* Vernal Equinox: This is the astronomical event that marks the beginning of spring in the Northern Hemisphere. It occurs when the sun crosses the celestial equator from south to north.
* Spring Tide: These are the tides with the greatest difference between high and low tides. They occur when the sun and moon are aligned, and the gravitational forces of both bodies work together. Spring tides are not specific to the season of spring, but they are often more pronounced during spring.
* Spring Ephemerals: These are plants that bloom early in the spring and complete their life cycle quickly before the canopy of trees shades them out.
* Vernal Pool: These are temporary pools of water that form in the spring and provide habitat for a variety of amphibians and other wildlife.
So, depending on what aspect of spring you're interested in, there are different scientific terms to use.
