Sentences with phrase «feedback climate sensitivity allows»

This empirical fast - feedback climate sensitivity allows water vapor, clouds, aerosols, sea ice, and all other fast feedbacks that exist in the real world to respond naturally to global climate change.

Not exact matches

This empirical climate sensitivity corresponds to the Charney (1979) definition of climate sensitivity, in which «fast feedback» processes are allowed to operate, but long - lived atmospheric gases, ice sheet area, land area and vegetation cover are fixed forcings.

Thus, for a well - coupled convecting troposphere, one defines the climate sensitivity (in the absence of feedback) as 1 / [d (SB) / dT] = 1 / (4 * sigma * T ^ 3), where T in this case is actually the emission temperature of the planet where infrared radiation leaks out to space (analogous to the photosphere of the sun, where eventually the outer layers of the sun become optically thin to visible radiation, and allow that energy to escape to space), not the surface temperature.

The complexity and non-linearity of the climate system does not allow such a simple statistical derivation of climate sensitivity without a physical understanding of the key processes and feedbacks.

Thus there is a real hypothetical experiment that would allow measuring the climate forcing due to doubling the CO2 concentration, but nothing similar can be imagined for the no - feedback climate sensitivity.

There are multiple, conflicting lines of evidence in climate sensitivity, and nothing has really ruled out the possibility of a tail that extends over 4C for a doubling, and that's without even allowing for some kind of carbon cycle feedback that causes land to turn from a sink to a source of CO2.

The diagnosis of global radiative feedbacks allows better understanding of the spread of equilibrium climate sensitivity estimates among current GCMs.

As a complement to the Charney climate sensitivity, let us derive the climate sensitivity that applies if these slow feedbacks are allowed to operate: we call this the «long - term» climate sensitivity.

The 28 - year - plus time series of total solar irradiance, total ozone, and outgoing longwave radiation allows researchers to address unique aspects of climate change, climate sensitivity, and cloud feedbacks; however, questions remain.

I am particularly grateful to Professors David Douglass and Robert Knox for having patiently answered many questions over several weeks, and for having allowed me to present a seminar on some of these ideas to a challenging audience in the Physics Faculty at Rochester University, New York; to Dr. David Evans for his assistance with temperature feedbacks; to Professor Felix Fitzroy of the University of St. Andrews for some vigorous discussions; to Professor Larry Gould and Dr. Walter Harrison for having given me the opportunity to present some of the data and conclusions on radiative transfer and climate sensitivity at a kindly - received public lecture at Hartford University, Connecticut; to Dr. Joanna Haigh of Imperial College, London, for having supplied a crucial piece of the argument; to Professor Richard Lindzen of the Massachusetts Institute of Technology for his lecture - notes and advice on the implications of the absence of the tropical mid-troposphere «hot - spot» for climate sensitivity; to Dr. Willie Soon of the Harvard Center for Astrophysics for having given much useful advice and for having traced several papers that were not easily obtained; and to Dr. Roy Spencer of the University of Alabama at Huntsville for having answered several questions in connection with satellite data.