Weather - Revision history

codex: Describe cloud deck, concentrated convective towers and wind-shaped shoulders

2026-10-20T22:35:24Z

Describe cloud deck, concentrated convective towers and wind-shaped shoulders

← Older revision		Revision as of 22:35, 20 October 2026
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	== Relative Humidity ==		== Relative Humidity ==
	* Computed using Magnus-Tetens formula:		The weather model derives relative humidity from the rotating vapor layer and adjusts it for convection and daytime drying. Dew point is then calculated from humidity and temperature. This humidity value is a regional weather input; the current model does not provide a separate humidity profile through the upper cloud towers.
	~~RH = exp((17~~.~~625 × Td)/(243~~.~~04 + Td)) / exp((17~~.~~625 × T)/(243.04 + T))~~

	== Turbulence (Storm Potential) ==		== Turbulence (Storm Potential) ==
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	The client uses the live global convection map to vary the height allowed for rounded formations above Vieneo's widespread cloud deck. With the normal 10 km MSL deck, quiet areas have shallow cloud relief, while developed formations can extend toward the 22 km MSL upper limit. Large connected formations contain smaller billows, with finer detail shaped by wind direction. Procedural grouping and erosion determine the actual visible tops.		The client uses the live global convection map to vary the height allowed for rounded formations above Vieneo's widespread cloud deck. With the normal 10 km MSL deck, quiet areas have shallow cloud relief, while developed formations can extend toward the 22 km MSL upper limit. Large connected formations contain smaller billows, with finer detail shaped by wind direction. Procedural grouping and erosion determine the actual visible tops.

	Grayscale 0 is the quiet endpoint and 255 is maximum convection. ~~The additional height allowance follows the normalized value raised to the power 0.75: 127 allows about 59.3% of~~ the ~~maximum local increase~~, ~~192 about 80.8%~~, and ~~255~~ the ~~full increase~~. ~~This~~ is an allowance above the quiet cloud envelope, not a percentage of the cloud's total altitude. ~~Moderate convection~~ can ~~produce developed billows while quieter regions remain relatively flat~~.		Grayscale 0 is the quiet endpoint and 255 is maximum convection. Weak convection favors shallow relief near the deck, while stronger regional pockets allow deeper, overlapping towers with varied crowns and shoulders. The height response concentrates growth in active areas rather than lifting most of the deck uniformly. The maximum is an allowance above the quiet cloud envelope, not a percentage of the cloud's total altitude; local billows and erosion determine the visible top. Thin wind-shaped structure can also occur along the lower deck and tower shoulders.

	This client visual approximation does not change the server's weather or [[Vieneo]]'s atmospheric definitions; it is not a calculation of buoyancy or cloud microphysics. [[#Cloud lightning\|Cloud lightning]] continues to use the live convection map independently of this height curve. The in-world [[Flight Simulators\|simulator]] retains its baseline cloud appearance.		This client visual approximation does not change the server's weather or [[Vieneo]]'s atmospheric definitions; it is not a calculation of buoyancy or cloud microphysics. [[#Cloud lightning\|Cloud lightning]] continues to use the live convection map independently of this height curve. The in-world [[Flight Simulators\|simulator]] retains its baseline cloud appearance.

	== Precipitation ==		== Precipitation ==
	* ~~Triggered~~ when ~~RH × Turbulence >~~ 0.44 below ~6.~~5 km altitude~~		* Precipitation depends on moisture and convection together. The modeled storm potential is adjusted relative humidity multiplied by convection; lift potential alone does not imply rain.
	* ~~Intensity scaled 2–16~~ (in mm/hr)		* Rain generation begins when this product exceeds 0.3475 below 10 km MSL. Cloud formations can occur where precipitation has not begun.
	* ~~Can cool surface~~ by up to 6°C		* The internal precipitation index ranges from 2 (no-storm baseline) to 16. It is not a direct rainfall rate in mm/hr; precipitation classification treats values below 2.5 as none.
	* Planetary precip coverage targets ~7.5%		* Rain cooling can lower the modeled temperature by up to 6°C.

	== Wind Modeling ==		== Wind Modeling ==

codex: /* Cloud forms above the deck */ Describe convection response, cloud height limits and simulator behavior

2026-10-20T17:00:45Z

Cloud forms above the deck: Describe convection response, cloud height limits and simulator behavior

← Older revision		Revision as of 17:00, 20 October 2026
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	* More widespread than on Earth due to dense atmosphere and solar heating dynamics		* More widespread than on Earth due to dense atmosphere and solar heating dynamics

	=== Cloud forms above the deck ===		===Cloud forms above the deck===
	The client uses the live global convection map to vary the height allowed for rounded formations above Vieneo's widespread cloud deck. ~~Grayscale 0 is~~ the quiet ~~endpoint and 255 is maximum convection. The additional height allowance follows the square of the normalized value: 127 allows about 24.8% of the maximum local increase, 192 about 56.7%~~, ~~and 255~~ the ~~full increase~~. ~~This is an allowance above the quiet cloud envelope~~, ~~not a percentage of the cloud's total altitude~~. Procedural grouping and erosion determine the actual visible tops.		The client uses the live global convection map to vary the height allowed for rounded formations above Vieneo's widespread cloud deck. With the normal 10 km MSL deck, quiet areas have shallow cloud relief, while developed formations can extend toward the 22 km MSL upper limit. Large connected formations contain smaller billows, with finer detail shaped by wind direction. Procedural grouping and erosion determine the actual visible tops.

	~~Quiet areas retain shallow cloud texture~~. ~~Moderate convection favors lower formations~~, ~~while~~ the ~~strongest regions can still develop taller clouds within~~ the ~~existing~~ altitude ~~limits~~. ~~The quiet and maximum-~~convection ~~endpoints are preserved~~. This client visual approximation does not change the server's weather or Vieneo's atmospheric definitions; it is not a calculation of buoyancy or cloud microphysics. [[#Cloud lightning\|Cloud lightning]] continues to use the live convection map independently of this height curve.		Grayscale 0 is the quiet endpoint and 255 is maximum convection. The additional height allowance follows the normalized value raised to the power 0.75: 127 allows about 59.3% of the maximum local increase, 192 about 80.8%, and 255 the full increase. This is an allowance above the quiet cloud envelope, not a percentage of the cloud's total altitude. Moderate convection can produce developed billows while quieter regions remain relatively flat.

			This client visual approximation does not change the server's weather or [[Vieneo]]'s atmospheric definitions; it is not a calculation of buoyancy or cloud microphysics. [[#Cloud lightning\|Cloud lightning]] continues to use the live convection map independently of this height curve. The in-world [[Flight Simulators\|simulator]] retains its baseline cloud appearance.

	== Precipitation ==		== Precipitation ==

codex: Clarify cloud lightning visibility in sunlight and darker cloud regions

2026-10-17T14:37:25Z

Clarify cloud lightning visibility in sunlight and darker cloud regions

← Older revision		Revision as of 14:37, 17 October 2026
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	== Cloud lightning ==		== Cloud lightning ==

	Above the clouds, lightning appears as brief illumination scattered through existing cloud moisture. Sources follow the occupied cloud bodies, including raised convective billows. A discharge can illuminate one to three connected sections in sequence, with irregular repeat pulses; exposed bolts are not required to see this orbital effect. Look down toward active storms, preferably at night or twilight. The irregular glow is a client rendering approximation, not a calculation of electrical charge layers or Vieneo aerosol optics.		Above the clouds, lightning appears as brief illumination scattered through existing cloud moisture. Sources follow the occupied cloud bodies, including raised convective billows. A discharge can illuminate one to three connected sections in sequence, with irregular repeat pulses; exposed bolts are not required to see this orbital effect. Look down toward active storms, preferably at night or twilight. Flashes have less contrast against directly sunlit clouds and remain easier to see in darker cloud regions. This depends on the illumination at the clouds, not simply whether the ship is on the day or night side. The irregular glow is a client rendering approximation, not a calculation of electrical charge layers or Vieneo aerosol optics.

	The natural client-local generator targets about 100 events per second across the entire planet, weighted strongly toward higher live convection values. This is not 100 visible flashes per second from one ship: the horizon, camera direction, weather distribution and cloud obscuration reduce what is visible. Chained sections and repeat pulses belong to one event. The convection map and cloud geometry are not altered by lightning.		The natural client-local generator targets about 100 events per second across the entire planet, weighted strongly toward higher live convection values. This is not 100 visible flashes per second from one ship: the horizon, camera direction, weather distribution and cloud obscuration reduce what is visible. Chained sections and repeat pulses belong to one event. The convection map and cloud geometry are not altered by lightning.

codex: Document squared convection response for above-deck cloud height

2026-10-16T21:20:51Z

Document squared convection response for above-deck cloud height

← Older revision		Revision as of 21:20, 16 October 2026
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	* Affects gusts, cloud formation, and precipitation		* Affects gusts, cloud formation, and precipitation
	* More widespread than on Earth due to dense atmosphere and solar heating dynamics		* More widespread than on Earth due to dense atmosphere and solar heating dynamics

			=== Cloud forms above the deck ===
			The client uses the live global convection map to vary the height allowed for rounded formations above Vieneo's widespread cloud deck. Grayscale 0 is the quiet endpoint and 255 is maximum convection. The additional height allowance follows the square of the normalized value: 127 allows about 24.8% of the maximum local increase, 192 about 56.7%, and 255 the full increase. This is an allowance above the quiet cloud envelope, not a percentage of the cloud's total altitude. Procedural grouping and erosion determine the actual visible tops.

			Quiet areas retain shallow cloud texture. Moderate convection favors lower formations, while the strongest regions can still develop taller clouds within the existing altitude limits. The quiet and maximum-convection endpoints are preserved. This client visual approximation does not change the server's weather or Vieneo's atmospheric definitions; it is not a calculation of buoyancy or cloud microphysics. [[#Cloud lightning\|Cloud lightning]] continues to use the live convection map independently of this height curve.

	== Precipitation ==		== Precipitation ==

codex: Document above-cloud lightning, convection weighting, connected flashes and orbital diagnostic

2026-10-16T18:16:01Z

Document above-cloud lightning, convection weighting, connected flashes and orbital diagnostic

← Older revision		Revision as of 18:16, 16 October 2026
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	* '''Winds Aloft''': Jet-stream equivalents exist—expect wind shear		* '''Winds Aloft''': Jet-stream equivalents exist—expect wind shear
	* '''Turbulence''': More persistent than Earth; strong convection common		* '''Turbulence''': More persistent than Earth; strong convection common

			== Cloud lightning ==

			Above the clouds, lightning appears as brief illumination scattered through existing cloud moisture. Sources follow the occupied cloud bodies, including raised convective billows. A discharge can illuminate one to three connected sections in sequence, with irregular repeat pulses; exposed bolts are not required to see this orbital effect. Look down toward active storms, preferably at night or twilight. The irregular glow is a client rendering approximation, not a calculation of electrical charge layers or Vieneo aerosol optics.

			The natural client-local generator targets about 100 events per second across the entire planet, weighted strongly toward higher live convection values. This is not 100 visible flashes per second from one ship: the horizon, camera direction, weather distribution and cloud obscuration reduce what is visible. Chained sections and repeat pulses belong to one event. The convection map and cloud geometry are not altered by lightning.

			Lightning is disabled in the in-world [[Flight Simulators\|simulator]], including transient illumination on entering it. Administrators can use <code>000COMMANDCLOUDBOLT1</code> for a 30-real-second orbital visibility test and <code>000COMMANDCLOUDBOLT0</code> to stop it. This forces nearby cloud events without changing weather or the natural event stream, and produces no server event, thunder or damage. See [[Special Commands#Admins Only\|Special Commands]] for requirements and reset conditions.

	== Summary of Key Ranges ==		== Summary of Key Ranges ==

reskin: /* See Also */

2025-10-09T14:19:11Z

reskin at 14:33, 7 August 2025

2025-08-07T14:33:17Z

← Older revision		Revision as of 14:33, 7 August 2025
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			Experience the first truly planetary, physics-driven weather system in a game—where every cloud, storm front and fog bank is born of real-world thermodynamics, moisture advection and atmospheric circulation. We don’t just simulate weather, we simulate a planet’s climate.

			== Overview ==
	Vieneo is a tidally locked exomoon with a dense, high-pressure atmosphere and perpetual cloud cover, resulting in a uniquely complex and dynamic climate. The weather simulation in ''Rise: The Vieneo Province'' has evolved into a sophisticated planetary model with dynamic interactions between temperature, humidity, convection, terrain, wind, and time of day. Weather conditions are calculated per-location using global environmental maps and physical models.		Vieneo is a tidally locked exomoon with a dense, high-pressure atmosphere and perpetual cloud cover, resulting in a uniquely complex and dynamic climate. The weather simulation in ''Rise: The Vieneo Province'' has evolved into a sophisticated planetary model with dynamic interactions between temperature, humidity, convection, terrain, wind, and time of day. Weather conditions are calculated per-location using global environmental maps and physical models.

reskin: /* Core Maps Used */

2025-08-07T13:14:03Z

Core Maps Used

← Older revision		Revision as of 13:14, 7 August 2025
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	* '''Average Ceiling''': 1.16 km AGL (~3,800 ft)		* '''Average Ceiling''': 1.16 km AGL (~3,800 ft)

	== Core ~~Maps~~ Used ==		== Core Models Used ==
	* '''Vapor ~~Map~~''': Relative humidity and dew point derivation		* '''Vapor Layer''': Relative humidity and dew point derivation
	* '''Temperature Deviation ~~Map~~''': Surface temperature variation based on season and time		* '''Temperature Deviation Layer''': Surface temperature variation based on season and time
	* '''Convection ~~Map~~''': Storm potential and turbulence		* '''Convection Layer''': Storm potential and turbulence
	* '''Wind Speed ~~Map~~''': Baseline surface and aloft wind speeds		* '''Wind Speed Layer''': Baseline surface and aloft wind speeds
	* '''Wind Direction ~~Map~~''': Orographic and directional wind effects		* '''Wind Direction Layer''': Orographic and directional wind effects
	* '''Elevation Map''': Terrain height for ceiling and visibility calculations		* '''Elevation Map''': Terrain height for ceiling and visibility calculations

reskin: /* See Also */

2025-08-07T13:07:49Z

reskin: /* See Also */

2025-08-07T13:06:18Z

← Older revision		Revision as of 14:19, 9 October 2025
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	* [[Player Portal]]		* [[Player Portal]]
	* [[:File:WeatherRealismAnalysis.pdf\|Weather Simulation Realism Analysis]]		* [[:File:WeatherRealismAnalysis.pdf\|Weather Simulation Realism Analysis]]
			* [[Doppler Radar]]

	== Notes ==		== Notes ==
	The system is designed for future upgrades including airborne radar, storm particles, and localized weather patterns. Orographic effects and fog are computed dynamically using directional wind sampling.		The system is designed for future upgrades including airborne radar, storm particles, and localized weather patterns. Orographic effects and fog are computed dynamically using directional wind sampling.

← Older revision		Revision as of 13:07, 7 August 2025
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	* [[Atmosphere]]		* [[Atmosphere]]
	* [[Player Portal]]		* [[Player Portal]]
	* [[File:WeatherRealismAnalysis.pdf Weather Realism Analysis]]		* [[:File:WeatherRealismAnalysis.pdf\|Weather Simulation Realism Analysis]]

	== Notes ==		== Notes ==
	The system is designed for future upgrades including airborne radar, storm particles, and localized weather patterns. Orographic effects and fog are computed dynamically using directional wind sampling.		The system is designed for future upgrades including airborne radar, storm particles, and localized weather patterns. Orographic effects and fog are computed dynamically using directional wind sampling.

← Older revision		Revision as of 13:06, 7 August 2025
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	* [[Atmosphere]]		* [[Atmosphere]]
	* [[Player Portal]]		* [[Player Portal]]
	* [[File:WeatherRealismAnalysis.pdf\|Weather Realism Analysis]]		* [[File:WeatherRealismAnalysis.pdf Weather Realism Analysis]]

	== Notes ==		== Notes ==
	The system is designed for future upgrades including airborne radar, storm particles, and localized weather patterns. Orographic effects and fog are computed dynamically using directional wind sampling.		The system is designed for future upgrades including airborne radar, storm particles, and localized weather patterns. Orographic effects and fog are computed dynamically using directional wind sampling.