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Hello Veikko,
I observed aurora near Hamburg, Germany and indeed saw a NLC between the
auroral display. I still have to work over my observations, pictures and
video but will keep an extra eye for this NLC.
>From my memory it showed up around 0.30 UTC at approx azimuth 20.
It disappeared at about 1.30 UTC when dawn became too bright.
(I still have to check this data !!).
At the place of the NLC there was also some auroral substorm activity.
I'll
attach a picture. The bright spot just above the end of the wood is the
NLC,
but on this picture it looks more like another auroral arc.
I know for sure that it was an NLC, because I've done a lot of study to
distinguish them from aurora -which is my first observational goal.
Especially in this time of year NLC's can look a lot like Aurora from here
(The Netherlands).
If you like to know more, feel free to mail me.
Greetings,
Max Kok
-----Oorspronkelijk bericht-----
Van: Veikko Makela <Veikko.Makela_at_HELSINKI.FI>
Aan: METEOPTIC_at_LISTSERV.FUNET.FI <METEOPTIC_at_LISTSERV.FUNET.FI>
Datum: dinsdag 18 juli 2000 10:05
Onderwerp: NLC and aurorae
>Hi, all!
>
>I'll try to break the silence in this list. Recently there haven't been
>much discussion online. So it looks like only the trash mail is coming
>through.
>
>Back to businees. Is there any idea, which kind of summer this is with
>noctilucent clouds. In Finland I have heard about few reports,
>unfortunately the weathers have not been the best ones. It seems that
>NLC summer 2000 is perhaps a normal one. In Tom McEvan's NLC page
>(http://www.personal.u-net.com/~kersland/nlc/nlchome.htm) there are
>quite many reports available.
>
>In last weekend during night 15/16 July there was a big aurora storm
>and also in Southern Finalnd some auroras have seen. I am now not
>interested in these, but also weak NLC display have seen in the same
>night, a little earlier. If there have been NLCs also elsewhere, have
>anybody observations of they behavior, when aurorae appeared. There is
>a unsure observation that NLCs disappeared.
>
>regards,
>Veikko Makela
>
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