ISS040-E-87351
NASA Photo ID | ISS040-E-87351 |
Focal Length | 85mm |
Date taken | 2014.08.01 |
Time taken | 20:49:28 GMT |
Resolutions offered for this image:
1000 x 665 pixels 540 x 359 pixels 2128 x 1416 pixels 720 x 480 pixels 4256 x 2832 pixels 640 x 426 pixels
1000 x 665 pixels 540 x 359 pixels 2128 x 1416 pixels 720 x 480 pixels 4256 x 2832 pixels 640 x 426 pixels
Cloud masks available for this image:
Country or Geographic Name: | UKRAINE |
Features: | PAN-POLAR MESOSPHERIC CLOUDS, SUNSET |
Features Found Using Machine Learning: | PAN- |
Cloud Cover Percentage: | 0 (no clouds present) |
Sun Elevation Angle: | -21° |
Sun Azimuth: | 356° |
Camera: | Nikon D3S Electronic Still Camera |
Focal Length: | 85mm |
Camera Tilt: | High Oblique |
Format: | 4256E: 4256 x 2832 pixel CMOS sensor, 36.0mm x 23.9mm, total pixels: 12.87 million, Nikon FX format |
Film Exposure: | |
Additional Information | |
Width | Height | Annotated | Cropped | Purpose | Links |
---|---|---|---|---|---|
1000 pixels | 665 pixels | No | No | Earth From Space collection | Download Image |
540 pixels | 359 pixels | Yes | No | Earth From Space collection | Download Image |
2128 pixels | 1416 pixels | No | No | NASA's Earth Observatory web site | Download Image |
720 pixels | 480 pixels | Yes | No | NASA's Earth Observatory web site | Download Image |
4256 pixels | 2832 pixels | No | No | Download Image | |
640 pixels | 426 pixels | No | No | Download Image |
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Image Caption: Polar Mesospheric Clouds ("PMC"), Russia
This image of mesospheric clouds was taken by astronauts when the International Space Station was flying over the Volga River in Russia. Whispy and hard to see, PMC form far above the usual level for clouds, 80-100 km above the ground, so that crews flying at ~350 km are ideally placed to observe them. PMC usually only appear near the poles, but during the past few decades they have appeared as far south as Colorado and Virginia in the USA. They also appear brighter and thicker. Scientists think that these changes are related to long-term climate change, perhaps from increasing water vapor content in the upper atmosphere.
This sunset shot shows the PMC as a thin bright line -- far above the lowest, yellow-brown weather layer of the atmosphere (known as the troposphere).
This image of mesospheric clouds was taken by astronauts when the International Space Station was flying over the Volga River in Russia. Whispy and hard to see, PMC form far above the usual level for clouds, 80-100 km above the ground, so that crews flying at ~350 km are ideally placed to observe them. PMC usually only appear near the poles, but during the past few decades they have appeared as far south as Colorado and Virginia in the USA. They also appear brighter and thicker. Scientists think that these changes are related to long-term climate change, perhaps from increasing water vapor content in the upper atmosphere.
This sunset shot shows the PMC as a thin bright line -- far above the lowest, yellow-brown weather layer of the atmosphere (known as the troposphere).