a-scope
ablation
absolute annual range of temperature
absolute humidity
absolute instability
absolute moisture of the soil
absolute monthly maximum temperature
absolute monthly minimum temperature
absolute stability
absolute standard barometer
absolute temperature scale
absolute topography
absolute vorticity
absorbed solar radiation
absorptance
absorption band
absorption coefficient
absorption factor
absorption hygrometer
absorption line
absorption spectrum
accessory cloud
acclimatization
accretion
accumulated temperature
accumulation
accumulative raingauge
accuracy
acdar
acid deposition
acid pollution
acid precipitation
acid rain
acoustic gravity wave
acoustic sounding
acoustic thermometer
acoustic wave
actinogram
actinograph
actinometer
actinometry
actinothermic index
actual density of the soil
actual evapotranspiration
actual time of observation
adiabat
adiabatic
adiabatic atmosphere
adiabatic chart
adiabatic condensation pressure
adiabatic condensation temperature
adiabatic cooling
adiabatic diagram
adiabatic equilibrium
adiabatic lapse rate
adiabatic process
adiabatic region
adiabatic trail
adiabatic warming
adjustable cistern barometer
adsorption
advanced very high resolution radiometer (AVHRR)
advection
advection fog
advection frost
advective pressure tendency
advective thunderstorm
advisory area
advisory forecast
aeolian
aerial plankton
aerobiology
aerodrome forecast
aerodynamic trail
aerogram
aerograph
aerological analysis
aerological day
aerological diagram
aerological station
aerological table
aerology
aerometeorograph
aeronautical climatology
aeronautical meteorological service
aeronautical meteorological station
aeronautical meteorology
aeronomy
aerosol
aerosol electricity
aerosol size distribution
afterglow
ageostrophic advection
ageostrophic model
ageostrophic wind
ageostrophic wind component
agglomeration
aggregation
agricultural meteorological station
agricultural meteorological station for specific purposes
agricultural meteorology
agroclimatic index
agroclimatology
agrometeorological forecasting
agrometeorological station
agrometeorological station for specific purposes
agrometeorology
air
air conditioning
air conductivity
air density
air discharge
air mass
air meter
air parcel
air pollution
air pollution control
air report - AIREP
air sampler
air shower
air temperature
air-Earth conduction current
air-Earth current
air-mass analysis
air-mass classification
air-mass climatology
air-mass identification
air-mass thunderstorm
air-sea interaction
airborne radiation thermometer
aircraft ice accretion
aircraft icing
aircraft meteorological station
aircraft sounding
airglow
airlight
airlight formula
airport forecast
albedo
albedo of the Earth
albedograph
albedometer
alcohol thermometer
alidade
alimentation
all-sky photometer
all-weather landing
allobaric wind
aloft
alpine glow
alternate forecast
alti-electrograph
altimeter corrections
altimeter setting
altimetric equation
altitude
aluminium oxide humidity element
ambient temperature
amorphous frost
amount of precipitation
anabatic front
anabatic wind
anafront
anallobar
analogue method
analysed chart
analysed map
analysis
anemobiagraph
anemoclinometer
anemogram
anemograph
anemometer
anemometer level
anemometer mast
anemometer tower
anemometry
aneroid barometer
aneroid capsule
angel echoes
angular momentum
annual wave
anomalous propagation
anomalous propagation of sound
antarctic air
antarctic anticyclone
antarctic circumpolar current
antarctic front
antarctic sea smoke
antarctic stratospheric vortex
antecedent precipitation index
anthelic arc
anthelion
anti-hail rocket
anti-trade
anti-twilight
anticorona
anticrepuscular arch
anticrepuscular rays
anticyclogenesis
anticyclolysis
anticyclone
anticyclone movement
anticyclonic circulation
anticyclonic gloom
anticyclonic rotation
anticyclonic shear
antipleion
antiselena
antisolar point
antitriptic wind
anvil cloud
apob
apparent form of the sky
apparent wind
applied climatology
applied meteorology
aqueous vapour
arc lines
arcs of Lowitz
arctic air
arctic anticyclone
arctic front
arctic haze
arctic high
arctic sea smoke
arctic stratospheric vortex
arcus (arc)
area forecast
area of high pressure
areal precipitation
arid climate
arid zone
aridity
aridity factor
aridity index
artificial climate
artificial precipitation
artificial radioactivity
aspirated psychrometer
aspirated thermometer
aspiration meteorograph
astrometeorology
astronomical refraction
astronomical twilight
asynoptic observation
atmidometer
atmometer
atmoradiograph
atmosphere
atmosphere-ocean interaction
atmospheric
atmospheric absorption
atmospheric acoustics
atmospheric attenuation
atmospheric boundary layer
atmospheric chemistry
atmospheric circulation
atmospheric circulation model
atmospheric counterradiation
atmospheric disturbance
atmospheric dynamics
atmospheric electricity
atmospheric energetics
atmospheric extinction
atmospheric impurities
atmospheric ionization
atmospheric model
atmospheric opacity
atmospheric optics
atmospheric physics
atmospheric polarization
atmospheric pollution
atmospheric pressure
atmospheric radiation
atmospheric radiation budget
atmospheric refraction
atmospheric sciences
atmospheric structure
atmospheric thermodynamics
atmospheric tide
atmospheric turbulence
atmospheric wave
atmospheric window
attached thermometer
attenuation coefficient
attenuation of solar radiation
aureole
aurora
aurora australis
aurora borealis
auroral absorption
auroral arc
auroral bands
auroral corona
auroral curtains
auroral draperies
auroral hiss
auroral oval
auroral rays
auroral storm
auroral substorm
auroral zone
austausch coefficient
autobarotropic atmosphere
autoconvection gradient
autoconvective lapse rate
automatic climatological station
automatic data processing
automatic evaporation station
automatic picture transmission - APT
automatic weather station
auxiliary agricultural meteorological station
auxiliary ship
auxiliary ship station
available potential energy - APE
available soil moisture (Hd)
available solar radiation
avalanche
avalanche wind
average value
aviation forecast
axis of anticyclone
axis of depression
axis of ridge
axis of trough