Weather Elements, Instruments, and Measurements
25 questions
During an inspection of a standard meteorological station, geography students noticed that the wooden cabinet containing several measuring instruments was painted white and constructed with double-louvered side panels. Which of the following best explains the purpose of these design features?
During a fieldwork exercise at a coastal weather station, students were tasked with recording atmospheric pressure and wind speed. Which pair of instruments correctly matches these two weather elements to their corresponding measuring devices?
During a meteorological observation at a weather station in Sokoto, Nigeria, the maximum air temperature recorded using a Six's maximum and minimum thermometer was , while the minimum air temperature recorded was . What is the diurnal range of temperature in for this observation period?
A weather station in Ibadan recorded a daily maximum temperature of and a daily minimum temperature of . What is the diurnal range of temperature for that day in ?
A meteorologist at a meteorological station needs to determine the atmospheric pressure of the locality. Which weather instrument should be used for this measurement?
At a weather observation station in Jos, Nigeria, a meteorologist recorded the following daily temperature readings using a Six's maximum and minimum thermometer over a four-day period:
- Day 1: Maximum = , Minimum =
- Day 2: Maximum = , Minimum =
- Day 3: Maximum = , Minimum =
- Day 4: Maximum = , Minimum =
Calculate the mean diurnal (daily) temperature range for this four-day period in degrees Celsius ().
Inside a Stevenson screen at a meteorological station, a dry-bulb thermometer reads while a wet-bulb thermometer reads , yielding a wet-bulb depression of . Which atmospheric variable is determined using this temperature difference, and which weather instrument would be mistakenly selected if an observer attempted to measure this variable by recording atmospheric pressure instead?
A weather observer at a meteorological station needs to organize daily readings and equipment records. Match each weather element listed in Column I with its corresponding measuring instrument and standard unit of measurement in Column II. Which pairings correctly align every weather element with its designated instrument?
Click a left item, then click its matching right item
Items
Matches
A weather observer at a meteorological station requires a continuous visual trace of fluctuations in atmospheric pressure over a 24-hour cycle. Which instrument is designed specifically to record these continuous pressure changes on a rotating drum chart?
At a weather station in Port Harcourt, Nigeria, the maximum thermometer recorded a temperature of during the day, and the minimum thermometer recorded at night. What is the diurnal temperature range in degrees Celsius () recorded for that day?
At a coastal weather station situated at sea level (), the recorded dry-bulb air temperature is . A secondary meteorological station is established on an adjacent highlands plateau at an altitude of . Assuming a standard environmental lapse rate of per of ascent in the troposphere, what is the calculated air temperature at the highlands station in degrees Celsius ()?
A weather observer at an agricultural station measures atmospheric moisture using a dry-and-wet bulb psychrometer. The dry-bulb thermometer reads while the wet-bulb thermometer reads . If the wet-bulb muslin sleeve dries out completely and is not re-moistened, what will happen to the wet-bulb temperature reading, and what parameter does the psychrometer assess when operating properly?
A meteorological officer at a weather station needs to select the appropriate instruments and standard units of measurement for recording atmospheric pressure and relative humidity. Which pair of instruments and corresponding units should be selected?
Which of the following instruments is specifically used to measure wind speed at a weather station?
A meteorological station measures atmospheric moisture levels using two adjacent thermometers mounted together inside a Stevenson screen. Which instrument utilizes a dry bulb and a wet bulb covered in damp muslin to determine relative humidity?
Match each meteorological instrument on the left with the atmospheric parameter it is designed to measure on the right.
Click a left item, then click its matching right item
Items
Matches
At a meteorological station in Jos, Nigeria, a weather observer records a maximum daily air temperature of and a minimum daily air temperature of using a Six's maximum and minimum thermometer. What is the mean daily temperature in ?
Match each weather measuring instrument on the left with its specific operational mechanism or structural feature on the right.
Click a left item, then click its matching right item
Items
Matches
During the installation of a standard Stevenson screen at a meteorological station located in West Africa (Northern Hemisphere), specific orientation rules and structural specifications are strictly enforced. Which of the following best explains why the cabinet door must open facing North, and why the enclosure walls are built with double-louvered side panels?
At a meteorological station, a weather observer uses a Campbell-Stokes recorder featuring a glass sphere that focuses sunlight onto a calibrated paper card. Which atmospheric parameter is directly measured by this instrument, and what is its standard unit of measurement?