Titan image from the USA- CHANCES ARE YOU HAVE HIS SEEING

Dan Chaffee wrote:

Dan C,

Most of my measurements are now from Mt Graham taken at the VATT.
I have some data from the ridge at Mt Hopkins, Mt Bigelow and a few
hours at kitt peak. I am going to in line mode now, see me below

On Sat, 04 Dec 2004 17:03:37 -0700, Dan Mckenna
wrote:



I have been looking at this for a few years as well and have recently
come back from an observing run where I used a SCIDAR to measure the
altitude profile of the seeing while also measuring the image quality

from one second exposures.

Dan,
Can you give us the location of these measurements? I am most
curious if other regions that experience different combinations of
low level buoyancy,

Think in terms of atmospheric gravity waves. A good book is
An Intro to Atmospheric Gravity Waves
C. J Nappo

also

Small Scale Processes in Geophysical Fluid Flows
L H. Kantha & C. A. Clayson

Has good information on waves, drainage flows, and flows over
complex topography.

The nocturnal ground inversion is a place that can have intense wave
activity that can dominate the seeing.

If the area of interest is driven by a drainage flow it gets more
complicated. Drainage flows exist even for slopes less than 1 degree.


mid level inversions, and different shear profiles
would lead you to the same generalizations.

Mid level inversions are also places of gravity wave creation, if
it is associated with a jet, becomes a place where ducted waves in the
jet propagate up or down.

I see wind shear regions in my data and in some cases the wind shear
regions are due to propagating Gravity waves.






DC

On Sun, 05 Dec 2004 09:54:58 -0700, Dan Mckenna
wrote:


Think in terms of atmospheric gravity waves. A good book is
An Intro to Atmospheric Gravity Waves
C. J Nappo

also

Small Scale Processes in Geophysical Fluid Flows
L H. Kantha & C. A. Clayson
Thanks, I'll be on the lookout for them.

Dan