F:\METEOLCD\news.html

NEWS

These are the news starting 01 Jan 2023
Click here for the news of the previous years.

04 Jun 23	Diekirch TV, the communications channel of the City of Diekirch, made a short report on meteoLCD. Cameraman Xavier Deschamps made the video and the shots, and as usual for meteo reports, weather was awful, with rain pouring down without any interruption. Sandie Lahure, the communications manager of the town of Diekirch, is the presenter. There are two glitches (for instance website is meteo.lcd.lu not www.meteo.lcd.lu), but overall we can be satisfied with this short presentation. Click here for the meteoLCD extract of the full video.
03 Jun 23	There was a fatal disruption in the afternoon of 01/06. Things are again ok today starting 13:00 UTC (I had to restart the Linux machine). No data lost due to our datalogger strategy.
01 May 23	Upload of the May may 23.dat data file to the data archive.
25 May 23	I transfered a lot of the info's given on the start page of our web site to the "Globalwanrming Sceptic" page, so that the list on the main page becomes again much shorter. Nothing has been deleted, all files are via the small icon with the red lightning flash or via the link https://meteo.lcd.lu/globalwarming/index.html. This page (and sub-chapters) are a treasure of information (which is often difficult to find) on climate and energy problesm,
17 May 23	Our web-site host went down for a couple of hours yesterday...Everything ok again, no data lost.
16 May 23	1. Even if the time is far from warm, I started the WBGT system today at ~12:00 UTC. 2. We had a few thunderstorms the 14th May, but our Boltek LD-350 system did not register anything... There seems no software problem, but a possible antenna or LD-350 box problem. I checked the antenna today, using as a noise generator a vintage mini-TV with a CRT (one also may use a CRT-type computer monitor, see left picture): the noise was registered, and the Astrogenics software interpreted the signals as lightning strokes.. so I see no apparent fault here. Let's wait for the next real storm!
04 May 23	Attention: there is a problem with the COM1 port of one of the main computers... no new data since about 14:00. I will try a repair tomorrow...
01 May 23	1. Upload of the April apr23.dat data file to the data archive. 2. On the DOBSON (Total Ozone Column) page, I have added a link to a .xls file which compares the same day TOC measurements of the year as made at Diekirch with those published on the Uccle RMI web site. Uccle has often missing days, and it is not sure if the published Uccle data correspond to both Zenith Sky (ZS) and Direct Sky (DS) readings, or only to DS readings, as those made by us at meteoLCD; DS readings need visible sunshine! This .xls file will be manually updated at irregular intervals. 3. There was a problem with the SUNSHINE uploads. The problem was probably not caused by the RPi, but in updating/upgrading it I managed to kill the SD card :-(( I made a new from a backup image, that as usual, needed some updates. Everything seems working fine again (>14:00 UTC). Be aware that the SUNSHINE is just that: a student project using data from a vintage instrument. So please do not expect 100% faultless working, as something can always go wrong along the line of old instrument readings, Raspberry Pi working/programming and transfer to the webserver!
02 Apr 23	Upload of the March mar23.dat data file to the data archive.
25 Mar 23	The sunshine display is now working. The screen is automatically updated every minute. I had to stop/restart the Raspberry Pi several times while working on the SD card. Stable situation now since today 15:30 UTC. Attention: the sunshine image is created every 2 minutes, so it does not represent a instantaneously situation!
24 Mar 23	The inlet filter of the Cairsens O3&NO2 sensor has been replaced today. These filters have a life-span of about 4 months, so they need regular replacements.
23 Mar 23	I built an enclosure for the "sunshine RPi" and tried to install everything today; several scripts had to be written, crontabs modified etc.... The today_01.html page has been updated and rearranged slightly to make room for the Sunshine picture, which is updated every 2 minutes. Some teething problems will certainly show up... so thx for your patience!
22 Mar 23	Samuel DIAS and Noé LINSTER are two senior students of our last year. They started in 2022 to create a sunshine logger fetching the signal of our vintage Haenni Solar sensor, converting them to a picture and storing away in a database. All this using a Raspberry Pi4 they programmed in Python. Their responsible teacher was Prof. Marco Goffinet, who teaches physics at the LCD. We made a quick test, which showed everything working. Some pictures and more text asap....
11 Mar 23	1. The update of the TRENDS section has been finished. The comparison with the Beidweiler readings remains to be done, if the EU database becomes available again. 2. The open-access website "Science of Climate Change" from Norway has published a "vintage" paper that I wrote in 2007 with the late Hans-Georg Beck and two other co-authors on the variations of atmospheric CO2 concentration with latitude (and other factors). Click here.
01 Mar 23	Upload of the February feb23.dat data file to the data archive.
10 Feb 23	233 DU... a spectacular low in TOC (total ozone concentration) for this month measured today (see here). Before spinning into panic, see the Uccle plot of last year TOC's, and notice how fast the changes often are!
03 Feb 23	Work on all our solar sensors (replacement of dessicant in UVA, UVB, CM21 and CMP11); as they had to be taken off-line for a short time, there are down-peaks in some of the plots.
01 Feb 22	1. Upload of the January jan23.dat data file to the data archive. 2. The trends analysis of the 2022 data is nearly done; there remains an analysis of the PM measurements to be done. Our TOC (total ozone column) data are again excellent, compared to those made at Uccle by vastly more expensive instruments! Many thx to Mike for helping with the daily measurements.
11 Jan 23	The 2022_only.xls file with all the readings, daily's and monthly's values at Diekirch, and also several important monthly values from the Meteolux station at Findel airport, has been uploaded into the data archive. The meteoLCDstats file also has been updated to include all stats from 1998 to 2022. Work on the TRENDS section will start asap.
01 Jan 23	1. Our old faithful Delta_T datalogger does not store the year count in its data-time column, so there usually is a mess with the Gnuplot 7-days plots during the first week (but not with the "today" plots). 2. Look here for an overplot of our 2022 Total Ozone Column measurements with those made at UCCLE by the RMI. As usual ours not too bad, no reason to be ashamed of :-))!

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