Not exact matches
A mighty
atmospheric river, fueled by
water vapor from the Amazon and heat
from the sun, flows across South America until it reaches the Andes and condenses into rain.
Using publically available data about wind speed and
water vapor flux
from real - world
atmospheric rivers over the Atlantic, the scientists created a computer model consisting of thousands of moving virtual air particles and found a close match between the complex swirls — the Lagrangian coherent structures — made by the air particles and the patterns made by the real
atmospheric rivers.
Even models that correctly capture cloud behavior may fail to fully account for other climate feedbacks
from factors like changing snow and sea ice cover,
atmospheric water vapor content, and temperature.
Magnesium lines are critical for determining a black holes mass, but for objects at this distance, the redshifting of the light makes them extremely difficult to capture
from the surface of our planet due to absorption by
atmospheric water vapor.
«When a planet transits, or passes in orbit, in front of its host star, we can use information
from this event to detect
water vapor and other
atmospheric compounds.
They compared two simulations, present and future, of
atmospheric rivers determined
from the vertically integrated
water vapor flux to quantify the changes in
atmospheric rivers that make landfall over western North America.
... The Earth's
atmospheric methane concentration has increased by about 150 % since 1750, and it accounts for 20 % of the total radiative forcing
from all of the long - lived and globally mixed greenhouse gases (these gases don't include
water vapor which is by far the largest component of the greenhouse effect).
Predictive accuracies ranging
from 89.4 % to as high as 99.1 % show that trained deep learning neural networks (DNNs) can identify weather fronts, tropical cyclones, and long narrow air flows that transport
water vapor from the tropics called
atmospheric rivers.
Water vapor, carbon dioxide, and a few other
atmospheric gases act like the glass panes of a greenhouse, allowing sunlight in to warm the planet but preventing heat
from escaping.
Although data are not complete, and sometimes contradictory, the weight of evidence
from past studies shows on a global scale that precipitation, runoff,
atmospheric water vapor, soil moisture, evapotranspiration, growing season length, and wintertime mountain glacier mass are all increasing.
C isothermic level in the pacific appeared to rise
from an average of 400 meters to about 100 meters recently; I find myself wondering then how is it that the oceans heat content is dropping, the solar input appears to be consistant, that one of the GEWEX comitties appears to indicate that the
atmospheric water vapor seems to be decreasing.
A particularly serious omission of the Carlin «report» is the latest research on the
atmospheric H2O response to greenhouse - driven warming [«
Water -
vapor climate feedback inferred
from climate fluctuations,» in GEOPHYSICAL RESEARCH LETTERS, VOL.
In 1896 Swedish chemist and Nobel laureate Svante Arrhenius used Langley's bolometer to measure the heat
from the Moon at various altitudes above the horizon in order to estimate the dependence of
atmospheric heat trapping on amount of
water vapor and CO2 along the line of sight to the Moon, a much longer path near the horizon than at 45 degrees.
The convective heat / mass transfer due to
water dwarfs any radiative forcing; besides — just on optical depth alone, any re-radiated LWIR
from atmospheric CO2 would be IMMEDIATELY absorbed by the much higher concentration of
water vapor in the atmosphere (aka clouds!)
The heat
from this radiative forcing then goes back down, through the
atmospheric CO2 and
water vapor, through the clouds, and down to the surface where it has sex with liquid
water.
What it does show is a major role for
atmospheric water vapor, to which there is a significant direct human contribution
from both the combustion of hydrocarbon fuels and the cooling needed by steam generation of power, but one that is totally disregarded by Trenberth and the IPCC.
About a little under 1 / 3rd of
atmospheric absorption is
from CO2 and other GHGs and over 2 / 3rds is
from water vapor.
Thus, the phase change of
water from liquid to gas, after absorbing photons, is a feedback, the absorption of photons and the emission of photons
atmospheric water vapor is a forcing, but the photons released when gaseous
water become liquid
water is a feedback.
Add CO2 — > increased
atmospheric LW absorption — > direct radiative constraint
from the E (SRF, clear) = 2OLR (clear) geometric requirement — > immediate (instantaneous) negative radiative
water vapor feedback.
Evidence that extreme precipitation is increasing is based primarily on analysis1, 2,3 of hourly and daily precipitation observations
from the U.S. Cooperative Observer Network, and is supported by observed increases in
atmospheric water vapor.4 Recent publications have projected an increase in extreme precipitation events, 1,5 with some areas getting larger increases6 and some getting decreases.7, 2
Recent changes in tropospheric
water vapor over the Arctic as assessed
from radiosondes and
atmospheric reanalyses.
Miskolczi found in the balloon sounding record that as
atmospheric CO2 rose absolute humidity declined in direct proportion such that the extra greenhouse effect
from CO2 was exactly cancelled by less greenhouse effect
from water vapor.
Bailey, A., J. Nusbaumer, and D. Noone, 2015: Precipitation efficiency derived
from isotope ratios in
water vapor distinguishes dynamical and microphysical influences on subtropical
atmospheric constituents.
The net evaporation field (evaporation minus precipitation) shows that
atmospheric water vapor is transported
from the night side to the day side.
Again, though the
water vapor emitted
from cooling towers can and does create impressive cloud formations under the right conditions, this is a very different issue than being the primary mechanisms of Earth's
atmospheric water vapor generation for fueling storms which is what some are falsely claiming.
At this point since there are papers out there that suggest a negative feedback and the 2.5 + x positive
water vapor feedback
from the IPCC is clearly a non-starter in view of the pause, CAGW has to demonstrate via real
atmospheric studies what the actual feedback is.
The Special Sensor Microwave Imager (SSM / I) radiometers provide brightness temperatures at three different frequencies (19.35, 37.0 and 85.5 GHz)
from which are estimated: wind speed when not raining, integrated
atmospheric water vapor content, liquid
water content, and a rain index.
1 Positive 1.1 Carbon cycle feedbacks 1.1.1 Arctic methane release 1.1.1.1 Methane release
from melting permafrost peat bogs 1.1.1.2 Methane release
from hydrates 1.1.2 Abrupt increases in
atmospheric methane 1.1.3 Decomposition 1.1.4 Peat decomposition 1.1.5 Rainforest drying 1.1.6 Forest fires 1.1.7 Desertification 1.1.8 CO2 in the oceans 1.1.9 Modelling results 1.1.9.1 Implications for climate policy 1.2 Cloud feedback 1.3 Gas release 1.4 Ice - albedo feedback 1.5
Water vapor feedback 2 Negative 2.1 Carbon cycle 2.1.1 Le Chatelier's principle 2.1.2 Chemical weathering 2.1.3 Net Primary Productivity 2.2 Lapse rate 2.3 Blackbody radiation
States that other feedbacks likely to emerge are those in which key processes include surface fluxes of trace gases, changes in the distribution of vegetation, changes in surface soil moisture, changes in
atmospheric water vapor arising
from higher temperatures and greater areas of open ocean, impacts of Arctic freshwater fluxes on the meridional overturning circulation of the ocean, and changes in Arctic clouds resulting
from changes in
water vapor content
On January 3 and 4, the first of two back - to - back
atmospheric river storms (wide paths of moisture in the atmosphere composed of condensed
water vapor), brought heavy rain and mountain snow to central California, ahead of an even more intense round of heavy precipitation brought by a powerful, long - duration
atmospheric river storm pulling warm and moist air to California
from the subtropical and equatorial region southeast of Hawaii.
The suspects include changes in
atmospheric water vapor, a strong greenhouse gas, or the noxious sunshade of haze emanating
from factories.
This basic picture is complicated by important interactions between
water vapor, clouds,
atmospheric motion, and radiation
from both the Sun and the Earth.
Variations in the
atmospheric water vapor field occur on timescales
from a few minutes to decades.
Negative trends in q as found in the NCEP data would imply that long - term
water vapor feedback is negative — that it would reduce rather than amplify the response of the climate system to external forcing such as that
from increasing
atmospheric CO2.
0.2 C, 0.3 C, and 0.4 C short term rises in ocean surface temperature
from oscillations create huge plumes of
atmospheric water vapor.
By harvesting
water vapor from the air and condensing it into liquid,
atmospheric water generators can essentially pull
water from the air, and these devices hold a lot of promise for providing an independent source of drinking
water.
But in fact Chap.9 of WG1 where the «most» claim originates leaves out
atmospheric water vapor -LRB-[H2O]-RRB-
from its «non-human» or «natural» prime movers of radiative forcing which would have surprised Arrhenius and Tyndall; what it asks us to believe is that [H2O] ONLY originates
from rising temperature caused by CO2, and that the role of the sun in producing 99 % of
atmospheric water vapor is irrelevant and not a natural forcing.
One of the most well - known effects of global warming is an intensification of the
water cycle, with higher air temperatures leading to increased evaporation
from the seas and soils, and more
atmospheric water vapor contributing to more frequent heavy precipitation events.
Once permafrost starts melting, there are feedbacks
from changes in albedo, methane emissions, the thermal properties of surface
water, and increases in
atmospheric water vapor.
MSU Channel 1 is not used to monitor
atmospheric temperature because it's too much sensitive to the emission
from the surface, furthermore it is heavily contaminated by
water vapor / liquid
water in the lowermost troposphere.
Regardless, climate models are made interesting by the inclusion of «positive feedbacks» (multiplier effects) so that a small temperature increment expected
from increasing
atmospheric carbon dioxide invokes large increases in
water vapor, which seem to produce exponential rather than logarithmic temperature response in the models.
The direct CO2 radiative forcing is the change in infrared radiative fluxes for a doubling CO2 (typically
from 287 to 574 ppm), without any feedback processes (e.g.
from changing
atmospheric water vapor amount or cloud characteristics.)
Is there some sort of a «natural thermostat» mechanism by which
atmospheric water vapor content is regulated to prevent a long - term «positive feedback»
from water vapor, as is assumed by all the IPCC climate models?
The question that this raises: Is there some sort of a «natural thermostat» mechanism by which
atmospheric water vapor content is regulated to prevent a long - term «positive feedback»
from water vapor, as is assumed by all the IPCC climate models?