3032: Skew-T Log-P - Revision history

Giraffequeries: removed , please check and re-add if transcript is insufficent

2025-10-28T15:13:21Z

removed <incomplete transcript>, please check and re-add if transcript is insufficent

131.242.7.30: Fixed minor typo: "the the" -> "the"

2025-10-06T22:38:41Z

Fixed minor typo: "the the" -> "the"

82.132.237.150: Undo revision 387626 by Sprucegrouse (talk) ...this was actually comic-correct, as was. The 'typo' vs. the real thing was already pointed out in the following text.

2025-09-28T12:02:21Z

Undo revision 387626 by Sprucegrouse (talk) ...this was actually comic-correct, as was. The 'typo' vs. the real thing was already pointed out in the following text.

Sprucegrouse: Corrected spelling of Heviside

2025-09-28T05:16:22Z

Corrected spelling of Heviside

BobcatInABox: /* References */

2025-05-07T12:44:17Z

‎References

BobcatInABox: /* Table with terms */

2025-05-06T23:40:05Z

‎Table with terms

FaviFake: someone keeps using references

2025-05-02T05:26:31Z

someone keeps using references

FaviFake: Undo revision 370328 by 162.158.178.197 (talk) - Don't see how it's incomplete, please xplain

2025-03-26T15:51:13Z

Undo revision 370328 by 162.158.178.197 (talk) - Don't see how it's incomplete, please xplain

162.158.178.197 at 20:25, 25 March 2025

2025-03-25T20:25:21Z

B for brain: /* Explanation */ Removed Incomplete tag

2025-01-13T15:36:37Z

‎Explanation: Removed Incomplete tag

← Older revision		Revision as of 15:13, 28 October 2025
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	==Transcript==		==Transcript==
−	~~{{incomplete transcript\|Do NOT delete this tag too soon.}}~~

	:How to interpret a skew-T log-P diagram		:How to interpret a skew-T log-P diagram

@@ Line 80: / Line 80: @@
 |-
 | Don't stand here or you might get hit by a balloon || No || On the misguided basis that this is a cross-sectional diagram, this would be the imagined release-point for the balloon(s) involved. And, if you're particularly (un)lucky with the winds, where they eventually fall straight back down to once the balloon has popped.
-However, this is a diagram of some measurements ''for'' a location, not directly indicating a range of places you could choose to stand, and the bottom of the lines indicate the conditions ''at'' the release point (and possibly then the point of landing), regardless of where those lines appear to be rooted. To be accurate, the whole width of the the table (and at a 'height' that represents the actual recorded ground-level pressure for that location and time) is where any 'danger' may be. The person initially releasing the balloon would not normally be too fazed by being struck by a wind-buffeted balloon (if anything, they'd be more concerned at damaging it prior to release). The attached remains of a popped balloon that is no longer buoyant will generally also act as a form of parachute (together with any actual drogue chute) to make any the light (and often well padded) payload descend slowly enough to not be a falling danger.
+However, this is a diagram of some measurements ''for'' a location, not directly indicating a range of places you could choose to stand, and the bottom of the lines indicate the conditions ''at'' the release point (and possibly then the point of landing), regardless of where those lines appear to be rooted. To be accurate, the whole width of the table (and at a 'height' that represents the actual recorded ground-level pressure for that location and time) is where any 'danger' may be. The person initially releasing the balloon would not normally be too fazed by being struck by a wind-buffeted balloon (if anything, they'd be more concerned at damaging it prior to release). The attached remains of a popped balloon that is no longer buoyant will generally also act as a form of parachute (together with any actual drogue chute) to make any the light (and often well padded) payload descend slowly enough to not be a falling danger.
 <br/>Having traveled tens of kilometers up, before gently coming down, the chances of any given balloon landing in any given awkward spot (let alone the point of release) are low. Where possible, the sensor package and the remains of the balloon may be recovered, but the largest danger may instead be the environmental effects of the fragments of burst balloon, scattered to the very winds they were originally measuring.
 |-

@@ Line 74: / Line 74: @@
 | Humidor || No || In reality, is a {{w|Humidor|container}} that is used to maintain a more controllable humidity within which to store smoking products. In the graph, points at the line that is probably representing the dew point, which is represents the ''actual'' humidity encountered.
 |-
-| Heaviside layer || No || In the metaphysical cosmology of the musical ''Cats'', the Heavyside Layer is a blissful afterlife which all the cats in the musical long for. It is likely included here as a comical misspelling of the {{w|Kennelly-Heaviside layer|(Kennelly-)Heaviside layer}} (also called the E region) of the {{w|ionosphere}} that was co-discovered by {{w|Arthur E. Kennelly}} and {{w|Oliver Heaviside}}. This layer is extremely far up in relative atmospheric terms, straddling the {{w|Kármán line|boundary to 'space'}}, and would be shown as a broad horizontal feature significantly above the existing "No birds up here" label, if it all.
+| Heavyside layer || No || In the metaphysical cosmology of the musical ''Cats'', the Heavyside Layer is a blissful afterlife which all the cats in the musical long for. It is likely included here as a comical misspelling of the {{w|Kennelly-Heaviside layer|(Kennelly-)Heaviside layer}} (also called the E region) of the {{w|ionosphere}} that was co-discovered by {{w|Arthur E. Kennelly}} and {{w|Oliver Heaviside}}. This layer is extremely far up in relative atmospheric terms, straddling the {{w|Kármán line|boundary to 'space'}}, and would be shown as a broad horizontal feature significantly above the existing "No birds up here" label, if it all.
 The labeled item, in this diagram, is a heavily marked isotherm, or line of constant temperature. Most likely this is the 0°C line, marking the freezing point of water that is of great importance to meteorologists, pilots, etc. With a few caveats, passing 'through' this line marks a transition between any precipitation tending to be liquid rain and of it being snow/hail-forming (or, on passing down through it, to start melting such things), and if the measurement lines ''start'' above-left of this line then any falling (or condensing) water is almost certainly going to appear as one frozen form or other. Above-ground, it suggests important implications of potential ice-formation (affecting ''weight'' and lift dynamics) upon aircraft beyond any given altitude, should the existing moisture load be high and the dew-point be inconveniently close.
 |-

@@ Line 74: / Line 74: @@
 | Humidor || No || In reality, is a {{w|Humidor|container}} that is used to maintain a more controllable humidity within which to store smoking products. In the graph, points at the line that is probably representing the dew point, which is represents the ''actual'' humidity encountered.
 |-
-| Heavyside layer || No || In the metaphysical cosmology of the musical ''Cats'', the Heavyside Layer is a blissful afterlife which all the cats in the musical long for. It is likely included here as a comical misspelling of the {{w|Kennelly-Heaviside layer|(Kennelly-)Heaviside layer}} (also called the E region) of the {{w|ionosphere}} that was co-discovered by {{w|Arthur E. Kennelly}} and {{w|Oliver Heaviside}}. This layer is extremely far up in relative atmospheric terms, straddling the {{w|Kármán line|boundary to 'space'}}, and would be shown as a broad horizontal feature significantly above the existing "No birds up here" label, if it all.
+| Heaviside layer || No || In the metaphysical cosmology of the musical ''Cats'', the Heavyside Layer is a blissful afterlife which all the cats in the musical long for. It is likely included here as a comical misspelling of the {{w|Kennelly-Heaviside layer|(Kennelly-)Heaviside layer}} (also called the E region) of the {{w|ionosphere}} that was co-discovered by {{w|Arthur E. Kennelly}} and {{w|Oliver Heaviside}}. This layer is extremely far up in relative atmospheric terms, straddling the {{w|Kármán line|boundary to 'space'}}, and would be shown as a broad horizontal feature significantly above the existing "No birds up here" label, if it all.
 The labeled item, in this diagram, is a heavily marked isotherm, or line of constant temperature. Most likely this is the 0°C line, marking the freezing point of water that is of great importance to meteorologists, pilots, etc. With a few caveats, passing 'through' this line marks a transition between any precipitation tending to be liquid rain and of it being snow/hail-forming (or, on passing down through it, to start melting such things), and if the measurement lines ''start'' above-left of this line then any falling (or condensing) water is almost certainly going to appear as one frozen form or other. Above-ground, it suggests important implications of potential ice-formation (affecting ''weight'' and lift dynamics) upon aircraft beyond any given altitude, should the existing moisture load be high and the dew-point be inconveniently close.
 |-

@@ Line 120: / Line 120: @@
 *Even though this comic was released on New Year's Day 2025, it was not a [[:Category:New Year|New Year comic]].
 **Only second time this has happened since New Year comics became a regular thing from 2011.
 {{comic discussion}}

@@ Line 45: / Line 45: @@
 The real reason for the not quite identical lines is that the measured temperature at a given pressure can be converted to or from the ''potential'' temperature that the same air would have if at a standard pressure (holding the same amount of heat energy). For practical reasons, both for composing and interpreting the eventual plot, each of the slightly differently skewed isotherms are given, usually in clearly differentiable styles of line.
-The "Dave" of the description may be David Bolton, whose 1980 paper introduced a means of calculating the atmosphere's potential temperature<ref>https://journals.ametsoc.org/view/journals/mwre/108/7/1520-0493_1980_108_1046_tcoept_2_0_co_2.xml</ref>.
+The "Dave" of the description may be David Bolton, whose [https://journals.ametsoc.org/view/journals/mwre/108/7/1520-0493_1980_108_1046_tcoept_2_0_co_2.xml 1980 paper] introduced a means of calculating the atmosphere's potential temperature.
 |-
 | Line of constant thermodynamics || No || {{w|Thermodynamics}} is a branch of physics concerned with work, temperature, heat, the way they relate to entropy, energy, enthalpy, and the physical properties of radiation and matter. As a field of study, Thermodynamics does not have '''constant lines,''' except perhaps as a means of describing a consistent avenue of research.

@@ Line 10: / Line 10: @@
 ==Explanation==
 {{w|Skew-T log-P diagram}}s are commonly used to plot {{w|atmospheric sounding|atmospheric soundings}} collected by {{w|weather balloon|weather balloons}} or {{w|Constant altitude plan position indicator|other}} [https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/wea.658 methods]. The name comes from the temperature (T) lines being skewed at a 45-degree angle and the pressure (P) lines being logarithmic in scale. Although it ''looks'' very much like a cross-sectional diagram, it shows non-positional information derived from passing (generally) vertically up through the atmosphere from the initial reference location.
@@ Line 127: / Line 125: @@
 [[Category:Charts]]
 [[Category:Weather]]

← Older revision		Revision as of 15:36, 13 January 2025
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	==Explanation==		==Explanation==
−	{{incomplete\|Created by a BOT CLEANING UP AFTER DAVE - This needs an explanation. Table not filled out. Also the title text was not mentioned at all. I added a very simple start to this, but nothing about what the product actually means, please expand... Do NOT delete this tag too soon.}}
−
	{{w\|Skew-T log-P diagram}}s are commonly used to plot {{w\|atmospheric sounding\|atmospheric soundings}} collected by {{w\|weather balloon\|weather balloons}} or {{w\|Constant altitude plan position indicator\|other}} [https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/wea.658 methods]. The name comes from the temperature (T) lines being skewed at a 45-degree angle and the pressure (P) lines being logarithmic in scale. Although it ''looks'' very much like a cross-sectional diagram, it shows non-positional information derived from passing (generally) vertically up through the atmosphere from the initial reference location.		{{w\|Skew-T log-P diagram}}s are commonly used to plot {{w\|atmospheric sounding\|atmospheric soundings}} collected by {{w\|weather balloon\|weather balloons}} or {{w\|Constant altitude plan position indicator\|other}} [https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/wea.658 methods]. The name comes from the temperature (T) lines being skewed at a 45-degree angle and the pressure (P) lines being logarithmic in scale. Although it ''looks'' very much like a cross-sectional diagram, it shows non-positional information derived from passing (generally) vertically up through the atmosphere from the initial reference location.