Since
more evaporation leads to more precipitation, most climate researchers expected increased cirrus cloudiness to follow warming.
Does
more evaporation lead to more clouds and if so is the net effect of more clouds to increase albedo or to further increase GHE?
Not exact matches
UHI effects have been documented in city environments worldwide and show that as cities become increasingly urbanised, increasing energy use, reductions in surface water (and
evaporation) and increased concrete etc. tend to
lead to warmer conditions than in nearby
more rural areas.
That heat has helped
lead to
more evaporation from soils and transpiration from plants.
When droughts do occur, they will be
more intense than those in the past, because higher temperatures will
lead to
more evaporation from soils and transpiration from plants.
Higher temperatures
lead to
more evaporation from
Higher temperatures
lead to
more evaporation from lakes, rivers and oceans, and warmer air can hold
more moisture.
In addition, less ice cover can
lead to
more evaporation and lower water levels while warmer water contributes to
more algal blooms and impaired water quality, she says.
While climate change does not cause droughts, it can make them worse, as a warmer atmosphere
leads to
more evaporation from soils.
Increased temperature
leads to increased
evaporation from the sea, and thus to higher absolute humidity (assuming fixed relative humidity), and since H2O molecules are even
more effective infrared absorbers than CO 2 molecules, the warming trend is reinforced.
Rising temperatures over land
lead to increased
evaporation, which renders crops
more susceptible to drought.
The higher temperatures associated with climate change near the surface are resulting in increased
evaporation,
leading to
more water vapor in the stratosphere which chemically reacting with the ozone — resulting in ozone depletion.
Recent record snowfall months have coincided with unusually warm water in the lakes, lack of ice,
leading to
more open water for
more evaporation, Feb, 2007 as an example.
(I think that an anomalously warm ocean surface heated from below would
lead to
more evaporation, and the additional water vapor would give a positive greenhouse effect that would partially offset the effect of a drop in greenhouse gas concentrations.)
One thing that does seem clear is that warmer oceans (a la global warming) mean
more evaporation, and that likely
leads to storms with
more and
more dangerous rainfall of the kind we saw with Hurricane Irene last year.
It seems that increased energy in the boundary layer would logically
lead to
more evaporation.
But now the risk of fire is exacerbated by climate change, which heats air (stoking stronger winds) and water (
leading to
more evaporation and hence stronger precipitation events).
Even in areas where precipitation does not decrease, these increases in surface
evaporation and loss of water from plants
lead to
more rapid drying of soils if the effects of higher temperatures are not offset by other changes (such as reduced wind speed or increased humidity).5 As soil dries out, a larger proportion of the incoming heat from the sun goes into heating the soil and adjacent air rather than evaporating its moisture, resulting in hotter summers under drier climatic conditions.6
That raises the temperature of the skin, and that
leads to
more evaporation and convection.
Note 1: A simple hotspot explanation summarized from this article: Increasing CO2 levels causes atmosphere to warm; then atmosphere causes Earth's surface to warm; warming of oceans cause
evaporation; increased
evaporation leads to
more water vapor in the upper troposphere; water vapor is a powerful greenhouse gas that warms the atmosphere even
more (positive water vapor feedback); the Earth's surface warms even
more; and then auto «repeat and rinse» until Earth's oceans boil, per an «expert.»
While the years with warm and wet weather extremes have also become
more common in the state, increased temperatures accompanying the precipitation tend to
lead to quicker
evaporation, Diffenbaugh said.
These effects are relatively well understood in the lowest level of the atmosphere, the troposphere, where increased warming
leads to greater
evaporation, causing
more water vapour and so further warming, although this is offset to some extent through the formation of clouds that reflect incoming sunlight back into space.
Hotter waters
lead to
more evaporation, which must eventually come down in the form of precipitation.
As per my posts above, it is possible for DLR to increase
more than
evaporation, and so the warming from the DLR beats the cooling from
evaporation,
leading to a warming whereby the system is moving towards equilibrium by increasing temperature and hence increasing sensible heat flux and emitted longwave radiation.
Forget about CO2, if a random increase in water vapor occurs, doesn't that all by itself increase the greenhouse effect,
leading to
evaporation of
more water,
more greenhouse effect, and so on?
If we contend that seas are warming, wouldn't that
lead to higher
evaporation rates resulting in
more cloud cover.
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.
Global warming means hotter temperatures, which
lead to less snow and
more evaporation.
In addition to causing
more downpours, these enhanced
evaporation rates are also
leading to an increase in drought severity in places that are already dry, like California.