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Now we are getting to the long-awaited fundamental debate. Henrik Svensmark, Nir Shaviv and others have identified the mechanism by which solar interaction with galactic cosmic rays (GCR) influences Earth's climate. Their research strikes at the core of AGW orthodoxy, and will surely provoke a vigorous debate. We may be witnessing a paradigm-shifting moment as described in Thomas Kuhn's The Structure of Scientific Revolutions.
New paper: The missing link between cosmic rays, clouds, and climate change on Earth
Last week I hinted at this upcoming paper, which was embargoed until this morning. I noted then something Dr. Roy Spencer said in his book about clouds: The Great Global Warming Blunder: How Mother Nature Fooled the World’s Top Climate Scientists and how this new paper could be the “holy grail” of climate science, if it is…
Continue reading →
Today, we have news of something that modulates cloud cover in a new paper by Henrik Svensmark in Nature Communications.
PRESS RELEASE: DTU Space at the Technical University of Denmark
A breakthrough in the understanding of how cosmic rays from supernovae can influence Earth´s cloud cover and thereby climate is published today in the journal Nature Communications. The study reveals how atmospheric ions, produced by the energetic cosmic rays raining down through the atmosphere, helps the growth and formation of cloud condensation nuclei – the seeds necessary for forming clouds in the atmosphere. When the ionization in the atmosphere changes, the number of cloud condensation nuclei changes affecting the properties of clouds. More cloud condensation nuclei mean more clouds and a colder climate, and vice versa. Since clouds are essential for the amount of Solar energy reaching the surface of Earth the implications can be significant for our understanding of why climate has varied in the past and also for a future climate changes.
Cloud condensation nuclei can be formed by the growth of small molecular clusters called aerosols. It has until now been assumed that additional small aerosols would not grow and become cloud condensation nuclei, since no mechanism was known to achieve this. The new results reveal, both theoretically and experimentally, how interactions between ions and aerosols can accelerate the growth by adding material to the small aerosols and thereby help them survive to become cloud condensation nuclei. It gives a physical foundation to the large body of empirical evidence showing that Solar activity plays a role in variations in Earth’s climate. For example, the Medieval Warm Period around year 1000 AD and the cold period in the Little Ice Age 1300-1900 AD both fits with changes in Solar activity.
Full journal reference
H. Svensmark, M.B. Enghoff, N. Shaviv and J. Svensmark, Increased ionization supports growth of aerosols into cloud condensation nuclei, Nature Communications DOI: 10.1038/s41467-017-02082-2
The paper is here http://www.nature.com/ncomms
New paper: The missing link between cosmic rays, clouds, and climate change on Earth
Last week I hinted at this upcoming paper, which was embargoed until this morning. I noted then something Dr. Roy Spencer said in his book about clouds: The Great Global Warming Blunder: How Mother Nature Fooled the World’s Top Climate Scientists and how this new paper could be the “holy grail” of climate science, if it is…
Continue reading →
Today, we have news of something that modulates cloud cover in a new paper by Henrik Svensmark in Nature Communications.
PRESS RELEASE: DTU Space at the Technical University of Denmark
A breakthrough in the understanding of how cosmic rays from supernovae can influence Earth´s cloud cover and thereby climate is published today in the journal Nature Communications. The study reveals how atmospheric ions, produced by the energetic cosmic rays raining down through the atmosphere, helps the growth and formation of cloud condensation nuclei – the seeds necessary for forming clouds in the atmosphere. When the ionization in the atmosphere changes, the number of cloud condensation nuclei changes affecting the properties of clouds. More cloud condensation nuclei mean more clouds and a colder climate, and vice versa. Since clouds are essential for the amount of Solar energy reaching the surface of Earth the implications can be significant for our understanding of why climate has varied in the past and also for a future climate changes.
Cloud condensation nuclei can be formed by the growth of small molecular clusters called aerosols. It has until now been assumed that additional small aerosols would not grow and become cloud condensation nuclei, since no mechanism was known to achieve this. The new results reveal, both theoretically and experimentally, how interactions between ions and aerosols can accelerate the growth by adding material to the small aerosols and thereby help them survive to become cloud condensation nuclei. It gives a physical foundation to the large body of empirical evidence showing that Solar activity plays a role in variations in Earth’s climate. For example, the Medieval Warm Period around year 1000 AD and the cold period in the Little Ice Age 1300-1900 AD both fits with changes in Solar activity.
“Finally we have the last piece of the puzzle explaining how particles from space affect climate on Earth. It gives an understanding of how changes caused by Solar activity or by super nova activity can change climate.”
says Henrik Svensmark, from DTU Space at the Technical University of Denmark, lead author of the study. Co- authors are senior researcher Martin Bødker Enghoff (DTU Space), Professor Nir Shaviv (Hebrew University of Jerusalem), and Jacob Svensmark, (University of Copenhagen).
Full journal reference
H. Svensmark, M.B. Enghoff, N. Shaviv and J. Svensmark, Increased ionization supports growth of aerosols into cloud condensation nuclei, Nature Communications DOI: 10.1038/s41467-017-02082-2
The paper is here http://www.nature.com/ncomms