The amount of
planetary warming for a doubling of CO2 is called the climate sensitivity, which scientists have estimated is between 2 ° and 4.5 °C.
Not exact matches
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?
Despite national and international efforts to reduce anthropogenic emissions, growing concentrations of atmospheric carbon dioxide will yield
planetary warming and associated impacts
for the foreseeable future.
Characterizing K2 Candidate
Planetary Systems Orbiting Low - Mass Stars III: A High Mass & Low Envelope Fraction
for the
Warm Neptune K2 - 55b
Thus far, Kepler has found 48
planetary candidates in their host star's habitable zone (of which 10 are near Earth - size), but this number is a decrease from the 54 reported in February 2011 only because the Kepler team is now applying a stricter definition of what constitutes a habitable zone around stars to account
for the
warming effect of
planetary atmospheres, which would move such a zone away from the star, outwards in orbital distance resulting in longer orbital periods (NASA news release; and Kepler Press Conference slides — in pdf).
In the current era in which the problems of global
warming can lead to
planetary catastrophe, every city has to have a plan
for adapting to climate change, especially thosesubject toextreme events.
If human - induced global
warming, among other factors such as human - driven pollution and human - forced overpopulation, serve decisively to precipitate the massive extinction of biodiversity, the irreversible degradation of Earth's environment and the reckless dissipation of its resources, so as to make our
planetary home unfit
for life as we know it, then is no one to bear responsibility
for such a colossal wreckage as we could help to perpetrate in these early years of Century XXI?
It is as useful
for global
warming as sending a man (or woman) to mars is
for planetary science.
ENSO merely reflects a state of flux
for the entire
planetary climate system, of which La - Nina cools and El - Nino
warms, but overall the temperature of the atmosphere is
warming.
The argument
for geoengineering goes like this: the world is getting inexorably
warmer; governments show no sign of drastically reducing greenhouse gas emissions, so why not control the
planetary thermostat by finding a way to filter, block, absorb or reflect some of the sunlight hitting the Earth?
It turned out things were far more nuanced (as he later said, «The Earth system may be less responsive in the
warm times than it was in the cold times»), but in a field that had long mainly foreseen smooth curves
for planetary change with rising greenhouse gas levels, the result was a vital focus on the risks of abrupt climate change.
This implies that the CRF levels must have systematically decreased over time, causing a long - term decrease in the low cloud fraction and hence a long - term reduction in the
planetary albedo, that again would be responsible
for the
warming.
The newest paper, in the current issue of Science, «Varying
planetary heat sink led to global -
warming slowdown and acceleration,» argues that the Atlantic not only has shaped the current plateau, but also was responsible
for half of the sharp global
warming at the end of the 20th century.
Consider the quasi-official global goal (codified,
for example, in the Copenhagen Accord) to hold total
planetary warming to 2 °C (Earth surface average) above pre-industrial levels.
If global
warming is really a
planetary emergency, why won't he deliver the same talk
for $ 50,000?
However... this is no surprise, as slow
warming has been the
planetary theme
for 300 years or so.
Ocean
warming: «Assessing recent
warming using instrumentally homogeneous sea surface temperature records» «Tracking ocean heat uptake during the surface
warming hiatus» «A review of global ocean temperature observations: Implications
for ocean heat content estimates and climate change» «Unabated
planetary warming and its ocean structure since 2006»
Variations in how the Earth is tilted and its orbit around the sun make
for a pattern of
planetary warming phases followed by cooling phases across the millennia.
The high reflectivity of this new
planetary layer, the Lucrosphere, will radically incease our planet's albedo, and so compensate
for the loss of reflective Arctic sea ice that threatens to accelerate global
warming.
The key science question
for citizens and their representatives is not whether most recent
warming is man - made but whether climate change, as Al Gore HAS put it, is a «
planetary emergency... that threatens the survival of civilization and the habitability of the Earth.»
The interglacial and the glacial
planetary temperature data shows cycles of
warming and cooling interrupted by very strong «RCEs» (Rickies) Rapid Climatic Change Events (
For example the Younger Dryas abrupt cooling event and the termination of the last interglacial).
«Assessing recent
warming using instrumentally homogeneous sea surface temperature records» «Tracking ocean heat uptake during the surface
warming hiatus» «A review of global ocean temperature observations: Implications
for ocean heat content estimates and climate change» «Unabated
planetary warming and its ocean structure since 2006»
Second, ignore the inconsistencies, and just assume those pesky CO2 molecules are so clever that they can change the trajectory of
planetary temperature trends every few decades, from
warming to cooling, back to
warming, then just «flatline»
for fifteen years or so.
The agreement leaves us on track
for 3 degrees of
warming and
planetary emergency.
Easterbrook's predictions were «right on the money» seven years before Al Gore and the United Nation's Intergovernmental Panel on Climate Change (IPCC) shared the 2007 Nobel Peace Prize
for warning that the Earth was facing catastrophic
warming caused by rising levels of carbon dioxide, which Gore called a «
planetary emergency.»
Then,
for the benefit of the lay reader, who would not be expected to understand the clear (to a competent physical scientist) implication of this simply - stated fact, I wrote: «This in fact indicates that the Venusian atmosphere is heated mainly by incident infrared [not the VISIBLE portion, which is indeed largely reflected, defenders, but INFRARED] radiation from the Sun, WHICH IS NOT REFLECTED BUT ABSORBED [or allowed in to heat the lower atmosphere] by Venus's clouds, rather than by
warming first of the
planetary surface.
They worked out how these proportions would change if the average
planetary temperatures reach 2 °C above the «normal» of the pre-industrial world, and they found that human - induced global
warming could already be responsible
for 18 % of extremes of rain or snow, and 75 % of heatwaves worldwide.
«In fact, 50 % of voters now believe that global
warming is caused primarily by long - term
planetary trends, a high
for the year.
Climate - change skeptics point out that the planet has
warmed and cooled many times before, but the climate window that has allowed
for human life is very narrow, even by the standards of
planetary history.
Moreover, the loss of sea ice would have altered the
planetary albedo, causing the planet to
warm until clouds cover had increased enough
for the radiation balance at the TOA to be restored.
For instance, given the physics of sulphate aerosols in the stratosphere (short wave reflectors, long wave absorbers), it would be surprising if putting in the aerosols seen during the Pinatubo eruption did not reduce the
planetary temperature while
warming the stratosphere in the model.
Projections
for the way in which our planet will be affected by the current trend of rapid
planetary warming are dire.
Instead of publicly expressing their views, a group of parliamentarians said skeptics should parrot the imploding official narrative: The notion that global
warming, which even leading alarmists admit has been on «pause»
for 17 years in defiance of every UN climate model, is caused by human activities and requires
planetary carbon taxes and more government control.
The conclusion: Planting a forest in the United States could cool the Earth
for a few decades, but would lead to
planetary warming in the long term.