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Jan 24. Odegard. Big flakes. Once again, the particles were most likely dendrites that are likely to grow at cloud temperatures of -20C to -10C. As they fall and get closer to the surface, the temperature rises and, on this day, was close to freezing. The near freezing temperature allowed for slight melting and sticking to form aggregates.

Jan 24. Odegard. Big flakes. Once again, the particles were most likely dendrites that are likely to grow at cloud temperatures of -20C to -10C. As they fall and get closer to the surface, the temperature rises and, on this day, was close to freezing. The near freezing temperature allowed for slight melting and sticking to form aggregates.

March 13. Waves in the upper atmosphere. A good way to tie this picture into topics discussed in class would be to point out that the turbulence caused with the waves also causes entrainment. Entrainment is the mixing of the atmospheric air with parcel air associated with the cloud. This mixing decreases the water vapor mixing ratio and can deplete the water vapor necessary for cloud droplets to form.

March 13. Waves in the upper atmosphere. A good way to tie this picture into topics discussed in class would be to point out that the turbulence caused with the waves also causes entrainment. Entrainment is the mixing of the atmospheric air with parcel air associated with the cloud. This mixing decreases the water vapor mixing ratio and can deplete the water vapor necessary for cloud droplets to form.

Feb 24. The sky appears white today because of equal scattering throughout the visible spectrum

Feb 24. The sky appears white today because of equal scattering throughout the visible spectrum

April 3. Aggregates with the temperatures right around freezing. The freezing point is good for aggregate formation since it allows for partial melting and sticking. Also, with temperatures slightly colder at cloud level, temperatures favor dendites. This temperature range is -20C to -10C, also known as the dendritic growth zone.

April 3. Aggregates with the temperatures right around freezing. The freezing point is good for aggregate formation since it allows for partial melting and sticking. Also, with temperatures slightly colder at cloud level, temperatures favor dendites. This temperature range is -20C to -10C, also known as the dendritic growth zone.

March 20. Clear skies with clouds only over the mountains in Nevada. At the start of section 2, we discussed ways that clouds form. Orographic lift was one way we discussed that clouds can form. In this picture, clouds are only over the mountain, so convective temperature probably was not met. These clouds were most likely formed simply by the wind sloping uphill, bringing water vapor along with it.

March 20. Clear skies with clouds only over the mountains in Nevada. At the start of section 2, we discussed ways that clouds form. Orographic lift was one way we discussed that clouds can form. In this picture, clouds are only over the mountain, so convective temperature probably was not met. These clouds were most likely formed simply by the wind sloping uphill, bringing water vapor along with it.

Jan 26. Beta. Obscured sun due to ground blizzard. On highway 2, visibility was cut down to less than 10ft during gusts. Since snowflakes are much larger than typical atmospheric particles, it doesn't take much to obscure visibility. Although light scattering does occur, the snowflakes also absorb radiation which is just as useful in decreasing visibility.

Jan 26. Beta. Obscured sun due to ground blizzard. On highway 2, visibility was cut down to less than 10ft during gusts. Since snowflakes are much larger than typical atmospheric particles, it doesn't take much to obscure visibility. Although light scattering does occur, the snowflakes also absorb radiation which is just as useful in decreasing visibility.

March 16. Low contrast on the mountains outside of Las Vegas. This picture is a good demonstration of the connection between atmospheric scattering and contrast. Since there are particles in the air (especially in Vegas), light is scattered, decreasing the intensity seen by our eyes. The further you try to see, the closer the intensity goes to zero because the further distance includes more particles/more scattering.

March 16. Low contrast on the mountains outside of Las Vegas. This picture is a good demonstration of the connection between atmospheric scattering and contrast. Since there are particles in the air (especially in Vegas), light is scattered, decreasing the intensity seen by our eyes. The further you try to see, the closer the intensity goes to zero because the further distance includes more particles/more scattering.

Stratocumulus. Stratocumulus cover large areas of our planet and can impact our climate. They have high albedo, so they reflect a lot of sunlight. The clouds also absorb and re-emit longwave earth radiation.

Stratocumulus. Stratocumulus cover large areas of our planet and can impact our climate. They have high albedo, so they reflect a lot of sunlight. The clouds also absorb and re-emit longwave earth radiation.

Feb 11. Odegard. It doesn't look like it, but the sunlight intensity was fairly low this morning. High absorption/scattering clouds?

Feb 11. Odegard. It doesn't look like it, but the sunlight intensity was fairly low this morning. High absorption/scattering clouds?

Feb 5. Clifford. High clouds cause a halo.

Feb 5. Clifford. High clouds cause a halo.

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