AMS Study Guide 2026

Everything you need to pass the AMS exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

📋 AMS Exam Format at a Glance

100
Questions
120 min
Time Limit
75.00%
Passing Score

📚 AMS Topics to Study (21)

✍️ Sample AMS Questions & Answers

1. The Milankovitch cycles describe climate variability caused by:
Periodic variations in Earth's orbital parameters

Milankovitch cycles refer to variations in Earth's eccentricity, axial tilt, and precession that alter the distribution and intensity of solar radiation reaching Earth.

2. What does Doppler radar velocity data measure that standard reflectivity cannot?
Radial wind velocity (toward or away from the radar)

Doppler radar measures the phase shift of returned radar pulses to determine the radial velocity of precipitation moving toward or away from the radar.

3. Which equation describes the conservation of mass in atmospheric dynamics?
Continuity equation

The continuity equation ensures that mass is neither created nor destroyed within an air volume.

4. Ground-based microwave radiometers in meteorology are used primarily for what purpose?
Profiling temperature and humidity through the lower troposphere continuously

Microwave radiometers passively detect thermal emissions from atmospheric oxygen and water vapor to retrieve continuous temperature and humidity profiles.

5. In a barotropic atmosphere, how do pressure surfaces relate to density surfaces?
They are parallel (no solenoids)

A barotropic atmosphere has parallel pressure and density surfaces, meaning no baroclinic instability can develop.

6. The Köppen climate classification system primarily categorizes climates based on:
Temperature and precipitation patterns

Köppen's system uses monthly and annual temperature and precipitation thresholds, along with seasonal patterns, to define five major climate zones and their subtypes.

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Your AMS Study Path
1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation