CCM CCM Meteorological Instrumentation & Data Quality

Question 1

Which type of anemometer is most commonly used in professional surface weather stations for accurate wind speed measurement?

Accepted Answer

Cup anemometer with wind vane

Answer

Hand-held Beaufort scale device

Answer

Ceiling balloon with drift measurement

Answer

Radiosonde with GPS tracking only

Question 2

What is the primary purpose of a siting review when evaluating data from a surface weather station?

Accepted Answer

To assess whether nearby obstructions or heat sources introduce artificial biases into the recorded data

Answer

To determine the station's elevation above sea level

Answer

To confirm the station is registered with NOAA

Answer

To verify the station transmits data via satellite

Question 3

When a CCM uses data from an Automated Surface Observing System (ASOS) station for litigation support, which quality check is most important?

Accepted Answer

Verifying the station's maintenance records, calibration history, and any outage periods during the event

Answer

Confirming the station is located in the same state as the incident

Answer

Checking that the data file uses comma-separated format

Answer

Ensuring the station was installed after 2000

Question 4

A consulting meteorologist notices a sudden 10°F spike in temperature data from a surface station during a clear, calm overnight period. This most likely indicates:

Accepted Answer

A sensor malfunction, data transmission error, or local heat source temporarily affecting the sensor

Answer

An actual urban heat island effect

Answer

A rapid warming from an incoming frontal system

Answer

Normal diurnal temperature variation

Question 5

What does the term 'homogenization' mean in the context of long-term climate data records?

Accepted Answer

Adjusting historical data to remove artificial discontinuities caused by station moves, instrument changes, or observer changes

Answer

Combining data from multiple stations into a single regional average

Answer

Standardizing data file formats across different agencies

Answer

Removing all data collected before 1950

Question 6

Which radar product is most useful for estimating precipitation accumulation over a watershed for flood risk assessment?

Accepted Answer

Dual-polarization QPE (Quantitative Precipitation Estimation) composite

Answer

Base reflectivity scan at 0.5° elevation

Answer

Velocity Azimuth Display (VAD) wind profile

Answer

Storm Relative Mean Radial Velocity product