Which mechanism causes increased surface water salinity within subtropical ocean gyres?

💡 Explanation

When subtropical high-pressure systems form over gyres, descending air inhibits cloud formation, increasing solar radiation and evaporation because warmer temperatures reduce water density, leading to higher salinity. Therefore evaporation drives up salinity, rather than upwelling, ice melt, or river runoff, which introduce fresher water from different sources.

• Which outcome occurs when unconsolidated pyroclastic materials saturate?
• Which mechanism maintains stable North Atlantic thermohaline circulation despite freshwater input from glacial melt?
• Which outcome occurs when tectonic uplift interrupts stream thalweg?
• Following a river avulsion event, which process promotes oxbow lake formation when the river establishes a straighter course?
• Which mechanism MOST directly causes meandering stream formation on a gently sloping floodplain?
• Which outcome occurs when consistent winds shape ventifacts?