Sentences with phrase «in global cloudiness»
The Earthshine project shows that the solar induced reduction in global cloudiness did not reverse until about 2000 but we see that the highest level of ocean alkalinity was around 1988.
https://wattsupwiththat.com/
From 1988 to 1998 there would have been a complex interaction between the ENSO cycle and the amount of sunshine entering the oceans from changes in global cloudiness.
Thus there is a back and forth in global cloudiness as the Sun's activity level changes over the decades and centuries — such as during the period covering the Medieval Warm Period, the Little Ice Age, and the current warm period — through latitudinal shifting of the jet stream tracks and permanent climate zones.
The changes in both satellite derived and measured surface insolation data are also in line with changes in global cloudiness provided by the International Satellite Cloud Climatology Project (ISCCP), which show an increase until the late 1980s and a decrease thereafter, on the order of 5 % from the late 1980s to 2002.
That allows latitudinal sliding of the jets and climate zones below the tropopause leading to changes in global cloudiness and albedo with alters the amount of energy getting into the oceans.»
Not exact matches
In addition to global evapotranspiration trends, they examined vegetation greenness and general climate data including temperature, precipitation and cloudiness.
He said: «Tropical glaciers are the canaries in the coalmine for our global climate system, as they integrate and respond to most of the key climatological variables — temperature, precipitation, cloudiness, humidity and radiation.»
Your earlier # 182 was equally disconcerting where you quoted Norris and Slingo (2009) saying «At present, it is not known whether changes in cloudiness will exacerbate, mitigate, or have little effect on the increasing global surface temperature caused by anthropogenic greenhouse radiative forcing.»
By analogy, a warmer world wouldn't be rainier (or cloudier); it's an imperfect analogy, because rain isn't absolutely correlated with cloudiness, and lateral transport of energy by ocean, air, and latent heat currents in and out of the E & W Pacific Ocean areas won't scale to global warming
The figures showing a strong correlation between low cloudiness and GCRs was also the high - point of a television climate - denier polemic shown last night on Channel 4 here in the UK, entitled The Great Global Warming Swindle.
The resulting reduction in cloudiness, especially of low - altitude clouds, may be a significant factor in the global warming Earth has undergone during the last century.»
Thus it appears that, provided further satellite cloud data confirms the cosmic ray flux low cloud seeding hypothesis, and no other factors were involved over the past 150 years (e.g., variability of other cloud layers) then there is a potential for solar activity induced changes in cloudiness and irradiance to account for a significant part of the global warming experienced during the 20th century, with the possible exception of the last two decades.
They think that it's a change in humidity or cloudiness, but point out that even that could be part of the remote impact of a global climate change signal.
Consequently, as they say slightly earlier in the abstract: «At present, it is not known whether changes in cloudiness will exacerbate, mitigate, or have little effect on the increasing global surface temperature caused by anthropogenic greenhouse radiative forcing.»
I would therefore argue that for the global mean the well - mixed GHGs and the counterbalancing reflecitve aerosol effects are «first - order» — without GHGs there is no appreciable warming signal, and without the aerosols, the warming from GHGs is excessive and important changes in the diurnal cycle and cloudiness are not captured.
«Cloudiness as a Global Climate Feedback Mechanism: The Effects of Radiation Balance and Surface Temperature of Variations in Cloudiness.»
Basically an active sun reduces global cloudiness to allow more solar energy into the oceans which skews ENSO in favour of stronger El Ninos relative to La Ninas.
The physical effects are seen in changes of rainfall, cloudiness, wind - strength and temperature, which are customarily lumped together in the misleading phrase «global warming».
Murry Salby who is suggesting that ocean and soil moisture data shows that the observed rise in atmospheric CO2 might well be entirely from natural causes and Roy Spencer who suggests that variations in oceans and sun affecting global cloudiness make it impossible to verify the sign of the climate system response to more CO2 in the air.
I assume that if there is a global trend in cloudiness that has come to R. Pielke's attention, it would consist of data rather than a general statement.
If the surface pressure distribution begins to shift to a more meridional / equatorward pattern as it did around 2000 then if previously it was in a poleward / zonal mode it is clear that warming will have ceased and cooling has begun due to more global cloudiness and less solar energy getting into the oceans.
An active sun gives more zonal jets and / or more poleward climate zones with less global cloudiness and more energy into the oceans for gradually strengthening El Ninos as compared to La Ninas and a gradual rise in global tropospheric temperatures.
Could you contrast and compare the recent global trends in absolute humidity, precipitation and cloudiness in order to support or reject your implied position that there is no water vapor feedback.
Less strong El Ninos since 1998 have helped to flatten the decline in alkalinity but we can see that the decline remains in progress due to increased global cloudiness at a time of a less active sun and less sunshine into the oceans.
It is a given that the existing models do not fully incorporate data or mechanisms involving cloudiness or global albedo (reflectivity) variations or variations in the speed of the hydrological cycle and that the variability in the temperatures of the ocean surfaces and the overall ocean energy content are barely understood and wholly inadequately quantified in the infant attempts at coupled ocean / atmosphere models.
Lastly, there is a latitudinal variation in the cloud cover, such that around 20 ° N there are regions with 0.10 less cloudiness than the global mean.
He said: «Tropical glaciers are the canaries in the coalmine for our global climate system, as they integrate and respond to most of the key climatological variables — temperature, precipitation, cloudiness, humidity and radiation.»
Mike, I have long felt that a decrease in cloudiness better explains such things as glacier retreat than the small increase in global average temperature.