Sentences with phrase «about upper atmosphere»

That's a recent one from a series of posts about upper atmosphere cooling as a distinctive fingerprint of greenhouse gas warming; they chronicle how our hosts have worked hard to understand and explain this.

That says nothing about the upper atmosphere.

He said that since people don't think much about the upper atmosphere, they can come to rational, albeit scientifically incorrect, conclusions.

Not exact matches

As a result of these studies, the Navy recommends an upper limit of about 8000 ppm for cruises of ninety days, and nasa recommends an upper limit of 5000 ppm for missions of one thousand days, both assuming a total pressure of one atmosphere.

About 5 to 10 times more neutral particles could be lost through a process called photochemical escape, which happens when UV radiation breaks apart molecules in the upper atmosphere.

«Even our upper estimate, 0.01 bar, is an insignificant amount in comparison to the atmosphere required to maintain a sufficiently strong greenhouse effect, about 1 bar or more according to climate models.»

Twice each day, about an hour before midnight and noon, Coordinated Universal Time, hundreds of meteorologists worldwide send balloons into the upper atmosphere to measure pressure, temperature, and relative humidity.

But for planetary scientists, Jupiter's most distinctive mystery may be what's called the «energy crisis» of its upper atmosphere: how do temperatures average about as warm as Earth's even though the enormous planet is more than fives times further away from the sun?

«MAVEN is giving us unprecedented detail about hydrogen escape from the upper atmosphere of Mars, and this is crucial for helping us figure out the total amount of water lost over billions of years,» said Ali Rahmati, a MAVEN team member at the University of California at Berkeley who analyzed data from two of the spacecraft's instruments.

The beam's energy, although strong enough to affect overflying airplanes, which have an operating ceiling of about 26 kilometers (in Earth's stratosphere), is too diffuse by the time it reaches the ionosphere, part of the planet's upper atmosphere.

Solar storms can cause dramatic change in the temperatures of the upper atmosphere, including the ionosphere, which ranges from about 30 miles in altitude to about 600 miles high — the edge of space.

After skimming so close to Jupiter's upper atmosphere, the spacecraft soared back up from the planet's cloud tops at about 9:30 P.M. into a looping, elongated orbit out to 8.1 million kilometers.

The meteoroid weighed around 10,000 tons, but only about 2,000 tons of debris were recovered, which meant something happened in the upper atmosphere that caused it to disintegrate.

NASA is funding 11 science projects across America for scientists to take advantage of the unique astronomical event to learn more about the Sun and its effects on Earth's upper atmosphere.

Surfing complete21 February 2018 Slowed by skimming through the very top of the upper atmosphere, ESA's ExoMars has lowered itself into a planet - hugging orbit and is about ready to begin sniffing the Red Planet for methane.

Earth and near - Earth observations (e.g. from the Spitzer Space Telescope) have also told us a lot about the composition of the satellites and the upper atmospheres of Uranus and Neptune.

The meteors are bits of comet debris that «zip into the earth's upper atmosphere at speeds of about 40 - 60 km per second,» or 30 - 50 miles per second, says MacRobert.

«During the deep - dip campaigns, we lower the lowest altitude in the orbit, known as periapsis, to about 125 km, which allows us to take measurements throughout the entire upper atmosphere.»

The Trace Gas Orbiter has reached its final orbit after a year of «aerobraking» that ended in February.This exciting operation saw the craft skimming through the very top of the upper atmosphere, using drag on its solar wings to transform its initial highly elliptical four - day orbit of about 200 x 98 000 km into the final, much lower and near - circular path at about 400 km.

Alastair, the atmosphere equilibrates with the upper ocean whose CO2 / HCO3 - / CO32 - content is about the same size.

Most of Saturn's hydrogen is in its molecular form -LRB--RRB-, concentrated to the upper layers of the atmospheres (down to about 2 million bars!).

Amid the gold - rush atmosphere of recent months, however, something very strange has emerged, something more pertinent to art than to money — a new attitude, now pervasive in the upper echelons of the art world, about the meaning and experience and value of art itself.

Alastair, the atmosphere equilibrates with the upper ocean whose CO2 / HCO3 - / CO32 - content is about the same size.

He took the industry line, that delay was smarter than prompt action, and that physicists» models of change in the upper atmosphere weren't enough reason to be concerned about ozone loss — that there wasn't proof yet that it would cause harm at ground level to humans, so wait, delay.

AT sufficiently short wavelengths, the temperature of the upper atmosphere and near TOA would have to be a sizable fraction of the surface temperature in order for the Planck function for higher levels to be a small fraction of the that at the surface (example: at 5 microns, relative to T = 250 K and the Planck function at 250 K, a 20 % reduction in temperature reduces the Planck function by about 94.4 %).

«Sunlight passes through the atmosphere largely unhindered and warms the Earth's surface; the warmed surface radiates heat and some of this radiation is absorbed in the upper atmosphere and re-emitted, about half of the re-emitted energy returning to the Earth's surface.

In one instance the article states about cooling in the upper atmosphere:

I expect to hear about proposals to dump SO2 in the upper atmosphere, etc..

I get that carbon isotopes are critical in determining CO2 sources and ways of determining concentrations but my question speicifically was what is it about a cooling upper atmosphere in conjunction with a warming lower atmosphere that is unique.

It says nothing about CO2 ′ s greenhouse effect because it reports the upper atmosphere absorbing high velocity helium and hydrogen and other particles, not infra - red light.

Basically, as fast as heat loiters about on our planet's surface, it either radiates off to space or Water will pick it up and carry it to the upper layers of our atmosphere, where it will change form from gas to liquid or solid giving off heat to space while being super cooled at the same time.

The Institute of Atmospheric Physics investigates the physics and chemistry of the global atmosphere from the Earth's surface up to the upper boundary of the middle atmosphere at about 120 km height.

Until about 1850, there was some natural variability, as can be seen in coralline sponges (following the changes in the upper ocean layer) and ice cores (for the atmosphere).

If almost all of the heat transfer from surface to upper atmosphere is by convection, then you can change anything you want about the radiation system, more GHG, less, it won't matter.

Once the CO2 concentration of the upper ocean is depleted by growth and sinking of phytoplankton, the timescale for gas exchange with the atmosphere is about a year for a one - hundred meter ocean mixed layer, typical of the tropics.

(Fingerprint studies draw conclusions about human causation that can be deduced from: (a) how the Earth warms in the upper and lower atmosphere, (b) warming in the oceans, (c) night - time vs day - time temperature increases, (d) energy escaping from the upper atmosphere versus energy trapped, (e) isotopes of CO2 in the atmosphere and coral that distinguish fossil CO2 from non-fossil CO2, (f) the height of the boundary between the lower and upper atmosphere, and (g) atmospheric oxygen levels decrease as CO2 levels increase.

[Ankh]:» «As for CO2 itself, the old measurements made at sea - level pressure had little to say about the frigid and rarified air in the upper reaches of the atmosphere, where most of the infrared absorption takes place.

http://www.haarp.alaska.edu/ Im trying not to get caught up in conspiricy with this, but i am surprised that as HAARP is apparently messing with the upper atmosphere that someone would know something about it.

If we agree with you that CO2 readings are false and surface temperature rise is false, then what about sea level rise, precipitation reduction, reduction in the temperature of the upper atmosphere, or evaporation pan reduction?

Above the routine maximum height of the radiosonde data (above levels where atmospheric pressure drops below 100 millibars, at about 17 km [10.5 miles]-RRB-, rocketsondes, rocket - borne grenades, and falling sphere experiments have been used to monitor the thermal structure of the upper atmosphere.

This must result in about 85 times as much infrared radiation from the Sun, at 3.3 microns wavelength, being sent back into space by the absorption and re-radiation from methane molecules in the upper atmosphere as could be re-radiated into the lower atmosphere for infrared radiation sourced from the warmed Earth.

While Earth's lower atmosphere is about one percent water vapor (although it seems much higher in the humid Louisiana summers), the upper atmosphere, where ultraviolet radiation can penetrate, is very dry: a cold trap, a combination of pressure and temperature, prevents water vapor from rising high in the earth's atmosphere.

32 Solar Energy Source - Sun Solar Energy Source - Sun The earth's upper atmosphere receives about 1,400 W per square meter of energy from the sun.

Don't worry about that, methanol is going to be far worse and when large quantities of hydrogen gas are released into the upper atmosphere there is going to be all sorts of fun with ozone, hydroxyl radical and NOx levels.

While the polar and subtropical jet streams are the best known and most studied, other jet streams can form when wind speeds are above 58 mph (93.3 kph) in the upper atmosphere at about 6 miles (9.6 kilometers) to 9 miles (14.5 kilometers) above the surface.

I believe Nathan Myhrvold suggested possibly transporting dust into the upper atmosphere about 5 years ago.

And the upper ocean has warmed so much in the past 50 years that its added heat would be enough to warm the lower atmosphere by about 36 °C (thankfully a physically impossible feat).

this whole discussion about the various temperatures and cooling or warming rates of the upper and lower layers of the atmosphere seems to me totally pointless in view of what I said earlier i.e. it is the factors that govern cloud formation & overcast conditions that drive global temperatures.

Moreover, in the upper atmosphere where the lines are separated there is little absorption because of that.If you want the real story about the problem with Arrhenius's model read this poster.

About «nuclear winter», is it foolish to think that aerosols released from nuclear testing in upper atmosphere have contributed to the cooling phase 1950 - 70?