So what? Water vapour rises because it is lighter than air. Once it reaches the condensation level altitude then you have two possibilities:
If the condition is right (updraft, enough moisture and the droplets are relatively light) then you see the cloud formation.
If the condition is not right, then cloud doesn't form, it dissipates or precipitates in form of rain, snow or ice.
So if you see a cloud, it means that the condition is right for it to be formed and stay. As simple as that!You still do not understand what is going on.
Clouds ARE NOT water vapour: they are either water droplets or ice crystals.
Official science explanation:
Clouds stay aloft for the same reason that dust motes floating around, also heavier than air: air drafts push them around.But, just like the pseudo-explanation you came up with, this cannot be true.
The winds explanation and the small size of the cloud's water droplets are used. But this does not seem to be adequate, as is stated in the the quote below. The analogy of clouds to dust motes seems woefully inadequate...why do not dust motes congregate into clouds?
The ingredients of the air—oxygen, nitrogen, argon and other gases—though not in a compound but in a mixture, are found in equal proportions at various levels of the atmosphere despite great differences in specific weights. The explanation accepted in science is this: “Swift winds keep the gases thoroughly mixed, so that except for water-vapor the composition of the atmosphere is the same throughout the troposphere to a high degree of approximation.” This explanation cannot be true. If it were true, then the moment the wind subsides, the nitrogen should stream upward, and the oxygen should drop, preceded by the argon. If winds are caused by a difference in weight between warm and cold air, the difference in weight between heavy gases high in the atmosphere and light gases at the lower levels should create storms, which would subside only after they had carried each gas to its natural place in accordance with its gravity or specific weight. But nothing of the kind happens.
When some aviators expressed the belief that “pockets of noxious gas” are in the air, the scientists replied:
“There are no ‘pockets of noxious gas.’ No single gas, and no other likely mixture of gases, has, at ordinary temperatures and pressures, the same density as atmospheric air. Therefore, a pocket of foreign gas in that atmosphere would almost certainly either bob up like a balloon, or sink like a stone in water.”
Why, then, do not the atmospheric gases separate and stay apart in accordance with the specific gravities?But that doesn't explain why water molecules condensed into liquid form 1000 times denser than the air directly below them, manage to suspend themselves against gravity.
Please read carefully.
The cloud argument based on wind holding them up does not work in this case.
And neither does the moist air less dense than dry air argument (although that doesn't work for clouds either because we are talking about condensed water in liquid form not the gaseous vapour form).Fog can appear on frozen lakes so I doubt covection is operating in that case. We are talking about droplets that are 1000 times the density and weight of the very slow moving warm air below moving upward. There shouldn't be any physical process to overide the gravity pulling on those droplets.
I think it's obvious there is another unexplained process of an electrical nature suspending the water against the pull of gravity.
More details.
I find it hard to accept that 1000 times denser and heavier water droplets are able to be suspended by air molecules. They may counteract the pull of gravity for a short while for but the weight should overwhelm this buffeting pretty quick.
For it to last even a short while the air molecules would need to be flowing mainly upwards but this certainly isn't true within a milimeter of the surface of the earth. There is a reason the gravity is counteracted and its not convection or updraft. I only state that I believe the reason to have an electrical nature.
I am certain that electricity plays a far larger role generally in the atmosphere than the mainstream is aware of or is willing to admit.
Floating clouds that defy gravity are a direct observational contradiction to the pseudoscientific cult of gravitation.
Do you realize that the link you provided points out other observations that are not at exactly 4am, 4pm, 10am and 10pm?
Do you also realize that that link also indicates that there are places with diurnal pressure changes and not just the semi-diurnal that you keep pointing out? You haven't done your homework, just as usual.
How to properly calculate absolute barometer pressure measurements:
http://adsabs.harvard.edu/full/1969SSRv...10....3LRemember, that your links provide information about the sea level and mean sea level pressure measurements.
This is much easier to perform than the actual absolute barometer pressure calculation.
NATIONAL WEATHER SERVICE official information
The most basic change in pressure is the twice daily rise and fall in due to the heating from the sun.
Each day, around 4 a.m./p.m. the pressure is at its lowest and near its peak around 10 a.m./p.m. The magnitude of the daily cycle is greatest near the equator decreasing toward the poles.
http://oceanservice.noaa.gov/education/yos/resource/JetStream/atmos/pressure.htmTHIS HAPPENS EACH AND EVERY DAY, EVERYWHERE.
Can you understand this much?
Each day, around 4 a.m./p.m. the pressure is at its lowest and near its peak around 10 a.m./p.m. That this is actually the case can be readily deduced from the very links you provided.
http://weather.noaa.gov/weather/current/RCSS.htmlTake a look at the ARTIFICIAL NATURE OF THE DATA AT THE PRESSURE INCHES COLUMN.
MUCH OF THE SAME NUMBERS, REPEATED: 29.77 - 29.80 - 29.83 - 29.85
This means that we are dealing WITH SEA LEVEL PRESSURE CALCULATIONS, which, as I have said, are much easier to perform than actual absolute barometer measurements.
HERE IS THE REAL DATA ON TAIWAN:
http://www-das.uwyo.edu/~geerts/cwx/notes/chap01/diurnal.htmlSurface pressure measurements in Taiwan (at 25 deg. N) are least around 4am and (especially) 4 pm Local Standard Time, and most around (especially) 10am, and 10pm LST; the amplitude of the semidiurnal cycle is about 1.4 hPa.
My links provide the correct information about the maximums and minimums of the barometric pressure readings, as always.
THE SAME ARTIFICIAL NUMBERS USED IN THE CORONADO LINK YOU PROVIDED.
http://www.wrh.noaa.gov/mesowest/getobext.php?wfo=sgx&sid=KNZY&num=72&raw=0Station pressure: 29.764 - 29.774 - 29.754 - 29.744 ; also there is precise correlation between the SEA LEVEL PRESSURE data and the Station Pressure data: this only means that the sea level pressure and mean sea level pressure data was used AND NOT THE REAL ABSOLUTE BAROMETER MEASUREMENTS.
OFFICIAL ATMOSPHERIC SCIENCE INFORMATION:
The mean sea level pressure (MSLP) is the atmospheric pressure at sea level or (when measured at a given elevation on land)
the station pressure reduced to sea level assuming that the temperature falls at a lapse rate of 6.5 K per km in the fictive layer of air between the station and sea level.
This is the atmospheric pressure normally given in weather reports on radio, television, and newspapers or on the Internet. When barometers in the home are set to match the local weather reports, they measure pressure reduced to sea level,
not the actual local atmospheric pressure. The reduction to sea level means that the normal range of fluctuations in atmospheric pressure is the same for everyone.
THIS IS THE INFORMATION CONTAINED IN YOUR LINKS, NOT THE ACTUAL BAROMETER PRESSURE MEASUREMENTS.
THIS IS THE REASON FOR THE ARTIFICIAL NATURE OF THE NUMBERS IN THE SEA LEVEL PRESSURE AND STATION PRESSURE DATA.
But what else could we expect from you? You come here without any idea of what is going on, not realizing the precise difference between sea level/mean sea level pressure measurements and ACTUAL ABSOLUTE BAROMETER MEASUREMENTS.
If the work is properly done, then this is what you will get:
http://books.google.ro/books?id=vNkZAQAAIAAJ&pg=RA1-PA217&lpg=RA1-PA217&dq=barometer+pressure+semidiurnal+change+10+am+4+pm&source=bl&ots=zgQHfJMC_w&sig=NMbmgLuqwPVwEfGVp3WuSu8Mdgg&hl=ro&sa=X&ei=-As4UqWRL4qp4ATI2ICIBA&ved=0CEAQ6AEwAQ#v=onepage&q=barometer%20pressure%20semidiurnal%20change%2010%20am%204%20pm&f=falseTHIS IS REAL SCIENCE: DAILY SEMIDIURNAL CHANGES IN THE BAROMETER PRESSURE READING.
Maximums at 10:00 am and 10:00 pm, and minimums at 4:00 am and 4:00 pm.
I ask you again, do you understand English?
“It has been known now for two and a half centuries, that there are more or less daily variations in the height of the barometer, culminating in two maxima and two minima during the course of 24 hours.
The same observation has been made and puzzled over at every station at which pressure records were kept and studied, but without success in finding for it the complete physical explanation. In speaking of the diurnal and semidiurnal variations of the barometer, Lord Rayleigh says: ‘The relative magnitude of the latter [semidiurnal variations], as observed at most parts of the earth’s surface, is still a mystery, all the attempted explanations being illusory.’”
One maximum is at 10 a.m., the other at 10 p.m.; the two minima are at 4 a.m. and 4 p.m.
The heating effect of the sun can explain neither the time when the maxima appear nor the time of the minima of these semidiurnal variations. If the pressure becomes lower without the air becoming lighter through a lateral expansion due to heat, this must mean that the same mass of air gravitates with changing force at different hours.End of discussion. The daily semidiurnal changes in the barometric pressure readings, CANNOT BE EXPLAINED AT ALL: If the pressure becomes lower without the air becoming lighter through a lateral expansion due to heat, this must mean that the same mass of air gravitates with changing force at different hours.