56.0
Diekirch 10Feb18 12:22 432.0 heavy clouds 41.1
Diekirch 08Feb18 12:35 422.1 light haze 52.5
Diekirch 07Feb18 12:10 386.4 heavy clouds 38.4
Diekirch 05Feb18 12:25 381.6 many clouds 41.0
Diekirch 04Feb18 12:01 372.5 many clouds 44.6
Diekirch 03Feb18 12:22 335.1 heavy clouds 51.8
Diekirch 02Feb18 12:58 366.7 heavy clouds 51.7
Diekirch 21Jan18 11:15 329.9 many clouds 56.5
Diekirch 18Jan18 10:36 291.4 many clouds 76.3
Diekirch 16Jan18 11:19 294.6 many clouds 76.2
Diekirch 10Jan18 12:10 333.7 heavy clouds 43.8
Diekirch 09Jan18 13:11 367.8 heavy clouds 20.7
Diekirch 03Jan18 11:09 377.6 heavy clouds na
Diekirch 02Jan18 11:41 355.8 heavy clouds na

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:

Green DU's correspond to a new calibration factor of 0.9422 applied to #3012 measurements by Mike Zimmer starting 02Jun16 ! This new calibration factor has been found by a new comparison over several measurements made from March to July 2016.


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.

Green ground ozone data should be considered unreliable!


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