The temperature to which air be cooled at constant pressure to become saturated, is called

Free air temperature, Wet bulb temperature and Dew point temperature are equal when

On a rainy day compared to sunny day the length of runway required is

The spread (difference) between Free air temperature and Dew point temperature is............when air is saturated

The saturation vapour pressure over water is..............greater than the ice

As the temperature of the air increases, the amount of water vapour required to saturate it

The actual amount of water vapour contained in a given volume of air at a given temperature is termed as

Humidity Mixing Ratio..............when air is lifted adiabatically

It is the lowest temperature which air would attain by evaporating water into it to saturate it.

In S hemisphere if an observer faces wind, low will be to his

In N hemisphere due to rotation of earth winds are deflected to

Local Winds follow Buys Ballot's law

Coriolis force acts perpendicular to the.............of wind direction in N hemisphere

Geostrophic wind is due to the balance between the forces

Coriolis force is strongest at

Geostrophic rule breaks down at

Fohn winds are.............on the Leeward side of a mountain,

The wind sliding down a hill during night is called.............wind.

With the onset of sea breeze there is a...........in temperature and.........in RH.

Sea breeze sets in by.............and dies off at.............

If an aircraft in Nhemisphere flies from H to L it will experience

In NHemisphere if you experience Port drift, altimeter will read

Lines of constant wind speed drawn on weather charts are called

Squall are distinguished from gusts by

The thermal wind is

On a weather map where isobars are closely packed, the surface winds are likely to be

Anabatic wind occurs

Anabatic wind is stronger than katabatic

Katabatic wind is down slope cold wind due to nocturnal cooling

Katabatic wind occur due to sinking of air down the hill slope

Anabatic wind occur due to downward movement of air along valley

Sea breeze is stronger than land breeze

The wind blows clockwise around low in a Nhemisphere

The wind blows clockwise around low in S hemisphere

The wind blows anticlockwise around low in Nhemisphere

The wind blows anticlockwise around low in S hemisphere

The resultant wind that blows under the influence of pressure gradient force, geostrophic force and cyclostrophic force is called

Due to friction, from day to night for an isobaric pattern (in N hemisphere) the Surface wind backs and weakens

The winds which spiral inward in a counterclockwise direction in the N Hemisphere are associated with

Lower level wind 05010 kt, upper level wind 23005 kt, what is the thermal wind

A change in wind direction from 310° to 020° is

A change from 270° to 250° is

Sudden change in wind speed from 10 kt to 30 kt and then to 15 kt is

Sudden change in wind speed from 10 kt to 30 kt for 2–3 minutes

A significant wind shear can be associated with TS or line squall

Cyclostrophic wind gives a good approximation of the 2000' wind in an intense tropical storm

Rotor clouds have extremely turbulent flying conditions

Friction causes winds to flow cross isobaric by ...... over land and ...... over sea

If the S is warmer than N, level by level, from surface up to higher levels, then the ........wind will strengthen with height with no change in direction in N hemisphere

Gradient wind is ............. of geostrophic wind in an anticyclone

Gale is

In N Hemisphere thermal wind is parallel to ....... with low value to left

The inertial flow is

Upper level wind is 24025 kt, lower level wind is 16015 kt, the thermal wind is?

Fog is reported when visibility is reduced to

RVR is reported when visibility falls below

Radiation fog occurs

When visibility reduces between 5000 m and 1000 m and RH is almost 100%, it is

Radiation Fog forms over N India during

Warm and moist air moving over a cold ground gives rise to:

Warm and moist air moving over a cold surface causes

The radiation fog forms due to

The radiation fog activity increases after the passage of a ..........

Radiation fog is essentially a .......... phenomena

The radiation fog forms over ..........

The ........ fog forms due to horizontal movement of warm moist air over cold surface

Advection fog forms during

For formation of Radiation fog

Instrument used for measuring visibility is called ...

Advection fog forms

Fog is ........ cloud on ground

Frontal fog is more common with a

The favourable pressure system for formation of fog is

Thermal processes / temperature distribution which favours formation of fog is

Drizzle occurs from

Altostratus (AS) is

Showers occurs from

Heavy icing is possible in

To avoid icing in cloudy conditions, a pilot is advised to fly through a cloud which shows an optical phenomena

Dark gray cloud giving continuous rain is called

A uniform layer of cloud resembling fog but not on the ground

The clouds composed of ice crystals having feathery appearance

Halo is associated with the cloud

NS clouds occur

Corona is associated with the cloud

Lenticular clouds indicate presence of

The lowest level below which condensation trails will not form is

Rain falling from cloud but not reaching ground is

CB with distinct anvil is called

Cloud ceiling is the height of the cloud covering

No condensation trails occur above

Cloud of operational significance has base below ___ m or below the highest minimum sector altitude, which is greater

AC cloud with cumuliform protuberances are indicative of

Hail may be experienced under the anvil of a CB

DALR $$= 9.8^\circ\text{C}$$ , ELR $$= 6.8^\circ\text{C}$$ ; atmosphere is

SALR $$= 5.5^\circ\text{C}$$ , ELR $$= 4.5^\circ\text{C}$$ ; atmosphere is

DALR > ELR > SALR

Dry air is unstable when

The saturated air is said to be unstable if

If ELR = SALR = DALR the atmosphere is

DALR means

Surface temperature is $$30^\circ\text{C}$$ . Assuming DALR, what is the temperature at 2 km

An isothermal atmosphere is

If environmental lapse rate (ELR) is less than SALR, the atmosphere is said to be

DALR is approximately

SALR at mean sea level is about

SALR approaches DALR

Dry air having a temperature of 35°C on surface when forced to rise adiabatically by 1 km would attain a temperature of

Inversion in the atmosphere indicates

Inversion is ____ Lapse Rate (LR)

Environmental LR can be more than DALR

The process which to a large extent determines the vertical distribution of temperature in atmosphere is

Rise in temperature with height is

Inversion is common in

Aurora Australis occur in the

Aurora Australis called........Lights

Aurora Borealis occur in the

Aurora Borealis are called ____ Lights

Corona occur in ____ clouds

Bishop's ring is due to the diffraction of light by fine particles of

The radius of the Bishop's ring is about

Superior Mirage occurs in marked

Inferior Mirage occurs when there is

Corona are formed due to the ....... of light

Corona are formed due to light, passing through

Halo is produced by

Halo is produced when light passes through

Halo occur in the cloud

Halo is luminous ring of ........... radius

Halo round the sun shows a pure clear ............. on the outside

Halo signifies predominance in the cloud of

The cloud which cause Halo has ... chances of ice accretion

Sometimes a halo with a radius of .......... is observed, called Large Halo

Halo occurs from.... cloud