Sentences with phrase «overall change in clouds»
Yes, overall change in clouds may be a positive feedback, rather than a negative feedback assumed from simple ideas like more water - > more clouds - > cooling.
http://www.realclimate.org/ Not exact matches
I was interested not so much in the forcing effect of clouds themselves so much as the change in albedo which might result from a change in the overall extent of global cloud cover.
ENSO changes the cloud cover and water vapour amounts and so you would expect it to affect the Top - of - the - atmosphere radiation balance which changes the overall amount of heat in the system.
I know that during the day time the overall change in influx will drop in the presence of clouds, but that at night a cloud will have the opposite effect, increasing influx.
That claim is too simple to be useful, ignoring a) the complex interaction of Boltzmann radiation with the surface, the clouds, the GHGs, and the like, and b) the various regimes in the tropics, each of which modifies and changes the overall energy balance by things like convection and latent heat transfer.
«The overall slow decrease of upwelling SW flux from the mid-1980's until the end of the 1990's and subsequent increase from 2000 onwards appear to caused, primarily, by changes in global cloud cover (although there is a small increase of cloud optical thickness after 2000) and is confirmed by the ERBS measurements.»
The computation, like Callendar's, paid no attention to possible changes in water vapor and clouds, and overall was too crude to convince scientists.
«The overall slow decrease of upwelling SW flux from the mid-1980's until the end of the 1990's and subsequent increase from 2000 onwards appear to caused, primarily, by changes in global cloud cover (although there is a small increase of cloud optical thickness after 2000) and is confirmed by the ERBS measurements... The overall slight rise (relative heating) of global total net flux at TOA between the 1980's and 1990's is confirmed in the tropics by the ERBS measurements and exceeds the estimated climate forcing changes (greenhouse gases and aerosols) for this period.