Which factor does NOT primarily control Earth's climate patterns?

• A. Latitude
• B. Daily weather forecasts
• C. Ocean currents
• D. Greenhouse gas concentrations

Answer: (B)

Long-term energy balance shapes Earth's climate patterns, and three factors stand out as primary controls. Latitude determines the amount and distribution of solar energy a region receives over the year, creating broad temperature zones from the equator to the poles. Ocean currents move heat around the globe, so regions can be warmer or cooler than their raw latitude would suggest and regional climates are influenced by these heat transports. Greenhouse gas concentrations trap infrared radiation in the atmosphere, altering the overall warmth of the planet and shifting long-term climate conditions.

Daily weather forecasts, by contrast, describe short-term atmospheric conditions—what happens over hours to a few weeks. They reflect the current state of the weather systems but do not set the long-term climate trends. The climate is about averages and patterns over decades to centuries, driven by latitude, ocean heat transport, and atmospheric composition. That’s why daily forecasts do not primarily control Earth's climate patterns.