ATSC 353

17 Pins

two people standing on the side of a road next to a parking lot with cars and buildings in the background

This photo was taken on 4/28 and shows Kelvin–Helmholtz waves. these occur when there is significant mechanical turbulence in the flow which will cause eddies. We are able to see the eddies because there is enough forced convection to allow a cloud to form with the upward moving air

the sun is shining brightly over some trees

Is it a bird? is it a plane? No its an Isentropic emitter! This isentropic emitter supplies visible radiation to our planet which then gets scattered or absorbed to give color to the world. its angle above the earth is also a big player in the energy budget of the earth which this time of year it is at about a 57 degree angle above the surface at solar noon

a jar of peanut butter sitting on top of a table next to a persons leg

This is my best attempt at clouds in a glass of beer experiment. When you open a glass bottle of beer you often times can see a small cloud form. This is due to homogenous nucleation which occurs when water vapor in air reaches super saturation level where a cloud droplet can form.

the sun is setting over some buildings and trees with no leaves on them in front of a cloudy sky

This is a good example of dark/black clouds. The cloud appears dark/black because of the multiple scattering of the sun light which is setting to the west and this picture was taken east of the clouds. most of the light is scattered back out of the cloud making it appear dark to a viewer to the east.

the reflection of someone's hand on their cell phone while sitting in a car

This photo was taken in January and is a good example of depositional growth of ice crystals in my car. My car was likely warmed due to running it the night before and my breath added water vapor to the air. After a becoming very cold, the water vapor condensed on an dust or dirt particle and grew due to deposition.

the view from inside a ski lift looking down on snow covered mountains

This Photo was taken last year on my spring break ski trip to whistler Canada. We were riding the gondola when it went through low clouds and could not see anything around us. When light hits clouds it is scatted primarily forward due to mie scattering but due to multiple scattering, light is often scattered back out of the cloud.

a person standing on top of a snow covered ski slope

There is noting better then a blue bird day of skiing in Montana. the word simply means no clouds and blue skies. the ski gets its blue color because the gasses in the atmosphere simply scatters blue light and absorbs other colors such as red and green. This type of scattering is from Rayleigh scatter which equally scatters light both forward and backwards

the snow is white and fluffy on top of the ice flakes in front of a metal pole

Freezing Rain

Big Sky

A Chair

This Photo was taken on a chair lift in Big Sky MT. The night before we had rain that changed to gradual then to snow. you can see a lot of small ice pellets and some dendrites that appear to have a thin layer of ice on them

snow is piled up on the sidewalk in front of an apartment building with trees and grass

This is an example of specular reflection of a mountain of snirt next to a calm puddle. Specular reflection occurs when you have a smooth reflective surface. the result is due to a change in direction of light waves

two people are skiing down a snow covered path in the woods on a cloudy day

Typically on a clear day you can see the valley but since there are low clouds overhead you can only see to the bottom of the mountain even though there is likely not fog in the valley. this is because of the contrast between the valley floor and the clouds. this is also why the sliver of blue sky stands out so well in this photo because the blue light scattered by the atmosphere stands out very well against the grey clouds

Related searches

This photo was taken on 3/4/18 near my apartment. What we are looking at is the common March phenomena called snirt. It only happens when dirt and dust mix with snow to give you this wonderfully ugly pile snirt. snirt tends to melt faster then normal white snow due to its gray to black color. snirt will absorb more of the visible spectrum of light then white snow would. there fore it is easier to melt on a warm sunny day.

a black and white photo of someone's shadow in the snow

Snowflake Crystal Experiment

You can see dendrites in the snow from a recent snow fall. They form in region of -12 to -18 in a cold cloud. dendrites form due to Ice nuclei that allows heterogeneous freezing of super cooled liquid water. once ice crystal's forms, it tends to grow very easily due to the saturation vapor pressure over ice is smaller then over water.

two street lights shine brightly in the dark

The Ice

A Couple

A couple of Ice crystals started forming on my windshield of my car. A dust or dirt particle acted as activator to create the ice crystal and grew at the expense of any super cooled water vapor in around it. Which at the time was not much since these two ice particles are very small.

the sun is setting over some buildings and trees

Great late fall sunset from the 4th floor of U-place looking west towards odgard hall. Sunlight is having to travel through a lot more of the atmosphere at sunset then during mid day giving less light but beautiful colors that were being reflected off the clouds

an aerial view of snow covered mountains and clouds in the foreground with blue sky

White Fish

This Photo is from my ski trip to White Fish Montana back in Jan 2017. A strong inversion had set up over the valley which kept the clouds from continuing to rise up and over the mountain. Much of the day the inversion level was near the base of the mountain so as I skied towards the bottom I would see the clouds dissipate into very fine ice crystals that were scattering the sun light making it look like there was glitter in the air