Not an arcus, but what looks to be a series of Stratocumulus volutus. Nice find nonetheless!
Arcus is a supplementary feature attached to a strong convective cloud (Cumulonimbus or possibly a strong Cumulus). This isn’t the case here.
I post pictures with my other account @Deme@lemmy.world
Not an arcus, but what looks to be a series of Stratocumulus volutus. Nice find nonetheless!
Arcus is a supplementary feature attached to a strong convective cloud (Cumulonimbus or possibly a strong Cumulus). This isn’t the case here.
A per capita map would also be nice.
Well, those are in higher orbits where there’s a lot more space. LEO is the biggest problem because it’s got the majority of all satellites and debris and it’s relatively small. GEO is also pretty crowded, but almost all the satellites there are flying in neat synchronization, because, well, Geostationary orbits.
Edit:
Maximum debris concentrations can be noted at altitudes of 800-1000 km, and near 1400 km. Spatial densities in GEO and near the orbits of navigation satellite constellations are smaller by two to three orders of magnitude.
Plenty of current and future Earth observation satellites are at risk as well.
Cruise missiles are usually shot down with interceptor missiles, which are a lot more expensive.
Close, but this is in fact the circumhorizontal arc. It’s very similar to the cza, but the refractions happen in the opposite order. The cha occurs below the sun when the sun is high, the cza occurs high above the sun (near the zenith) when the sun is low.
Nice pictures!
Spectacular crepuscular rays!
I did write “mostly” for a reason. Aluminium is used a lot in aerospace due to its low mass. There is a lot of matter falling from space naturally, but the composition is key to the effects that will have on the atmosphere. Satellites, spent stages etc. have different compositions to meteors.
Over 20 elements from reentry were detected and were present in ratios consistent with alloys used in spacecraft. The mass of lithium, aluminum, copper, and lead from the reentry of spacecraft was found to exceed the cosmic dust influx of those metals. About 10% of stratospheric sulfuric acid particles larger than 120 nm in diameter contain aluminum and other elements from spacecraft reentry. Planned increases in the number of low earth orbit satellites within the next few decades could cause up to half of stratospheric sulfuric acid particles to contain metals from reentry.
https://phys.org/news/2024-06-satellite-megaconstellations-jeopardize-recovery-ozone.html
When old satellites fall into Earth’s atmosphere and burn up, they leave behind tiny particles of aluminum oxide, which eat away at Earth’s protective ozone layer. A new study finds that these oxides have increased 8-fold between 2016 and 2022 and will continue to accumulate as the number of low-Earth-orbit satellites skyrockets.
Those micrometeors aren’t mostly aluminium.
The plant works just as intended and has already captured a lot of that sweet sweet greentech R&D money and subsidies.
CTRL F “Peer review” No matches.
Don’t get me wrong, it’s definitely interesting that this thing keeps making headlines after all these years, but if the drive is capable of the kinds of thrust they say it’s getting, why haven’t they been able to prove it beyond a shadow of a doubt? Every space agency and their dog would already be sending prototypes into orbit if they didn’t think that this was a scam.
Yeah, not exactly news.
I suppose it’s a good yearly reminder.
Beautiful! Cirris spissatus always makes for some great sunsets and sunrises. Here you also have some Cirrus fibratus.
Sure. If any are left alive after the IDF demolishes Gaza to the ground.
I admire the optimism of everyone who didn’t expect this outcome
This is the 22° halo. A Corona is an entirely different phenomenon caused by diffraction and interference of light around tiny water or ice particles, or other such particles of similar size. Here’s another great resource about coronae (and pretty much every other atmospheric optical phenomenon out there).
You’re correct about halo phenomena being caused by ice crystals. As such, they are most often observed when there’s Cirrostratus in the sky, and that in turn is often the result of an incoming warm front. The Cirrostratus may start to thicken into Altostratus and Nimbostratus, so overcast and rainy would be the safest bet.
Yeah the number if immigrants is very little even by our standards, but our right wing government is doing all it can to stoke fears of a Russian hybrid operation, just so that they get an excuse to shut down the border. Ironically, that’s exactly what Russia wants them to do because such disregard for human rights naturally inflames internal political tensions here.
There would be significantly less drama if we just took them in with due processing, but now that the racist nationalists party is in government with a spineless sack of shit as the PM, they’re not going to do that.
You are reading about it, so it is at least spreading awareness (not of the problems we all already know exist, but of the fact that there are still people willing to put their necks on the line fighting for a better future).
Yeah, the best case scenario assuming that the world got its act together tomorrow…