86

The 1930 measurement was taken incorrectly. The claim was also made in domestic newspapers at the time, including L'Express du Midi: 50° AU SOLEIL A SAINT-ETIENNE Saint-Etienne, 27 août. Le thermomètre a marqué aujourd'hui 50° au soleil. Mme Guilly, 40 ans, est morte frappée d'insolation. A rough translation of this is 50° IN THE SUN IN SAINT-ETIENNE ...


55

Only when the snow is "wet", not if the snow is powdery. As this January 1910 Watson Wagon advertisement says: The popularity of the Watson continues to grow like a snowball rolling down hill on a wet day. This can even happen naturally as explained in the US National Weather Service article Snow Rollers Observed Across Central Illinois (Spring 2003) ...


34

I would have to say, yes, it does, but as evidence, one looks not at the scenario described of rolling a snowball down a hill. Instead, in a snowy area, after a significant snowfall and, especially, if it leads to a cancellation of school, go outside and observe children and/or adults building snowmen/women. How do they build the "snowballs" that are the ...


13

The conditions required for contrail persistence are ice-supersaturation. This means that the air is cold and humid enough that the water vapor will directly "condense" out of the air in the form of ice (the process is called "deposition"). Ice supersaturation is around 60-70% of the normally reported relative humidity, which applies to water1. However, and ...


12

As devsolar points out, -70 degrees (F or C) combined with moderate wind speeds is certainly possible in some ice cap climates, such as Vostok station and the South Pole. Click the following link to see recorded temperatures and wind speeds for the latter in August of this year. I should also point out that there are Youtube videos available of researchers ...


11

More or less, yes. Many news sources are incomplete. For the most direct account, see this report by the Norwegian Broadcasting Corporation. This is a normally quite reliable news source. Some key elements missing in some reports. Firstly: they were trapped due to cormorants. Secondly: there is a concrete wall under the surface of the water. Quote and ...


10

Blogger Randal Olson reproduced a chart from Nate Silver's The Signal and the Noise which in turn has based on data from ForecastWatch. Ignore the orange line; it is irrelevant for this discussion. (Just for illustration: It is based on a similar idea of predicting that it will be hot on your birthday, because it has been hot on your previous birthdays.)...


8

Doubling CO2 will cause approximately 2-4°C increase in annual mean surface air temperature. That means that Svensmark's claim that the increase would be less than this is false. The last two assessment reports from the Intergovernmental Panel on Climate Change (IPCC) agree that the temperature increase of doubling CO2 is something around the alleged. ...


7

Can they form near the the equator? Yes. Cyclone Agni from 2004 is probably the best example of this: according to the India Meteorological Department, it was 1.5 degrees north of the equator when it became a tropical cyclone, and before it reached that strength, the circulation center may have crossed the equator twice. Is it normal? No. There are any ...


5

This is false. The origin of this claim is this video which shows water coming up from the ground not the sky. Snopes has an article debunking it. The video has been circulating online since at least June 2015, when it was shared under the title "Sources of water, water sources of well digging." While that version of the video did not include ...


3

Short answer: Maybe yes. Long answer: There's still a lack of papers and data making a clear correlation between global warming and the frequency and strength of storms. There's one study suggests maximal hurricane winds to be increasing in the last thirty years as well they process of formation is faster. But as far I can find there's not much increase ...


3

Yes, they do have less snow ...because large bodies of water do affect the climate in its immediate surroundings. Lakes, effects on climate How Do Large Bodies of Water Affect the Climate of the Coastal Areas? Large bodies of water act as heat reservoirs in winter (and heat sinks in summer). This means that the onset of winter will be later in the year ...


2

It is doubtful that there is much correlation. Cows lie down too often for other reasons to be a useful predictor of rain. Cows lie down a lot Cows are ruminants and lie down to chew their cud. They also lie down for other reasons including sleep. Cows lie down perhaps up to sixteen times a day. At any given time there is a 50% chance a cow will be lying ...


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