Date: Sun, 6 Aug 2000 17:03:14 +0100 (BST)
From: John Rogers <jr@mole.bio.cam.ac.uk>
Subject: White ovals (addendum)

Hi all,

Another interaction of anticyclonic white ovals may be imminent, this time
on the NEBn.  Damian sent the enclosed compilation of images and said: 
"The long lived NTrZ white spot Z seems to be possibly interacting
with another NTrZ oval. It's difficult to see exactly what's happening,
but
two white condensations seem to have approached each other? The two ovals
are also well seen in Iga's cylindrical projection map created from
Ikemura/Maeda images."
White spot Z is a white oval that has existed since 1997 and has always
had a faster drift than the other NEBn features. (In 1999/2000 it moved at
DL2 = -6 deg/mth, DL3 = +2 deg/mth.  It is now at L2 = 226, L3 = 165.)
Iteliminates other spots preceding it, and new spots are created following
it.  Damian points out that it is now gradually approaching another white
oval in the same latitude, as shown on the attached images, so they could
start interacting in the next month or two.

John Rogers.