Synoptic Meteorology Flashcards
6 cards from real AMS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Synoptic Meteorology flashcards as text
What is the MSLP (Mean Sea Level Pressure) standard value for a typical atmospheric surface?
Answer: 1013.25 hPa
The standard mean sea level pressure is 1013.25 hPa (or approximately 29.92 inches of mercury).
During rapid cyclogenesis (bombogenesis), how much must surface pressure drop in 24 hours?
Answer: At least 24 hPa in 24 hours (latitude-corrected)
Bombogenesis is defined as a surface low deepening by at least 1 Bergeron (24 hPa/24 hrs adjusted to 60°N) in 24 hours.
What is the primary source of energy for extratropical cyclones?
Answer: Baroclinic instability from horizontal temperature gradients
Extratropical cyclones derive their energy primarily from baroclinic instability, converting available potential energy from horizontal temperature contrasts.
A zonal flow pattern in the mid-latitudes is characterized by what?
Answer: Predominantly west-to-east flow with weak amplitude
Zonal flow features nearly west-to-east jet stream with weak ridges and troughs, typically associated with milder, less extreme weather.
What is Q-vector divergence used to diagnose in synoptic meteorology?
Answer: Vertical motion without computing vorticity separately
Q-vector divergence provides a direct measure of synoptic-scale vertical motion without separating vorticity and thermal advection terms.
The Polar Front Jet Stream typically forms near which atmospheric boundary?
Answer: The boundary between polar and mid-latitude air masses
The polar front jet stream develops along the sharp temperature gradient between cold polar and warmer mid-latitude air masses.