World Climate

[tjoneslo]

The formula on world climate (p.376) makes no sense.

The latest version of the Errata has already changed the Max temperature to Average Temperature. So the climate to temperature table gives the average temperature.

The table that follows should be "Temperature Range"
</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;">Atmosphere Range
None 30 degrees
Trace 20 degrees
Very Thin 15 degrees
Thin 10 degrees
Standard 5 degrees
Dense 2 degrees</pre>[/QUOTE]Add the note:
Temperature can vary from the average by the range given, falling at night, rising during the day. Traveling north 30 degrees latitude subtracts the same value from the average temperature. Travelling south to the equator adds a like amount. Seasonal average temperatures can be up to twice this amount.

 

[Antares Administration]

Thanks for this. I did come to some of the same conclusions when I was doing the Starfall Overview, but this is much clearer. Now I need to revisit planetology and climatology for Starfall....

Paul Nemeth
AA

 

[hunter]

This is what I am looking at to replace the current system (based in large part on tjoneslo's suggestions above).

***************

World Climate
1d20............Climate...........Average Temp.*
5 or less........Torrid..............61°C or higher
6..................Very Hot..........55°C
7..................Hot................45°C
8..................Warm.............35°C
9..................Tropical..........25°C
10-11............Temperate......15°C
12.................Chilly.............0°C
13.................Cool.............-15°C
14.................Cold.............-25°C
15.................Frigid...........-35°C
16 or greater...Frozen..........-41°C or lower

* At 30° latitude. Add +0.5°C every 1° south of 30° latitude, and subtract -0.5° C every 1° north of 30° latitude. Using the T20 World Map add +5°C for every hex row below row 4 and subtract -5°C for every hex row above row 4.

Nighttime Temperature
Atmosphere...Temp Mod.
None............-50°C
Trace...........-40°C
Very Thin......-30°C
Thin.............-20°C
Standard.......-10°C
Dense...........-5°C

Axial Tilt: 1d12-3 * 10°. Treat anything less than zero as zero. The axial tilt of a world determines if it will experience seasonal temperature changes and how intense such changes will be. For every 10° of axial tilt the average temperature will increase by 10°C during the summer and will decrease by 15°C during the winter. For example a world with an axial tilt of 20° (near earth normal) would have an average temperature 30°C lower than normal during winter and up to 20°C higher during summer. During Spring and Fall seasons the temperature will be average.

****************


Hunter

 

[Antares Administration]

I have adjusted the World Climate for Starfall to conform with Hunter's model above, and passed it to MJD. The major impact that I see off the bat is the effect that having a thin atmosphere has. Mind you, I lived at altitude in East Africa for a while, and it's amazing how temperature can drop from 40C to 20C in a few hours.

Paul Nemeth
AA