On our site for the past 9 years, the database of observations of silver clouds has been maintained. The database contains information on observations of silvery clouds since 1963.
Since 2007, observations of silver clouds have been conducted by the AIM spacecraft, which undoubtedly gives global coverage of the dynamics of the field of silver clouds.
However, due to the observation technique and the sensitivity of the equipment installed on the AIM satellite, the real edge of the global field of silver clouds does not always coincide with the satellite observation data. This is especially true of observations of silvery clouds at the latitudes of Simferopol and Astrakhan.
Appropriate processing and visualization of data on the altitude, azimuth and time of observation of silver clouds allows us to calculate the projection of the illuminated edge of the cloud field of silver clouds.
Based on the information on the measured angular height and azimuth of the silver clouds recorded in the database of the Meteoweb.ru project, the calculated line of projection of the edge of the cloud field of the silver clouds is displayed on the map based on their standard height of 82 km.
Google Translate makes a reasonable job of converting the Russian to English however it appears that while Google Translate (GT) allows you to select an observation date it gets confused with the 'button' that allows you to show the results on the selected date. When you attempt to click on the 'show' button GT shows the translation of the button text and allows the user to contribute a better translation but does not actually send the button operation to the server so the information for the user selected date does not show. Has anyone found a way round this perhaps by using another translation service ?
Attached is a screenshot of what happens when you attempt to click on the 'Показать' - Show button after Google Translate has translated the page to pseudo English. It works ok in the Russian version. I am using Firefox under Linux. It looks as though Google translate gives priority to asking for a 'better translation' rather than opening the page.
The translated page works ok in the 'Chromium Web Browser' in Linux even when it has been translated to English.
Interesting! A few of us in Alberta Canada have been wanting to get a better sense of AIM data vs actual observation, because many times it does not seem to correlate well. We realize that it takes a full day for AIM to "paint" the daisy, and that the true NLC field changes on a shorter time scale. I hope to get access to AIM data and reprocess it to make comparisons with visual/images more evident. Regards, Alister. P.S. 20200620 09 UT the NLC went to our southern horizon past Jupiter (we are at 53.5N)!
Alister, thanks! What prevents you from entering your observations (even the most extreme ones, in terms of unusual southern declination) into our database meteoweb.ru/astro/nlc/report.php and get the calculation of the projection of the edge of the cloud field.
I would be pleased to see that not only observers who understand the Russian language work with the base and map.