Paper finds tiny changes in solar activity explain N Hemisphere temps over past millennium — Paper published in Geophysical Research Letters
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New book finds at least 63% of global warming was due to the Sun — ‘Authors predict a decrease in solar activity during 21st century will result in global cooling of 0.64ºC over next 100 years’
Therefore, out of the total increase in global temperature of ~ 0.8ºC during the past 400 years, less than 0.3ºC may be of non-solar origin, in agreement with previous results.” The authors predict a decrease in solar activity during the 21st century will result in global cooling of 0.64ºC over the next 100 years.
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New paper predicts CO2 fertilization will greatly improve plant productivity by 40-60% — Paper published in Biogeosciences
The study derives ‘a probabilistic prediction for globally averaged strength of CO2 fertilization in nature, for period 1850 to 2000 AD, implicitly net of other limiting factors such as nutrient availability” & predicts, ‘the increase in gross primary productivity (GPP) in response to a doubling of CO2 from pre-industrial values is very likely (90% confidence) to exceed 20%, with a most likely value of 40–60%’
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New paper finds another mechanism by which the Sun controls climate — Paper published today in The Holocene
The paper also finds a link to the N. Atlantic Oscillation, which in turn has been linked to solar activity.
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New study says extinction fears are ‘alarmist’ — Journal Science
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New paper says Amazon trees will tolerate IPCC projected temperature in 2100 — New paper published in Ecology & Evolution
The paper adds to several other peer-reviewed publications showing that alarmist claims of ecosystem collapse or drying up of the Amazon amount to fear mongering, falsehoods, and exaggerations.
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New paper finds China was warmer than the present 1100 & 1700 years ago — Forthcoming paper in Climate of the Past
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New paper finds Antarctic sea ice has markedly increased over past 7000 years — Forthcoming paper in Climate of the Past
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New paper finds climate models offer little beyond simulating a random walk — Paper published in the Journal of Climate
Translation: state-of-the-art climate models that simulate the ocean and atmosphere together [called ‘coupled models’] offer little predictive ability beyond simulating a random walk [also called ‘red noise’] over periods of 10 or more years’
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Settled science: New paper questions usefulness of core IPCC radiative forcing concept — Published in the Journal of Climate
Study ‘finds the core IPCC concept of net radiative forcing at the tropopause is ‘not a useful concept on short timescales because it fails to distinguish between energy absorbed within the [atmosphere itself] and energy absorbed at the [Earth] surface.’ According to the authors, ‘This work begs the question: on what timescales and regimes is the radiative forcing at the tropopause a useful concept and when is the response of the system contingent on the vertical structure of the atmospheric forcing?’
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