Temperate Seasonal Rainforest Picture Climate Information (Precipitation, temperature ranges, & be sure to include a climatograph here) o Temperature ranges from -30C-30ºC, yearly average is 10ºC o Precipitation ranges from 750-1500mm of rain per year Other important physical factors (soil nutrients...According to the Holdridge life zones system of bioclimatic classification Portland, Oregon is situated in or near the warm temperate moist forest biome. The annual average temperature is 12 degrees Celsius (53.6 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
Plate tectonics plays a vital role in the long-term carbon cycle, which helps to maintain a temperate climate. Plate tectonics provides long-term cooling of the core, which is vital for generating a magnetic field, and the magnetic field is capable of shielding atmospheric volatiles from the solar wind.