His fascination with the 1970s is pointless. A wide majority of scientists at that time thought the world was going to get warmer. In the early 1970s the winters were usually bitterly cold. The warming trend since then is .16C per decade, and the 9-month trend is very similar to 1997 -1998.
Comment on Contradiction on emotional bias in the climate domain by JCH
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Comment on Bjorn Stevens in the cross-fire by ...and Then There's Physics
No that’s the argument I was trying to make. It didnt hold up very well.
At this point seeing Stevens note to Nic, the argument collapses entirely.
Fair enough, that’s all I was really trying to comment on anyway.
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Comment on Puzzle in the Atlantic by mosomoso
Peak beard. I predicted it but was laughed at: millions of Northern Hemisphere hipsters shaving for the approaching summer.
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Comment on Puzzle in the Atlantic by David Springer
It’s boiling water. The laws of physics have been suspended so that all global warming for the past 18 years which spread out evenly through the ocean basin (hidden) has concentrated itself on the Atlantic surface like a swirl of icing on a cake. My baker has a cake modeling program I’ll enter the data and see what it produces.
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Comment on Puzzle in the Atlantic by Peter Davies
This is a video that I found which is of course a much close look than the pictures taken by the airline pilot.
The lines of foam appear to be relatively white prior to becoming dingy looking when mixed with sand and debris.
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Comment on Week in review – science edition by matthewrmarler
Pat Cassen: Perhaps you mean that the atmosphere is generally not saturated, as this figure illustrates:
Measurements of water vapor in the atmosphere.
But the figure also shows that, minor adjustments aside, C-C represents quite accurately the saturation envelope (and that saturation does indeed occur).
Here is what I wrote: The actual vapor content of air in the atmosphere is almost never equal to the amount calculated using the C-C approximation. And measured water vapor pressure is almost never equal to the saturation water vapor pressure calculated from the C-C approximation.
To back up even further: when I first mentioned that the amount of water vapor can not be known accurately, BPL directed my attention to the Calusius-Clapeyron, evidently not knowing that it is an approximation to the rare case of saturation.
As the sun rises in the midsummer central Pacific or US Midwest, and the surface water vaporizes, rises to the mid-upper troposphere, condenses to form rain clouds and rain — no model accurately models the water vapor at any place or any time. In quiescent conditions with little airflow or cloud cover, there is a linear relationship between model total column vapor and measured optical thickness — that is the closest I have seen. That isn’t so useful in the usual conditions farther from equilibrium.
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Comment on Puzzle in the Atlantic by Peter Davies
Sorry wrong link.
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Comment on Puzzle in the Atlantic by omanuel
Thank you for sharing these photographs from the air. Many years ago I used to look for evidence of impact craters on land.
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Comment on Week in review – science edition by matthewrmarler
Jim D: Seems that would require more energy to produce a given evaporation, so it may underdo evaporation by 3%. If the other factors like wind speed and wave effects were known to within 3%, this would be an issue. As it is, I doubt that the wind is accurate to 3%, especially with poorly resolved hurricanes.
Indeed, you would be hard-pressed to show that anything is known accurately enough to calculate the sensitivity of the dynamic climate to doubling of CO2 concentration. How exactly that shows that the C-C relation is accurate enough would take some more work.
You do not actually know any of this, do you Jim D? You make it up as you go along?
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Comment on Week in review – science edition by curryja
thanks for this link
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Comment on Week in review – science edition by JCH
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Comment on Puzzle in the Atlantic by mosomoso
Yamba, to the north of where I live, is long famous for its “cappucino coast” phenomenon. I’m told they’ve copped it in the last few days, after our chaotic east coast low further south. Here’s the Yamba surf club during what I think was the 2007 Big Froth.
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Comment on Week in review – science edition by matthewrmarler
Jim D: <i> I heard that it is one of the dangers of rapid warming that the ocean develops a warm surface layer that just can’t sink.</i>
What is the increase in the surface water evaporation rate, and how is it computed?
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Comment on Week in review – science edition by Curious George
Jim, as I said earlier, I am not concerned about the rate of evaporation. I am concerned about the energy (latent heat) of 1 ton of evaporated water vapor. I don’t care if it has evaporated in one hour or in 8 hours; it carries an energy – called latent heat – which it releases again – when condensing. A fifth grade physics. If it is to complex for you to understand; I’ll be glad to elucidate.
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Comment on Puzzle in the Atlantic by Puzzle in the Atlantic | Enjeux énergies et environnement
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Comment on Week in review – science edition by Jim D
matthewmarler, the surface air would warm just as much, so the evaporation would not increase or decrease just from this.
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Comment on Week in review – science edition by Jim D
If it releases it around 0 C, the latent heat is accurate. If it is colder, it would be too little. On average the release would not be so far from 0 C. Besides, I don’t think GCMs can get rainfall/condensation accurate to within 3%, so this issue is moot until they do. Check with Gavin if GCMs get rainfall within 3%.
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Comment on Week in review – science edition by Jim D
Certainly hard to get the precision required to make this 3% an important issue. It would be a great situation to be in if the GCMs were only off by 3% and this corrected it, but more likely it is a red herring.
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Comment on Week in review – science edition by ristvan
On SLR, see essay PseudoPrecision. Check the latest satellite design spec (cited in the essay). Which produces this up/down variance. GIGO.
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Comment on Week in review – science edition by Ragnaar
Another comment on the blob:
I’ve found little on warm PDO or cool PDO jets. So going with a La Nina jet, there seems to have been some locking into the lower map configuration. It shows the High in about the right place for the blob. The nice meander may have something the do with the Rocky Mountains that is geographical features. I think the polar jet will have to curtail its meandering ways with a PDO shift. I am open to the fact that this could happen quickly but with some tilt of the PETG in the correct direction. I’ll go out on a limb and suggest, the tilt of the PETG crosses a threshold where on one side there are predominant meanders.
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