Total Ozone Thickness 2012

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 2011 Uccle and meteoLCD total ozone measurements.
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 14Feb12 12:00 392.5 heavy clouds 41.1
Diekirch 12Feb12 12:15 306.6 light haze 44.1
Diekirch 11Feb12 12:30 360.2 blue sky 51.1
Diekirch 10Feb12 12:26 329.8 blue sky 47.6
Diekirch 06Feb12 11:25 441.7 blue sky 31.0
Diekirch 05Feb12 12:13 416.6 blue sky 38.7
Diekirch 04Feb12 13:10 359.5 blue sky 42.3
Diekirch 03Feb12 12:00 321.7 blue sky 52.9
Diekirch 02Feb12 12:28 283.8 blue sky 51.8
Diekirch 01Feb12 11:49 260.4 blue sky 51.7
Diekirch 31Jan12 12:14 265.7 light haze 34.8
Diekirch 23Jan12 11:59 287.4 heavy clouds 36.1
Diekirch 17Jan12 12:02 270.0 light haze 18.2
Diekirch 16Jan12 12:01 274.7 blue sky 38.4
Diekirch 15Jan12 13:07 248.6 some clouds 38.2
Diekirch 14Jan12 11:36 224.5 some clouds 26.1
Diekirch 11Jan12 12:03 236.7 blue sky 32.5
Diekirch 08Jan12 12:32 281.5 heavy clouds 42.6
Diekirch 07Jan12 12:36 275.4 heavy clouds 55.7
Diekirch 05Jan12 12:52 323.1 heavy clouds 47.2
Diekirch 04Jan12 12:10 268.9 heavy clouds 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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