Difference between revisions of "Atmosphere"
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| − | The [[Atmosphere]] code is a [[UWP]] code to represent the breathing [[environment]] encountered on the world. | + | The [[Atmosphere]] code is a [[UWP]] code to represent the breathing [[environment]] encountered on the [[world]]. |
* It represents the mixture of gases and other elements that may be present on a sufficiently sized [[world]] or [[moon]]. | * It represents the mixture of gases and other elements that may be present on a sufficiently sized [[world]] or [[moon]]. | ||
* Very small [[world]]s, [[planetoid]]s, [[asteroid]]s, and other small objects almost never have an atmosphere unless artificially modified using advanced technology. | * Very small [[world]]s, [[planetoid]]s, [[asteroid]]s, and other small objects almost never have an atmosphere unless artificially modified using advanced technology. | ||
Revision as of 02:36, 23 April 2018
The Atmosphere code is a UWP code to represent the breathing environment encountered on the world.
- It represents the mixture of gases and other elements that may be present on a sufficiently sized world or moon.
- Very small worlds, planetoids, asteroids, and other small objects almost never have an atmosphere unless artificially modified using advanced technology.
- Tent Worlds are an example of a world ordinarily too small to contain an atmosphere, but artificially modified to possess an atmosphere using paraterraforming.
Description / Specifications
Some atmospheres require specific personal equipment for survival and protection.
World Atmosphere Classification Codes Table
Atmospheric Code Descriptions Code Specific Description General Description Pressure (ATM) Remarks 0 Vacuum Vacuum < 0.001 Vacuum requires a vacc suit. The atmosphere has a pressure of less than 0.001 atmospheres, which requires the use of a vacc suit. 1 (Trace) Vacuum 0.001-0.09 The atmosphere has a pressure of less than 0.1 atmospheres, which requires the use of a vacc suit. 2 (Very Thin / Tainted) Vacuum 0.10-0.42 Very Thin tainted requires a filter respirator combination 3 (Very Thin) Vacuum 0.10-0.42 Very Thin requires a respirator. The atmosphere has a pressure of 0.1 to 0.42 atmospheres, which requires the use of a respirator to ensure sufficient oxygen. 4 (Thin / Tainted) Thin 0.43-0.70 Tainted requires a filter mask. The atmosphere contains an unusual taint such as such as disease, a hazardous gas mix, pollutants, or sulfur compounds which requires the use of a filter mask. 5 Thin Thin 0.43-0.70 The atmosphere has a pressure of 0 43 to 0.70 atmospheres. The atmosphere is a standard oxygen/nitrogen mix, which is breathable without assistance. 6 Standard Standard 0.71-1.49 The atmosphere has a pressure of 0.71 to 1.49 atmospheres. The atmosphere is a standard oxygen/nitrogen mix, which is breathable without assistance. 7 (Standard / Tainted) Standard 0.71-1.49 Tainted requires a filter mask. 8 Dense Dense 1.50-2.49 The atmosphere has a pressure of 1.50 to 2.49 atmospheres The atmosphere is a standard oxygen/nitrogen mix, which is breathable without assistance. 9 (Dense / Tainted) Dense 1.50-2.49 Tainted requires a filter mask. A (10) Exotic Exotic varies An unusual gas mix which requires the use of oxygen tanks, but protective suits are not needed. B (11) (Corrosive) Exotic varies A concentrated gas mix or unusual temperature creates a corrosive environment, which requires the use of a Hostile environment suit or vacc suit. C (12) (Insidious) Exotic varies The atmosphere is similar to a corrosive atmosphere, but extreme conditions cause the corrosive effects to defeat any protective measures in 2 to 12 hours. D (13) (Dense, high) Exotic varies Pressure at or below sea level is too great to support life but is breathable at higher altitudes. E (14) † (Ellipsoid) † Exotic varies The world’s surface is ellipsoidal, not spherical. Because the atmosphere remains spherical, surface atmospheric pressure ranges from very high at the middle to very low at the ends Breathable bands may exist at some point within the range of pressure. F (15) † (Thin, low) † Exotic varies The Ellipsoid World is large and massive, with a thin atmosphere which settles to the lowest levels of the terrain. The atmosphere is unbreathable at most altitudes except the very low ones (as in depressions or deep valleys).
† - NOTE: In MgT and T5, Atm type E is "Thin, Low", and Atm type F is "Unusual", which includes (but is not limited to) Ellipsoidal atmospheres.
History & Background / Dossier
All industrial societies must gain an expanded understanding of atmospheres, air pressure, atmospheric constituents, gas behavior, industrial pollutants, and other factors in order to build a modern interstellar starfaring society of TL:10-12 or greater. The UWP is one of the external expressions of those expectations about atmospheric understandings within Charted Space.
Atmospheric Equipment
Some equipment used in nonstandard environments with nonstandard atmospheres include:
- Air Tanks
- Atmosphere Tester
- Atmospheric Survival Suit
- Ball, Rescue
- Base, Advanced
- Battle Dress
- Beacon, Emergency
- Body Pressure Suit
- Cabin, Prefabricated
- Combat Environment Suit
- Extended Life Support Sytem [1]
- Filter Mask
- Filter Respirator Combination
- Filter Suit
- Gauge, Depth
- Gauge, Tank Pressure
- Hazard Suit
- Hostile Environment Suit
- Locator, Inertial
- Mask, Face
- Mask, Filter
- Mask, Protective
- Oxygen Rebreather
- Oxygen Tank
- Respirator
- "Sniffer" Bioscanner
- Suit Air Conditioner
- Suit, Protective
- Suit, Protective, Heavy
- Survival Bubble
- Tent, Pressure
- Vacc Suit [2]
Atmospheric Taints
Atmospheric taints are also known as irritants:
- Atmospheres with an imbalance of Ammonia (NH3)
- Atmospheres with an imbalance of Carbon Dioxide (C02)
- Atmospheres with an imbalance of Chlorine (Cl2)
- Atmospheres with an imbalance of Methane (CH4)
- Atmospheres with an imbalance of Organic Taints
- Atmospheres with an imbalance of Oxygen (02)
- Atmospheres with an imbalance of Nitrogen (N2)
- Atmospheres with an imbalance of Sulfur Compounds
References and contributors
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This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Far Future Enterprises or by permission of the author. The page history lists all of the contributions.
- Marc Miller. Worlds and Adventures (Game Designers Workshop, 1977), 5.Marc Miller, Robert Eaglestone, Don McKinney. Worlds and Adventures (Far Future Enterprises, 2019), 5.
- J. Andrew Keith. Exotic Atmospheres (Game Designers Workshop, 1983), 1-16. (Special Supplement 2 from the periodical Journal of the Travellers' Aid Society 17)
- Marc Miller. Referee's Manual (Game Designers Workshop, 1987), 22.
- Geir Lanesskog. World Builder's Handbook (Mongoose Publishing, 2023), 64-68.Joe Fugate, J. Andrew Keith, Gary L. Thomas. World Builder's Handbook (Digest Group Publications, 1989), 64-68.
- Terrance McInnes, Dave Nilsen. World Tamer's Handbook (Game Designers Workshop, 1994), 11-17.
- Jon F. Zeigler. First In (Steve Jackson Games, 1999), 70,72.
- Paul Drye, Loren Wiseman, Jon F. Zeigler. Interstellar Wars (Steve Jackson Games, 2006), 125-6.
- Citation Missing - Mongoose Traveller Main Rulebook
- Marc Miller. T5 Core Rules (Far Future Enterprises, 2013), 409.
- Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science
- ↑ Jim Cunningham. High Passage 3 (FASA, 1982), 28.
- ↑ Marc Miller. Twilight's Peak (Game Designers Workshop, 1980), 5.