Greetings NFC,
I received a comment suggesting that it might be useful for the listserv to
review how one knows when NEXRAD reflectivity is birds, insects, and when it is
other phenomena.
I think a lot of this comes with field experience over time -- associating
nocturnal observations of birds (via acoustic, radar, thermal, moonwatching
methods, etc.) with certain types of reflectivity portrayed by NEXRAD. But a
good tutorial with some basic examples is found at the Clemson Radar
Ornithology Lab's website http://virtual.clemson.edu/groups/birdrad/ This was
the first such NEXRAD ornithology website and there may now be other didactic
web resources to assist in investigating biotargets on NEXRAD.
I'm not as adept at others on this list at understanding NEXRAD and, to be
accurate, my earlier post should refer to biotarget activity and not assume
targets are birds -- the latter determination of the source of reflectivity is
thought to be possible by analyzing speed of targets in relation to wind speed
and direction (discussed within the Clemson radar page). For me, in this case,
my particular interest involves the isolation of the Montana event (&
previously noted NE event) and the fact that I don't recall seeing such
isolated NEXRAD blooms in the eastern US.
Bill E
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