On Apr 24, 5:37 pm, "Brenda Ann" wrote:

How Global Warming Will Affect Short-wave Radio

1: Atmosphere heats

2: Warmer atmosphere expands

3: Upwards

4: Reflective layers in Ionosphere are pushed upwards by expanding
atmosphere

5: Higher reflective layers mean " Skip Long" for SW radio Stations..

Comments..?

If indeed the ionized layers are pushed up, it would potentially mean no
more skip for MW signals, and would likely lower the MUF for skip, resulting
in some frequencies currently usable during the day moving to nighttime use,
while current daytime frequencies could die altogether.-

Reasonable implications, assuming that the differences in isobaric
heights as a result of global warming are significant...like on the
order of tens of miles...however...

Global warming may have some deleterious effects, but it is doubtful
that propagation variance is among them. I think the height
variations, based on temp differences of a few degrees Kelvin (which
is only about a one percent temp difference in absolute terms) at the
earth's surface, are going to be minimal, on the order of a couple of
miles altitude at most. This is within normal ranges of seasonal and
even day-to-day variation anyway. You might see some anomalies if you
were to keep careful statistical track, but overall I don't think this
ought to be a big concern.

Bruce Jensen