Causes of Hydrometeorological Hazards

A clinometer is used to determine the height of the cloud base by measuring the time the balloon disappears into the clouds.

A ceiling balloon is used to determine the height of the cloud base by measuring the time it takes for the balloon to disappear into the clouds.

Theodolite is an instrument that determines wind speed and direction by being attached to a hydrogen-filled pilot balloon.

Radiosonde is an instrument attached to a balloon used to measure temperature, pressure, and relative humidity in the atmosphere.

Wind finding radar uses radar echoes to detect and monitor typhoons and cloud masses within 400 kilometers.

A Weather finding radar is used to calculate the motion of precipitation and determine the structure of storms.

A Ceiling Light Projector is used to determine wind speed and direction by projecting a light beam to the clouds.

A Rawinsonde is capable of measuring wind velocity in the atmosphere.

A Doppler Radar is used to calculate the potential of precipitation to cause severe weather.

A Clinometer determines the height of the cloud base by measuring the distance of the cloud base to the ground.

Ceiling Balloon is filled with helium or other gas heavier than air to determine the height of the cloud base.

A Radiosonde sends data to a ground receiver using a transmitter attached to a balloon.

Wind finding radar measures wind speed and direction by sending a balloon to different heights in the atmosphere.

Theodolite is used to determine wind speed by floating at different heights in the atmosphere.

A Ceiling Light Projector is an instrument that projects a light beam to the clouds.