Altostratus clouds in stable atmosphere on October 19, 2025 at 12:30PM. These clouds presumably have orthographic effects, as there was westerly winds blowing over the mountain that day. This video is on 128x speed, the first clip originally being 20 mins long and the second clip being 15 mins long.
Altostratus with Orthographic Effects
Categories
Flow Vis Guidebook
- Introduction to the Guidebook
- Overview 1: Phenomena. Why Does It Look Like That?
- Overview 2: Visualization Techniques
- Overview 3: Lighting
- Overview 4 - Photography A: Composition and Studio Workflow
- Overview 4 - Photography B: Cameras
- Overview 4 - Photography C: Lenses - Focal Length
- Overview 4 - Photography C: Lenses - Aperture and DOF
- Overview 4: Photography D: Exposure
- Overview 4 - Photography E - Resolution
- Overview 5 - Post-Processing
- Clouds 1: Names
- Clouds 2: Why Are There Clouds? Lift Mechanism 1: Instability
- Clouds 3: Skew - T and Instability
- Clouds 4: Clouds in Unstable Atmosphere
- Clouds 5: Lift Mechanism 2 - Orographics
- Clouds 6: Lift Mechanism 3 - Weather Systems
- Boundary Techniques - Introduction
- Dye Techniques 1 - Do Not Disturb
- Dye Techniques 2 - High Visibility
- Dye Techniques 3 - Light Emitting Fluids
- Refractive Index Techniques 1: Liquid Surfaces
- Refractive Index Techniques 2: Shadowgraphy and Schlieren
- Particles 1- Physics: Flow and Light
- Particles 2: Aerosols
- Particles 3: In Water
- Particles 4 -Dilute Particle Techniques
- Art and Science
- TOC and Zotpress test
- Photons, Wavelength and Color
2 Comments. Leave new
I like how you captured the sun behind the altostratus clouds. The clouds helped to disperse the sunlight and prevent your video from being over-exposed, improving the color of the ground and nearby mountains.
I love the choice of a timelapse, it makes it really easy to see how the cloud develops and dissipates but stays in the same location, it seems like some standing orographic clouds.