Sentences with phrase «decreased volcanic aerosols»

... we strongly support Delworth and Knutson's (2000) contention that this high - latitude warming event represents primarily natural variability within the climate system, rather than being caused primarily by external forcings, whether solar forcing alone (Thejll and Lassen, 2000) or a combination of increasing solar irradiance, increasing anthropogenic trace gases, and decreasing volcanic aerosols.

Not exact matches

While volcanic aerosols cause surface cooling due to decreased shortwave radiation at the surface, they also lead to increased indirect, scattered light at the surface.

Volcanic events and some types of human - made pollution, both of which inject sunlight - reflecting aerosols (i.e., tiny particles) into the atmosphere, lower temperature and are examples of forcings that drive decreases in temperature.

The early 20th saw a relative balance of anthro forcings, CO2 up and aerosol pollution down, natural (volcanic) aerosols decreased (up) and solar increased (up).

Causes, and they are multiple, appear to be: 1) Natural variability of ocean to atmosphere sensible and latent heat flux 2) Modest increase in natural volcanic aerosols 3) Slight decrease in solar output

Although industrial aerosols are decreasing, the climate catastrophists omit to state that volcanic aerosols kill.

That may well include increased or decreased natural dust (for natural or unnatural reasons), and definately volcanic aerosols (note that this factor was increasingly negative in the 40's to 60's) along with man - made aerosols.

Similarly, if global temperatures drop for some reason (for example, a large volcanic eruption dumping massive amounts of aerosols into the air), we should expect to see water vapor concentrations decrease.