The warming ocean and atmosphere that are already melting glaciers and ice sheets produce a catastrophic rise in the ocean.
Second, the quantity of methane necessary to explain the carbon isotope ratio, as calculated by Dickens, would be much less than that required to
warm ocean and atmosphere temperatures to the extent estimated by PETM temperature proxies and calculated by physical climate models.
Warmer temperatures do not necessarily translate to more water vapour in an air - water vapour mixture, Chris please explain how «
warmer the oceans and the atmosphere» equate to «more greenhouse effect from water vapour in the atmosphere.»
CHris O» What you are saying put «pretty simpl [y]» is «
the warmer the oceans and the atmosphere [get] the more water vapor [the] more greenhouse effect from water vapor in the atmosphere.»
Pretty simple,
the warmer the oceans and the atmosphere, the faster water evaporates from the oceans and the more water vapor the atmosphere can hold = > more greenhouse effect from water vapor in the atmosphere.
Burning fossil fuels and other economic activities release greenhouse gases such as carbon dioxide and methane into the atmosphere, and
warm the ocean and atmosphere.
Not exact matches
Conditions are otherwise favorable for intensification through Sunday, with a moist
atmosphere, light wind shear less than 10 knots,
and very
warm ocean waters near 30 °C (86 °F).
Science questions the answers, e.g. hurricanes are caused by
warm moist
ocean air being drawn up into the cooler
atmosphere and creating a wind pattern though we are still open to consider other factors that may have influence on this cycle.
«The widespread loss of Antarctic ice shelves, driven by a
warming ocean or
warming atmosphere, could spell disaster for our coastlines —
and there is sound geological evidence that supports what the models are telling us,» said Robert M. DeConto of the University of Massachusetts Amherst, a co-author of the study
and one of the developers of the ice - sheet model used.
Forming in the system's colder outer regions, where volatile compounds such as water
and carbon dioxide freeze out, makes it possible that the planets incorporated those ices
and carried them along to a
warmer place where they could melt, evaporate,
and become
oceans and atmospheres.
Co-author Hayley Hung, a scientist with Environment Canada's Air Quality Division who studies toxic organic pollutants in the Arctic, said that in recent years, researchers had posited that
warmer conditions would liberate POPs stored in land, ice
and ocean reservoirs back into the
atmosphere.
The simulations also suggest that the removal of excess carbon dioxide from the
atmosphere by natural processes on land
and in the
ocean will become less efficient as the planet
warms.
Perhaps extra carbon dioxide from a period of heightened seafloor eruptions eventually percolates through the
ocean and into the
atmosphere, allowing
warming that would deliver a coup de grâce to the massive ice sheets.
That region, he says, is susceptible to even small amounts of
warming and cooling from the
atmosphere —
and how cold the water gets influences how much or how little it sinks, thereby driving or delaying, respectively, the
ocean conveyer belt.
The planets of the TRAPPIST - 1 system could be complex worlds with volcanoes,
atmospheres and warm subsurface
oceans.
«There was relatively more carbon dioxide emitted from the deep
ocean and released to the
atmosphere as the climate
warmed,» Jaccard says.
Bowen says the two relatively rapid carbon releases (about 1,500 years each) are more consistent with
warming oceans or an undersea landslide triggering the melting of frozen methane on the seafloor
and large emissions to the
atmosphere, where it became carbon dioxide within decades.
«As the climate gets
warmer, the thawing permafrost not only enables the release of more greenhouse gases to the
atmosphere, but our study shows that it also allows much more mineral - laden
and nutrient - rich water to be transported to rivers, groundwater
and eventually the Arctic
Ocean,» explained Ryan Toohey, a researcher at the Interior Department's Alaska Climate Science Center in Anchorage
and the lead author of the study.
That's greater than the
warming rate of either the
ocean or the
atmosphere,
and it can have profound effects, the scientists say.
The Indonesian archipelago sits in the Indo - Pacific
Warm Pool, an expanse of
ocean that supplies a sizable fraction of the water vapor in Earth's
atmosphere and plays a role in propagating El Niño cycles.
That means studying changes in the Pliocene
atmosphere, the land surface
and most of all the
oceans, which absorb the bulk of planetary
warming.
The projected impacts of a
warming atmosphere and oceans on the Earth's hydrological cycle — dry regions likely becoming drier, while wet ones become more wet — will likely exacerbate this already dire situation.
The next step was see how those factors were influenced by ENSO; while El Niños
and La Niñas are defined by how much
warmer or colder than normal tropical Pacific
ocean waters are, they trigger a cascade of reactions in the
atmosphere that can alter weather patterns around the globe.
But the local
warming is just part of an intricate set of changes in the
ocean and atmosphere across the tropical Pacific, which covers a third of the Earth's circumference.
The area boasts the world's
warmest ocean temperatures
and vents massive volumes of
warm gases from the surface high into the
atmosphere, which may shape global climate
and air chemistry enough to impact billions of people worldwide.
The team chose the specific area examined in the study because it is Earth's
warmest open
ocean region
and a primary source of heat
and water vapor to the
atmosphere.
Climate modeling shows that the trends of
warming ocean temperatures, stronger winds
and increasingly strong upwelling events are expected to continue in the coming years as carbon dioxide concentrations in the
atmosphere increase.
As the
atmosphere warms, heat is transferred to the
oceans, which causes water expansion
and rising sea levels.
Scientific research suggests that global
warming causes heavier rainfall because a hotter
atmosphere can hold more moisture
and warmer oceans evaporate faster feeding the
atmosphere with more moisture.
But the models also suggest that the scheme could go too far: Adding excess sulfur could increase ice in Antarctica, «overcompensating» for
warming, says Rasch, which could affect ecosystems
and the global
ocean -
atmosphere system in a myriad of ways that scientists haven't studied.
In this sense, the
ocean has acted as a buffer to slow down the greenhouse gas accumulation in the
atmosphere and, thus, global
warming.
The list is long
and familiar: too much carbon dioxide
warming the
atmosphere and acidifying the
ocean; too much land being cleared, leading to deforestation
and desertification; overfishing causing crashes in one stock after another;
and habitat destruction reducing biodiversity so drastically that some consider a sixth mass extinction to be under way.
A study examined three different factors:
warmer - than - usual surface
atmosphere conditions (related to global
warming); sea - ice thinning prior to the melting season (also related to global
warming);
and an August storm that passed over the Arctic, stirring up the
ocean, fracturing the sea ice
and sending it southward to
warmer climes.
Understanding how carbon flows between land, air
and water is key to predicting how much greenhouse gas emissions the earth,
atmosphere and ocean can tolerate over a given time period to keep global
warming and climate change at thresholds considered tolerable.
Prevailing scientific wisdom asserts that the deceleration of circulation diminishes the
ocean's ability to absorb anthropogenic CO2 from the
atmosphere as surface waters
warm and become saturated with CO2.
«Loss of oxygen in the
ocean is one of the serious side effects of a
warming atmosphere,
and a major threat to marine life,» said NCAR scientist Matthew Long, lead author of the study.
And the
warming of the upper 2 kilometers of the world
ocean — a huge heat sink relative to the
atmosphere — continued apace through the 2000s.
A detailed, long - term
ocean temperature record derived from corals on Christmas Island in Kiribati
and other islands in the tropical Pacific shows that the extreme warmth of recent El Niño events reflects not just the natural
ocean -
atmosphere cycle but a new factor: global
warming caused by human activity.
After it reaches streams
and oceans, nitrogen molecules contribute to algal blooms
and return to the air to
warm the
atmosphere and deplete stratospheric ozone.
El Niño — a
warming of tropical Pacific
Ocean waters that changes weather patterns across the globe — causes forests to dry out as rainfall patterns shift,
and the occasional unusually strong «super» El Niños, like the current one, have a bigger effect on CO2 levels in the
atmosphere.
Some scientists are linking the phenomenon to
warmer waters
and ocean acidification caused by high levels of carbon dioxide in the
atmosphere.
Only this time, the
ocean is already much
warmer and most importantly, the
atmosphere seems to have finally gotten the memo, with the trade winds weakening.
While the planet's surface didn't
warm as fast, vast amounts of heat energy continued to accumulate in the
oceans and with the switch in the PDO, some of this energy could now spill back into the
atmosphere.
It seems that the
oceans have absorbed much heat over the summer but have relased it into the
atmosphere which has caused the
ocean to freeze quickly
and oddly even though the
atmosphere is
warmer than usual.
Glacial melt
and ocean warming, etc., result from, but take longer than, the
warming in the
atmosphere caused by the increased CO2.
Although the evidence was subsequently contested, some single - celled microbial life lacking a nucleus that segregates their internal DNA or RNA («prokaryotes») from the surrounding cytoplasm may have flourished in darkness within cracks in Earth's seafloor crust
and around deep,
warm or boiling hot
ocean springs (hydrothermal or volcanic vents, such as at Lost City or at black smokers) without a need for light or free oxygen in the
oceans or
atmosphere.
They are seen in
warming of the
oceans, the land surface,
and the lower
atmosphere.
According to Dr. Kevin Trenberth at NCAR in Boulder, Colo., an increase in water vapor floating overhead, triggered by
warming of the
atmosphere and oceans, is already loading the dice.
The observed fact that temperatures increases slower over the
oceans than over land demonstrates that the large heat capacity of the
ocean tries to hold back the
warming of the air over the
ocean and produces a delay at the surface but nevertheless the
atmosphere responds quit rapidly to increasing greenhouse gases.
When all the heat accumulating in the
oceans,
warming the land
and atmosphere and melting ice is tallied up, we see that global
warming is still happening.