The major one looks to be additional latent heat provided by evaporation which is being caused additional back radiation and
the warmer water column.
Not exact matches
Warming temperatures in the Chesapeake Bay region's streams will have implications for future shifts in
water quality, eutrophication and
water column layers in the bay.
The injection of so much cold
water, they say, could lead to a stratification of the
water column, with
warm water buried underneath cold surface
water.
«We saw major changes in the algae consistent with the
water warming that indicates changes in the physical structure of the
water column.»
Carozza et al (2011) find that natural global
warming occurred in 2 stages: First, global
warming of 3 ° to 9 ° C accompanied by a large bolus of organic carbon released to the atmosphere through the burning of terrestrial biomass (Kurtz et al, 2003) over approximately a 50 - year period; second, a catastrophic release of methane hydrate from sediment, followed by the oxidation of a part of this methane gas in the
water column and the escape of the remaining CH4 to the atmosphere over a 50 - year period.
Such knowledge is important in a
warming world where
water column deoxygenation in the coastal zone is becoming more and more common.Link
The induced overturning of the
water column will bring still more
warmer water back down to the sea floor, adding another energy source.
The
warming is not limited to the air
column; the
waters of the Arctic Ocean are
warming, too.
Global
warming is expected to exacerbate the situation, through its effects on oxygen solubility and
water column stratification.
(skipped evaporation of
water —
warmer air holds more
water —
column has been measured etc..
In Relationships between
Water Vapor Path and Precipitation over the Tropical Oceans, Bretherton et al showed that although the Western Pacific warmer surface waters increased the water in the atmosphere compared to the Eastern Pacific, rainfall was lower in the Western Pacific compared to the Eastern Pacific for equal amounts of water vapor in the atmospheric column — e.g., about 10mm / day in the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amo
Water Vapor Path and Precipitation over the Tropical Oceans, Bretherton et al showed that although the Western Pacific
warmer surface
waters increased the
water in the atmosphere compared to the Eastern Pacific, rainfall was lower in the Western Pacific compared to the Eastern Pacific for equal amounts of water vapor in the atmospheric column — e.g., about 10mm / day in the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amo
water in the atmosphere compared to the Eastern Pacific, rainfall was lower in the Western Pacific compared to the Eastern Pacific for equal amounts of
water vapor in the atmospheric column — e.g., about 10mm / day in the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm water vapor, the peak of the distribution of water vapor amo
water vapor in the atmospheric
column — e.g., about 10mm / day in the Western Pacific, versus ~ 20mm / day in the Eastern Pacific at 55 mm
water vapor, the peak of the distribution of water vapor amo
water vapor, the peak of the distribution of
water vapor amo
water vapor amounts.
% due to eruption 9.5 % (assuming the average thickness of melted ice was 1 meter, and not allowing for any of the heat being lost to
warming the 4 km thick sea
water column, or air, or evaporation)
This rise may have been eustatically controlled, possibly through a combination of thermal expansion of the oceanic
water column and melting of unknown sources of high - altitude or polar ice caps in response to global
warming.»
The sum effect is to displace isopycnals (parcels of
water of the same density) vertically in the
column, i.e. the deep ocean
warms.
The vertical temperature profile may also play a role, as
warmer water is lighter, and thus the stability of the
water column depends on how fast the temperature drops with depth — more stable
water column is less prone to mixing.
The resulting weaker density stratification allowed more vertical mixing of the
water column during storms in late September and early October, leading to the observed
warming of the near - bottom layer in the still ice - free Laptev Sea...
Warmer water temperatures near the seabed may also impact the stability of the shelf's submarine permafrost.»
The difference lies in the absence of
water vapour in the descending
column which then
warms at a different rate to the cooling in ascent.
Carozza et al (2011) find that natural global
warming occurred in 2 stages: First, global
warming of 3 ° to 9 ° C accompanied by a large bolus of organic carbon released to the atmosphere through the burning of terrestrial biomass (Kurtz et al, 2003) over approximately a 50 - year period; second, a catastrophic release of methane hydrate from sediment, followed by the oxidation of a part of this methane gas in the
water column and the escape of the remaining CH4 to the atmosphere over a 50 - year period.
A thunderstorm event might be best depicted as a run - away rising
column of air that is becoming progressively
warmer than the surrounding air as condensing
water vapor yields its heat of vaporization until almost all
water vapor has condensed out and then cooling at a rate of 9.8 deg C per 1000 meters, it eventually reaches a
warmer layer of air and spreads out like smoke over a ceiling.
As man start to tech up with fire, cooking,
warming, pottery, field clearing, charcoal making for metals, we started to deforest the Earth and the worldwide net effect was to change the weather flows as the standing
columns of
water know as trees where cut down and burned to change the heat absorption properties of the Hydrothermodynamic system of the Earth.
The
warmed surface
water is then transferred downward into the
water column by conduction and convection.
I showed that the height of the
water column of the tropical Pacific reflected the same rise as the 1995/96 OHC, countering your inference that a pocket of
warm water rose up from below the 700 meter depth in the tropical Pacific.
During the six years of in - situ measurements, an oceanic
warming of 0.77 ± 0.11 Wm − 2 occurred in the upper 2000m depth of the
water column.
Spengler et al. (2011) did the following: they took a normal
column of air with an observable quantity of the
water vapor and then imagined, in a thought experiment, that all vapor between 2 and 4 km in the atmosphere suddenly condenses, the latent heat is released in the sensible form and
warms the atmosphere.
It can
warm a kilometer deep
column of
water by 0.75 C and you want to neglect this effect.
A
warming surface ocean is also likely to increase the density stratification of the
water column (i.e., Steinacher et al., 2010), altering the circulation and potentially increasing the isolation of
waters in an OMZ from contact with the atmosphere, hence increasing the intensity of the OMZ.
In order of seniority, the seven feedbacks that seem outstanding are:
Water vapour — rising by ~ 7 % per 1.0 C of warming; Albedo loss — due mostly to cryosphere decline; Microbial peat - bog decay — due to rising CO2 affecting ecological dynamics; Desiccation of tropical and temperate soils — due to SAT rise and droughts; Permafrost melt — due to SAT rise plus loss of snow cover, etc; Forest combustion — due to SAT rise, droughts, pest responses, etc; Methyl clathrates [aka methane hydrates] now threatened by rising sea - temperatures, increased water column mixing,
Water vapour — rising by ~ 7 % per 1.0 C of
warming; Albedo loss — due mostly to cryosphere decline; Microbial peat - bog decay — due to rising CO2 affecting ecological dynamics; Desiccation of tropical and temperate soils — due to SAT rise and droughts; Permafrost melt — due to SAT rise plus loss of snow cover, etc; Forest combustion — due to SAT rise, droughts, pest responses, etc; Methyl clathrates [aka methane hydrates] now threatened by rising sea - temperatures, increased
water column mixing,
water column mixing, etc..
The
warming of the oceans follows different patterns in the upper 400 m than deeper in the
water column.
Warming bottom
waters in deeper parts of the ocean, where surface sediment is much colder than freezing and the hydrate stability zone is relatively thick, would not thaw hydrates near the sediment surface, but downward heat diffusion into the sediment
column would thin the stability zone from below, causing basal hydrates to decompose, releasing gaseous methane.
In the most recent observations from 2013 - 2014, the upper layers» compensatory variability has given way to
warming over the entire
water column from 0 — 2000 m.
Bottom
waters at depths of 50 or 100 m might
warm relatively quickly with a collapse in sea ice cover, but it would take centuries for that heat to diffuse through the 100 - 150 m of sediment
column to the hydrate stability zone.
JK at 151: thanks for quant work indicating that 20 % of methane release from
warmed ocean floor will be changed in the
water column.
The
warming of the surface of the ocean is thought to increase stratification within the
water column, preventing the nutrients in the cool
[32] Therefore, the overall result of large blooms of coccolithophores is a decrease in
water column productivity, rather than a contribution to global
warming.
Such knowledge is important in a
warming world where
water column deoxygenation in the coastal zone is becoming more and more common.
The
warming of the surface of the ocean is thought to increase stratification within the
water column, preventing the nutrients in the cool deep ocean from rising to the surface.
The Arctic Ocean may be a special case, because of the shallower stability zone due to the colder
water column, and because
warming is expected to be more intense in high latitudes.