At the excellent Curious Wavefunction blog of Ash Jogalekar, there’s an article (posted last year) about Freeman Dyson, who is 94 today.
He disapproves of faith in computer models and of the zealous dogmatism exhibited by some climate change activists, and both these points are extremely well taken. Ultimately Dyson is saying something simple; that science progresses only when there is a critical mass of skeptics challenging the status quo
Tales of doom and gloom about polar bears reflect what some people think might happen in the future, not what is happening right now. Currently, polar bears are doing just fine despite the low summer sea ice coverage they’ve experienced since 2007 (Crockford 2017a; York et al. 2016). In other words, there has been no global population decline as predicted: officially, the numbers were 22,000-31,000 (or 26,500 average) in 2015 (Wiig et al. 2015) but about 28,500 when estimates published since then are included (Aars et al. 2017; Dyck et al. 2017; Matishov et al. 2014; SWG 2016), up from about 22,500 in 2005).
Does record breaking winter cold cast doubt on climate predictions of milder winters? Could ANY weather or climate shift cast doubt on the dominance of that wicked little trace molecule? Apparently not, according to leading climate explainers.
Last week, Anthony highlighted a study by Svensmark, Shaviv et al. in a post entitled New paper: The missing link between cosmic rays, clouds, and climate change on Earth. While some were enthusiastic about their claims, Leif Svalgaard and I were much more restrained in our opinions (…)
Reflecting upon my previous post, Where The Temperature Rules The Sun, I realized that while it was valid, it was just about temperature controlling downwelling solar energy via cloud variations. However, it didn’t cover total energy input to the surface. The total energy absorbed by the surface is the sum of the net solar energy (surface downwelling solar minus surface reflections) plus the downwelling longwave infrared, or DWIR. This is the total energy that is absorbed by and actually heats the surface.
For the first time scientists have directly observed living bacteria in polar ice and snow — an environment once considered sterile. “As microbial activity and its influence on its local environment has never been taken into account when looking at ice-core gas samples it could provide a moderate source of error in climate history interpretations.”
(…)In conclusion, a mechanism by which ions condense their mass onto small aerosols and thereby increase the growth rate of the aerosols, has been formulated theoretically and shown to be in good agreement with extensive experiments. The mechanism of ion-induced condensation may be relevant in the Earth’s atmosphere under pristine conditions, and able to influence the formation of CCN. It is conjectured that this mechanism could be the explanation for the observed correlations between past climate variations and cosmic rays, modulated by either solar activity or supernova activity in the solar neighborhood on very long time scales. The theory of ion-induced condensation should be incorporated into global aerosol models, to fully test the atmospheric implications.
The idea of a significant solar influence on climate change via cloud cover produced by cosmic rays has been proposed many times but it lacked conclusive experimental evidence as well as a detailed theoretical framework. Some have labelled the idea controversial with, at best, a weak effect. The principle is that cosmic rays – high-energy particles that traverse the galaxy from supernovae – knock electrons out of air molecules. This produces ions – electrically positive and negative molecules in the atmosphere. The ions help aerosols – clusters of mainly sulphuric acid and water molecules – to form and become stable against evaporation – a process is called nucleation. The problem was that small aerosols need to grow nearly a million times in mass in order to have an effect on cloud formation. Until now, it was not known how this could happen.
Scientists have quantified the relationship between natural sources of particles in the atmosphere and climate change. Their research shows that the cooling effect of natural atmospheric particles is greater during warmer years and could therefore slightly reduce the amount that temperatures rise as a result of climate change.Share:
We’re told that climate change caused or intensified California’s wildfires — and that such fires are getting worse. As usual for such scary stories, these claims are only weakly supported by science — except for the ones that are outright fabrications. See what scientists say and decide for yourself.
Essay by Dr. Susan Crockford (republished from her website https://polarbearscience.com )on Retraction request to Bioscience: FOIA emails document another harsh criticism of Amstrup’s 2007 polar bear model
Today I sent a letter to the editors of the journal Bioscience requesting retraction of the shoddy and malicious paper by Harvey et al. (Internet blogs, polar bears, and climate-change denial by proxy) published online last week.
The letter reveals information about the workings of the polar bear expert inner circle not known before now, so grab your popcorn.
From the ‘scare tactical modeling’ department comes this press release today, which has been circulating to news media until the embargo lifted this morning. You’ll see all sorts of caterwauling from the usual media outlets about how global warming is even worse now, and the future looks grim.
(…) Petroleum geologists tend to be sedimentary geologists and sedimentary geology is essentially a combination of paleogeography and paleoclimatology. Depositional environments are defined by physical geography and climate. We literally do practice in a different world, the past. Geologists intuitively see Earth processes as cyclical and also tend to look at things from the perspective of “deep time.” For those of us working the Gulf of Mexico, we “go to work” in a world defined by glacioeustatic and halokinetic processes and, quite frankly, most of us don’t see anything anomalous in recent climate changes.
La géologie, une science plus que passionnante … et diverse