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Originally Posted by Yahillwe
(Post 19011100)
Wait a second, there is a cloud meet up and I wasn't informed? :mad: :mad: :mad:.
Just because I packed 3 bags I am banned????? Promise will do only one, if I am allowed to attend. Promise.:p The DO is still in planning stages so you haven't missed anything yet...and of course we do :-:expect:-: your attendance :) Details so far are here: http://www.flyertalk.com/forum/19005611-post228.html So, that makes the list so far: Definitely attending: BotB henkybaby Stez Yahillwe Possible (or Yeah, but No, but Yeah, but No): PETER01 PanGalactic (after some arm twisting and assurances to his SWMBO) :) Others? |
Originally Posted by henkybaby
(Post 19011130)
Well, there is that and there is seeing the storm front from a safe distance away. There must be some middle ground where you can feel the force of mother nature without being launched into space.
I'm all up for getting wet and being in the middle of some big storms which will be interesting enough...just need to be careful about distances with Tornadoes. We won't have the same kit a true storm watching crowd will have...such as radar and live feeds to weather info so can't quite get as close as they would due to danger involved...but we can get close enough that it will be EXCITING...that much I can guarantee ^ After all this is meant to be a 'bucket list' item and/or the FT equivalent to a 'mid life crisis' points/miles extravaganza with some fun and excitement. ^ Hope that balance sounds right? |
Originally Posted by Stez
(Post 19008724)
And from somewhere in rural Queensland, not too far from Mackay:
https://lh3.googleusercontent.com/-Y...3/IMAG0806.jpg Some textbook Cumulus in this photo with the uniform, flat dark grey bases and strong white cauliflower type tops. ^ The interesting thing in this photo is the shear that is developing in the vertical atmosphere...the lower heights (surface up to say 4000 feet AGL) is unstable but no strong wind shear...(as the Cumulus is developing fine and the tops are not being sheared)...but the Altocumulus higher up is being sheared quite a bit by proportionally much stronger horizontal winds and will develop into Lenticular clouds if the strong wind at height continues... So would be quite bumpy around 7000 - 12,000 foot AGL in this picture... A good Summer cloud pic. ^ EDIT: Oops...I mean Winter picture (damn hemispheres messing with my mind... :) ) |
Good/Bad time of year for us. We'll be in VA, watching it on the News channels and hoping it doesn't get too far up our way!!
…. like it did in September last year. |
http://www.flyertalk.com/forum/membe...-redarrows.jpg
I picked the prefect time to nip out in to the garden for a cigarette! Guess who just flew right over my back garden!!!! :D But, damn this slow camera on the iphone :mad: |
The Brown Archers? ;)
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Originally Posted by T8191
(Post 19013775)
The Brown Archers? ;)
What a treat!!! Can't believe that just happened! :D :D :D |
Originally Posted by BotB
(Post 19011326)
You can even bring 2 bags Yahillwe :)
The DO is still in planning stages so you haven't missed anything yet...and of course we do :-:expect:-: your attendance :) Details so far are here: http://www.flyertalk.com/forum/19005611-post228.html So, that makes the list so far: Definitely attending: BotB henkybaby Stez Yahillwe Possible (or Yeah, but No, but Yeah, but No): PETER01 PanGalactic (after some arm twisting and assurances to his SWMBO) :) Others? |
Ok here are some, of course I am not a good photographer. Wonder what I am good at?
http://www.flyertalk.com/forum/membe...nt-3-aspx.jpeg http://www.flyertalk.com/forum/membe...nt-4-aspx.jpeg http://www.flyertalk.com/forum/membe...nt-5-aspx.jpeg |
Originally Posted by Yahillwe
(Post 19017284)
Oklahoma????? You didn't tell me that it is in Oklahoma...
Google it if you dare :p |
I don't need to google anything done by jackass, it is always idiotic and crazy. Can just imagine the worse. :D
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BotB
his is a great visualisation of why we have stack distances and times on airports...especially with the new A380 I believe the stack time is longer afterwards to ensure that no planes gets caught in one from the previously landed A380 or other aircraft... The main problem as I understand it is that we do not have a good way to know if the wake turbulence (as it is also known as) will dissipate quickly or if it will 'move' vertically so as not to be a problem...the worry being that the turbulence continues, more or less, in the same path the following plane is taking due to the turbulence being trapped in a 'layer' from temperature variations such as you get with sonar or radar sometimes...maybe someone else better informed can comment further or correct my points here like Heathrow Tower? Vortex separation can be applied in two ways. Currently, for arriving aircraft in the UK it is applied in terms of distance. Therefore, when landing at LHR in, say, a 747, if there was another Heavy (B747, B777, B767, A340, A330) behind, it would be 4nm behind; if there was a Medium (A319/320/321, B737, E190) then it would be 5nm; a Small (E145, F70) then 6nm and so on. This actually works against us when there are strong winds. If the aircraft are fixed distances apart, and there are strong headwinds, then the each aircraft is coming down the approach more slowly, and therefore the number of aircraft landing per hour goes down. To visualise it, think of those stretches of motorway where you have to be '2 chevrons' apart. Imagine doing 70mph. Now imagine you have slowed down to 30mph, but still have to remain 2 chevrons apart....the number of vehicles passing a certain point on the road will be lower at 30mph than at 70mph. We are working on a concept of separation arrivals by time, rather than distance, so that the landing rate remains constant in headwinds. On departure, we provide separation by time, so if the following aircraft is a lesser category (i.e. Heavy followed by Medium/Small/Light) then we provide 2 minutes. If the first aircraft is an A380 we add one minute on, so Super followed by Heavy will be 2 mins, Super followed by Medium is 3 mins. This time is increased by using different take off points for the two aircraft. |
And finally.....
Condensation effects due to high g manoeuvres. F-16 and F-22 in Ohio. http://i20.photobucket.com/albums/b2...743536x800.jpg http://i20.photobucket.com/albums/b2...774594x800.jpg Dirt devils in rural Washington State. http://i20.photobucket.com/albums/b2...308531x800.jpg http://i20.photobucket.com/albums/b2...304531x800.jpg |
Wheee ... Real aircraft, and great photos!
"Jet noise ... The sound of Freedom" :D :D I will always remember when we moved to Waddington, and walked into the garden. The OH sniffed the air and said "Ahhh, Avtur." :D |
BA 93 using call sign Speedbird 9L taxiing in front of the tower at CYYZ.
https://lh4.googleusercontent.com/-Q...728_145740.jpg |
Originally Posted by Heathrow Tower
(Post 19018371)
A few more photos, I crave your indulgence!
I apologise for these, not many clouds, but I love the photos! <snip> Eurofighter Typhoon http://i20.photobucket.com/albums/b2...322800x533.jpg As to the photos...simply brilliant ^ (you can indulge yourself anytime you like as far as I am concerned! :) ) regarding your comment about not many clouds...actually, in many of them, I find the contrast of the grey and shades of the background clouds add to the picture quite well, which you wouldn't get quite the same effect if it was just clear blue sky...but I would say that wouldn't I :D I have always wondered if, when fighter aircraft do such manoeuvres, if they not only create condensation but maybe also cause deposition? (change in state from gas to solid without going through liquid first (see this wiki link if you want to find out more about deposition or sublimation: http://en.wikipedia.org/wiki/Deposit...se_transition) I am guessing that the very short time frame that the fighter is doing such manoeuvres, the usual condensation is occurring but no deposition or if it is, that it cannot be maintained and the period is so short we don't see it... I also imagine that there is a very thin boundary layer just above the wing surface which is clear air and does not condense, in all such situations, thereby protecting the wing from any icing it may incur from such drastic condensation or deposition that may form... Excellent pics ^ thanks again, appreciate you answering the question too! |
Originally Posted by evanderm
(Post 19018724)
BA 93 using call sign Speedbird 9L taxiing in front of the tower at CYYZ.
https://lh4.googleusercontent.com/-Q...728_145740.jpg Looks like some nice TCU (towering Cumulus) building over the airport in Toronto...without looking I can imagine that they developed some rain showers and even thunderstorms later on? Again, thanks for sharing ^ |
There are already few Upgradios opportunities in April to DEN. Currently 17/18 out and 30 back would work for me. I could add a TP run or visit some friends in CA. If we are really doing this we should set the dates though... Much harder to make this a last minute thing.
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Some very low clouds here today. In fact I've been in the same house for 17 years or so and never saw them as low as this although we are a little bit above sea level. I felt as if they were about to descend even lower :eek:
1st one from the front of the house and the 2nd at the rear. It was a very strange day here. LOADS of scattered showers/bright sunshine/cool wind/warmer winds !! Four seasons a day up here sometimes!! :D https://lh6.googleusercontent.com/-a...0548.JPG?gl=GB https://lh4.googleusercontent.com/-R...0550.JPG?gl=GB |
Originally Posted by BotB
(Post 19021211)
Thanks for contributing to the thread evanderm ^ , glad to have you with us! :)
Looks like some nice TCU (towering Cumulus) building over the airport in Toronto...without looking I can imagine that they developed some rain showers and even thunderstorms later on? Again, thanks for sharing ^ |
http://farm9.staticflickr.com/8142/7...0e9f668f_c.jpg
Some beautiful clouds over the Stockholm Archipelago... Didn't last at all long though ^ |
Originally Posted by PETER01
(Post 19024098)
Some very low clouds here today. In fact I've been in the same house for 17 years or so and never saw them as low as this although we are a little bit above sea level. I felt as if they were about to descend even lower :eek:
1st one from the front of the house and the 2nd at the rear. It was a very strange day here. LOADS of scattered showers/bright sunshine/cool wind/warmer winds !! Four seasons a day up here sometimes!! :D https://lh6.googleusercontent.com/-a...0548.JPG?gl=GB https://lh4.googleusercontent.com/-R...0550.JPG?gl=GB
Originally Posted by evanderm
(Post 19024118)
Surprisingly, no rain at all. An hour after this photo was taken, the clouds had moved on and there was blue sky for miles around.
Originally Posted by Flyersj18
(Post 19029445)
http://farm9.staticflickr.com/8142/7...0e9f668f_c.jpg
Some beautiful clouds over the Stockholm Archipelago... Didn't last at all long though ^ Yesterday evening, driving West on the M4, there was a brilliant cloudscape (and me without a camera :eek: ) ...some great pastel colours due to the setting Sun and Cirrus as well as Cirrostratus blocking some of the intensity...great hooks with very long tails of the Cirrus and some fascinating rings of thickening Cirrostratus indicating the approaching front... Doesn't sound anywhere near as nice as it looked! :) Thanks to everyone for the continued pics and interest in the thread. ^ Please keep them (and the questions) coming! :) |
Originally Posted by BotB
(Post 19042541)
Yesterday evening, driving West on the M4, there was a brilliant cloudscape (and me without a camera :eek: ) ...some great pastel colours due to the setting Sun and Cirrus as well as Cirrostratus blocking some of the intensity..
https://lh5.googleusercontent.com/-i...6/P1060591.JPG How did they manage to paint the Clouds in "Olympic-Pink"? https://lh3.googleusercontent.com/-p...6/P1060602.JPG https://lh4.googleusercontent.com/-w...6/P1060617.JPG |
I have discovered a new cloud type: the fingerprint cloud...
https://fbcdn-sphotos-h-a.akamaihd.n...28067122_n.jpg |
Oh, well, if we're doing moody sunsets as well …. :D
http://i319.photobucket.com/albums/m...Talk/Scan3.png |
Originally Posted by Herman ze German
(Post 19045181)
like this? It's not so much about the Clouds but more about the colours (and I claim that there is a BA Jet behind the Clouds, just to keep it on topic)
https://lh5.googleusercontent.com/-i...6/P1060591.JPG How did they manage to paint the Clouds in "Olympic-Pink"? Regarding how they got the clouds that Olympic pink colour...well, without bragging too much...what do you think I have been doing this last week? :D Thanks again for posting ^ |
Originally Posted by henkybaby
(Post 19045245)
I have discovered a new cloud type: the fingerprint cloud...
https://fbcdn-sphotos-h-a.akamaihd.n...28067122_n.jpg A nice but quite unique example of Stratocumulus Undulates...usually the area of cloud cover would be significantly larger...must be something unique that caused that cloud to form there and have the rolls... You can also see some further SC in the distance but not undulates...and some higher level very thin Cirrus... Nice ^ |
Originally Posted by BotB
(Post 19045291)
must be something unique that caused that cloud to form there and have the rolls...
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Originally Posted by henkybaby
(Post 19045297)
Must be my swimming pool... :D
:D |
Originally Posted by T8191
(Post 19045265)
Oh, well, if we're doing moody sunsets as well …. :D
http://i319.photobucket.com/albums/m...Talk/Scan3.png Great colours...:) |
It appears I am due to land in Qingdao tomorrow morning, right in the path of a typhoon just as it makes landfall. Just for the record, I asked BotB for his advice. He told me to make sure I get some pictures!
So long and thanks for all the fish :) |
Originally Posted by ColdWalker
(Post 19045534)
It appears I am due to land in Qingdao tomorrow morning, right in the path of a typhoon just as it makes landfall. Just for the record, I asked BotB for his advice. He told me to make sure I get some pictures!
So long and thanks for all the fish :) For the record...this is what happens if you don't come to the Stormchasing DO next April....I will send the Tropical Storm to you! :eek::D (and yes, I did say take pictures :cool: but also gave ColdWalker some advice) |
Found it on Flipboard but hey...
http://4.mshcdn.com/wp-content/uploa...e-rainbow.jpeg Explanation but I think BotB can do better. |
Originally Posted by henkybaby
(Post 19052137)
To the pic: I think the explanation is indeed lacking...and slightly wrong :eek: The ice crystals here are not visible otherwise and there is no cloud above the Cumulonimbus...so the Sun is not lighting it up from above as a typical Fire Rainbow would be, and there is no Cirrus here as is needed usually. What I think is happening is that the ice crystals are present and are indeed uniform in size but do not appear as cloud as the light passes through them...however, due to the CB just below the crystals the Sunlight is being reflected at exactly the right angle back upward towards the crystals and illuminates them to show these colours and make them appear opaque...you can see the top of the CB is still blindingly white in colour which it would not be if the ice crystals were indeed splitting the light from above, also the ice crystal clouds are only really covering a spatial area of that from the CB below, I expect the Sun was to the left of this photo and once bounced it reflected upward to the same footprint. A beautiful picture and fantastic light show from nature ^ So, HB, which description do you like better? ;) Thanks for posting it ^ |
Originally Posted by BotB
(Post 19057735)
The ice crystals here are not visible otherwise and there is no cloud above the Cumulonimbus...so the Sun is not lighting it up from above as a typical Fire Rainbow would be, and there is no Cirrus here as is needed usually. What I think is happening is that the ice crystals are present and are indeed uniform in size but do not appear as cloud as the light passes through them...however, due to the CB just below the crystals the Sunlight is being reflected at exactly the right angle back upward towards the crystals and illuminates them to show these colours and make them appear opaque...you can see the top of the CB is still blindingly white in colour which it would not be if the ice crystals were indeed splitting the light from above, also the ice crystal clouds are only really covering a spatial area of that from the CB below, I expect the Sun was to the left of this photo and once bounced it reflected upward to the same footprint. |
While not remotely offering the dramatic value of the cloud shots up thread, I did manage to capture some of the treats along the way from EDI to LCY on Thursday morning.
https://lh3.googleusercontent.com/-I...0/IMG_1314.JPG 120802 BA8701 [Approx 07:35, Staffordshire] https://lh3.googleusercontent.com/-7...0/IMG_1316.JPG 120802 BA8701 [Approx 07:35, Staffordshire] https://lh4.googleusercontent.com/-b...0/IMG_1318.JPG 120802 BA8701 [Approx 07:40, Northamptonshire] |
Originally Posted by BotB
(Post 19057735)
So, HB, which description do you like better? ;)
Still a pretty sight though. Partly on topic... Can a building actually have its own weather? |
Here is an interesting one:
http://www.flyertalk.com/forum/membe...ent-3-aspx.jpg By the time I posted #1 this is what the sky turned into.... a massive wall of rain: http://www.flyertalk.com/forum/membe...ent-4-aspx.jpg then... in the far distance there is this yellowish light, not clear here but you could detect it on the left hand side: http://www.flyertalk.com/forum/membe...ent-5-aspx.jpg Then this: http://www.flyertalk.com/forum/membe...nt-3-aspx.jpeg |
Great stuff everyone, thanks for posting some new pictures and questions...sorry about the delay in responding...been away enjoying the Olympics and actually working :eek: Thanks for your patience. ^
Originally Posted by ColdWalker
(Post 19057742)
I think we are going to have to call you the Sherlock of clouds. I cannot imagine thinking through a picture to that depth ^
Originally Posted by Prospero
(Post 19057808)
While not remotely offering the dramatic value of the cloud shots up thread, I did manage to capture some of the treats along the way from EDI to LCY on Thursday morning.
https://lh3.googleusercontent.com/-I...0/IMG_1314.JPG 120802 BA8701 [Approx 07:35, Staffordshire] https://lh3.googleusercontent.com/-7...0/IMG_1316.JPG 120802 BA8701 [Approx 07:35, Staffordshire] two layers of cloud, a lower layer of well developed Stratocumulus and a thinner higher layer of Altostratus. The first picture shows how the Stratocumulus has developed into the overstuffed sausage strips (undulates) but then is drastically capped at the top where the vertical motion stops abruptly as the parcels reach the same temperature as the surrounding air and then start to develop horizontally to create a stratus type layer...I do wonder if later in the day the cloud developed into Cumulus or Stratus (former if the atmosphere warmed up due to daytime heating and the latter if the cloud deck was thick enough to stop the Sun from reaching the ground...which would also help the stratification of the deck...) The second is just a nice picture while in between the layers which just shows great 3D effects with the colour contrasts. ^ Thanks for posting.
Originally Posted by henkybaby
(Post 19059871)
An interesting question... depending on how you interpret the question, yes and no. :eek: Why? The no answer is that no building would be big enough to truly produce enough temperature gradient on its own to develop cloud and weather...as was mentioned on the other forum...you can get some condensation due to strong temperature differences over a 24 hour period but this is not really cloud formation and precipitation from such motion...dew condensation is weather however so you could consider it a yes still... But the true yes answer comes from another interpretation...do buildings cause small scale weather changes also known as microclimates. Buildings introduced into a skyscrapper landscape do dramatically change the wind flow, incoming solar radiation pattern, temperature, carbon dioxide levels, etc...there are actually regulations now for such new developments that specify that what level of wind changes are acceptable and what percentage of space can have a certain level of comfort...a lot of wind tunnel work and in situ measurements are made to see how the wind flow will change and impact on the wind loading of the surrounding buildings and strain on those surfaces...so yes, buildings can have their own climate or weather... Might try to do more on this topic later...
Originally Posted by Yahillwe
(Post 19065562)
Here is an interesting one:
http://www.flyertalk.com/forum/membe...ent-3-aspx.jpg By the time I posted #1 this is what the sky turned into.... a massive wall of rain: http://www.flyertalk.com/forum/membe...ent-4-aspx.jpg then... in the far distance there is this yellowish light, not clear here but you could detect it on the left hand side: http://www.flyertalk.com/forum/membe...ent-5-aspx.jpg Then this: http://www.flyertalk.com/forum/membe...nt-3-aspx.jpeg Incredible how quickly a big rain shower / thunderstorm can move and drastically change the atmospheric characteristics such as amount of small PM10 and 2.5 particles, temperature, moisture, cloud cover, etc... Not sure what the yellow light was unfortunately, sorry :( but appreciate you asking and posting! ^ Again, thanks everyone, keep them coming! ^:) |
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