Climate

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Climate is a descriptor used by the IISS to denote average planetary temperate ranges.

Description / Specifications[edit]

Climate and weather are fantastically complicated things affected by dozens upon dozens of factors. With a few exceptions due to fantastically exotic conditions, most planets have a wide variety of climates, biomes, microclimates, ecological zones, and environments. The single-biome world is, for the most part, a very rare fantasy.

  • Climatological trade codes represent an equatorial mean climate band average reading.

T5SS Climate Categories Table[edit]

The descriptors are as follows:

T5SS Climate Categories
Climate: Temperature Range:

(Degrees Celsius)

T5SS TC: Orbit: Lifeforms: Remarks:
Vacuum (none) Extreme: Almost always cold or frozen. Va (vacuum)

As (asteroid or planetoid)

Any Unconventional Life or Exotic Life

(extremophile)

Impossible: Habitation is almost always impossible without extensive technology.
  • Usually associated with worlds without atmospheres.
  • In such cases, the climate of the world is often determined by mean distance from the local star.
Frozen (frigid) Below -30 Fr (frozen)

Ic (iceworld)

HZ +2 Conventional Life (cryomorph) Nigh Impossible: Habitation is near impossible without technology.
Very Cold -30 to -20 Vc (very cold)

Ic (iceworld)

HZ +1 Conventional Life (hypercryophile) Not Hospitable: Habitation is very difficult.
Cold -20 to -5 Co (cold)

Ic (iceworld)

HZ +1 Conventional Life (cryophile or psychrophile) Unhospitable: Habitation is difficult.
Chilly -5 to 5 Ch (chilly) (HZ plus) Conventional Life (normative: mesophile) Semi-Hospitable: Still marginally habitable.
  • 0 degrees C = freezing point of water.
Cool 5 to 15 Tu (tundra) (Terra-norm)

Nrm- (cool normal)

(HZ plus) Conventional Life (normative: mesophile) Hospitable: Still habitable.
Normal (optimal) 15 to 25 Tp (temperate)

Ga (garden or gaia) (Terra-prime)

Nrm (normal) (Terra-norm)

HZ Conventional Life (normative: mesophile) Very Hospitable: Very conducive to life. Almost every Garden World or Terra-prime world possess this ideal climate.
Warm 25 to 40 Wa (warm) (Terra-norm)

Nrm+ (warm normal)

(HZ neg) Conventional Life (normative: mesophile) Hospitable: Still habitable.
Tropical 40 to 50 Tr (tropical) (HZ neg) Conventional Life (normative: mesophile) Semi-Hospitable: Still marginally habitable.
Hot 50 to 60

(122 to 240 F)

Ho (hot) HZ -1 Conventional Life (thermophile) Unhospitable: Habitation is difficult.
Very Hot 60 to 70 Vh (very hot) HZ -1 Conventional Life (hyperthermophile) Not Hospitable: Habitation is very difficult.
Inferno (torrid) 70+ If (infernal) HZ -2 Conventional Life (thermomorph) Nigh Impossible: Habitation is near impossible without technology.
  • 100 degrees C = boiling point of water.
  • Typical of hellworlds, insidious worlds, many radworlds, and worlds with too many greenhouse gases.
  • Venus (SR 1827) (world) is typically thought of as an exemplar world for this category.
Variable (chimeric) Extreme: Variable Lk (locked: satellite or moon)

Tz (twilight zone: mainworld)

Starward or Any Unconventional Life or Exotic Life

(extremophile)

Impossible: Habitation is almost always impossible without extensive technology.
  • Often reserved for worlds that have large variations in temperature due to eccentric orbits or significant axial tilts.

History & Background / Dossier[edit]

No information yet available.

Climate & The Long Night[edit]

No information yet available.

References & Contributors / Sources[edit]

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