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lee

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Re: Thermometer
Reply #240 - Aug 27^th, 2017 at 12:46pm

Jovial Monk wrote on Aug 27^th, 2017 at 12:25pm:

Are the distributions normal? They are bellshaped, except not quite a bell shape is it? Are the distributions skewed?

None of this matters.

So it doesn't matter if the data is normally distributed for Australian temperatures? OK then. Let's just use the east coast of Australia. That should work. What could possibly go wrong? Grin

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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: Thermometer Reply #241 - Aug 27^th, 2017 at 12:46pm I NEVER SAID THEY SHOWED AGW, CLOWN!
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Jovial Monk

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Re: Thermometer
Reply #242 - Aug 27^th, 2017 at 12:48pm

lee wrote on Aug 27^th, 2017 at 12:46pm:

Jovial Monk wrote on Aug 27^th, 2017 at 12:25pm:

Are the distributions normal? They are bellshaped, except not quite a bell shape is it? Are the distributions skewed?

None of this matters.

So it doesn't matter if the data is normally distributed for Australian temperatures? OK then. Let's just use the east coast of Australia. That should work. What could possibly go wrong? Grin

There is a change between the distributions in each set. I explained what the peak declining/increasing meant, more/less dispersion.

Now I ask for meaning.

Anyone?

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lee Gold Member Offline Australian Politics Posts: 21546 Gender:	Re: Thermometer Reply #243 - Aug 27^th, 2017 at 12:55pm I see you haven't commented on BoM changing Stevenson Screen sizes.
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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: Thermometer Reply #244 - Aug 27^th, 2017 at 1:07pm What does the increasing/decreasing dispersion of the hot and cold distributions mean Lees? Any tiny clue percolating to the surface?
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Jovial Monk

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Re: Thermometer
Reply #245 - Aug 27^th, 2017 at 1:25pm

Quote:

Abstract
In this study we evaluated the impact of the size of two naturally ventilated wooden Stevenson screens on air temperature measurements in the first-order meteorological station of Calamocha (northeastern Iberian Peninsula, Spain). The 1-year field experiment consisted of comparing air temperatures measured at the two most commonly sized Stevenson screens used by the Spanish Meteorological State Agency (AEMET) since last century; the medium-sized Stevenson screen employed at the second-order weather stations, versus the large-sized Stevenson screen mainly used at the first-order meteorological stations. The main objective was to report the air temperature difference between these two differently sized Stevenson screens, and to study the impact on the observed differences of some weather elements (i.e. relative humidity, wind speed, total cloud cover, atmospheric pressure and global solar radiation). The results show that the medium-sized Stevenson screen tended to overheat daily maximum air temperatures (0.54 ∘ C on yearly average) and also air temperatures recorded at 1300 UTC. The differences on daily minimum air temperatures were negligible (−0.11 ∘ C on yearly average). This overheating bias (not statistically significant) occurred under anticyclonic situations that lead to clear skies, high solar radiation, weak winds and low relative humidity. The bias appeared throughout the whole year but in particular during the warm season from May through October. Air temperature observations from the nearby station Daroca confirmed an overheating bias introduced by a change from a large-sized Stevenson screen to a medium-sized one in Calamocha.

Impact of two different sized Stevenson screens on air temperature measurements (PDF Download Available). Available from: https://www.researchgate.net/publication/272494986_Impact_of_two_different_sized_Stevenson_screens_on_air_temperature_measurements [accessed Aug 27, 2017].

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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: Thermometer Reply #246 - Aug 27^th, 2017 at 1:27pm lee wrote on Aug 27^th, 2017 at 12:46pm: So it doesn't matter if the data is normally distributed for Australian temperatures? OK then. Let's just use the east coast of Australia. That should work. What could possibly go wrong? What did you mean there, lees? Did you think one side of the distribution represented Eastern Australia?
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lee

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Re: Thermometer
Reply #247 - Aug 27^th, 2017 at 6:10pm

Jovial Monk wrote on Aug 27^th, 2017 at 1:27pm:

lee wrote on Aug 27^th, 2017 at 12:46pm:

So it doesn't matter if the data is normally distributed for Australian temperatures? OK then. Let's just use the east coast of Australia. That should work. What could possibly go wrong? Grin

What did you mean there, lees? Did you think one side of the distribution represented Eastern Australia?

Nope. But it shows how stupid "Are the distributions normal? They are bellshaped, except not quite a bell shape is it? Are the distributions skewed?

None of this matters." is. Wink

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lee

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Re: Thermometer
Reply #248 - Aug 27^th, 2017 at 6:13pm

Jovial Monk wrote on Aug 27^th, 2017 at 1:25pm:

This overheating bias (not statistically significant)

Yes. It meteorological terms it isn't. But when you are talking climastrology to two decimal places " The results show that the medium-sized Stevenson screen tended to overheat daily maximum air temperatures (0.54 ∘ C on yearly average)" certainly is. Wink

BTW - the screens have been replaced since 1973.

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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: Thermometer Reply #249 - Aug 27^th, 2017 at 6:27pm Nope not statistically significant. Too bad
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lee Gold Member Offline Australian Politics Posts: 21546 Gender:	Re: Thermometer Reply #250 - Aug 27^th, 2017 at 6:46pm Jovial Monk wrote on Aug 27^th, 2017 at 6:27pm: Nope not statistically significant. Too bad You men like Gavin Schmidt says any recent warming is not statistically significant?
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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: Thermometer Reply #251 - Aug 27^th, 2017 at 7:25pm We were talking about the BoM.
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lee

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Re: Thermometer
Reply #252 - Aug 27^th, 2017 at 8:01pm

Jovial Monk wrote on Aug 27^th, 2017 at 7:25pm:

We were talking about the BoM.

Ok. We'll talk about BoM and how a 0.54ºC annually is not statistically significant, I believe you quoted.

From another recent paper you quoted -

"Temperatures during the period spanning 2001 to 2010, for example, were around 0.2 degrees Celsius higher than the previous decade."

https://phys.org/news/2017-08-sun-current-global-temperature.html#jCp

So I guess that wasn't statistically significant either. Wink

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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: Thermometer Reply #253 - Aug 27^th, 2017 at 8:04pm The paper you quoted said it wasn’t significant. You did manage to leave that out of the quote
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lee Gold Member Offline Australian Politics Posts: 21546 Gender:	Re: Thermometer Reply #254 - Aug 27^th, 2017 at 8:09pm Jovial Monk wrote on Aug 27^th, 2017 at 8:04pm: The paper you quoted said it wasn’t significant. You did manage to leave that out of the quote Yes. Your paper mentions CO2 at 364ppm (30% above pre-industrial levels) you didn't include that.
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