Quote from jem:
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Nasa says Carbon dioxide cools.
"For the three day period, March 8th through 10th, the thermosphere absorbed 26 billion kWh of energy. Infrared radiation from CO2 and NO, the two most efficient coolants in the thermosphere, re-radiated 95% of that total back into space."
http://science.nasa.gov/science-news/science-at-nasa/2012/22mar_saber/
aerosols...
http://wattsupwiththat.com/2011/05/...ation-via-solar-magnetic-activity-modulation/
With the new results just published in the recognised journal Geophysical Research Letters, scientists have succeeded for the first time in directly observing that the electrically charged particles coming from space and hitting the atmosphere at high speed contribute to creating the aerosols that are the prerequisites for cloud formation.
Clouds, which are drops of water, occur more easily when water vapour in the atmosphere can condense around particles â dust or large clusters of molecules. Researchers have now shown that electrons caused by cosmic radiation can create small particles that can grow in the atmosphere into such cloud condensation nuclei. This is interesting in the light of the controversial theory proposed by Henrik Svensmark, DTU Space, who postulates a correlation between solar activity and the Earthâs temperature: when the Sunâs activity increases â and thereby magnetic fields (seen as more sunspots) â more of the cosmic particles deflect and fewer therefore reach the Earthâs atmosphere, whereupon there is less cloud formation and the temperature rises on the Earthâs surface. And conversely: when the magnetic field is weakened, the temperature drops. (Graphics: DTU Space)
The more cloud cover occurring around the world, the lower the global temperature â and vice versa when there are fewer clouds. The number of particles from space vary from year to year â partly controlled by solar activity. An understanding of the impact of cosmic particles â consisting of electrons, protons and other charged particles â on cloud formation and thereby the number of clouds, is therefore very important as regards climate models.
With the researchersâ new knowledge, it is now clear that here is a correlation between the Sunâs varying activity and the formation of aerosols in the Earthâs atmosphere. Initially, the researchers have demonstrated that there is a correlation, and they will therefore now carry out systematic measurements and modellings to determine how important it is to the climate