NEWS

These are the news starting 01 Jan 2020
Click here for the news of the previous years.

22
Jan
20
I have updated the last graph by correcting some date problems (the Beidweiler data are from an EEA file, and the values are not always in chronological order, there are also many missing values...). The following figure of the daily averages shows that our PM2.5 data are really excellent (look at the peaks, the min. and max.). The PM10 Airvisual data (not shown here) are too low (too similar to the PM2.5 readings).

More on the BLOG ! (added 23-Jan-20)

21
Jan
20
Our Airvisual fine particle sensor (PM2.5 and PM10) worked for a full year without major problems. Click on the picture below to see how good our PM2.5 measurements follow those of the Beidweiler station (which we usually use as a reference). Beiweiler has a hugely expensive Horiba sensor, compared to our Airvisual Pro (by iQAIR).

15
Jan
20

I built a power-supply for the vintage Haenni Solar111 sunshine duration sensor (see last year news), which is spinning relentlessly on our terrace. A first readout of the logger data shows no problems. The sensor is now configured to run continuously 24/24, and its output is stored simultaneously on two dataloggers: a vintage refurbished Mikromec logger from the 90's, and a more recent one from Onset. The output signal is either -3.77V when the sun does not shine, or +4.17V when it shines. The power-supply allows several modes of operation (e.g. motor/electronics shut-off during the night, but heating reaming on). Readings are done every minute.

13
Jan
20
There was a serious problem: the logger was not logging since the last data download (my fault :-(( ). It will restart today at 18:00 UTC.
12
Jan
20
The Excel file "2019_only.xls" has been created and is available at the data archive folder. This file holds all 2019 measurements, with daily and monthly's subset and readings from the Meteolux Findel station.
01
Jan
20
1. The usual dogs-dinner in the 7days plot due to Gnuplot problems with handling previous and new year (the logger files do not contain the year number). This will be self healing in the next 7 days.
2. Upload dec19.dat  into data archive.
 

 

 

 


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