What a great way to portray an eclipse. I'm mesmerized by this geostationary view! I love watching the clouds dance around. Are there any places where one could view longer shots of the Earth from this perspective? Also, is there a reason that even at night, some clouds are brightly lit while others are more predictably dark? (Maybe it's just due to post-processing?)
zeecatman wrote: ↑Tue Dec 29, 2020 10:04 am
What a great way to portray an eclipse. I'm mesmerized by this geostationary view! I love watching the clouds dance around. Are there any places where one could view longer shots of the Earth from this perspective? Also, is there a reason that even at night, some clouds are brightly lit while others are more predictably dark? (Maybe it's just due to post-processing?)
Good question. I am also wondering how we can see any detail on the night side of the terminator.
-- "To B̬̻̋̚o̞̮̚̚l̘̲̀᷾d̫͓᷅ͩḷ̯᷁ͮȳ͙᷊͠ Go......Beyond The F͇̤i̙̖e̤̟l̡͓d͈̹s̙͚ We Know."{ʲₒʰₙNYᵈₑᵉₚ}
zeecatman wrote: ↑Tue Dec 29, 2020 10:04 am
What a great way to portray an eclipse. I'm mesmerized by this geostationary view! I love watching the clouds dance around. Are there any places where one could view longer shots of the Earth from this perspective? Also, is there a reason that even at night, some clouds are brightly lit while others are more predictably dark? (Maybe it's just due to post-processing?)
Good question. I am also wondering how we can see any detail on the night side of the terminator.
The imaging instrument covers bands from 450 nm to 13.6 um. It's unclear what bands were used to construct the image, but I think it's pretty clear that some of the IR bands were included.
Chris
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Chris L Peterson
Cloudbait Observatory https://www.cloudbait.com
zeecatman wrote: ↑Tue Dec 29, 2020 10:04 am
What a great way to portray an eclipse. I'm mesmerized by this geostationary view! I love watching the clouds dance around. Are there any places where one could view longer shots of the Earth from this perspective? Also, is there a reason that even at night, some clouds are brightly lit while others are more predictably dark? (Maybe it's just due to post-processing?)
Good question. I am also wondering how we can see any detail on the night side of the terminator.
The imaging instrument covers bands from 450 nm to 13.6 um. It's unclear what bands were used to construct the image, but I think it's pretty clear that some of the IR bands were included.
What exactly do GOES detect?
Geostationary weather satellites work by sensing electromagnetic radiation to indicate the presence of clouds, water vapor, and surface features. Unlike ground-based radar systems and some other types of satellites, these satellites do not send energy waves into the atmosphere and analyze returning signals. Rather, GOES work by passively sensing energy. GOES sense visible (reflected sunlight) and infrared (for example, heat energy), from Earth’s surface, clouds, and atmosphere. Earth and the atmosphere emit infrared energy 24 hours a day, and satellites can sense this energy continuously. In contrast, visible imagery is available only during daylight hours when sunlight is reflected.
How do GOES detect this energy?
The instruments on GOES that measure electromagnetic energy are called radiometers. GOES carry two types of imagers: One measures the amount of visible light from the sun that Earth’s surface or clouds reflect back into space. The second measures the infrared energy that Earth’s surface and clouds radiate back to space. Because GOES can sense infrared radiation, they can operate at night.
-- "To B̬̻̋̚o̞̮̚̚l̘̲̀᷾d̫͓᷅ͩḷ̯᷁ͮȳ͙᷊͠ Go......Beyond The F͇̤i̙̖e̤̟l̡͓d͈̹s̙͚ We Know."{ʲₒʰₙNYᵈₑᵉₚ}
Chris Peterson wrote: ↑Tue Dec 29, 2020 5:31 pm
The imaging instrument covers bands from 450 nm to 13.6 um. It's unclear what bands were used to construct the image, but I think it's pretty clear that some of the IR bands were included.
Props to both of you for getting to the bottom of it! Then, I assume the video combines visible and infrared false-colored light, which gives the dark side of the Earth that strange partially-lit look?
Earth During a Total Solar Eclipse
- and change the playback speed to .25. All YouTube videos allow that, as well as speeding them up by up to a factor of 2.
