![]() ![]() A wind vane is used as part of the anemometer to determine the wind's direction. A windmill anemometer is a common instrument used at weather stations to obtain the wind speed. The wind pushes the cups and causes the arms to rotate at a rate proportional to the wind speed. A cup anemometer is a type of instrument that uses three or four hemispherical cups mounted on horizontal arms on a vertical rod. Anemometers are common at weather stations. Some of these instruments measure both wind speed and wind direction. The temperature sensor on this device is contained within a vented unit which allows air to flow freely across the sensor and measure the temperature while keeping the thermometer shaded from the direct heating of the sun.Īn anemometer is a type of weather instrument that measures wind speed. At modern weather stations an electronic temperature sensor is used to measure the outside air temperature. The volume of the liquid expands as it heats up, representing an increase in temperature, and the liquid contracts when it cools down, representing a decrease in temperature. The volume of the mercury changes as the outside temperature changes. A common thermometer is the mercury thermometer used outside residential areas. Most thermometers measure by direct contact with the air, although infrared thermometers use sensors to detect infrared radiation coming off of surfaces and estimate temperature that way (similar to the way night-vision goggles work). Thermometers are used to measure outside and inside temperature, body temperature, oven temperature, and food temperature. ![]() The variables measured with these types of instruments are wind speed and direction, pressure, humidity, temperature, and precipitation, including rain and snow.įigure A: Electronic Temperature Sensor (Image from NOAA)Ī thermometer is an instrument used to measure temperature. Different types of instruments are used to measure different parameters and there are many types to choose from. Weather instruments are used to take measurements of temperature, wind, humidity, and rainfall, as well as other atmospheric factors which describe the local weather and climate. ![]() I should already be familiar with: Temperature, Humidity, Pressure Why do I care? By understanding patterns of temperature, wind, and rainfall as measured by instruments, we can describe our local weather and climate. Weather instruments are used to take measurements of various atmospheric parameters at local weather stations. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |