"Landy" wrote
...

wrote

I'm just asking the question whether deserts can have some
drying effect by way of being a dessicant or some other non-rain
moisture loss. jack

Jack,
No - I'm just saying that because the high-humidity air that blew in from
the sea mixed with very low-humidity air in the desert, the resulting
humidity of the mixed air that blows back out will be lower. It's a
matter of mixing ratios. I guess the absolute moisture loss (of the air
that blows back) has been to the desert air - it doesn't have to have
precipitated. I think if you did humidty measurements inland in the
deserts on evenings following the sea breezes versus days without, you
would see the difference. I hope this makes sense.

"At high altitudes, the difference between between high pressures from warm
tropical air and low pressures from cold polar air try to force air from the
tropics toward the poles, but the Earth's rotation diverts this flow to the
east, resulting in the high velocity west-to-east jet stream flows at
mid-latitudes." It is from:
http://aes.gsfc.nasa.gov/vis/a000000/a003200/a003203/

Jack lives on the western edge of Australia. So the water which migrate very
high above the desert flows to the east and we have "absolute moisture
loss".
But what things are on the eastern edge of Australia?
S*