Climatology MCQs for FPSC Meteorologist & Assistant Meteorologist

Q1. What is the approximate percentage of nitrogen in dry air by volume?

• A. 58 percent
• B. 68 percent
• C. 88 percent
• D. 78 percent

Q2. What is the approximate percentage of oxygen in dry air by volume?

• A. 31 percent
• B. 41 percent
• C. 21 percent
• D. 11 percent

Q3. Which gas, though present in small quantity, is the primary driver of the natural greenhouse effect?

• A. Argon
• B. Nitrogen
• C. Water vapour and carbon dioxide
• D. Oxygen

Q4. Which is the lowest layer of the atmosphere, where most weather phenomena occur?

• A. Thermosphere
• B. Mesosphere
• C. Troposphere
• D. Stratosphere

Q5. Approximately what fraction of total atmospheric mass lies within the troposphere?

• A. About one quarter
• B. Nearly all
• C. About half
• D. About three quarters

Q6. The boundary between the troposphere and the stratosphere is called the:

• A. Mesopause
• B. Thermopause
• C. Tropopause
• D. Stratopause

Q7. Which atmospheric layer contains the ozone layer that absorbs most harmful ultraviolet radiation?

• A. Troposphere
• B. Thermosphere
• C. Stratosphere
• D. Mesosphere

Q8. In which atmospheric layer does temperature generally decrease with increasing height?

• A. All layers equally
• B. Stratosphere
• C. Troposphere
• D. Thermosphere

Q9. In the stratosphere, temperature generally:

• A. Drops to absolute zero
• B. Remains exactly constant
• C. Increases with height due to ozone absorption
• D. Decreases with height

Q10. Which atmospheric layer is the coldest, with temperatures dropping to around minus 90 degrees Celsius?

• A. Thermosphere
• B. Stratosphere
• C. Mesosphere
• D. Exosphere

Q11. Meteors typically burn up upon entering which atmospheric layer?

• A. Stratosphere
• B. Troposphere
• C. Mesosphere
• D. Exosphere

Q12. Which atmospheric layer is also referred to as the ionosphere?

• A. Exosphere
• B. Troposphere
• C. Stratosphere
• D. Thermosphere

Q13. Which is the outermost layer of Earth’s atmosphere, gradually merging into space?

• A. Mesosphere
• B. Thermosphere
• C. Exosphere
• D. Stratosphere

Q14. The normal environmental lapse rate in the troposphere is approximately:

• A. 6.5 degrees C per 100 metres
• B. 0.065 degrees C per 100 metres
• C. 0.65 degrees C per 100 metres
• D. 65 degrees C per 100 metres

Q15. A temperature inversion occurs when:

• A. Humidity decreases sharply
• B. Temperature decreases faster than normal with height
• C. Pressure increases with height
• D. Temperature increases with height instead of decreasing

Q16. Which layer of the atmosphere is important for long-distance radio communication due to ionisation?

• A. Troposphere
• B. Mesosphere
• C. Stratosphere
• D. Ionosphere (thermosphere)

Q17. What is the primary source of energy driving Earth’s atmospheric processes?

• A. Volcanic activity
• B. Lunar gravity
• C. Solar radiation
• D. Geothermal heat

Q18. Approximately what percentage of incoming solar radiation is reflected back to space by the Earth-atmosphere system (the albedo)?

• A. About 50 percent
• B. About 70 percent
• C. About 30 percent
• D. About 10 percent

Q19. Which process describes the loss of heat from the Earth’s surface as infrared radiation at night?

• A. Convection
• B. Insolation
• C. Terrestrial (outgoing longwave) radiation
• D. Advection

Q20. The greenhouse effect refers to the atmosphere’s ability to:

• A. Reflect all solar radiation
• B. Cool the Earth’s surface
• C. Block all incoming radiation
• D. Trap outgoing longwave radiation and warm the lower atmosphere

Q21. Standard atmospheric pressure at sea level is approximately:

• A. 1200 hPa
• B. 560 mm of mercury
• C. 760 mm of mercury (1013.25 hPa)
• D. 960 mm of mercury

Q22. Atmospheric pressure generally:

• A. Remains constant with altitude
• B. Increases with altitude
• C. Is unrelated to altitude
• D. Decreases with altitude

Q23. The process of convection in the atmosphere refers to:

• A. Direct radiation transfer
• B. Heat transfer through solids
• C. Vertical transfer of heat through rising and sinking air
• D. Horizontal transfer of heat by wind

Q24. Advection in meteorology refers to:

• A. Precipitation formation
• B. Vertical movement of air
• C. Horizontal transfer of atmospheric properties such as heat or moisture by wind
• D. Radiation absorption

Q25. Wind is fundamentally caused by:

• A. Earth’s rotation alone
• B. Ocean currents
• C. Differences in atmospheric pressure between locations
• D. Lunar gravity

Q26. The force that deflects moving air due to Earth’s rotation is called:

• A. Coriolis force
• B. Centripetal force
• C. Gravitational force
• D. Pressure gradient force

Q27. In the Northern Hemisphere, the Coriolis force deflects wind to the:

• A. Right
• B. It has no effect
• C. Left
• D. Directly backward

Q28. Around a low-pressure system in the Northern Hemisphere, surface winds circulate:

• A. Clockwise
• B. Directly inward with no rotation
• C. Randomly
• D. Counter-clockwise (cyclonically)

Q29. Around a high-pressure system in the Northern Hemisphere, surface winds circulate:

• A. Counter-clockwise
• B. Clockwise (anticyclonically)
• C. There is no circulation
• D. Directly outward only

Q30. The near-equatorial belt of calm winds and rising air is known as the:

• A. Polar front
• B. Horse latitudes
• C. Roaring forties
• D. Doldrums (Intertropical Convergence Zone)

Q31. The persistent easterly winds blowing from the subtropical highs toward the equator are called:

• A. Westerlies
• B. Polar easterlies
• C. Monsoon winds
• D. Trade winds

Q32. The prevailing winds in the mid-latitudes, blowing generally from west to east, are called:

• A. Polar easterlies
• B. Doldrums
• C. Trade winds
• D. Westerlies

Q33. The subtropical belt of descending air and light, variable winds around 30 degrees latitude is called:

• A. Horse latitudes
• B. Roaring forties
• C. Polar front
• D. Doldrums

Q34. A local wind that blows from sea to land during the day, driven by differential heating, is called a:

• A. Sea breeze
• B. Land breeze
• C. Foehn wind
• D. Katabatic wind

Q35. A local wind that blows from land to sea at night is called a:

• A. Chinook wind
• B. Sea breeze
• C. Land breeze
• D. Monsoon

Q36. A warm, dry, downslope wind on the leeward side of a mountain range is generically called a:

• A. Katabatic wind
• B. Trade wind
• C. Foehn (or Chinook) wind
• D. Anabatic wind

Q37. A katabatic wind is best described as:

• A. A wind found only at sea
• B. A warm wind rising up a slope
• C. A cold, dense wind flowing downhill under gravity
• D. A wind associated only with hurricanes

Q38. An anabatic wind is best described as:

• A. A wind found only over oceans
• B. A wind flowing downslope
• C. A wind flowing upslope, driven by daytime surface heating
• D. A hurricane-force wind

Q39. The jet stream is best described as:

• A. A local mountain wind
• B. A narrow band of very strong winds in the upper troposphere
• C. A slow-moving surface wind
• D. A type of ocean current

Q40. Isobars on a weather map are lines connecting points of equal:

• A. Atmospheric pressure
• B. Wind speed
• C. Temperature
• D. Humidity

Q41. Closely spaced isobars on a weather map generally indicate:

• A. Calm, light winds
• B. Strong winds due to a steep pressure gradient
• C. No wind at all
• D. High temperature only

Q42. The Beaufort scale is used to measure:

• A. Rainfall intensity
• B. Atmospheric pressure
• C. Wind speed and its observed effects
• D. Cloud height

Q43. An anemometer is used to measure:

• A. Wind speed
• B. Humidity
• C. Air pressure
• D. Rainfall

Q44. A wind vane is used to determine:

• A. Wind direction
• B. Temperature
• C. Wind speed
• D. Air pressure

Q45. Which instrument is used to measure air temperature?

• A. Anemometer
• B. Barometer
• C. Thermometer
• D. Hygrometer

Q46. A maximum-minimum thermometer is used to record:

• A. Only the current temperature
• B. The highest and lowest temperatures over a period
• C. Wind speed and direction
• D. Only humidity

Q47. Diurnal temperature range refers to the difference between:

• A. Sea level and mountain temperatures
• B. Coastal and inland temperatures
• C. Summer and winter temperatures
• D. The day’s maximum and minimum temperatures

Q48. Diurnal temperature range tends to be greatest in which type of area?

• A. Arid, continental interior areas
• B. Areas with constant cloud cover
• C. Coastal, humid areas
• D. Polar oceans

Q49. Which factor most explains why coastal areas have a smaller temperature range than inland areas?

• A. Coastal areas have no wind
• B. Coastal areas have higher pressure
• C. Coastal areas receive less sunlight
• D. Water heats and cools more slowly than land

Q50. The point at which air becomes saturated and water vapour begins to condense is called the:

• A. Boiling point
• B. Triple point
• C. Dew point
• D. Freezing point

Q51. Relative humidity is defined as the ratio of:

• A. Temperature to pressure
• B. Wind speed to pressure
• C. Rainfall to evaporation
• D. Actual to saturation vapour content, expressed as a percentage

Q52. As air temperature rises without adding moisture, relative humidity generally:

• A. Increases
• B. Stays exactly the same
• C. Decreases
• D. Becomes zero

Q53. A hygrometer is used to measure:

• A. Rainfall
• B. Atmospheric humidity
• C. Air pressure
• D. Wind speed

Q54. A wet and dry bulb thermometer (psychrometer) is used to determine:

• A. Solar radiation intensity
• B. Wind direction
• C. Cloud height
• D. Relative humidity, from the difference between wet and dry bulb readings

Q55. Absolute zero, the theoretical lowest possible temperature, is:

• A. 0 degrees Celsius
• B. Minus 40 degrees Celsius
• C. Minus 273.15 degrees Celsius
• D. Minus 100 degrees Celsius

Q56. At what temperature are the Celsius and Fahrenheit scales numerically equal?

• A. 32 degrees
• B. 0 degrees
• C. Minus 40 degrees
• D. 100 degrees

Q57. Heat transfer through direct contact between molecules is called:

• A. Advection
• B. Conduction
• C. Radiation
• D. Convection

Q58. Heat transfer through electromagnetic waves, requiring no medium, is called:

• A. Conduction
• B. Advection
• C. Convection
• D. Radiation

Q59. Clouds are classified primarily on the basis of their:

• A. Speed of movement
• B. Temperature only
• C. Colour only
• D. Form and altitude

Q60. Cirrus clouds are typically found at which altitude?

• A. Low level
• B. High level
• C. At the surface
• D. Middle level

Q61. Which cloud type is thin, wispy and composed of ice crystals at high altitude?

• A. Stratus
• B. Nimbostratus
• C. Cumulus
• D. Cirrus

Q62. Cumulonimbus clouds are associated with:

• A. Fair weather only
• B. Clear skies
• C. Thunderstorms and severe weather
• D. Only light drizzle

Q63. Stratus clouds are best described as:

• A. Uniform, grey layered clouds covering the sky
• B. Vertically towering clouds
• C. High, wispy clouds
• D. Puffy, cotton-like clouds

Q64. Cumulus clouds are best described as:

• A. Thin and wispy
• B. Puffy, white, cotton-like clouds with flat bases
• C. Always associated with severe storms
• D. Layered and featureless

Q65. Nimbostratus clouds are primarily associated with:

• A. Fair weather
• B. Continuous, steady precipitation
• C. Clear skies only
• D. High-altitude ice crystals only

Q66. Fog is essentially a cloud that:

• A. Never contains water droplets
• B. Only forms at high altitude
• C. Forms at or near ground level
• D. Forms only over oceans

Q67. Radiation fog typically forms:

• A. Only in summer
• B. On clear, calm nights as the ground radiates heat and cools the air above it
• C. During windy afternoons
• D. Only over mountains

Q68. Advection fog forms when:

• A. Precipitation falls through dry air
• B. Warm, moist air moves horizontally over a cooler surface
• C. Air rises rapidly over mountains
• D. The ground radiates heat at night

Q69. Precipitation is generally defined as:

• A. Only rainfall
• B. Only snow
• C. Any cloud formation
• D. Water in liquid or solid form falling from clouds to the Earth’s surface

Q70. Which process describes small cloud droplets colliding and merging to form larger raindrops?

• A. Coalescence
• B. Deposition
• C. Sublimation
• D. Evaporation

Q71. The Bergeron process of precipitation formation relies primarily on the coexistence of:

• A. Ice crystals and supercooled water droplets
• B. Only water droplets
• C. Only dust particles
• D. Only ice crystals

Q72. Sleet is best described as:

• A. Large hailstones
• B. Frozen raindrops that reach the ground as ice pellets
• C. Freezing fog
• D. Soft, fluffy snow

Q73. Hail forms through a process involving:

• A. Strong updrafts in cumulonimbus clouds repeatedly lifting ice particles through supercooled layers
• B. Simple freezing of still raindrops
• C. Fog condensation
• D. Only radiational cooling

Q74. Drizzle differs from rain primarily in that drizzle consists of:

• A. Larger droplets falling faster
• B. Only occurring at night
• C. Very small droplets, generally under 0.5 mm, falling slowly
• D. Frozen precipitation only

Q75. A rain gauge is used to measure:

• A. Wind speed
• B. Cloud cover
• C. Humidity
• D. The amount of precipitation

Q76. Virga refers to precipitation that:

• A. Evaporates before reaching the ground
• B. Falls only as snow
• C. Occurs only in fog
• D. Reaches the ground as hail

Q77. Orographic precipitation is caused primarily by:

• A. Sea breeze circulation
• B. Frontal boundaries only
• C. Air being forced to rise over a mountain barrier, cooling and condensing
• D. Convective heating alone

Q78. The dry region on the leeward side of a mountain range, resulting from orographic effects, is called a:

• A. Monsoon trough
• B. Rain shadow
• C. Doldrum belt
• D. Frontal zone

Q79. Convective precipitation is typically associated with:

• A. Localised, often intense showers from vertically developed clouds
• B. Slow, steady, widespread rain
• C. Only snowfall
• D. Only drizzle

Q80. Frontal precipitation occurs primarily:

• A. Only over oceans
• B. Only at the equator
• C. Along the boundary where air masses of different temperature and density meet
• D. Only in deserts

Q81. A barometer is used to measure:

• A. Rainfall
• B. Temperature
• C. Wind speed
• D. Atmospheric pressure

Q82. A mercury barometer measures pressure based on the height of a column of mercury supported by:

• A. Wind force
• B. Solar radiation
• C. Atmospheric pressure
• D. Gravity alone

Q83. An aneroid barometer measures pressure using:

• A. A wind vane
• B. A rain gauge
• C. A sealed, flexible metal capsule that expands and contracts with pressure changes
• D. A mercury column

Q84. A barograph is essentially:

• A. A cloud height sensor
• B. A self-recording barometer that continuously charts pressure over time
• C. A device to measure wind speed only
• D. A rain gauge

Q85. A radiosonde is:

• A. A hand-held anemometer
• B. A ground-based rain gauge
• C. A type of satellite
• D. An instrument package carried by a weather balloon to measure upper-air conditions

Q86. A weather balloon carrying a radiosonde primarily provides data on:

• A. Ocean currents
• B. Soil moisture
• C. Only surface wind
• D. Vertical profile of the atmosphere (upper-air soundings)

Q87. A ceilometer is used to measure:

• A. Wind speed
• B. The height of cloud base (cloud ceiling)
• C. Rainfall intensity
• D. Air pressure

Q88. Weather radar primarily detects:

• A. Precipitation, based on reflected radio wave energy
• B. Only cloud colour
• C. Only temperature
• D. Only wind direction

Q89. Doppler radar, an advanced form of weather radar, additionally provides information on:

• A. Ocean salinity
• B. The motion of precipitation particles toward or away from the radar (indicating wind and rotation)
• C. Cloud colour
• D. Soil temperature

Q90. Meteorological satellites primarily provide data through:

• A. Underground sensors
• B. Direct surface measurement only
• C. Remote sensing of clouds, temperature and moisture from orbit
• D. Ocean buoys only

Q91. A geostationary satellite maintains its position by:

• A. Orbiting at an altitude and speed matching Earth’s rotation, appearing fixed over one location
• B. Remaining stationary without orbiting
• C. Orbiting at very low altitude
• D. Orbiting the poles only

Q92. Polar-orbiting satellites, compared with geostationary satellites, typically provide:

• A. No useful weather data
• B. Only ocean data
• C. Higher-resolution global coverage by passing over different areas as Earth rotates beneath them
• D. Continuous imagery of one fixed region

Q93. A Stevenson screen (or Stevenson box) is used to:

• A. Detect lightning
• B. House thermometers and hygrometers, shielding them from direct sun and precipitation
• C. Measure rainfall
• D. Measure wind speed directly

Q94. A sunshine recorder is used to measure:

• A. The duration of bright sunshine during a day
• B. Wind speed
• C. Air pressure
• D. Cloud height

Q95. A lysimeter is used primarily to measure:

• A. Wind speed
• B. Barometric pressure
• C. Evapotranspiration and soil water balance
• D. Cloud cover

Q96. An automatic weather station (AWS) differs from a conventional station mainly in that it:

• A. Collects and transmits data automatically without a human observer present
• B. Only measures rainfall
• C. Cannot measure temperature
• D. Requires no instruments

Q97. Synoptic weather observations refer to:

• A. Observations taken at a single station over a year
• B. Observations taken simultaneously at many stations at fixed standard times, to give a snapshot of weather over a wide area
• C. Only satellite images
• D. Only radar data

Q98. METAR is a standardised format used primarily for reporting:

• A. Routine surface weather observations at airports
• B. Long-range climate forecasts
• C. Only earthquake data
• D. Only ocean wave heights

Q99. An air mass is best defined as:

• A. A local wind
• B. A single cloud formation
• C. A type of precipitation
• D. A large body of air with fairly uniform temperature and humidity throughout

Q100. A maritime tropical air mass typically brings:

• A. Cold, dry conditions
• B. Warm, humid conditions
• C. Only snow
• D. Extremely dry desert air

Q101. A continental polar air mass typically brings:

• A. Heavy monsoon rain
• B. Warm, humid conditions
• C. Cold, dry conditions
• D. Tropical humidity

Q102. A weather front is best defined as:

• A. The centre of a high-pressure system
• B. A type of cloud
• C. The boundary zone between two air masses of different temperature and density
• D. A wind measurement device

Q103. A cold front occurs where:

• A. Cold, dense air actively advances and displaces warmer air ahead of it
• B. Warm air is stationary
• C. Only high pressure exists
• D. Two air masses are identical

Q104. A warm front occurs where:

• A. Cold air displaces warm air rapidly
• B. No air movement occurs
• C. Warm air advances and gradually rises over a retreating mass of cooler air
• D. Only clear skies result

Q105. Weather associated with a passing cold front is typically:

• A. Always dry and clear
• B. Prolonged, gentle and widespread
• C. Brief but often intense, with sharp temperature drop and possible thunderstorms
• D. Only light drizzle

Q106. An occluded front forms when:

• A. Two warm fronts meet
• B. Air pressure is uniform
• C. No fronts are present
• D. A cold front catches up with and overtakes a warm front

Q107. A stationary front is one in which:

• A. Neither air mass is advancing significantly, so the boundary remains largely in place
• B. Only warm air is present
• C. No temperature contrast exists
• D. The boundary is moving rapidly

Q108. A cyclone is fundamentally a system of:

• A. High pressure with outward winds
• B. No pressure variation
• C. Only clear, calm weather
• D. Low pressure with inward, rotating winds

Q109. An anticyclone is fundamentally a system of:

• A. Only precipitation
• B. Low pressure with inward winds
• C. Only thunderstorms
• D. High pressure with outward, diverging winds

Q110. The centre of a well-developed tropical cyclone, characterised by calm conditions, is called the:

• A. Eye
• B. Front
• C. Eyewall
• D. Rainband

Q111. The region of most intense winds and rainfall in a tropical cyclone is the:

• A. Eye
• B. Eyewall
• C. Outer rainbands
• D. Tail

Q112. Tropical cyclones over the Arabian Sea affecting Pakistan’s coast typically form during which seasons?

• A. Only during peak summer monsoon
• B. Only in January
• C. Only winter
• D. Pre-monsoon (April-June) and post-monsoon (October-December)

Q113. Which basic condition is essential for tropical cyclone formation?

• A. Warm ocean surface water, typically above about 26-27 degrees Celsius
• B. Cold ocean surface water
• C. High-altitude desert conditions
• D. Land surface only

Q114. Tropical cyclones derive their primary energy from:

• A. Ocean currents alone
• B. Wind friction with land
• C. Solar radiation directly on the storm
• D. Latent heat released as water vapour condenses

Q115. In the Arabian Sea and Bay of Bengal region, a tropical cyclone is generically termed a:

• A. Cyclone
• B. Typhoon
• C. Willy-willy
• D. Hurricane

Q116. PMD’s Tropical Cyclone Warning Centre, responsible for Arabian Sea cyclones, is located in:

• A. Quetta
• B. Karachi
• C. Islamabad
• D. Lahore

Q117. The monsoon is best described as:

• A. A single storm event
• B. A local sea breeze
• C. A seasonal reversal of wind direction, bringing markedly different wet and dry seasons
• D. A type of cold front

Q118. Pakistan’s summer (southwest) monsoon typically arrives between:

• A. July and September
• B. December and February
• C. March and April
• D. October and November

Q119. The primary driver of the South Asian summer monsoon is:

• A. Polar jet stream only
• B. Ocean currents alone
• C. Differential heating between the Asian landmass and the surrounding Indian Ocean
• D. Volcanic activity

Q120. Compared to the summer monsoon, Pakistan’s winter rainfall is primarily associated with:

• A. Tropical cyclones
• B. Western disturbances originating from the Mediterranean region
• C. Local sea breezes only
• D. The same monsoon system

Q121. Western disturbances are particularly important for which activity in Pakistan?

• A. Winter wheat cultivation and snowfall in northern mountains
• B. Cotton picking
• C. Kharif crop irrigation
• D. Rice transplanting

Q122. A monsoon depression is best described as:

• A. A low-pressure weather system embedded within the monsoon flow, often bringing heavy rainfall
• B. A cold front in winter
• C. A permanent high-pressure system
• D. A type of drought

Q123. A break in the monsoon refers to a period when:

• A. Rainfall is unusually intense everywhere
• B. Winter begins
• C. The monsoon season ends early
• D. The main rain belt shifts away, causing a temporary lull in monsoon rainfall over a region

Q124. A thunderstorm requires which three basic ingredients?

• A. Only high humidity
• B. Moisture, instability (rising warm air) and a lifting mechanism
• C. Cold air, dry conditions, high pressure
• D. Only wind and clouds

Q125. The three recognised stages of a typical thunderstorm’s life cycle are:

• A. Formation, dissipation, reformation
• B. Only mature and dissipating
• C. Cumulus (developing), mature and dissipating stages
• D. Eye, eyewall and outer band

Q126. Lightning is fundamentally:

• A. A sudden electrical discharge caused by charge separation within a thunderstorm cloud
• B. A sound phenomenon
• C. A type of precipitation
• D. Caused only by wind friction with the ground

Q127. Thunder is caused by:

• A. Rain hitting the ground
• B. The rapid expansion of air heated explosively by a lightning discharge
• C. Cloud collision
• D. Wind moving through clouds

Q128. A tornado is best described as:

• A. A large-scale monsoon depression
• B. A violently rotating column of air extending from a thunderstorm cloud to the ground
• C. A type of hailstorm
• D. A slow-moving area of low pressure over the ocean

Q129. On the Fujita (or Enhanced Fujita) scale, tornado intensity is rated based primarily on:

• A. Duration of the tornado
• B. Wind speed measured directly at the funnel
• C. Colour of the funnel cloud
• D. Assessed damage to structures and vegetation

Q130. A dust storm typically develops when:

• A. Heavy rain saturates the ground
• B. Only over oceans
• C. Strong, gusty winds lift loose, dry soil and sand into the air, often ahead of a thunderstorm or cold front
• D. Only at night in calm conditions

Q131. A haboob is a specific type of:

• A. Blizzard
• B. Tornado
• C. Intense dust storm caused by a thunderstorm’s collapsing downdraft
• D. Hailstorm

Q132. A heat wave is generally defined as:

• A. Rainfall during summer
• B. A prolonged period of excessively high temperatures, often with high humidity, relative to the normal climate of a region
• C. Any single hot day
• D. A type of cold front

Q133. A cold wave is generally defined as:

• A. A type of drought
• B. A rapid, significant fall in temperature within a short period, often accompanied by strong wind and cold air advection
• C. Heavy monsoon rainfall
• D. A period of warm weather in winter

Q134. A blizzard is characterised by:

• A. Only rain and fog
• B. Light snow with no wind
• C. Only cold temperatures with clear skies
• D. Heavy snowfall combined with strong sustained winds and low visibility

Q135. Numerical Weather Prediction (NWP) uses:

• A. Only historical averages
• B. Mathematical models of the atmosphere run on computers to project future weather states
• C. Only human intuition
• D. Only satellite images without computation

Q136. A synoptic weather chart primarily displays:

• A. Only satellite cloud photographs
• B. Pressure patterns, fronts and other features across a wide area at a specific time
• C. Only radar imagery
• D. Only local temperature readings

Q137. Nowcasting refers to forecasting for which time range?

• A. Decades-long climate projections
• B. Very short term, typically up to a few hours ahead
• C. Seasonal outlooks months ahead
• D. Only the current instant, with no future projection

Q138. Persistence forecasting is a simple method based on the assumption that:

• A. Only computer models are reliable
• B. Current weather conditions will continue largely unchanged into the near future
• C. Historical averages always apply
• D. Weather will change completely tomorrow

Q139. Ensemble forecasting involves:

• A. Using only satellite data
• B. Running a single deterministic model once
• C. Running multiple model simulations with slightly varied starting conditions to assess forecast uncertainty
• D. Ignoring computer models entirely

Q140. Aviation meteorology is primarily concerned with providing weather information relevant to:

• A. Only urban flood warning
• B. Safe and efficient aircraft operations, including takeoff, en-route and landing conditions
• C. Only maritime shipping
• D. Only agriculture

Q141. TAF (Terminal Aerodrome Forecast) is a standardised format for:

• A. Reporting current conditions only
• B. Reporting only wind speed
• C. Reporting seismic activity
• D. Forecasting expected weather conditions at an airport over a specified future period

Q142. A weather warning differs from a weather watch in that a warning indicates:

• A. Only a seasonal outlook
• B. No difference at all
• C. Lower confidence than a watch
• D. Higher confidence that hazardous weather is imminent or already occurring

Q143. Climate is best distinguished from weather in that climate refers to:

• A. The average weather conditions of a region over a long period, typically 30 years
• B. Only extreme events
• C. Only temperature, excluding rainfall
• D. Conditions at a single moment

Q144. The Koppen climate classification system categorises climates primarily based on:

• A. Soil type only
• B. Population density
• C. Temperature and precipitation patterns, along with their seasonal distribution
• D. Elevation alone

Q145. In the Koppen classification, which letter designates tropical climates?

• A. B
• B. A
• C. D
• D. C

Q146. In the Koppen classification, which letter designates arid (dry) climates?

• A. C
• B. A
• C. E
• D. B

Q147. Latitude affects climate primarily by influencing:

• A. Air pressure alone
• B. The angle and intensity of incoming solar radiation
• C. Ocean salinity
• D. Soil fertility directly

Q148. Altitude generally affects temperature such that, all else equal, higher elevations are:

• A. Cooler than lower elevations nearby, following the general lapse rate
• B. Unaffected by elevation
• C. Warmer than lower elevations nearby
• D. Only affected in winter

Q149. Continentality refers to the climatic effect of:

• A. Proximity to the ocean, moderating temperature extremes
• B. Altitude alone
• C. Distance from large water bodies, which increases temperature extremes
• D. Latitude alone

Q150. Ocean currents affect coastal climates primarily by:

• A. Having no thermal effect
• B. Transporting warm or cool water that moderates adjacent land temperatures
• C. Only affecting rainfall, not temperature
• D. Only affecting inland areas

Q151. A microclimate refers to:

• A. Only polar climate
• B. Climatic conditions in a small, localised area that differ from the surrounding region
• C. The climate of an entire continent
• D. Only ocean climate

Q152. The urban heat island effect refers to:

• A. A type of tropical cyclone
• B. A seasonal wind pattern
• C. Cities being cooler than surrounding rural areas
• D. Urban areas being significantly warmer than surrounding rural areas, due to human activity and infrastructure

Q153. A climate normal, as used by meteorological agencies, is typically calculated over a period of:

• A. 30 years
• B. 10 years
• C. 1 year
• D. 100 years

Q154. El Nino refers to:

• A. A periodic warming of sea surface temperatures in the central and eastern tropical Pacific Ocean
• B. A cold-water anomaly in the eastern Pacific
• C. A permanent climate state
• D. A type of monsoon in South Asia

Q155. La Nina refers to:

• A. A type of cyclone
• B. A local wind in Pakistan
• C. A periodic cooling of sea surface temperatures in the central and eastern tropical Pacific Ocean, the opposite phase to El Nino
• D. The same phenomenon as El Nino

Q156. El Nino events have been associated with which effect on South Asian monsoon rainfall?

• A. No relationship at all
• B. Only affecting winter rainfall
• C. Often being associated with weaker or below-normal monsoon rainfall
• D. Consistently enhancing monsoon rainfall

Q157. Pakistan’s overall climate is best described as:

• A. Polar
• B. Tropical rainforest
• C. Predominantly arid to semi-arid, with regional variation
• D. Uniformly humid subtropical

Q158. How many broad seasons are conventionally recognised in Pakistan’s climate?

• A. Two
• B. Four
• C. Eight
• D. Six

Q159. Which region of Pakistan generally receives the highest annual rainfall?

• A. The Thar desert
• B. Central Sindh
• C. Coastal Balochistan
• D. Northern mountainous areas (Murree, Galliyat and Kashmir foothills)

Q160. Which region of Pakistan is generally the driest?

• A. Northern Punjab
• B. Coastal Karachi
• C. The Kashmir foothills
• D. Parts of Balochistan and the Thar desert of Sindh

Q161. Which city is often cited as having recorded some of the highest temperatures in Pakistan (and globally)?

• A. Skardu
• B. Gilgit
• C. Murree
• D. Jacobabad

Q162. Which broad climatic zone characterises the Balochistan plateau?

• A. Equatorial
• B. Arid, characterised by hot summers and cold winters with low rainfall
• C. Polar tundra
• D. Tropical humid

Q163. Which climatic classification best describes the northern mountainous regions of Pakistan such as Gilgit-Baltistan?

• A. Hot desert
• B. Humid subtropical
• C. Tropical
• D. Alpine/highland, with cold winters and glaciers

Q164. Pakistan’s glaciers, concentrated in the Karakoram, Hindu Kush and Himalaya ranges, are significant because they:

• A. Have no effect on river flow
• B. Feed the Indus river system through seasonal melt, especially in summer
• C. Only affect local tourism
• D. Are unrelated to agriculture

Q165. The Karakoram range, part of northern Pakistan, is notable in climate science for exhibiting:

• A. Only seasonal snow with no permanent ice
• B. Uniform glacier retreat matching global trends
• C. No glaciers at all
• D. The ‘Karakoram Anomaly’, where many glaciers have shown stability or slight advance despite global warming

Q166. Which Pakistani city’s climate is most directly moderated by the Arabian Sea?

• A. Peshawar
• B. Quetta
• C. Multan
• D. Karachi

Q167. Average annual rainfall over most of the Indus plains of Pakistan is best described as:

• A. Low, generally well below crop water requirements, necessitating irrigation
• B. Uniformly distributed through the year
• C. Entirely from winter snowfall
• D. Very high, exceeding 2000 mm

Q168. Global warming refers primarily to:

• A. Seasonal temperature changes
• B. The long-term increase in Earth’s average surface temperature, largely attributed to increased greenhouse gas concentrations
• C. Short-term daily temperature fluctuation
• D. Only urban heat island effects

Q169. Which gas is generally considered the largest single contributor to anthropogenic (human-caused) global warming?

• A. Nitrogen
• B. Carbon dioxide
• C. Oxygen
• D. Argon

Q170. Which is considered a highly potent greenhouse gas, though present in much smaller atmospheric quantities than carbon dioxide?

• A. Nitrogen
• B. Methane
• C. Argon
• D. Oxygen

Q171. The Intergovernmental Panel on Climate Change (IPCC) is primarily responsible for:

• A. Assessing and synthesising scientific research on climate change for policymakers
• B. Forecasting daily weather
• C. Setting global emissions targets by decree
• D. Operating weather satellites

Q172. Pakistan is frequently cited by international climate risk indices as being:

• A. Among the countries most vulnerable to climate change impacts, despite contributing a small share of global emissions
• B. Among the least vulnerable countries to climate change
• C. Entirely unaffected by climate change
• D. Only affected by sea level rise

Q173. Sea level rise, a consequence of global warming, results primarily from:

• A. Thermal expansion of ocean water and melting of land-based ice (glaciers and ice sheets)
• B. Ocean currents changing direction
• C. Increased rainfall alone
• D. Increased evaporation only

Q174. Climate change adaptation refers to:

• A. Ignoring climate risks
• B. Reducing greenhouse gas emissions
• C. Only international treaties
• D. Adjusting practices and infrastructure to cope with the effects of a changing climate

Q175. Climate change mitigation refers to:

• A. Weather forecasting
• B. Efforts to reduce or prevent the emission of greenhouse gases
• C. Adjusting to climate impacts after they occur
• D. Only disaster relief

Q176. Glacial Lake Outburst Floods (GLOFs), a growing hazard in northern Pakistan, occur when:

• A. Rainfall alone causes river flooding
• B. A glacial lake’s natural barrier (often ice or moraine) fails suddenly, releasing a large volume of water
• C. A dam is deliberately opened
• D. A cyclone makes landfall

Q177. Hydrometeorology is best defined as the study of:

• A. Only wind patterns
• B. The interaction between atmospheric processes and the water cycle on land, including floods
• C. Only ocean currents
• D. Only earthquake activity

Q178. River flood forecasting relies primarily on combining:

• A. Only wind speed data
• B. Rainfall and snowmelt data with river discharge and catchment characteristics
• C. Only historical river levels
• D. Only satellite imagery of clouds

Q179. A flash flood is distinguished from a regular river flood primarily by its:

• A. Occurrence only in winter
• B. Very slow onset over weeks
• C. Rapid onset, typically within hours of intense rainfall, especially in steep or urban catchments
• D. Association only with tropical cyclones

Q180. Which of Pakistan’s rivers is most closely associated with catastrophic flooding events historically monitored by PMD’s flood forecasting systems?

• A. Only groundwater aquifers
• B. Only small hill torrents
• C. The Indus and its major tributaries (Jhelum, Chenab, Ravi, Sutlej)
• D. Only coastal creeks

Q181. A flood forecasting and warning system typically issues alerts based on river levels reaching which reference points?

• A. Established danger levels or thresholds at key gauging stations along the river
• B. Only rainfall totals with no river data
• C. Only satellite cloud cover
• D. Random arbitrary numbers

Q182. Catchment area (or drainage basin) refers to:

• A. The total land area that drains rainfall and runoff into a particular river or water body
• B. A type of cloud
• C. A weather instrument
• D. A type of front

Q183. Urban flooding is often worsened by which characteristic of built-up areas?

• A. Extensive natural vegetation
• B. Very low population density
• C. Impervious surfaces such as concrete and asphalt that increase runoff and reduce infiltration
• D. Absence of drainage infrastructure needs

Q184. Which agency in Pakistan coordinates overall disaster response, working alongside PMD’s early warning information?

• A. IRSA
• B. SUPARCO
• C. PCRWR
• D. National Disaster Management Authority (NDMA)

Q185. Remote sensing in meteorology refers to the technique of:

• A. Only weather balloon data
• B. Only manual ground observation
• C. Interviewing local residents about weather
• D. Acquiring information about the atmosphere and surface without direct physical contact, typically via satellite or radar

Q186. Passive remote sensing instruments work by:

• A. Emitting their own energy and measuring the return signal
• B. Only measuring sound waves
• C. Detecting naturally emitted or reflected radiation, such as sunlight reflected by clouds
• D. Requiring direct surface contact

Q187. Active remote sensing instruments, such as radar, work by:

• A. Only receiving natural radiation
• B. Emitting their own signal and measuring the energy reflected back
• C. Only detecting sound
• D. Never being used in meteorology

Q188. GIS (Geographic Information System) is used in meteorology and hydrology primarily to:

• A. Integrate, analyse and visualise spatial data such as rainfall distribution, flood extent and catchment characteristics
• B. Replace all field observations
• C. Only measure temperature
• D. Only forecast earthquakes

Q189. Infrared satellite imagery is particularly useful in meteorology for estimating:

• A. Only ground-level humidity
• B. Only ocean salinity
• C. Only wind direction
• D. Cloud-top temperature, which relates to cloud height and storm intensity

Q190. Visible satellite imagery relies on:

• A. Ground-based sensors only
• B. Thermal emission from clouds
• C. Radio wave reflection
• D. Reflected sunlight, and is therefore only useful during daylight hours

Q191. Agrometeorology is the applied science concerned with:

• A. Only ocean weather
• B. Only aviation safety
• C. Only urban weather forecasting
• D. The relationship between weather/climate conditions and agricultural production

Q192. Growing Degree Days (GDD), used in agrometeorology, is a measure of:

• A. Accumulated heat units above a base temperature, used to predict crop development stages
• B. Total rainfall received
• C. Soil pH
• D. Wind speed over a season

Q193. Agrometeorological advisories issued by PMD’s National Agromet Centre primarily aim to help farmers with decisions such as:

• A. Only fertilizer pricing
• B. Only land ownership records
• C. Timing of sowing, irrigation and harvesting based on weather forecasts
• D. Only crop insurance claims

Q194. Frost warnings issued by meteorological agencies are particularly critical for protecting:

• A. Sensitive crops that can suffer significant damage from sub-zero temperatures, especially during flowering or fruit-set stages
• B. Only stored grain
• C. Only livestock
• D. Only irrigation infrastructure

Q195. Drought, from an agrometeorological perspective, is best understood as:

• A. Unrelated to soil moisture
• B. A prolonged deficiency in precipitation relative to normal, sufficient to cause significant agricultural or hydrological impact
• C. Only a summer phenomenon
• D. Any period without rain, however short

Q196. Which climate classification zone is characterised by average temperatures above 18 degrees Celsius in every month of the year?

• A. Temperate
• B. Polar
• C. Arid
• D. Tropical (Type A)

Q197. A Mediterranean climate is characterised by:

• A. Uniform rainfall year-round
• B. Dry summers and mild, wet winters
• C. Wet summers and dry winters
• D. Extreme cold throughout the year

Q198. Which of these is a recognised polar climate type in the Koppen system?

• A. Steppe
• B. Monsoon
• C. Tundra
• D. Savanna

Q199. Permafrost refers to:

• A. Seasonal frost only
• B. Any frozen lake
• C. Ground that remains permanently frozen for two or more consecutive years
• D. Frozen ocean water only

Q200. A steppe climate is best described as a:

• A. Very wet tropical climate
• B. Semi-arid climate with grassland vegetation, transitional between desert and more humid climates
• C. Coastal Mediterranean climate
• D. Polar ice climate

Q201. The Intertropical Convergence Zone (ITCZ) shifts seasonally, generally following the position of:

• A. The jet stream only
• B. Ocean currents alone
• C. The zone of maximum solar heating (near-overhead sun)
• D. Fixed pressure belts that never move

Q202. Which factor most directly explains why equatorial regions receive intense, frequent rainfall?

• A. Constant high pressure
• B. Cold ocean currents
• C. Rising warm, moist air associated with the ITCZ, leading to frequent convective rainfall
• D. Absence of humidity

Q203. A continental climate, as found in the interior of large landmasses, is characterised by:

• A. Small temperature range year-round
• B. No seasonal variation
• C. Constant high humidity
• D. Large seasonal temperature range, with hot summers and cold winters

Q204. Which of these best describes a humid subtropical climate?

• A. Hot, humid summers and mild winters, often with rainfall spread through the year
• B. Cold and dry year-round
• C. Polar with permanent ice
• D. Extremely arid with no rainfall

Q205. Rainfall variability refers to:

• A. A fixed constant for all regions
• B. The degree to which rainfall differs from the long-term average from year to year
• C. Only the timing of monsoon onset
• D. The average annual total only

Q206. Which term describes the long-term average precipitation and temperature pattern used to define a location’s climate?

• A. Synoptic chart
• B. Climate normal
• C. Weather forecast
• D. Nowcast

Q207. Foehn-type warming events in Pakistan’s northern valleys can cause:

• A. Sudden localised temperature drops only
• B. No effect on local weather
• C. Rapid, localised temperature rises and reduced humidity as air descends the leeward slope
• D. Only increased rainfall

Q208. Precipitation efficiency in convective clouds refers to:

• A. Cloud colour
• B. Wind speed within the cloud
• C. The proportion of condensed water that actually falls as precipitation rather than evaporating or remaining suspended
• D. The total volume of a cloud

Q209. The term ‘onset of monsoon’ refers to:

• A. The date on which sustained monsoon rainfall begins over a given region
• B. The final day of monsoon rainfall
• C. Winter rainfall commencement
• D. A type of cyclone

Q210. ‘Withdrawal of monsoon’ refers to:

• A. Cyclone dissipation
• B. A type of drought
• C. The beginning of monsoon rains
• D. The retreat of the monsoon current and cessation of the rainy season over a region

Q211. Which of the following is classified as a mesoscale weather system, intermediate in size between a single thunderstorm and a large synoptic system?

• A. The jet stream
• B. A tropical cyclone
• C. A Mesoscale Convective System (MCS)
• D. A global climate pattern

Q212. Diurnal variation of cloud cover over land in summer often shows:

• A. Maximum cloud at dawn
• B. No pattern at all
• C. Only nighttime cloud formation
• D. Increasing convective cloud development through the afternoon as surface heating peaks

Q213. A polar front is the boundary between:

• A. Desert and coastal air only
• B. Only oceanic air masses
• C. Cold polar air and warmer mid-latitude air
• D. Two tropical air masses

Q214. Rossby waves in the upper atmosphere are large-scale meanders in the:

• A. Ozone layer only
• B. Ocean surface
• C. Troposphere’s lowest layer only
• D. Jet stream, influencing the movement of weather systems

Q215. Sea surface temperature (SST) anomalies are important in forecasting because they:

• A. Only affect marine life
• B. Are always constant
• C. Can significantly influence atmospheric circulation and rainfall patterns over connected land regions
• D. Have no influence on the atmosphere

Q216. A teleconnection in climatology refers to:

• A. A local weather event
• B. A weather instrument
• C. A type of satellite communication
• D. A statistical link between climate anomalies occurring in widely separated regions of the globe

Q217. The Indian Ocean Dipole (IOD) refers to:

• A. A type of cyclone only
• B. An irregular oscillation of sea surface temperatures between the western and eastern Indian Ocean, affecting regional rainfall
• C. A fixed ocean current
• D. A seismic phenomenon

Q218. Which season in Pakistan is generally associated with the highest frequency of dust storms in the plains?

• A. Winter (December-February)
• B. Autumn (October-November)
• C. Late monsoon (September)
• D. Pre-monsoon summer (April-June)

Q219. An occluded cyclone in mid-latitude weather systems is typically in which stage of its life cycle?

• A. A mature to late stage, as the cold front catches up with the warm front
• B. Never reaches occlusion
• C. Just forming
• D. Only the initial formation stage

Q220. Which best describes ‘orographic enhancement’ of rainfall?

• A. Rainfall reduction over flat terrain
• B. Rainfall occurring only at sea level
• C. An increase in rainfall amount caused by air being forced upward over elevated terrain
• D. A decrease in rainfall due to mountains

Q221. A ‘cloudburst’ refers to:

• A. A type of cloud shape
• B. Continuous light rain over days
• C. Light drizzle
• D. A sudden, extremely intense, short-duration burst of very heavy rainfall over a small area

Q222. The term ‘onset vigour’ in monsoon forecasting refers to:

• A. The intensity and abruptness with which the monsoon rains begin over a region
• B. Wind direction only
• C. The colour of monsoon clouds
• D. A type of cyclone

Q223. Which of the following best explains why Balochistan generally receives less rainfall than northern Punjab?

• A. It has no mountains at all
• B. It lies largely outside the main paths of both the summer monsoon and winter western disturbances, and is shielded by mountain ranges
• C. It is at a much higher latitude
• D. It is closer to the equator

Q224. A ‘blocking high’ in synoptic meteorology refers to:

• A. A persistent, quasi-stationary high-pressure system that disrupts the normal west-to-east progression of weather systems
• B. A type of tornado
• C. A fast-moving low-pressure system
• D. A coastal wind pattern

Q225. Snowline refers to:

• A. Only the boundary of a glacier
• B. A type of cloud boundary
• C. The elevation above which snow cover persists on the ground for a significant part of the year
• D. Sea level everywhere

Q226. An ‘orographic cloud’ is one that forms primarily due to:

• A. Radiative cooling at night
• B. Air being forced to rise over elevated terrain, cooling to saturation
• C. Convective heating over flat land only
• D. Frontal lifting only

Q227. Which broad description best fits Pakistan’s spring transitional season?

• A. Consistently the wettest period of the year
• B. A short warming period between winter and the pre-monsoon hot season, with increasing temperature and occasional western disturbance activity
• C. The coldest period of the year
• D. Identical to peak monsoon conditions

Q228. Standard climatological data records maintained by meteorological departments typically span a minimum recommended period of:

• A. 10 years
• B. 30 years
• C. 5 years
• D. 100 years

Q229. Interannual climate variability refers to:

• A. A constant, unchanging pattern
• B. Year-to-year fluctuation in climate variables such as rainfall or temperature, often linked to phenomena like ENSO
• C. Variation within a single day
• D. Variation over geological timescales only

Q230. Which of the following best defines ‘aridity index’?

• A. A ratio comparing precipitation to potential evapotranspiration, used to classify the dryness of a climate
• B. Total annual rainfall alone
• C. Temperature range only
• D. Wind speed average

Q231. Which of these instruments/methods provides the longest continuous historical climate record for a fixed location?

• A. Satellite imagery (since 1960s)
• B. Long-running ground-based weather station observations, some dating back over a century
• C. Weather balloons only
• D. Weather radar (since mid-20th century)

Q232. A ‘heat index’ combines air temperature with which other variable to estimate perceived heat stress?

• A. Relative humidity
• B. Atmospheric pressure
• C. Cloud cover
• D. Wind speed

Q233. A ‘wind chill’ index combines air temperature with which variable to estimate perceived cold?

• A. Cloud cover
• B. Humidity
• C. Solar radiation
• D. Wind speed